开关电源PFC论文

4.43󱮴ḹBoost PFCϢӴ㒳Boost PFC󱅲偠󱭄󱥂󱇍↨................................................3㄀Ѩゴ󰟚ゟ⬉󱛳󱮴ḹBOOST PFCⱘ䇤󱤃⦄䈵ⷨお...........................................................35.1䇤󱤃⦄䈵ⱘ䅵ㅫ󱴎ӓⳳ󰦞󰟚󱵤.....................................................................................35.2䇤󱤃⦄䈵⧚䆎󰟚󱵤ⱘ󱅲偠偠䆕.....................................................................................35.3PFC⬉󱛳䜡㕂󱇍䇤󱤃󱴵ӊⱘ󱕅󰪡..................................................................................35.4󱴀ゴ󱇣㒧.........................................................................................................................3㄀󰝁ゴ󱮴ḹBOOST PFC⬉䏃⬉⺕󱑆󱡄⡍󱗻ⷨお...............................................................36.1Ӵ󱇐EMIⱘ󱅮Нǃ⌟䆩󱮍⊩󰦞󱷛󰞚............................................................................36.2Ӵ󱇐EMIⱘ䅵ㅫ󱴎ӓⳳ................................................................................................36.2.1Ӵ󱇐EMIӓⳳὖ䗄.................................................................................................36.2.2󰷎ѢSIMPLISⱘӴ󱇐EMIӓⳳ...........................................................................36.2.3Ӵ󱇐EMIӓⳳ㒧󱵰󱇍↨󰦞ㅔ󱵤.............................................................................36.3Ӵ󱇐EMIⱘㄝ󱬜⬉䏃󰟚󱵤............................................................................................36.3.1󱏂῵󱑆󱡄ㄝ󱬜⬉䏃󰟚󱵤..........................................................................................36.3.2󰝅῵󱑆󱡄ㄝ󱬜⬉䏃󰟚󱵤..........................................................................................36.4󱮴ḹBOOST PFC⬉䏃EMI⡍󱗻󱇣㒧...........................................................................3㄀ϗゴ㒧䆎󰦞󱈩󱳯..................................................................................................................37.1󱴀󱭛󰲲乒󰦞󱘏㒧.............................................................................................................37.2䖯ϔℹⷨお䞡⚍󱈩󱳯.....................................................................................................3󰦖㗗󱭛⤂....................................................................................................................................3㟈

䇶........................................................................................................................................3

󱬏䇏⸩󰺿󱄺ԡ󱳳䯈󰦥㸼ⱘ䆎󱭛................................................................................................3䰘󱔩..........................................................................................................................................3

IV

㄀ϔゴ㒾䆎

㄀ϔゴ㒾䆎

1.1 㚠󱱃

䱣ⴔ󰧘㉏⬉󰰼Ң⬉㔥≆󰦪ⱘ⬉㛑䍞󱴹䍞󰻮ҹ󰦞󰳑䰙㒘㒛󱇍Ѣ⬉㛑䋼䞣ⱘ㾘㣗䍞󱴹䍞ϹḐˈ󰡳⥛󰲴󱭄󱷵ℷ˄Power Factor CorrectionˈPFC˅󱏆㒣󱟤Ў⬉󰡯⬉󱄤㸠ϮЁⱘ⛁⚍DŽ󰳒1-1㒭󰟎њӴ㒳ḹ󱓣󱭈⌕ǃ󰻻⬉󱆍Ⓒ⊶ⱘ󱓔󰝇⬉⑤󰩠󱏺󱳝󰡳⥛󰲴󱭄󱷵ℷ⦃㡖ⱘ󱓔󰝇⬉⑤ⱘЏ㽕⊶󱔶DŽӴ㒳ḹ󱓣󱭈⌕󱓔󰝇⬉⑤Փ⫼󱎹乥Ѡ󱵕ㅵḹ󰷚󰩠㋻䱣󰝊󰧢ⱘ󰻻⬉㾷⬉󱆍󱇚乥⥛Ў50Hz/60Hzⱘ㔥󰥟䕀󱤶󱟤Ⳉ⌕⬉󰥟䕧󰟎㒭󰧢㑻󰦬󱤶󰰼DŽ䖭⾡󱮍󱓣ⱘ䕧󰜹⬉⌕󱰃䴲ℷ󱓺ⱘˈ㗠Ϩ䇤⊶󰧿䞣󱕜󰻻˄󰽖󰳒1-1a˅DŽ󱅗ⱘ󰡳⥛󰲴󱭄ϔ㠀󰳼0.5󱎺󰧇DŽ󱏺󱳝󰡳⥛󰲴󱭄󱷵⦃㡖ⱘ󱓔󰝇⬉⑤ˈ󰝊䕧󰜹⬉⌕⊶󱔶Ϣ䕧󰜹⬉󰥟⊶󱔶Ⳍ󰧠ˈ󱑊ϨⳌԡϔ㟈˄󰽖󰳒1-1b˅DŽ䖭ḋ󱈅Փ󱕫Ң⬉㔥≆󰦪ⱘ󱮴󰡳󰡳⥛䰡Ԣˈ䕧䗕⬉㛑ⱘ󱤳㗫󰞣󱇥ˈ㛑󱳈󱳝󱬜ⱘՓ⫼⬉㛑DŽ

CBVoEMIⒸ⊶󰰼󱭈⌕ḹPFC󰦬󱤶󰰼CoDC/DC󰦬󱤶󰰼+

Vo-dDC/DCdPFCPFC󱥻󰠊󰰼dDC/DCDC/DC󱥻󰠊󰰼(a) (b)

󰳒1-1Ӵ㒳ḹ󱓣󱭈⌕䕧󰜹ⱘ󰦬󱤶󰰼Ϣ󱏺󱳝PFC㑻ⱘ󰦬󱤶󰰼П↨䕗

(a)Ӵ㒳ḹ󱓣󱭈⌕䕧󰜹ⱘ󰦬󱤶󰰼; (b)󱏺󱳝PFC㑻ⱘ󰦬󱤶󰰼Fig.1-1 Comparison of converters with and without PFC stage (a) Converter without PFC stage; (b) Converter with PFC stage

󱇍ѢϔϾ󱮴󰡳⥛󰲴󱭄󱷵ℷ⦃㡖ⱘ󱓔󰝇⬉⑤󱴹䇈ˈ󰘛䆒䋳䕑󰡳⥛Ў1kWˈ󰦬󱤶󰰼ⱘ󱬜⥛Ў98%ˈ󰡳⥛󰲴󱭄Ў0.55DŽ󰟭󰦬󱤶󰰼Ң⬉㔥≆󰦪ⱘ⬉㛑Ў˖

1

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

1000W

1855W (1.1)

98%u0.55

㢹䆹󰦬󱤶󰰼Փ⫼њ󰡳⥛󰲴󱭄󱷵ℷ󱡔󱴃ˈ󰘛䆒󱷵ℷ󰧢PF󰘐Ў0.99ˈ󰧠ḋЎ1kW䋳䕑կ⬉ˈҢ⬉㔥≆󰦪ⱘ⬉㛑󱇚䰡ԢЎ:

1000W

1031W (1.2)

98%u0.99

Ϟ䗄䅵ㅫЁⱘ⬉㛑󱰃Ң⬉㔥≆󰦪ⱘ󱳝󰡳󰡳⥛󰩠󱮴󰡳󰡳⥛П󰩠ˈ󱔧󰡳⥛󰲴󱭄󱦤催󰧢Ң⬉㔥≆󰦪ⱘ󱮴󰡳󰡳⥛󱈅㛑䰡Ԣˈ䖭󱇍󱦤催⬉㛑󰳼⬉㔥ЁⱘӴ䕧󱬜⥛󱳝ⴔ䞡㽕ⱘ󱛣Н[1]DŽ

Ⳃ󰠡󰳼⬉⑤Ё󰡴㺙󰡳⥛󰲴󱭄󱷵ℷ⦃㡖ⱘ󰦺ϔϾЏ㽕󰥳󰲴󱰃Ўњ⒵䎇󰳑䰙㾘㣗󱇍⬉⑤䇤⊶󰧿䞣󰦞󰡳⥛󰲴󱭄󰠊󱅮ⱘ㽕∖DŽ󰽖⃻ⲳⱘEN61000-3-2ϢEN60555ҹ󰦞Ϣ䛑󱇍󱏖⬉կ⬉䆒󰻛Ёⱘ䕧󰜹⬉⌕䇤⊶󰝊Ⳍ󱇍󱑨ⱘ󰳑䰙󱷛󰞚IEC1000-3-2󰦞IEC555ˈ

󰧿䞣˄Ң󰷎⊶󰠄㄀40⃵䇤⊶˅䖯㸠њ䰤󱅮DŽԢ󰡳⥛󰲴󱭄󱇍⬉㔥󱬜⥛󱏺󱴹ⱘ㟈󰩑󱕅󰪡󱏆󱓩䍋󰜼Ϫ⬠ⱘ催󱑺󰝇⊼DŽ⃻ⲳ⥛󰜜󱥼󰟎њ󰡳⥛󰲴󱭄󱷛󰞚ˈЁ󰳑ⱘ󱔎󰠊󱗻䅸䆕

(CCC)ǃ󱮹󱴀ⱘJIC-C-61000-3-2󱷛󰞚ҹ󰦞㕢󰳑󰳑󱆊⦃󰖱㕆(EPA)ⱘ㛑⑤П󱯳(Energy Star)䅵󰟦䛑㸼󱯢󰡳⥛󰲴󱭄󱣛󱷛ℷ󰳼󱟤Ўϔ乍󰜼⧗󱗻ⱘ󱔎󰠊㾘󱅮DŽ㗠Ϩˈ󰡳⥛󰲴󱭄ⱘ㽕∖ϡ󰝡󰦾䰤Ѣ󰻻󰡳⥛䆒󰻛ˈ󱳈󱮄ⱘ󱷛󰞚󰦞㾘㣗㹿䖤⫼󰠄ҙ⍜㗫75Wҹϟⱘ✻󱯢䆒󰻛ㄝ⬉󱄤ѻ󰪕ЁDŽ

1.2 󰡳⥛󰲴󱭄󱷵ℷ󱡔󱴃ὖ䗄

1.2.1 󰡳⥛󰲴󱭄Ϣ䇤⊶󰧿䞣

󰡳⥛󰲴󱭄󰧃ҹㅔ󰤩ⱘ󱅮НЎ󱳝󰡳󰡳⥛Ϣ㾚󰳼󰡳⥛ⱘ↨⥛˖

PF=󱳝󰡳󰡳⥛/㾚󰳼󰡳⥛ (1.3)

󱓣Ё󱳝󰡳󰡳⥛󰧃ҹ󱅮НЎ⬉⌕Ϣ⬉󰥟ⱘⶀ󱯊Ь⿃󰳼󱎹乥󰨼󱳳󰝙ⱘ󱑇󰴛󰘐ˈ󱳝󰡳󰡳⥛󱰃󱅲󱅲󰳼󰳼⍜㗫󰳼⬉䏃Ёⱘˈ䕀󰣪󱟤󰧘⾡󰝊Ҫ󱔶󱓣ⱘ㛑䞣Փ⫼DŽ㗠㾚󰳼󰡳⥛Ў⬉䏃Ё⬉⌕Ϣ⬉󰥟ⱘ󱳝󱬜󰘐ПЬ⿃DŽ㢹⬉⌕Ϣ⬉󰥟󰴛Ўℷ󱓺⊶ˈϨⳌԡϔ㟈ˈ󰟭󰡳⥛󰲴󱭄Ў1DŽ㢹⬉⌕Ϣ⬉󰥟󰴛Ўℷ󱓺⊶ˈԚⳌԡ󱏂ЎTˈ󰟭󰡳⥛󰲴󱭄ЎcosTDŽ

󰘛䆒䕧󰜹⬉󰥟󱅠󰜼Ўℷ󱓺⊶ˈ󰡳⥛󰲴󱭄󰦜󰧃ҹ㸼䖒Ў⭌󰦬󰲴󱭄kdϢԡ⿏󰲴󱭄kTП⿃˖

PF

VrmsIrms(1)cosTVrmsIrms

Irms(1)cosTIrms

kdukT (1.4)

󱓣Ёkd Irms(1)IrmsˈkT cosTDŽ

⭌󰦬󰲴󱭄kd󱅮НЎ󰷎⊶⬉⌕󱳝󱬜󰘐Ϣ󱘏⬉⌕󱳝󱬜󰘐П↨DŽԡ⿏󰲴󱭄󱅮НЎ⬉⌕Ϣ⬉󰥟Ⳍԡ󱏂ⱘԭ󱓺ˈ󰥇cosTDŽϟ󰟫󰝀󱓣󱇚󰡳⥛󰲴󱭄Ϣ󱘏䇤⊶⭌󰦬䞣˄Total

2

㄀ϔゴ㒾䆎

Harmonic DistortionˈTHD˅㘨㋏䍋󱴹˖

kd

1 (1.5)

THD(%)21󰀎()100󰲴ℸ󱔧䕧󰜹⬉⌕ⱘ󰷎⊶󱟤ӑϢ䕧󰜹⬉󰥟Ⳍԡϔ㟈ˈ󰥇kT 1󱯊:

PF

1 (1.6)

THD(%)21󰀎()100⬅Ϟ󱓣ˈ㢹󱘏䇤⊶⭌󰦬䞣Ў10%ˈ󰟭󰡳⥛󰲴󱭄Ў0.995DŽ

1.2.2 󰡳⥛󰲴󱭄󱷵ℷ⬉䏃ⱘ󰟚㉏

󰡳⥛󰲴󱭄󱷵ℷ󱡔󱴃󱳝󱕜󰻮⾡󰟚㉏⊩ˈҢ󱏖⬉⬉㔥䕧󰜹󱮍󱓣󰧃ҹ󰟚Ў󰤩ⳌPFC⬉䏃󰩠ϝⳌPFC⬉䏃DŽҹ󱅲⦄PFCⱘ󱮍⊩Ϟ󰦜󰧃󰟚Ў󱮴⑤PFC⬉䏃󰩠󱳝⑤PFC⬉䏃DŽ󱈅󰡳⥛󰲴󱭄󱷵ℷ󰦬󱤶󰰼󱴀䑿ⱘ㒧󱵘㗠㿔ˈ󰡳⥛󰲴󱭄󱷵ℷ󰰼󰦜󰧃󰟚Ў󰤩㑻PFC󰦬󱤶󰰼󰩠ϸ㑻PFC󰦬󱤶󰰼ϸ⾡DŽϟ䴶ҙ󱇍󰧢ϸ⾡󰟚㉏󱮍⊩󰘮ㅔ㽕ҟ㒡DŽ

1.2.2.1󱮴⑤PFC⬉䏃󰩠󱳝⑤PFC⬉䏃

󰳒1-2a㒭󰟎њϔϾ󱏺󱳝䕧󰜹⬉󰥟㣗󰳈䗝󱢽󱓔󰝇ⱘ󰝌󰵟󱮴⑤PFC⬉䏃󰦞󰝊⊶󱔶DŽ󱮴⑤PFC⬉䏃󱰃䗮䖛󰳼󱭈⌕ḹ󰠡󰹲󰡴ϔϾ󰻻⬉󱛳󱴹䖒󰠄󱦤󰤛PF󰘐ǃ󰞣󱇣䇤⊶󰧿䞣ⱘⳂⱘDŽ󰦾㽕䆹⬉󱛳䎇󰻳󰻻ˈ󱈅㛑󱯢󱰒󱡥󰠊䕧󰜹⬉⌕ⱘ󱋄󰘐ˈ󰹲󰡴ḹ󱓣󱭈⌕⬉䏃ⱘ󱇐䗮㾦ҹ󰦞䰡Ԣ䇤⊶󰧿䞣ҹ⒵䎇㽕∖DŽ󰳒1-2bЁⱘ⊶󱔶Ў䞛⫼󱮴⑤PFC⬉䏃󰧢ⱘ䕧󰜹⬉⌕⊶󱔶Ϣ󱮴PFC⬉䏃ⱘ䕧󰜹⬉⌕⊶󱔶П↨䕗DŽ⬅󰳒󰧃㾕䞛⫼󱮴⑤PFC󰧢ˈ䕧󰜹⬉⌕󱋄󰘐䰡Ԣˈ󱇐䗮㾦󰹲󰻻ˈ󰝋󱳝ϔ󱅮ⱘ󰡳⥛󰲴󱭄󱷵ℷ԰⫼DŽ

Vo(a) (b)

󰳒1-2 󱮴⑤PFC⬉䏃㒧󱵘󰦞󰝊⊶󱔶

(a)⬉䏃㒧󱵘˗(b)⊶󱔶

Fig.1-2 Structure of Passive PFC and its waveforms

(a) Circuit diagram; (b) Waveforms

󱮴⑤PFC⬉䏃󰻮󱭄󰳼ϔѯ䅵ㅫ󱴎⬉⑤ЁՓ⫼ˈ󰲴Ў䅵ㅫ󱴎⬉⑤󱇍䞡䞣󰩠ԧ⿃

3

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

ϡ󱬣󱛳DŽ󰲴Ў󱮴⑤PFC⬉䏃㱑✊󱟤󱴀Ԣǃ㒧󱵘ㅔ󰤩ˈԚ󱰃󱅗䳔㽕ー䞡ⱘPFC⬉󱛳DŽ󱔧󰡳⥛䍙䖛250Wҹ󰧢ˈ󱮴⑤PFC⬉󱛳ⱘԧ⿃󰩠䞡䞣󱈅󱮴⊩󱥹󰦫њDŽ󱠔ҹ󱮴⑤PFC⬉䏃󰦾㛑䗖⫼Ѣ󱇣󰡳⥛ǃԢ󱟤󱴀ǃ󱇍ԧ⿃󰩠䞡䞣㽕∖ϡ催ⱘ󰴎󰧜DŽ䖭⾡󱷵ℷ⬉䏃󱠔㛑䖒󰠄ⱘ󰡳⥛󰲴󱭄󰘐󰳼0.6̚0.8П䯈DŽ󱑊ϨЎњ䗖󱑨󰜼⧗󱆑⬉󰥟䖬䳔⏏󰡴󰽖󰳒

1-2a󱠔⼎ⱘ䕧󰜹⬉󰥟㣗󰳈󰟛󱤶󱓔󰝇[2]DŽ

󰳼󰻻󰡳⥛乚󰶳ˈ󱳝⑤PFC⬉䏃󰞴Т󱰃󰬃ϔⱘ䗝󱢽DŽ󱳝⑤PFC⬉䏃󰧃ҹ䖒󰠄󱥹䖥

1ⱘ󰡳⥛󰲴󱭄ҹ󰦞󱕜ԢⱘTHD󰘐󱑊Ϩ󰧃ҹ䗖󱑨󱆑㣗󰳈⬉󰥟䕧󰜹DŽ󱳝⑤PFC⬉䏃䕧󰟎⬉󰥟ϔ㠀Ў催󰥟400V󱎺󰧇ˈ󰧃ҹՓ⫼䕗󱇣ⱘ⬉㾷⬉󱆍󱴹⒵䎇䕧󰟎⬉󰥟󰖱󱣕󱯊䯈ⱘ㽕∖DŽ󰧠󱯊г󱳝󰟽Ѣ󰞣󱇣󰧢㑻DC/DC⬉䏃ⱘ󱤳㗫DŽ󱴀󱭛󱠔ⷨおⱘ󱮴ḹBoost PFC⬉䏃󱈅󱈲Ѣϔ⾡催󰡳⥛ǃԢ󱤳㗫ⱘ󱳝⑤PFC⬉䏃DŽ󱳝⑤PFC⬉䏃㱑✊󱳝󱕜󰻮Ӭ⚍ˈԚ󱰃䳔㽕󱟤󱴀䕗催ⱘ󱥻󰠊㢃⠛󰩠󰻡󱴖ⱘ󰻪󰳈⬉䏃DŽ㗠Ϩ⬅Ѣ㒧󱵘󰻡󱴖󱳝⑤PFC⬉䏃г󰹲󰡴њ㑺5̚10%ⱘ󱤳㗫DŽ󱳝⑤PFC⬉䏃䖬䳔㽕󱅠󰭘ⱘEMIⒸ⊶󰰼󱴹䖒󰠄⬉⺕󰝐󱆍󱷛󰞚ⱘ㽕∖DŽ

1.2.2.2󰤩㑻PFC󰦬󱤶󰰼󰩠ϸ㑻PFC󰦬󱤶󰰼

󰤩㑻PFC󰦬󱤶󰰼󱇚PFC㑻󰩠DC/DC㑻󱭈󰧜󰳼ϔ䍋ˈ󰦾⫼ϔ㑻󰦬󱤶󱈅㛑󰧠󱯊󱅲⦄䕧󰜹󰡳⥛󰲴󱭄󱷵ℷǃ䕧󰜹䕧󰟎ⱘ䱨⾏󰩠䕧󰟎⬉󰥟ⱘ䇗㡖󰡳㛑DŽ⬅Ѣ󰤩㑻PFC󰦬󱤶󰰼ⱘPFC㑻ϢDC/DC㑻󰝅⫼ϔϾ󱓔󰝇ㅵˈ󱠔ҹ󱅗ⱘ󱟤󱴀䕗Ԣǃ㒧󱵘ㅔ󰤩DŽԚ󱰃󰤩㑻PFC󱄬󰳼ⱘ䯂乬󱰃󰙼㛑⬉󱆍Ϟⱘ⬉󰥟Ϣ䕧󰜹⬉󰥟ⱘ󱳝󱬜󰘐󱟤ℷ↨󰦬󰣪ˈ㗠Ϩ䕧󰜹⬉⌕ⱘTHD䕗󰻻DŽ󰤩㑻PFC󰦬󱤶󰰼󱐌⫼ѢԢ󰡳⥛ǃ󱇍䕧󰟎⬉󰥟㊒󱑺㽕∖ϡ催ⱘ󱑨⫼󰴎󰧜DŽ

ϸ㑻PFC󰦬󱤶󰰼Փ⫼ϸϾ⣀ゟⱘ󱥻󰠊󰰼󰟚󰟿󱅠󱟤󰡳⥛󰲴󱭄󱷵ℷ󰩠DC/DC㑻䕧󰟎⬉󰥟䇗󱭈ⱘ󰡳㛑ˈ󰥇ЎϔϾ⣀ゟⱘ󰡳⥛󰲴󱭄󱷵ℷ⦃㡖󰧢󱥹󰜹ϔϾDC/DC󰦬󱤶󰰼ⱘϸ㑻῵󱓣DŽPFC㑻䗮󱐌Փ⫼ⱘ󱢧󱠥󱰃Boost󰦬󱤶󰰼ˈ󰷎ѢBoost󰦬󱤶󰰼ⱘ

PFC㑻󰳼󱥻󰠊ϞⳌ󱔧󱟤❳DŽϸ㑻PFCⱘӬ⚍Ў˖PFC㑻㛑󱅲⦄催󰡳⥛󰲴󱭄ǃԢ䕧󰜹⬉⌕䇤⊶󰧿䞣ˈPFC䕧󰟎󰻻⬉󱆍󰧃ҹ󱦤կ䕗〇󱅮ⱘ催󰥟Ⳉ⌕䕧󰟎󰩠䕗䭓ⱘ󰖱󱣕󱯊䯈DŽ⣀ゟⱘDC/DC㑻󰦜㛑󱦤կ㊒󰞚ⱘ䕧󰟎⬉󰥟㒭䋳䕑DŽ󱠔ҹⳂ󰠡ⱘ⬉⑤󰦬󱤶󰰼󰻮Փ⫼ϸ㑻PFC󱢧󱠥DŽԚ󱰃⬅Ѣ⬉㛑󰳼ϸ㑻PFC󰦬󱤶󰰼Ё㹿󰻘⧚њϸ⃵ˈ󰝊󱤳㗫↨󰤩㑻PFC󰻻DŽ㗠Ϩ↣㑻⬉䏃󰴛䳔㽕⣀ゟⱘ󱓔󰝇ㅵǃ󱥻󰠊󰰼ㄝ󰜗ӊˈ󰹲󰡴њ󱟤󱴀DŽ

1.2.3 󱳝⑤󰡳⥛󰲴󱭄󱷵ℷ󱥻󰠊󱮍⊩󰲲乒

󱮴䆎󱳝⑤PFC⬉䏃Փ⫼ԩ⾡󱢧󱠥ˈ䛑㟇󱇥䳔㽕󱳝ϔϾPFC⬉󱛳ԡѢ↡㒓䕧󰜹ջDŽ⬅Ѣ⬉󱛳⬉⌕ϡ㛑さ󰦬ˈPFC⬉󱛳󱇍䕧󰜹⬉⌕䍋󰠄њ󱅮󱔶԰⫼DŽ󰧘⾡󰡳⥛󰲴󱭄󱷵ℷ󱥻󰠊󱮍⊩䗮䖛ϡ󰧠ⱘ󱮍󱓣󱴹󱥻󰠊⬉󱛳⬉⌕ⶀ󱯊⊶󱔶ˈՓ󱕫⬉󱛳⬉⌕󱎹乥󰷎⊶󰟚䞣Ϣ䕧󰜹⬉󰥟ⱘ⊶󱔶ϔ㟈󱑊Ϩ󰧠Ⳍԡˈҹℸ󱅲⦄󰡳⥛󰲴󱭄󱷵ℷⱘ󰡳㛑DŽ󱣝✻

4

㄀ϔゴ㒾䆎

ϡ󰧠ⱘ⬉󱛳⬉⌕⊶󱔶󱥻󰠊󱮍⊩ˈ󱳝⑤PFC⬉䏃󰧃󰟚Ўҹϟ󰲯㉏˖Ј⬠󱮁㓁⬉⌕῵󱓣˄Critical Conduction Mode, CRM)ǃ󱮁㓁⬉⌕῵󱓣˄Discontinuous Conduction

Mode, DCM)ǃ䖲㓁⬉⌕῵󱓣˄Continuous Conduction Mode, CCM˅ҹ󰦞󰳎󱅮󰝇󱮁󱯊䯈῵󱓣(Fixed-Off-Time Mode, FOT)DŽ󰳒1-3㒭󰟎њ󱅗Ӏⱘ󰝌󰵟⊶󱔶DŽ

󱋄󰘐⬉⌕󱑇󰴛⬉⌕Ј⬠󱮁㓁⬉⌕῵󱓣

(a) (b)

DCMCCM󱋄󰘐⬉⌕DCM󱑇󰴛⬉⌕󰳎󱅮󰝇󱮁󱯊䯈῵󱓣

(c) (d)

󰳒1-3 ϡ󰧠󱥻󰠊῵󱓣ϟⱘ⬉󱛳⬉⌕⊶󱔶

˄a˅Ј⬠󱮁㓁⬉⌕῵󱓣˗˄b˅󱮁㓁⬉⌕῵󱓣˗˄c˅䖲㓁⬉⌕῵󱓣˗˄d˅󰳎󱅮󰝇󱮁󱯊䯈῵󱓣

Fig.1-3 Inductor current waveforms of different PFC control strategies (a) Critical conduction mode; (b) Discontinuous conduction mode;

(c) Continuous conduction mode; (d) Fixed-Off-Time mode

1.2.3.1Ј⬠󱮁㓁⬉⌕῵󱓣󱥻󰠊

Ј⬠󱮁㓁⬉⌕῵󱓣󱥻󰠊󱰃ϔ⾡󰦬乥῵󱓣ⱘ󱥻󰠊󱮍󱓣ˈ䖭⾡󱥻󰠊󱮍󱓣󰳼󰝇󱮁󱓔󰝇ㅵ󰧢Ⳉ󰠄⬉⌕䰡Ԣ󰠄䳊󱠡󰝡⃵󱓔䗮󱓔󰝇ㅵDŽ󱅗󱰃󱇣󰡳⥛⬉⑤󱐌⫼ⱘ󰡳⥛󰲴󱭄󱷵ℷ󱥻󰠊󱮍⊩DŽ󰳒1-3a㒭󰟎њ䆹⾡󱥻󰠊󱮍⊩ⱘ⬉󱛳⬉⌕ⶀ󱯊⊶󱔶ˈ󱑊󱷛󰟎󱋄󰘐⬉⌕󰩠󱑇󰴛⬉⌕ⱘ󰣙㒰㒓DŽ䖭⾡󱥻󰠊󱮍󱓣ⱘ⬉󱛳⬉⌕󰳼󱓔󰝇ㅵ󱓔䗮󱯊󰠏󱏆䰡㟇䳊ˈ󰧃ҹ⍜䰸Ѡ󱵕ㅵ󰦡󰧥󱘶󰻡󱠔󱓩䍋ⱘЏ󱓔󰝇ⱘ󱤳㗫DŽ㗠Ϩ䖭⾡󱥻󰠊󱮍⊩㒧󱵘ㅔ󰤩ˈ㢃⠛󰻪󰳈󰜗ӊ󱭄䞣󱕜󱇥ˈ󰳼㋏㒳󱟤󱴀Ϟ󰤴󱳝󱕜󰻻ⱘӬ󰢓DŽϡ䖛Ј⬠󱮁㓁⬉⌕῵󱓣󱥻

5

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

󰠊ⱘ󱋄󰘐⬉⌕䕗催ˈ󱓔󰝇ㅵϢѠ󱵕ㅵⱘ⬉⌕󱑨󰡯䕗󰻻DŽ󱑊Ϩ⬅Ѣ󱰃ϔ⾡󰦬乥󱡔󱴃ˈ󰳼䕧󰜹㒓⬉󰥟䖛䳊󱳳䯈󰦬󱤶󰰼ⱘ󱎹԰乥⥛󱕜催ˈEMIⒸ⊶󰰼䆒䅵↨䕗󰳄䲒DŽ

1.2.3.2󱮁㓁⬉⌕῵󱓣󱥻󰠊

Ϟ㡖󱠔䗄ⱘЈ⬠󱮁㓁⬉⌕῵󱓣󱥻󰠊󱰃ϔ⾡󰦬乥󱥻󰠊ˈ󰳼㒓⬉󰥟䖛䳊󱳳䯈󰦬󱤶󰰼ⱘ󱎹԰乥⥛󱕜催ˈ㗠󱮁㓁⬉⌕῵󱓣󱥻󰠊󱰃ϔ⾡󱘦乥󱥻󰠊DŽ󰽖󰳒1-3b󱠔⼎ˈ󱮁㓁⬉⌕῵󱓣󱥻󰠊ⱘ⡍⚍󱰃󱓔󰝇乥⥛󰳎󱅮ˈϨ󰳼ϸϾ󱓔󰝇󰨼󱳳П䯈ⱘ⬉󱛳⬉⌕󱄬󰳼⅏󰤎DŽ󱅗󰝋󱳝Ј⬠󱮁㓁⬉⌕῵󱓣󱥻󰠊ㅔ󰤩ǃ󱯧⫼ⱘӬ⚍ˈ󰧠󱯊г䰡Ԣњ󰦬󱤶󰰼ⱘ󱎹԰乥⥛ǃ󱬍󰭘њ䕏䕑󰩠󱮴䕑󱚙󰞉ϟⱘ󱤳㗫DŽԚ󱰃ˈ󱔧⬉󱛳⬉⌕󱳝󱬜󰘐Ⳍ󰧠ⱘ󱚙󰞉ϟ䆹⾡󱥻󰠊󱮍󱓣ⱘ󱋄󰘐⬉⌕↨Ј⬠󱮁㓁⬉⌕῵󱓣󱥻󰠊ⱘ󱋄󰘐⬉⌕䖬㽕催ˈ󱓔󰝇󰰼ӊⱘ⬉⌕󱑨󰡯󱳈󰻻DŽ󱠔ҹ󱮁㓁⬉⌕῵󱓣PFCг󰦾󰧜䗖󰳼󱇣󰡳⥛㣗󰳈Փ⫼DŽ

1.2.3.3䖲㓁⬉⌕῵󱓣󱥻󰠊

䖲㓁⬉⌕῵󱓣󱥻󰠊ⱘPFC󰦬󱤶󰰼ⱘ⬉󱛳⬉⌕䰸њ󰳼䕧󰜹ℷ󱓺⬉󰥟䖛䳊󱯊󰠏Ӯ䰡Ԣ㟇䳊ҹ󰻪ˈ󰳼ӏԩ󱯊󰠏䛑ϡЎ䳊˄㾕󰳒1-3c˅DŽ䖭⾡󱥻󰠊῵󱓣ⱘ⬉󱛳⬉⌕ⱘ㒍⊶󱰃󱳔󱇣ⱘˈ䗖󰧜Ё催󰡳⥛󱑨⫼󰴎󰧜DŽ䆹⾡󱥻󰠊󱮍󱓣󰝋󱳝ҹϟӬ⚍˖󱋄󰘐⬉⌕䕗Ԣˈ䰡Ԣњ󱓔󰝇󰰼ӊⱘ⬉⌕󱑨󰡯󰩠󱤳㗫DŽ⬉󱛳⬉⌕ⱘ㒍⊶󱕜󱇣㗠Ϩ󱰃󱘦乥ⱘˈ󱮍󰖓њ䕧󰜹Ⓒ⊶󰰼ⱘ䆒䅵󰧠󱯊г䰡Ԣњ⺕󱗻󰜗ӊⱘ󱤳㗫DŽ

Ԛ󱰃䖲㓁⬉⌕῵󱓣󱥻󰠊г󱄬󰳼ⴔϔѯ㔎⚍ˈ⬅Ѣ⬉󱛳⬉⌕䖲㓁Փ󱕫Ѡ󱵕ㅵⱘ󰦡󰧥󱘶󰻡󱓩䍋ⱘ󱤳㗫䕗󰻻ˈ䰡Ԣњ󰦬󱤶󰰼ⱘ󱬜⥛DŽ󱠔ҹ䖲㓁⬉⌕῵󱓣ⱘPFC󰦬󱤶󰰼䳔㽕Փ⫼󰦡󰧥⡍󱗻䕗󰽑ⱘ䍙󱖿䗳Ѡ󱵕ㅵDŽ㗠Ϩ󱅲⦄䖲㓁⬉⌕῵󱓣󱥻󰠊ⱘ㢃⠛󰦞󰝊󰨼䖍⬉䏃гⳌ󱔧󰻡󱴖ˈ󱟤󱴀䕗催DŽϡ䖛䱣ⴔ㢃⠛ⷨ󰦥󱡔󱴃ⱘϡ󱮁󱦤催DŽ䖥󱑈ϔѯ󱮄乪ⱘ䖲㓁⬉⌕῵󱓣PFC󱥻󰠊㢃⠛г󱦤կњϡ󱇥㒧󱵘ㅔ󰤩ǃ󱟤󱴀䕗Ԣⱘ㾷󰞇󱮍ḜDŽ՟󰽖󱴹㞾ON SemiconductorⱘNCP1653󱰃ϔ⾡󰷎ѢЬ⊩󰰼ⱘㅔ󰣪󰵟󱑇󰴛⬉⌕῵󱓣PFC󱥻󰠊󰰼ˈInternational RectifierⱘIR1150Sҹ󰦞Infineon Technologies AG ⱘICE1PCS01󱰃󰷎Ѣ󱮄󰵟󰤩󰨼󱳳󱥻󰠊˄One-Cycle Control˅ⱘPFC󱥻󰠊󰰼DŽ

1.2.3.4󰳎󱅮󰝇󱮁󱯊䯈῵󱓣󱥻󰠊[3]

䖲㓁⬉⌕῵󱓣󱥻󰠊󱓎䆂⫼Ѣ󰻻󰡳⥛󱑨⫼󰴎󰧜ˈ㗠Ј⬠󱮁㓁⬉⌕῵󱓣󱥻󰠊䗖⫼Ѣ󱇣󰡳⥛󱑨⫼󰴎󰧜ˈ󰳼ϸ⾡󱥻󰠊󰧃⫼󱗻󰟚⬠㒓ϡ⹂󱅮ⱘ“♄㡆󰤎󰶳”ˈϔ⾡󱭈󰧜њЈ⬠󱮁㓁⬉⌕῵󱓣󱥻󰠊ⱘㅔ󱯧󱗻ǃ㒣⌢󱗻󰩠䖲㓁⬉⌕῵󱓣󱥻󰠊ⱘ󱔎⬉⌕󰻘⧚㛑󰡯ⱘ󱮄󰵟󱥻󰠊󱮍⊩——󰳎󱅮󰝇󱮁󱯊䯈󱥻󰠊˄Fix-Off-Time, FOT˅󱳈Ў󰧜䗖DŽ䖭⾡󱥻󰠊󱮍⊩ⱘ⡍⚍Ў󰳎󱅮󱓔󰝇ㅵⱘ󰝇󱮁󱯊䯈ˈ䇗󱭈󰝊󱓔䗮󱯊䯈ˈ󱠔ҹ䆹⾡󱥻󰠊󱮍⊩ⱘ󱎹԰乥⥛г󱰃󰦬󰣪ⱘDŽ

󰽖󰳒1-3d󱠔⼎ˈ󰳎󱅮󰝇󱮁󱯊䯈󱥻󰠊῵󱓣ϟⱘ⬉󱛳⬉⌕󱰃󱎹԰󰳼CCM󰩠DCMϸ⾡⢊󱗕ϟⱘDŽ䖭⾡󱥻󰠊㢃⠛ⱘ㒧󱵘󰩠󰻪󰳈⬉䏃↨䕗ㅔ󰤩,󱑊Ϩ󰝋󱳝Ӵ䗦催󰡳⥛ⱘ㛑󰡯DŽ䕧󰟎⬉󰥟ⱘ󰡼󱗕󰪡󱑨г䕗󱖿ˈ󱑊󰳼ϔ󱅮⿟󱑺Ϟ㓧㾷њѠ󱵕ㅵⱘ󰦡󰧥󱘶󰻡䯂乬ˈ䰡Ԣњ󰦡󰧥󱘶󰻡󱓩䍋ⱘ󱤳㗫DŽ

6

㄀ϔゴ㒾䆎

1.3 󱴀󱭛󱛣Н󰦞ⷨお󰝙󱆍

Ӵ㒳䖲㓁῵󱓣󰡳⥛󰲴󱭄󱷵ℷ⬉䏃󱳔󱐌⫼ⱘ󱈅󱰃Boost󰤛󰥟󱢧󱠥DŽ䆹󱢧󱠥㒧󱵘ㅔ󰤩ˈ󱥻󰠊󱮍󰖓DŽ󰷎ѢBoost󱢧󱠥ⱘPFC󱮍Ḝ󱏆㒣Ⳍ󱔧󱟤❳DŽԚ󱰃⬅ѢBoost󱢧󱠥ⱘ󱭈⌕ḹ󱇐䗮󱤳㗫䕗催ˈ󱇐㟈䖭⾡󱢧󱠥ⱘ󱬜⥛䕗ԢDŽ󱇸󰝊󱰃Ԣ󰥟ǃ󰻻⬉⌕䕧󰜹ⱘ󱚙󰞉ϟ󱭈⌕ḹⱘ󱤳㗫󱳈ЎϹ䞡DŽ䱣ⴔ󰤞󱇐ԧ󱡔󱴃ⱘϡ󱮁󰦥󱈩ˈ󰝋󱳝󱕜Ԣ󱇐䗮⬉䰏ⱘ

MOSFET󱓔󰝇ㅵҹ󰦞󰞴Т󱮴󰦡󰧥󱘶󰻡⡍󱗻ⱘ⺇󰣪⸙˄SiC˅Ѡ󱵕ㅵ󰻻󱐙󱑺ⱘ䰡ԢњPFC⬉䏃󱓔󰝇󰜗ӊⱘ󱤳㗫DŽԚ󱰃⬅󱭈⌕ḹ󱓩䍋ⱘ󱤳㗫󰥈ϔⳈ󱮴⊩󱕫󰠄ḍ󱴀ⱘ󱡥󰠊DŽ

Ўњ䰡Ԣ󱭈⌕ḹ󱠔󱏺󱴹ⱘ󱇐䗮󱤳㗫ˈ⬉⑤󱎹⿟󱏜󱦤󰟎њϔѯ󱮴䳔䕧󰜹󱭈⌕ḹⱘ󱮄󱢧󱠥DŽ󰳼䖭ѯ󱢧󱠥Ёˈϔ⾡󱮴ḹBoost PFC˄Bridgeless Boost PFC˅󱢧󱠥⬅Ѣ󰝊㒧󱵘ㅔ󰤩ǃ󱓔󰝇ㅵ偅󰡼󱮍󰖓ǃ󱬜⥛󱦤󰤛䕗催㗠󰻛󰦫󰝇⊼DŽⳕ⬹њ䕧󰜹󱭈⌕ḹⱘ󱮴ḹBoost PFC󱢧󱠥Ⳍ↨Ӵ㒳ⱘBoost PFC⬉䏃󱬜⥛㑺󱦤催њ1%̚2%ˈ󰳼󰻻󰡳⥛󱑨⫼乚󰶳󱬜⥛ⱘ󱦤󰤛󱳈Ў󱯢󱰒DŽ

㱑✊󱮴ḹBoost PFC⬉䏃ⱘ㒧󱵘ㅔ󰤩DŽԚ󱰃⬅Ѣⳕ⬹њ󱭈⌕ḹˈ󰷎ѢЬ⊩󰰼ⱘӴ㒳PFC󱥻󰠊󱮍󱓣󱠔䳔ⱘ䕧󰜹󰤞⊶ℷ󱓺⬉󰥟󰖵󰧋󱮴⊩Ⳉ󱥹䞛ḋDŽ㗠Ϩ䆹󱢧󱠥ⱘ⬉󱛳ԡѢѸ⌕䕧󰜹↡㒓Ϟˈ⬉󱛳⬉⌕ⱘ󱮍󰧥󱰃ϡ󱮁󰦬󰣪ⱘDŽ䖭г㒭⬉󱛳⬉⌕󰖵󰧋ⱘẔ⌟󱏺󱴹󰳄䲒DŽ㗠Ϩ⬉󱛳ⱘ⡍⅞ԡ㕂󱇐㟈њ䆹⾡󱢧󱠥ⱘEMI󱑆󱡄䕗ЎϹ䞡ˈ䰡Ԣњ䆹󱢧󱠥󰳼󱅲䰙󱑨⫼ЁⱘӋ󰘐DŽⳂ󰠡䖭󰞴Ͼ󱮍䴶ⱘ䯂乬䖬󱳾㛑󱕜󰽑ⱘ㾷󰞇ˈ䖭㸼󱯢󱯢њ󱇍󱮴ḹBoost PFC󱢧󱠥䖯ϔℹⷨおⱘ󱖙㽕󱗻DŽ󱴀󱭛ⷨおⱘ䞡⚍㓐䗄󰽖ϟ˖

1ǃՓ⫼󱮴ḹBoost PFCҷ󱳓Ӵ㒳Boost PFC⬉䏃ⱘḍ󱴀󰥳󰲴󰳼Ѣ󱮴ḹBoost PFC󰳼

󱬜⥛ϞⱘӬ󰢓DŽ󱴀󱭛󱇚䗮䖛󱅲偠󱇍↨󰧘⾡䕧󰜹⬉󰥟󰦞䕧󰟎䋳䕑󱴵ӊϟ󱮴ḹ

Boost PFC󰩠Ӵ㒳Boost PFC󱢧󱠥󱬜⥛ǃPF󰘐ㄝ󱅲偠󱭄󱥂ˈ㒭󰟎ϔϾ󱇍󱮴ḹBoostPFC⬉䏃󱬜⥛Ӭ󰢓ⱘ󱅶㾖䆘ӋDŽ䳔㽕⊼󱛣ⱘ󱰃ˈ󱮴ḹBoost PFC⬉䏃ⱘEMI󱑆󱡄Ⳍ󱔧Ϲ䞡DŽՓ⫼󰧠ḋⱘEMIⒸ⊶󰰼󱯊ˈ⬅EMI󱑆󱡄˄Џ㽕󱰃󰝅῵⬉⌕˅󱠔󱓩䍋ⱘⒸ⊶󰰼󰦞⺕󱗻󰜗ӊЁⱘ󱤳㗫Ӯ↨Ӵ㒳Boost PFC⬉䏃ЁⱘⳌ󱑨󱤳㗫㽕󰻻DŽ󱔧䕧󰜹⬉󰥟󰤛催󱟪䕧󰟎󰡳⥛䰡Ԣ󱯊ˈ󱇐䗮󱤳㗫ϡ󰝡󱟤ЎЏ㽕󱤳㗫DŽℸ󱯊EMIⒸ⊶󰰼󰩠⺕󱗻󰜗ӊЁⱘ󱤳㗫Ӯ󱇐㟈󱮴ḹBoost PFC⬉䏃ⱘ󱬜⥛Ӭ󰢓󱯢󱰒䰡ԢDŽ

2ǃ䡈Ѣ󱮴ḹBoost PFC󰳼󱥻󰠊󱮍䴶ⱘ󰻡󱴖󱗻ˈЎ󱮴ḹBoost PFC󱢧󱠥䗝󱢽ϔ⾡󰧜䗖

ⱘPFC󱥻󰠊ICҹ󰦞㾷󰞇䕧󰜹⬉󰥟󰩠⬉󱛳⬉⌕䞛ḋⱘ䯂乬г󱰃󱴀󱭛ⷨおⱘ䞡⚍ПϔDŽ󰳼ⷨおҹ󱕔󱮴ḹBoost PFC󱥻󰠊󱮍Ḝⱘ󰷎⸔Ϟˈ󱴀󱭛㒭󰟎њϸ󰼫󰷎Ѣ󰤩󰨼󱳳󱥻󰠊PFC㢃⠛ⱘ󱮴ḹBoost PFC⬉䏃󱥻󰠊㾷󰞇󱮍ḜDŽ󰤩󰨼󱳳󱥻󰠊PFC㢃⠛󱮴䳔䕧󰜹㒓⬉󰥟䞛ḋˈ󰻻󰻻ㅔ󰣪њ󱮴ḹBoost PFC󱢧󱠥ⱘ󱥻󰠊⬉䏃䆒䅵䲒󱑺DŽ󱮴ḹBoost PFC⬉䏃⬉󱛳⬉⌕ⱘẔ⌟Փ⫼њ⬉⌕Ѧ󱛳󰰼㾷󰞇󱮍Ḝ󱑊󰦪󱕫њ䕗󰽑ⱘ󱥻󰠊󱬜󱵰DŽ

3ǃ󰳼󱅲偠Ё󰦥⦄ˈ󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃ⱘ⬉󱛳⬉⌕Ϟ󰦴󰡴󱳝催乥䇤󱤃⬉

7

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

⌕󰖵󰧋DŽ䇤󱤃⬉⌕󱇐㟈⬉⌕䞛ḋ󰖵󰧋⭌󰦬ˈӮ󱕅󰪡󰠄󱥻󰠊⬉䏃ⱘ〇󱅮󱗻DŽ䖭⾡⦄䈵󰳼䕧󰜹ջ󰡴㺙󰝅῵Ⓒ⊶⬉󱛳󰧢󱕫󰠄󱡥󰠊DŽ䖭⾡䇤󱤃⬉⌕ѻ⫳ⱘ󰥳󰲴󰩠䏃󱕘ҹ󰦞󱇍⬉䏃〇󱅮󱗻󰩠EMIⱘ󱕅󰪡󱇚󰳼㄀ѨゴЁ䆺㒚󰟚󱵤DŽ

4ǃ󱮴ḹBoost PFC󱢧󱠥󱳔Ϲ䞡ⱘ䯂乬󱰃⬅ѢPFC⬉󱛳ԡ㕂ⱘ⡍⅞󱗻󱇐㟈ⱘEMI䯂

乬䕗ЎϹ䞡ˈ󱇸󰝊󱰃󰝅῵󱑆󱡄䕗󰻻DŽ󱴀󱭛Փ⫼ㄝ󱬜⬉䏃⊩㒧󰧜䅵ㅫ󱴎ӓⳳ󰟚󱵤󰩠󱇍↨њ󱮴ḹBoost PFC⬉䏃ϢӴ㒳Boost PFC⬉䏃󱢧󱠥󰳼EMI󱮍䴶ⱘ⡍⚍󰩠󰤎󰟿DŽ󰧠󱯊󱴀󱭛г󱇍󰞴⾡ϡ󰧠⬉󱛳㒧󱵘ⱘ󱮴ḹBoost PFC⬉䏃󰳼EMI󱮍䴶ⱘ㸼⦄䖯㸠њ󰟚󱵤DŽ

8

㄀Ѡゴ󱮴ḹBoost PFC⬉䏃󱢧󱠥ㅔ󱵤

㄀Ѡゴ󱮴ḹBoost PFC⬉䏃󱢧󱠥ㅔ󱵤

2.1 󱮴ḹBoost PFC󱢧󱠥ὖ䗄

󱳝⑤PFC⬉䏃䗮󱐌Փ⫼Ӵ㒳ⱘBoost󰤛󰥟󱢧󱠥DŽ󰽖󰳒2-1󱠔⼎ˈӴ㒳Boost PFC⬉䏃Ё󱭈⌕ḹB1󱇚䕧󰜹ℷ󱓺Ѹ⌕⬉󰥟󱭈⌕󱟤ℷ󱓺󰤞⊶⬉󰥟ˈ䆹󰖵󰧋г󱰃󰷎ѢЬ⊩󰰼ⱘ󱑇󰴛⬉⌕῵󱓣PFC󱥻󰠊Ё󱠔䳔ⱘ⬉󱛳⬉⌕󰷎󰞚DŽ󱭈⌕ḹ󰧢ⱘPFC⬉󱛳󱰃󱅲⦄󰡳⥛󰲴󱭄󱷵ℷⱘ䞡㽕󰜗ӊˈ䗮䖛PFC󱥻󰠊㢃⠛󰞇󱅮󱓔󰝇ㅵⱘ󱓔䗮Ϣ󰝇󱮁󱴹󱥻󰠊Boost⬉󱛳ⱘ󱑇󰴛⬉⌕⊶󱔶Ϣ䕧󰜹⬉󰥟⊶󱔶ϔ㟈󱴹䖒󰠄󱥹䖥Ѣ1ⱘPF󰘐󰦞䕗Ԣⱘ⬉⌕䇤⊶󰧿䞣DŽ󰧠󱯊󱥻󰠊󰲲䏃Ё䕗󱜶ⱘ⬉󰥟⦃󱇚䕧󰟎⬉󰥟〇󰥟󰳼ϔϾ󱅮󰘐˄䗮󱐌⿡催Ѣ󱭈⌕󰧢ℷ󱓺󰤞⊶ⱘ󱋄󰘐⬉󰥟˅ҹկ㒭󰧢㑻DC/DC󰦬󱤶󰰼Փ⫼DŽ

L1D1B1Q1C1VPFC󰳒2-1󰝌󰵟Boost󰡳⥛󰲴󱭄󱷵ℷ󱢧󱠥Fig.2-1 Conventional Boost PFC topology

Ӵ㒳Boost PFC⬉䏃ⱘ󱬜⥛ϔ㠀󰳼92%󱎺󰧇˄90VAC䕧󰜹˅ˈ󰽖ԩ󱦤催PFC㑻ⱘ󱬜⥛ϔⳈ󱰃⬉⑤ⷨ󰦥ⱘ⛁⚍DŽ䱣ⴔ󰤞󱇐ԧ󰰼ӊ󱡔󱴃ⱘ󰦥󱈩ˈ󱮄󰵟MOSFETⱘ󱇐䗮⬉䰏䗤⏤󰞣󱇣ˈ󰤛󰥟Ѡ󱵕ㅵⱘ󰦡󰧥󱘶󰻡󱓩䍋ⱘ󱤳㗫г󰲴⺇󰣪⸙˄SiC˅Ѡ󱵕ㅵⱘ䆲⫳㗠󱯢󱰒䰡ԢDŽ㗠Ϩ䕃󱓔󰝇󱡔󱴃󰳼PFC⬉䏃Ёⱘ󱑨⫼䖯ϔℹ䰡Ԣњ󱓔󰝇󰰼ӊⱘ󱤳㗫DŽϡ䖛Ӵ㒳Boost PFC⬉䏃Ёⱘ󱭈⌕ḹ󱤳㗫ϔⳈ󱮴⊩󱕫󰠄ḍ󱴀ⱘ󱡥󰠊DŽ󰳼󱶤ѯ󰻻󰡳⥛ⱘ󱑨⫼Ёˈ⬉⑤󱎹⿟󱏜ӮՓ⫼ѠϾ󱭈⌕ḹ󱑊㘨ⱘ󱮍⊩󱴹䰡Ԣ䗮󱗕󱤳㗫ˈԚ䖭⾡󱮍⊩󰹲󰡴њ󱟤󱴀󰩠⬉⑤ⱘԧ⿃DŽ󱑊ϡ㛑Ңḍ󱴀Ϟ㾷󰞇䯂乬DŽ

1983󱑈ˈ󱮴ḹBoost PFC⬉䏃⬅RockWell󰝀󰧌ⱘDaniel M. MitchellㄝҎ󱦤󰟎[4]DŽ䆹󱢧󱠥㒧󱵘󱅲䰙Ϟ󱰃⬅󰜼ḹPFC󰦬󱤶󰰼˄Full Bridge PFC Converter˅ⓨ󰦬㗠󱴹DŽ󰽖󰳒2-2󱠔⼎ˈ󰜼ḹPFCՓ⫼󰲯Ͼ󱓔󰝇ㅵ󱴹󱳓ҷ󱭈⌕ḹⱘ󰡳㛑ˈ󱑊䗮䖛󱮑󰡴䗖󱔧ⱘ偅󰡼󰖵󰧋󱴹󱥻󰠊󱓔󰝇ㅵⱘ󱓔䗮Ϣ󰝇󱮁ҹ󱅲⦄󰡳⥛󰲴󱭄󱷵ℷⱘ󰡳㛑DŽԚ󱰃⬅Ѣ󰲯Ͼ󱓔󰝇ㅵⱘ󱟤󱴀䕗催ǃ󱥻󰠊г󱕜󰻡󱴖ˈ䖭⾡󱢧󱠥󱕜󱇥Փ⫼DŽ󰜼ḹPFC󱓊Ԍ

9

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

󰟎2⾡ㅔ󰣪ⱘ󱢧󱠥——Dual Boost PFC󱢧󱠥󰩠Totem-Pole PFC󱢧󱠥DŽ䖭ϸ⾡󱢧󱠥󰴛󱈲Ѣ󱑓Нⱘ󱮴ḹBoost PFCⱘ㣗⭈ˈ󱅗Ӏⱘ󰤎󰟿ҙҙ󱰃󱓔󰝇ㅵ󰩠Ѡ󱵕ㅵⱘԡ㕂󱳝󱠔ϡ󰧠DŽҢ偅󰡼󱮍󱓣Ϟ󱴹䇈Dual Boost PFCⱘϸϾ󱓔󰝇ㅵ⑤󱵕󰴛󱥹䕧󰟎󰴄ˈ偅󰡼↨䕗ㅔ󰤩DŽ㗠Totem-Pole㒧󱵘Ёⱘ󱓔󰝇ㅵ䳔㽕䱨⾏偅󰡼˗Ң󱎹԰῵󱗕Ϟ󱴹䇈ˈ

Dual Boost PFC⬉䏃ⱘϸϾ󱓔󰝇ㅵ󰧃ҹ󰧠ℹ󱥻󰠊ˈ䮼󱵕偅󰡼󰖵󰧋󱰃ϔḋⱘDŽ⬅䕧󰜹↡㒓⬉󰥟󱴀䑿䗝󱢽󱶤Ͼ󱓔󰝇ㅵ󱎹԰󰳼Boost⢊󱗕DŽ㗠Totem-Pole PFCⱘ偅󰡼㽕󰻡󱴖ⱘ󰻮˗󱎹԰ЁTotem-Pole PFC󱢧󱠥Ӯ䘛󰠄󱓔󰝇ㅵԧѠ󱵕ㅵ󰦡󰧥󱘶󰻡ⱘ䯂乬ˈ㗠⬅ѢDual Boost PFCЁ󱓔󰝇ㅵⱘԧѠ󱵕ㅵҙ󱅲⦄㓁⌕󰡳㛑ˈϡ󱄬󰳼ԧѠ󱵕ㅵⱘ󰦡󰧥󱘶󰻡䯂乬DŽ

󰳒2-2 ⬅󰜼ḹPFCⓨ󰦬󰟎ⱘϸ⾡ㅔ󰣪󱮴ḹPFC󱢧󱠥Fig.2-2 Two evolutive topologies from Full Bridge PFC

󱴀󱭛ҙ󱇍Dual Boost PFCⱘ󱢧󱠥䖯㸠ⷨおˈ󰝇ѢTotem-Pole PFCⱘ䆺㒚ⶹ䆚󰧃󰦖㗗󱭛⤂[5]DŽ󱴀󱭛ϟ䗄󱦤󰦞ⱘ󱮴ḹBoost PFC󰴛󰤩󱣛Dual Boost PFC㒧󱵘DŽ

2.2 󱮴ḹBoost PFC⬉䏃ⱘ󱎹԰󰥳⧚󰦞⡍⚍

󱮴ḹBoost PFC⬉䏃ⱘ󱎹԰⌕⿟ϢӴ㒳Boost󰡳⥛󰲴󱭄󱷵ℷ󱢧󱠥㉏Ԑˈ󰝊󱎹԰⢊󱗕󱣝✻䕧󰜹㒓⬉󰥟ⱘ󱮍󰧥󰧃ҹ󰟚ЎϸϾ䰊↉DŽ󰘛䆒Ϟッ↡㒓Ў☿㒓Lˈϟッ↡㒓Ў䳊㒓NDŽ䰊↉ϔ󰽖󰳒2-3a󱠔⼎˖󱔧䕧󰜹⬉󰥟󰻘ѢVL>VNⱘℷ󰤞󱎹乥󰨼󱳳󰝙󱯊ˈD2󰩠Q2󱎹԰󰳼Boost⢊󱗕DŽQ2󱓔䗮󱯊⌕䖛⬉󱛳L1ǃL2ⱘ⬉⌕󰹲󰡴˄󱮍

10

㄀Ѡゴ󱮴ḹBoost PFC⬉䏃󱢧󱠥ㅔ󱵤

󰧥󰽖󰳒󱠔⼎˅ˈ⬉󱛳󰙼㛑DŽQ2󰝇󱮁󱯊⬉⌕⌕䖛D2󰧥䋳䕑󱦤կ㛑䞣ˈ⌕䖛⬉󱛳L1ǃ

L2ⱘ⬉⌕󰞣󱇣DŽQ1󰳼䆹䰊↉󰝙󰴛⌕䖛󰦡󰧥⬉⌕󰻘Ѣ㓁⌕⢊󱗕ˈ󰦡󰧥⬉⌕⌕㒣Q1󱴀ԧ䖬󱰃󱅗ⱘԧѠ󱵕ㅵ㽕ⳟQ1󱰃󰧺󱳝偅󰡼󰖵󰧋DŽ䰊↉Ѡ󰽖󰳒2-3b󱠔⼎˖󱔧䕧󰜹⬉󰥟󰻘ѢVLCoRoCoRo(a) (b)

󰳒2-3 󱮴ḹPFC󱎹԰῵󱗕󰳒˄a˅VL>VN䰊↉ˈ˄b˅VLFig.2-3 Topological stage of the Bridgeless Boost PFC

(a) Topological stage when VL>VN; (b) Topological stage when VL󱮴ḹBoost PFC󱢧󱠥󱅲䋼Ϟ󱰃ϸϾӴ㒳Boost PFC󱢧󱠥ⱘ㒘󰧜ˈ󰧘㞾䋳䋷󰳼⡍󱅮ⱘ󰤞Ͼ󱎹乥󰨼󱳳󰝙󱎹԰ˈ󰝊󱅗󱯊䯈󰦾󱦤կ⬉⌕㓁⌕ⱘ󰲲䏃DŽ⬅Ѣ⬉䏃󰳼䕧󰜹↡㒓󰻘Ѣϡ󰧠󱯊󱳳󱯊󰧃ҹ㞾󰡼󰟛󱤶󰻘ѢBoost⢊󱗕ⱘ󱓔󰝇ㅵˈϸϾ󱓔󰝇ㅵⱘ偅󰡼󱰃󰧃ҹ󰧠ℹⱘˈ󱠔ҹ󱮴ḹBoost PFC⬉䏃ⱘ󱓔󰝇ㅵ󱥻󰠊󱮍󱓣гϢӴ㒳Boost PFC󰦬󱤶󰰼󱮴󱓖DŽϢӴ㒳Boost PFC⬉䏃ⱘϔ㟈󱗻Փ󱕫󱮴ḹBoost PFC󰦾䳔㾷󰞇󱥻󰠊㢃⠛󱠔䳔󰖵󰧋ⱘ䞛ḋ䯂乬󰖓󰧃ҹ󱮍󰖓ⱘՓ⫼њDŽ

2.3 Ӵ㒳Boost PFC󱢧󱠥Ϣ󱮴ḹBoost PFC󱢧󱠥󱬜⥛ㅔ󱵤

󱴀㡖󱅮󱗻󰟚󱵤њӴ㒳Boost PFC󱢧󱠥󰩠󱮴ḹBoost PFC󱢧󱠥ⱘ󱬜⥛󰦖󱭄ˈ䯤䗄њ󱮴ḹBoost PFC󱢧󱠥󰳼󱬜⥛ϞⱘӬ󰢓DŽ佪󰜜㒭󰟎󰞴⚍󰘛䆒˖1ǃϡ㗗㰥䕧󰜹

EMIⒸ⊶󰰼󱠔󱓩䍋ⱘ󱤳㗫˗2ǃ󰦾󱇍󰷎󱴀ⱘ󱢧󱠥䖯㸠󱬜⥛󰟚󱵤ˈϡ󰣙󱣀󱥻󰠊⬉䏃󰦞偅󰡼󱤳㗫˗3ǃЎњㅔ󰣪󰟚󱵤ˈ󰘛䆒󱮴ḹBoost PFCϸϾ󰟚ゟѢ↡㒓ⱘ⬉󱛳󱘏󱤳㗫ϢӴ㒳Boost PFC⬉󱛳󱤳㗫Ⳍ󱔧DŽ󱮴ḹBoost PFC⬉䏃ⱘ⬉󱛳ㅔ󰣪Ў󰤩Ͼ⬉󱛳

11

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

㕂ѢL↡㒓ϞDŽ

󰲴䕧󰜹㒓⬉󰥟ⱘ󰨼󱳳󱇍⿄󱗻ˈ󱤳㗫󰟚󱵤ҙ󰳼󰤞Ͼ󱎹乥󰨼󱳳󰝙䖯㸠DŽ󰘛䆒󰳒2-4ⱘ⬉䏃Ё䕧󰜹㒓⬉󰥟󰻘ѢVL>VNⱘ󰤞Ͼ󱎹乥󰨼󱳳󰝙ˈ󰳒Ё󱷛󰟎њ䆹󰤞Ͼ󱎹乥󰨼󱳳󰝙⬉⌕ⱘ󱮍󰧥󰩠䏃󱕘ˈ⬅ℸ󰟚󱵤ϸ㗙󰳼󱇐䗮󱤳㗫Ϟⱘ󰤎󰟿DŽ

L1D1B1D3D4D2Q1DsD1D2CoRoQ1Q2CoRo˄a˅ ˄b˅

󰳒2-4 󰤞Ͼ󱎹乥󰨼󱳳󰝙ϸ⾡󱢧󱠥ⱘ⬉⌕䏃󱕘

˄a˅Ӵ㒳Boost PFC⬉䏃⬉⌕䏃󱕘˗˄b˅󱮴ḹBoost PFC⬉䏃⬉⌕䏃󱕘

Fig.2-4 Current paths of two topologies in the half line cycle

(a) Current path of Conventional Boost PFC˗(b) Current path of Bridgeless Boost PFC

ḍ󱥂󰳒2-4Ёϸ⾡󱢧󱠥ⱘ⬉⌕䏃󱕘󰧃󰟚󱵤󰟎󰤞Ͼ󱎹乥󰨼󱳳󰝙󰧘㞾ⱘ⬉⌕䏃󱕘󱑊󱘏㒧Ѣϟ㸼˖

㸼2-1ϸ⾡PFC󱢧󱠥ⱘ⬉⌕䏃󱕘㸼

Fig.2-1 Current paths of two PFC topologies in half line cycle

-------------------- 󱭈⌕ḹѠ󱵕ㅵPFC󰤛󰥟Ѡ󱵕ㅵ󰻘Ѣ󱓔󰝇⢊󱗕ⱘ

MOSFET󰻘Ѣ󰦡󰧥㓁⌕⢊󱗕ⱘ

MOSFETMOSFET󱓔䗮󱯊󰠏⬉

⌕󰜼䏃󱕘MOSFET󰝇󱮁󱯊󰠏⬉

⌕󰜼䏃󱕘

Ӵ㒳Boost PFC⬉䏃

2Ͼ/D1+D4

1Ͼ/Ds 1Ͼ/Q1

󱮴ḹBoost PFC⬉䏃

󱮴1Ͼ/D11Ͼ/Q11Ͼ/Q2

1Ͼ󱓔󰝇MOSFET+1Ͼ㓁⌕

MOSFET

1Ͼ󰤛󰥟Ѡ󱵕ㅵ+1Ͼ㓁⌕

MOSFET

󱮴

1Ͼ󱓔󰝇MOSFET+2Ͼ󱭈⌕ㅵ

1Ͼ󰤛󰥟Ѡ󱵕ㅵ+2Ͼ󱭈⌕ㅵ

12

㄀Ѡゴ󱮴ḹBoost PFC⬉䏃󱢧󱠥ㅔ󱵤

󰟚󱵤Ϟ㸼󰧃ⶹˈҢ󱇐䗮䏃󱕘Ϟⳟ󱮴ḹBoost PFC⬉䏃↣Ͼ󱯊󰠏䛑↨Ӵ㒳Boost

PFC⬉䏃󱇥ϔϾ󱤳㗫󰜗ӊDŽ󰳒2-4aЁⱘL1ǃQ1󰩠Ds㒘󱟤њϔϾ󱅠󱭈ⱘϝッ󰤛󰥟⦃㡖ˈ󰧃ҹ󱡞󱅗Ӏⳟ󱟤ϔϾ󱭈ԧDŽ󰧠⧚󱇚2-4bЁ󱎹԰󰳼Boost⢊󱗕ⱘL1ǃQ1󰩠D1гⳟ԰ϔϾ󱭈ԧDŽ󱅗Ӏⱘ󱎹԰⢊󱗕󱰃󱅠󰜼ϔ㟈ⱘˈ󰝊󱤳㗫󰳼⧚䆎Ϟг󱅠󰜼ϔḋDŽ󰟭󱮴ḹBoost PFC󱢧󱠥Ⳍ󱇍ѢӴ㒳Boost PFC󱢧󱠥󱬜⥛ⱘ󱦤󰤛󱈅󰳼Ѣ󰠡㗙㓁⌕

MOSFETⱘ󱤳㗫Ϣ󰧢㗙󱭈⌕ḹѠ󱵕ㅵⱘ󱤳㗫П󱏂DŽ󰳒2-5㒭󰟎ϸ㗙󰳼䕧󰜹㒓⬉󰥟Ў90VAC󱯊ⱘ󱤳㗫󱇍↨󰳒ˈ䅵ㅫ󱭄󱥂󰷎Ѣ󰰼ӊSPP20N60C3ⱘԧѠ󱵕ㅵ󰩠󱭈⌕ḹ

KBL08ⱘ󱇐䗮󰥟䰡󱳆㒓㦋󱕫DŽ⬅󰳒󰧃㾕󱔧䕧󰜹⬉󰥟ϔ󱅮󱯊ˈ䱣ⴔ󰦬󱤶󰰼䕧󰟎󰡳⥛ⱘ󰹲󰡴ˈ㓁⌕Ѡ󱵕ㅵⳌ󱇍Ѣ󱭈⌕ḹⱘ󱤳㗫䍞󱇣DŽ󰟭󱮴ḹBoost PFC⬉䏃Ⳍ󱇍Ӵ㒳

Boost PFC⬉䏃ⱘ󱬜⥛󱦤󰤛䍞󱯢󱰒DŽ

󱭈⌕ḹ󱤳㗫󰀚󰀙󰀘㓁⌕026)(7󱤳㗫󱤳㗫˄:˅󰀗󰀖󰀕󰀔󰀓󰀘󰀓󰀔󰀓󰀓󰀔󰀘󰀓󰀕󰀓󰀓󰀕󰀘󰀓󰀖󰀓󰀓󰦬󱤶󰰼䕧󰟎󰡳⥛˄:˅󰳒2-5 󱭈⌕ḹ󱤳㗫Ϣ㓁⌕MOSFET󱤳㗫󱳆㒓󱇍↨

Fig.2-5 Loss curves of Rectifier Bridge and freewheeling MOSFET

⬅Ϟ䗄󰟚󱵤󰧃ⶹˈ󱮴ḹBoost PFC⬉䏃㽕↨Ӵ㒳Boost PFC⬉䏃ⱘ󱬜⥛󱳝󱠔󱦤催DŽ󰳼󰻻󰡳⥛ⱘ󱑨⫼󰴎󰧜󱳝󱕜󰻻Ӭ󰢓DŽ󰳒2-5Ёⱘ㓁⌕MOSFET󱤳㗫󱰃󱣝✻󰦡󰧥⬉⌕󱅠󰜼⌕㒣󰝊ԧѠ󱵕ㅵ󱴹䅵ㅫⱘDŽ⬅󰠡䗄󰧃ⶹ󱮴ḹBoost PFCϸϾMOSFETⱘ偅󰡼󰖵󰧋󰧃ҹ󰧠ℹˈ󰟭MOSFET󰳼㓁⌕󱯊гӮ󰧠ḋ󰦫󰠄偅󰡼⬉󱑇ⱘ󱥻󰠊ˈ䚼󰟚󰦡󰧥⬉⌕Ӯ⌕㒣MOSFET󱴀䑿DŽ󰟭󱅲䰙󱎹԰Ёⱘ󱤳㗫↨󰟽⫼ԧѠ󱵕ㅵ󰥟䰡䅵ㅫ󱠔󱕫󰘐䖬㽕Ԣˈϡ䖛䖭⾡󱬜⥛ⱘ󱦤󰤛󱑊ϡ󱯢󱰒DŽ

13

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

㄀ϝゴ󱮴ḹBoost PFC⬉䏃󱥻󰠊󱮍Ḝ䆒䅵

󱮴ḹBoost PFC⬉䏃󰳼󱬜⥛󱮍䴶ⱘӬ󰢓󰞇󱅮њ󰝊ⷨおӋ󰘐DŽ󰽖ԩ䗝󱢽䗖󰧜󱮴ḹ

Boost PFC󱢧󱠥ⱘ󱥻󰠊󱮍󱓣󰦞䆒䅵󱅠󰭘ⱘ󱥻󰠊⬉䏃󱰃䆹󱢧󱠥󰳼󱅲䰙󱑨⫼Ё䳔㽕㾷󰞇ⱘ䯂乬DŽ佪󰜜󰲲乒󱮴ḹBoost PFC⬉䏃󱥻󰠊䆒䅵ЁӮ䘛󰠄ⱘ䲒⚍󰦞󰜜󰠡ⱘϔѯ󱥻󰠊󱮍ḜDŽ

3.1 󱮴ḹBoost PFC⬉䏃󱥻󰠊䲒⚍󰦞󱮍Ḝ󰲲乒

Ӵ㒳䖲㓁⬉⌕῵󱓣PFC󱥻󰠊ϔ㠀䞛⫼󰷎ѢЬ⊩󰰼ⱘ󱑇󰴛⬉⌕῵󱓣󱥻󰠊󱮍⊩ˈ՟󰽖󰝌󰵟ⱘUC3584㢃⠛DŽ䖭⾡󱥻󰠊󱮍⊩䳔㽕ϸϾẔ⌟䞣˖䕧󰜹㒓⬉󰥟󱭈⌕󰧢ℷ󱓺󰤞⊶⬉󰥟󰦖㗗󰩠⬉󱛳⬉⌕Ẕ⌟󰖵󰧋󰦖㗗DŽ󰽖󰳒3-1󱠔⼎ˈӴ㒳Boost PFC⬉䏃Ё䖭ϸϾ䞣䛑↨䕗󱆍󱯧㦋󰦪DŽ䕧󰜹ℷ󱓺󰤞⊶⬉󰥟󰦖㗗󰧃Ⳉ󱥹󰳼󱭈⌕ḹ󰧢䞛ḋˈ⬉󱛳⬉⌕󰖵󰧋󰧃ҹՓ⫼󰳒3-1aЁⱘ䞛ḋ⬉䰏Ẕ⌟󱮍󱓣ˈг󰧃ҹՓ⫼󰳒3-1bЁ⬉⌕Ѧ󱛳󰰼䞛ḋ󱮍󱓣DŽ󰠡㗙䞛ḋ⬉䰏ⱘ󱤳㗫䕗󰻻ˈ䗖⫼ѢЁ󱇣󰡳⥛󱑨⫼󰴎󰧜DŽ󰧢㗙⬉⌕Ѧ󱛳󰰼䞛ḋ󱤳㗫󱕜󱇣ˈ䗖⫼Ѣ󰻻󰡳⥛󱑨⫼󰴎󰧜DŽ

L1D1L1D1Q1CoVPFCQ1CoVPFC˄a˅ ˄b˅󰳒3-1 Ӵ㒳Boost PFC䕧󰜹㒓⬉󰥟󰦞⬉󱛳⬉⌕䞛ḋ󱮍󱓣˄a˅⬉䰏䞛ḋ⬉󱛳⬉⌕˗˄b˅⬉⌕Ѧ󱛳󰰼䞛ḋ⬉󱛳⬉⌕

Fig.3-1 Input voltage sensing and inductor current sensing methods of Conventional Boost PFC.

(a) Current sense resistor; (b) Current sense transform

Ԛ󱰃󰳼󱮴ḹBoost PFC⬉䏃Ё⬅Ѣ≵󱳝󱭈⌕ḹⱘ󱄬󰳼ˈ㒓⬉󰥟󱭈⌕󰧢ℷ󱓺󰤞⊶⬉󰥟󰦖㗗󱈅󱮴⊩Ⳉ󱥹䞛ḋDŽ󰧠⧚⬅Ѣ󱮴ḹBoost PFC⬉󱛳⬉⌕ⱘ󱮍󰧥󱰃ҹϸ󰗡󱎹乥󰨼󱳳ϡ󱮁󰦬󰣪ⱘˈ󰽖ԩ㦋󱕫󱥻󰠊㢃⠛󱠔䳔ⱘ⬉󱛳⬉⌕󰖵󰧋г󱰃䳔㽕㾷󰞇ⱘ䯂乬DŽϟ䴶󱈅ㅔ󰤩󰲲乒ҹ󱕔ⱘ󱮴ḹBoost PFC⬉䏃󱥻󰠊󱮍ḜDŽ

󱳔󰟱Rockwell󰝀󰧌󱦤󰟎󱮴ḹBoost PFC󱢧󱠥󱯊䞛⫼њ󰳒3-2Ёⱘ󱮍⊩󱴹󱥻󰠊󱮴ḹBoost PFC⬉䏃[3]DŽPFC󱥻󰠊󱮍⊩г󱰃󰝌󰵟ⱘ󰷎ѢЬ⊩󰰼ⱘ󱑇󰴛⬉⌕῵󱓣󱥻

14

㄀ϝゴ󱮴ḹBoost PFC⬉䏃󱥻󰠊󱮍Ḝ䆒䅵

󰠊ˈ󰝊Ё㒓⬉󰥟䞛ḋ󱰃䗮䖛󱭈⌕ḹB1󱇍䕧󰜹㔥󰥟󱭈⌕󰧢󰟚󰥟㦋󰦪ⱘˈ䖭⾡󱮍⊩󰹲󰡴њϔϾ󱭈⌕ḹˈӮ󱓩䍋󱤳㗫󰦞󰹲󰡴󱟤󱴀DŽ⬉󱛳⬉⌕Ẕ⌟Փ⫼њ⬉⌕Ѧ󱛳󰰼䞛ḋ󱮍⊩ˈ⬉⌕Ѧ󱛳󰰼㦋󱕫ⱘ⬉󱛳⬉⌕󰖵󰧋䳔㽕󰝡㒣䖛B2󱭈⌕󰧢󱠡㛑󱦤կ㒭󱥻󰠊⬉䏃Փ⫼DŽ⬅ℸ󰧃㾕䖭⾡󱮴ḹBoost PFC󱥻󰠊󰖵󰧋ⱘ䞛ḋ󱮍󱓣Ⳍ󱔧󰻡󱴖㗠Ϩϡ󱟤❳DŽ

Vout󰳒3-2 Rockwell󰝀󰧌󱦤󰟎ⱘ󱮴ḹBoost PFC󱥻󰠊󱮍⊩

Fig.3-2 Control strategy of Bridgeless Boost PFC provided by Rockwell

󰳒3-3 Փ⫼L4981󱥻󰠊ⱘ󱮴ḹBoost PFC⬉䏃Fig.3-3 Bridgeless Boost PFC based on L4981 controller

2002󱑈ST󰝀󰧌󱇱䆩󱇚L4981PFC󱥻󰠊㢃⠛Փ⫼󰳼󱮴ḹBoost PFC󱢧󱠥ЁDŽϡ䖛L4981ձ✊󱰃ϔ⾡Ӵ㒳ⱘ󰷎ѢЬ⊩󰰼ⱘPFC󱥻󰠊㢃⠛ˈ󱭛⤂[6]Ё㒭󰟎њ󰽖󰳒3-3ⱘ⬉䏃䆒䅵󰳒DŽ󰝊Ё䕧󰜹㒓⬉󰥟䞛ḋՓ⫼њ󰻡󱴖ⱘ“⬉⌕䬰”⬉䏃DŽ⬉󱛳⬉⌕ⱘ䞛ḋՓ⫼њϸϾ⬉⌕Ѧ󱛳󰰼󰟚󰟿Ẕ⌟󱓔󰝇ㅵ⬉⌕󰩠Ѡ󱵕ㅵ⬉⌕ˈ㒘󰧜󰧢䖬󰥳⬉󱛳⬉⌕DŽẔ⌟󱓔󰝇ㅵ⬉⌕ⱘ⬉⌕Ѧ󱛳󰰼󰡃䖍㒩㒘Փ⫼њϔ⾡Ё󱖗󱢑󰼈ⱘ䕧󰟎󱮍

15

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

󱓣ˈ㛑󰻳䗖⫼Ѣ󱮴ḹBoost PFC䖭⾡⡍⅞ⱘ㒧󱵘DŽ䆹⾡Ẕ⌟󱮍⊩䰡Ԣњ󱤳㗫ˈ󱥻󰠊󱬜󱵰⧚󱛇ˈ󱰃ϔ⾡↨䕗󰽑ⱘ󱮴ḹBoost PFC⬉󱛳⬉⌕Ẕ⌟㾷󰞇󱮍ḜDŽ󰝋ԧ󱎹԰󰥳⧚󱇚󰳼󰧢㓁ゴ㡖Ё䆺䗄DŽ

󰳒3-4 Tyco󰝀󰧌󱮴ḹBoost PFC󱢧󱠥󱥻󰠊󰥳⧚󰳒

Fig.3-4 Bridgeless Boost PFC control schematic introduced by Tyco

2005󱑈Tyco󰝀󰧌󰳼ⷨお󱮴ḹBoost PFC⬉䏃ⱘ󰷎⸔Ϟ󱥼󰟎㄀ѠҷPFC῵󰴫flowPFC0-HEҹ󰦞fastPACK0-PFCDŽ󱭛⤂[7]Ё㒭󰟎њ󰳒3-4󱠔⼎ⱘ󱮴ḹBoost PFC⧚䆎󱥻󰠊󰳒DŽTyco󰝀󰧌䞛⫼ϔ⾡⡍⅞ⱘ⬉䰏䞛ḋ󱮍⊩󱴹㦋󱕫⬉󱛳⬉⌕󰖵󰧋ˈ󰽖󰳒󱠔⼎,Փ⫼Ѡ󱵕ㅵD1ǃD2󱇚㓁⌕⬉⌕䞡󱮄󱇐󰧥󰥇󰧃󰳼І㘨ⱘ⬉䰏ϞẔ⌟󰠄⬉󱛳⬉⌕DŽ䆹󱮍⊩󰧃ҹㅔ󰤩⿄ПЎ⬉⌕󱇐󰧥䞛ḋ⊩DŽ䖭⾡󱮍⊩Ⳍ󱔧ㅔ󰤩ˈ⬉䰏䞛ḋ󰖵󰧋㽕↨⬉⌕Ѧ󱛳󰰼󱳈㊒⹂DŽԚ󱰃󰳼⬉⌕ⱘ䏃󱕘Ϟ⏏󰡴њϔϾ󱎹乥Ѡ󱵕ㅵ󰩠ϔϾ䞛ḋ⬉䰏ˈ󱬜⥛󱯢󱰒䰡ԢDŽ䳔㽕⊼󱛣ⱘ󱰃䆹󰳒ЁՓ⫼ⱘ󱰃󱮴ԧѠ󱵕ㅵⱘIGBTDŽ㢹䞛⫼MOSFET󰟭󰦜䳔㽕󰡴󰜹2Ͼ󰦡І㘨Ѡ󱵕ㅵ󱴹䰏󱣵㓁⌕⬉⌕⌕䖛MOSFETDŽ󱕜󱯢󱰒ˈ⬉⌕󱇐󰧥Ẕ⌟⊩䰡Ԣњ󱮴ḹBoost PFC󱬜⥛ϞⱘӬ󰢓ˈ⫮㟇󰝊󱬜⥛ԢѢӴ㒳Boost PFC󱢧󱠥ˈ󰳼󱅲䰙Ё󱑊󱮴Ӌ󰘐DŽ

䗮䖛󱇍ҹ󱕔󱥻󰠊󱮍Ḝⱘ󰲲乒󰧃ҹ󰦥⦄ˈ󰽖ԩㅔ󰤩󱳝󱬜ⱘ㾷󰞇䕧󰜹㒓⬉󰥟󰩠⬉󱛳⬉⌕ⱘ䞛ḋ䯂乬󱰃󱮴ḹBoost PFC󱢧󱠥󱥻󰠊⬉䏃䆒䅵ⱘ󰝇䬂DŽ󰳼󱅠󰭘󱥻󰠊󱮍Ḝⱘ󰧠󱯊䖬㽕⊼󱛣ϡ㛑󱓩䍋䖛󰻻ⱘ󱤳㗫ˈ󰧺󰟭Ӯ󱕅󰪡󱮴ḹBoost PFC⬉䏃ⱘ󱬜⥛Ӭ󰢓DŽ

3.2 󰷎Ѣ󰤩󰨼󱳳󱥻󰠊ⱘ󱮴ḹBoost PFC⬉䏃

ҹ󱕔󱮴ḹBoost PFC󱥻󰠊󱮍Ḝ䛑Ⳍ󱔧󰻡󱴖ˈ󱮶㽕㾷󰞇Ӵ㒳PFC󱥻󰠊㢃⠛󱠔䳔ⱘ䕧󰜹ℷ󱓺󰤞⊶㒓⬉󰥟ⱘ䞛ḋˈ󰦜㽕󱇍ϡ󱮁󰦬󰣪󱮍󰧥ⱘ⬉󱛳⬉⌕䖯㸠Ẕ⌟DŽ󱠔ҹ

16

㄀ϝゴ󱮴ḹBoost PFC⬉䏃󱥻󰠊󱮍Ḝ䆒䅵

󱴀󱭛󰳼󱥻󰠊󱮍Ḝ䆒䅵󱮍䴶ⱘⳂ󱷛󱰃󱡒󰠄ϔ󰼫ㅔ󰤩ǃ󰧃䴴ⱘ󱥻󰠊󱮍Ḝ󱴹ㅔ󰣪󱮴ḹ

Boost PFC⬉䏃ⱘ󱥻󰠊󰻡󱴖󱗻DŽⳂ󰠡㕢󰳑󰡴󱎲󰻻󱄺K.Smedley󱬭󱥜󱦤󰟎ⱘ󱮄󰵟󱥻󰠊󱡔󱴃——󰤩󰨼󱳳󱥻󰠊˄One-Cycle Control˅󱏆㒣䖤⫼󰠄PFC⬉䏃䆒䅵ПЁˈՓ⫼њ䖭⾡󱥻󰠊󱡔󱴃ⱘ󰡳⥛󰲴󱭄󱷵ℷ㢃⠛г󱮹Ⲟ󱟤❳DŽ䖭⾡Փ⫼њ󰤩󰨼󱳳󱥻󰠊󱡔󱴃ⱘPFC㢃⠛󱳝ⴔ㒧󱵘ㅔ󰤩ǃ󱮴䳔䕧󰜹㒓⬉󰥟䞛ḋǃ󰨼䖍󰜗ӊ󱭄䞣󱇥ㄝӬ⚍DŽ󱇸󰝊󱰃󱮴䳔䕧󰜹㒓⬉󰥟䞛ḋⱘӬ⚍󱇍Ѣㅔ󰣪󱮴ḹBoost PFCⱘ󱥻󰠊⬉䏃󱰃Ⳍ󱔧󱳝󱛣НⱘDŽ󱴀㡖佪󰜜㒭󰟎󰤩󰨼󱳳󱥻󰠊ⱘ󰷎󱴀ὖ󱗉󰩠󰥳⧚ˈ✊󰧢ҟ㒡ϸ⾡Փ⫼њ󰤩󰨼󱳳󱥻󰠊󱡔󱴃ⱘPFC㢃⠛󰦞⡍⚍DŽ

3.2.1 󰤩󰨼󱳳󱥻󰠊PFC⬉䏃ⱘ󰥳⧚󰦞⬉䏃󱅲⦄

PFC⬉䏃ⱘ󱥻󰠊Ⳃⱘ󱰃㽕Փ󱕫䕧󰜹⬉⌕igⱘ󱎹乥⊶󱔶˄50Hz󱟪60Hz˅䎳䱣䕧󰜹⬉󰥟⊶󱔶vgˈ󰧠󱯊󰦜㽕󰖱󱣕䕧󰟎⬉󰥟ЎVo˄󰜕䆌ϔ󱅮㒍⊶˅DŽ佪󰜜󱅮НvgeЎ䕧󰜹⬉󰥟vgⱘ㒱󱇍󰘐ˈ󰥇˖

­°vg󰀁󰀁󰀁󰀁󰀁󰀁vg!0

vge ®

°¯󰀐vg󰀁󰀁󰀁󰀁󰀁vg󰀟0

󱓣ЁvgЎPFC⬉䏃䕧󰜹㔥󰥟ⱘⶀ󱯊󰘐DŽ󰧠ḋ󱅮НigeЎ䕧󰜹⬉⌕igⱘ㒱󱇍󰘐ˈ󰥇˖

˄3.1˅

­°ig ig!0ige ®

°¯󰀐ig ig󰀟0

󱓣ЁigЎPFC⬉䏃䕧󰜹⬉⌕ⱘⶀ󱯊󰘐DŽ󰦬󱤶󰰼󰧃ҹㄝ󱬜ЎϔϾ⬉䰏ReDŽ󰟭󱳝˖

˄3.2˅

㢹󱥻󰠊⬉䏃ⱘ󱥻󰠊ㄪ⬹⒵䎇њ䕧󰜹⬉⌕Ϣ䕧󰜹⬉󰥟󱟤↨՟ϨⳌԡϔ㟈ˈ󱭈Ͼ

vge Reuige

󱓣ЁReЎ⬅䕧󰜹ッⳟ䖛󰦏ⱘPFC󰦬󱤶󰰼ㄝ󱬜⬉䰏DŽ

˄3.3˅

󱇍ѢBoost㉏󰵟ⱘ󰦬󱤶󰰼󱴹䇈ˈ󰝊䕧󰜹⬉󰥟ǃ䕧󰟎⬉󰥟󰩠󱓔󰝇ㅵ󰤴ぎ↨П䯈ⱘ󰝇㋏Ў˖

vge Vou󰀋1󰀐d󰀌˄3.4˅˄3.5˅

󰧜󱑊󱓣˄3.3˅󰩠󱓣˄3.4˅󰧃󱕫˖

Reuige Vou󰀋1󰀐d󰀌󱅮НRsЎPFC󰦬󱤶󰰼Ё⬉⌕Ẕ⌟⬉䰏DŽ󱇚󱓣˄3.5˅ϸ䖍󰧠ЬҹRs󱑊󱭈⧚󰧃󱕫˖

Rsuige

ҸVm

VouRs

u󰀋1󰀐d󰀌Re

˄3.6˅

VouRs

ˈ󰣪ㅔ󱑊󱭈⧚Ϟ󱓣󱕫˖Re

Vm󰀐igeRs Vmd

˄3.7˅

17

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

󱟪

igeRs Vmd

˄3.8˅

󱓣˄3.8˅Ёd 1󰀐d󰧃⿄ПЎ󱓔󰝇ㅵⱘ󰝇󱮁󰤴ぎ↨DŽϞ䗄ϸ󱓣󰥇Ў󰤩󰨼󱳳󱥻󰠊PFC⬉䏃󱳔䞡㽕ⱘ󱭄󱄺῵󰵟DŽVm󰳼⧚䆎Ϟ󱰃ϢVo󱟤↨՟ⱘⳈ⌕⬉󰥟ˈ㢹󰤴ぎ↨

d󱟪d󰧃ҹ⒵䎇󱓣˄3.7˅󱟪󱓣˄3.8˅ˈ󰟭󰧃ҹ󰖱䆕䕧󰜹⬉⌕igeϢ䕧󰜹⬉󰥟vge⊶󱔶

󱟤↨՟󱑊󰧠Ⳍԡˈҹ󱅲⦄PFC󰡳㛑DŽ䆒󰦬󱤶󰰼ⱘ󱓔󰝇󰨼󱳳ЎTˈ󱵘䗴󰤩󰨼󱳳󱥻󰠊󱮍⿟㒘󰽖ϟ˖

­V1(t) Vm󰀐ige(t)Rs

°,®󰀃󰀃󰀃󰀃󰀃󰀃0󰀟W󰀟T,0󰀟t󰀟2S1dT

°V2(t) ³0VmdW¯T

󱟪˖

˄3.9˅

V1(t) ige(t)Rs

­°

,,®󰀃󰀃󰀃󰀃󰀃󰀃0󰀟W󰀟T,0󰀟t󰀟2S1dT

°V2(t) ³0VmdW¯T

˄3.10˅

󱥻󰠊󱮍⿟㒘󱳝󱓣˄3.9˅󰩠󱓣˄3.10˅ϸ⾡㉏󰵟ˈ󱅗Ӏ󰟚󰟿󱇍󱑨ⴔ󱥻󰠊󱓔󰝇ㅵⱘ󱓔䗮󰤴ぎ↨󰩠󱥻󰠊󱓔󰝇ㅵⱘ󰝇󱮁󰤴ぎ↨ϸ⾡󱥻󰠊󱮍⊩DŽ󰳼⬉䏃󱅲⦄Ϟ󱳔󰝇䬂ⱘ󰤎󰟿󱈅󱰃󱓣˄3.9˅󱥻󰠊󱮍⿟󱇍󱑨ⱘ⬉䏃Ё󱯊䩳󰖵󰧋CLOCK󱰃󱓔󰝇ㅵ󱓔䗮ⱘ󱥻󰠊󰖵󰧋ˈ㗠󱓣˄3.10˅󱇍󱑨ⱘ⬉䏃Ё󱯊䩳󰖵󰧋CLOCK󱰃󱓔󰝇ㅵ󰝇󱮁ⱘ󱥻󰠊󰖵󰧋DŽ󱠔ҹг󱇚󱓣˄3.9˅㸼䖒ⱘ󱥻󰠊῵󱓣⿄԰“󰧢⊓䇗󰠊”ˈ󱓣˄3.10˅㸼䖒ⱘ󱥻󰠊῵󱓣⿄԰“󰠡⊓䇗󰠊”DŽ⬅󱥻󰠊󱮍⿟㒘󰧃ⶹˈ󰦾㽕䗮䖛⬉䏃󱅲⦄V1(t)󰩠V2(t)ⱘ↨䕗󰥇󰧃⹂󱅮󰤴ぎ↨d󰩠dDŽV1(t)Ёⱘige󰧃䗮䖛䞛ḋ䕧󰜹⬉󱛳⬉⌕㦋󱕫DŽV2(t)Ёⱘ⿃󰟚乍󰟭⬅󱏺󱳝󰻡ԡ󱓔󰝇ⱘ⿃󰟚⦃㡖˄Integrator with reset˅󱅲⦄DŽ󰳒3-5󰩠󰳒3-6󰟚󰟿㒭󰟎њ䞛⫼“󰧢⊓䇗󰠊”󰵟󰤩󰨼󱳳󱥻󰠊ⱘ󱮴ḹBoost PFC⬉䏃㒧󱵘󰩠󱅗ⱘ󰝇䬂⊶󱔶DŽ

18

㄀ϝゴ󱮴ḹBoost PFC⬉䏃󱥻󰠊󱮍Ḝ䆒䅵

D1D2CoQ1Q2VoQQV2(t) 1dTVmdWT³0VmVrefV1(t) Vm󰀐ige(t)Rsige(t)RsVm󰳒3-5 Փ⫼“󰧢⊓䇗󰠊”󰵟󰤩󰨼󱳳󱥻󰠊ⱘ󱮴ḹBoost PFC⬉䏃Fig.3-5 Bridgeless Boost PFC circuit using “Trailing edge” mode control

“󰧢⊓䇗󰠊”󰵟󰤩󰨼󱳳󱥻󰠊PFC⬉䏃Ḛ󰳒󰽖ϟ˖䕧󰟎⬉󰥟Vo䗮䖛⬉䰏Ra󰩠Rb󰟚󰥟󰧢󱥹󰜹䇃󱏂󱬒󰻻󰰼OP1󰦡󰧥䕧󰜹ッ,䗮䖛PI䇗㡖󱕫󰠄󱥻󰠊⬉󰥟VmDŽVmϔ䏃Ϣ⬉󱛳⬉⌕Ẕ⌟󰖵󰧋ige(t)Rs䖤ㅫ󱕫󰠄V1(t)ˈ󰦺ϔ䏃㒣䖛󱏺󱳝󰻡ԡ󱓔󰝇ⱘ⿃󰟚󰰼󱕫󰠄

V2(t)DŽП󰧢V1(t)ϢV2(t)󱥹󰜹↨䕗󰰼COMP䖯㸠↨䕗ˈҹ⹂󱅮󱓔󰝇ㅵ󰤴ぎ↨dDŽ

󰝇䬂⊶󱔶󰽖󰳒3-6󱠔⼎ˈϔϾ󰨼󱳳󰝙ⱘ󱎹԰⢊󱗕󰽖ϟ󱠔䗄˖佪󰜜t1󱯊󰠏󱯊䩳

CLOCKѻ⫳ⱘ󱯊䩳㛝󰞆䗮䖛RESET㛮󱇚RS㾺󰦥󰰼㕂ԡDŽQッ䕧󰟎催⬉󱑇ˈ䗮䖛偅󰡼⬉䏃󱓔䗮󱓔󰝇ㅵDŽ󰧠󱯊⬅⬉󱆍C3󱵘󱟤ⱘ⿃󰟚󰰼󱇍󱥻󰠊⬉󰥟Vm⿃󰟚ˈϝ㾦⊶V2(t)󱓔󰾟Ϟ󰤛DŽⳈ󰠄t2󱯊󰠏V2(t)䖒󰠄V1(t)ⱘ󱐙󰘐ˈ↨䕗󰰼COMP㗏䕀䕧󰟎催

Qッ䕧󰟎Ԣ⬉󱑇󱓔󰝇ㅵ󰝇󱮁DŽ⬉󱑇󱇚RS㾺󰦥󰰼󰻡ԡDŽⳈ󰠄ϟϔϾ󰨼󱳳󰟱󰾟CLOCK󱯊䩳󱴹Ј˄t3󱯊󰠏˅󰦜󱓔󰾟䞡󰻡Ϟ䗄䖛⿟DŽ

V1󰀋t󰀌 Vm󰀐ige(t)uRsige(t)uRsVm³t1dT0VmdWt2t3t1t2t3dWTd󰳒3-6 “󰧢⊓䇗󰠊”󰵟󰤩󰨼󱳳󱥻󰠊PFC⬉䏃⊶󱔶󰳒Fig.3-6 Waveforms of “Trailing edge” mode control PFC circuit

19

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

󰳒3-7Ϣ󰳒3-8󰟚󰟿㒭󰟎њ䞛⫼“󰠡⊓䇗󰠊”󰵟󰤩󰨼󱳳󱥻󰠊ⱘ󱮴ḹBoost PFC⬉䏃㒧󱵘󰩠󱅗ⱘ󰝇䬂⊶󱔶ˈ󰝊󱎹԰῵󱓣Ϣ“󰧢⊓䇗󰠊”῵󱓣󱴀䋼Ⳍ󰧠ˈ󱬙ϡ󰝡㌃䗄󰝊󱎹԰䖛⿟DŽϟ䴶󱇍ϸ⾡󱎹԰῵󱓣ⱘ⡍⚍󰩠󰤎󰟿󰘮󰟎䇈󱯢DŽ

D1D2CoQ1Q2VoQQV2(t) 1dTVmdWT³0VmVrefV1(t) ige(t)Rsige(t)Rs󰳒3-7Փ⫼“󰠡⊓䇗󰠊”󰵟󰤩󰨼󱳳󱥻󰠊ⱘ󱮴ḹBoost PFC⬉䏃Fig.3-7 Bridgeless Boost PFC circuit using “Leading edge” mode control

VmV1󰀋t󰀌 ige(t)uRsdT³t1t1t2t30VmdWt2t3dWTd󰳒3-8 “󰠡⊓䇗󰠊”󰵟󰤩󰨼󱳳󱥻󰠊PFC⬉䏃⊶󱔶󰳒Fig.3-8 Waveforms of “Leading edge” mode control PFC circuit

󰧠󰻻󰻮󱭄󱱂䗮ⱘPWM󱥻󰠊󱮍󱓣ϔḋˈ“󰧢⊓䇗󰠊”󰵟󰤩󰨼󱳳󱥻󰠊󱰃䗮䖛䇗󰠊󱓔󰝇ㅵⱘ󱓔䗮󰤴ぎ↨d󱴹󱅲⦄󱠔䳔󱥻󰠊ⱘDŽ䖭⾡󱥻󰠊󱮍󱓣Ё󱯊䩳󰖵󰧋CLOCK󱰃⫼󱴹㾺󰦥󱓔󰝇ㅵ偅󰡼ⱘϞ󰤛⊓ⱘˈ㗠偅󰡼ⱘϟ䰡⊓㾺󰦥󰟭󱰃䗮䖛󰞇󱅮󰤴ぎ↨ⱘ↨䕗󰰼䕧󰟎󱴹󱥻󰠊ⱘDŽ㗠“󰠡⊓䇗󰠊”󰵟󰤩󰨼󱳳󱥻󰠊῵󱓣ЁCLOCK󰖵󰧋󰞇󱅮󱓔󰝇ㅵ偅󰡼ⱘϟ䰡⊓ˈ䗮䖛䇗󱭈󱓔䗮󱯊󰠏󱴹󱬍󰦬󰤴ぎ↨DŽг󰧃ҹㅔ󰤩ⱘⳟ԰󱰃䗮䖛䇗󰠊󱓔󰝇ㅵⱘ󰝇󱮁󰤴ぎ↨d󱴹䖒󰠄󱥻󰠊ⳂⱘDŽ

⬅ϸ⾡䇗󰠊῵󱓣ⱘ⊶󱔶󰳒󰧃ҹⳟ󰟎ˈ“󰧢⊓䇗󰠊”῵󱓣ЁV1(t) V2(t) 󱯊󱇍󱑨њ⬉󱛳⬉⌕䖒󰠄њ䆹󰨼󱳳󰝙ⱘ󱳔󰻻󰘐ˈг󱈅󱰃䇈䆹⾡󱥻󰠊῵󱓣󱰃ϔ⾡󱋄󰘐⬉⌕῵󱓣

20

㄀ϝゴ󱮴ḹBoost PFC⬉䏃󱥻󰠊󱮍Ḝ䆒䅵

󱥻󰠊DŽ㗠󱋄󰘐⬉⌕󱥻󰠊῵󱓣󰧃ҹㅔ󰣪⬉⌕䞛ḋⱘ󰻡󱴖󱗻ˈ󰥇󰦾䳔㽕Ẕ⌟󱓔󰝇ㅵ⬉⌕󰥇󰧃㦋󱕫⬉󱛳⬉⌕ⱘ󱋄󰘐󰖵󰧋󰦏Ϣ䬃啓⊶↨䕗󰥇󰧃⹂󱅮󱓔䗮󰤴ぎ↨dDŽ󰳼3.2.3㡖Ёҟ㒡ⱘIR1150S󰥇Ўϔ⾡󰦾䳔㽕䞛ḋ󱓔󰝇ㅵ⬉⌕⊶󱔶󰥇󰧃󱎹԰ⱘ“󰧢⊓䇗󰠊”󰵟󰤩󰨼󱳳PFC㢃⠛DŽ

󰳼“󰠡⊓䇗󰠊”῵󱓣Ёˈ󱔧⬉󱛳⬉⌕䞛ḋ󰖵󰧋ϟ䰡󰠄ϢVmⱘ⿃󰟚⬉󰥟ⳌѸ󱯊ˈ↨䕗󰰼㗏䕀󱑊㾺󰦥њ󱓔󰝇ㅵ偅󰡼ⱘϞ󰤛⊓DŽ䖭⾡῵󱓣⧚䆎Ϟ󰦾䳔㽕⬉󱛳⬉⌕ⱘϟ䰡⊓󰥇⬉䏃ЁѠ󱵕ㅵ⬉⌕󰥇󰧃⹂󱅮󰝇󱮁󰤴ぎ↨dDŽԚ󱰃󱅲䰙Փ⫼Ё㢹󰦾䞛ḋѠ󱵕ㅵ⬉⌕ˈ󰟭󰳼⬉䏃󰨃󰡼󱯊󰠏󰳒3-7Ё↨䕗󰰼COMPⱘ󰦡󰧥䕧󰜹ッ󱇚󱮴ӏԩ󰖵󰧋ˈ↨䕗󰰼COMPⱘ䕧󰟎ϔⳈЎ催ˈ󱓔󰝇ㅵӮ󱣕㓁󱇐䗮DŽ䖭󱇚󱇐㟈PFC⬉󱛳󰳼󰨃󰡼󱯊佅󰩠DŽ󱠔ҹ“󰠡⊓䇗󰠊”󰵟󰤩󰨼󱳳󱥻󰠊PFC⬉䏃㢹㗗㰥󰦾䞛ḋѠ󱵕ㅵ⬉⌕󱈅䳔㽕䆒䅵ϔϾ󱅠󰭘ⱘ󰨃󰡼⬉䏃DŽ

“󰠡⊓䇗󰠊”󰵟󰤩󰨼󱳳󱥻󰠊󱇍󱮴ḹBoost PFC󱰃Ⳍ󱔧󱳝󰨌󱓩󰡯ⱘDŽ󰲴Ў㢹㛑󰻳󱅠󰭘󰨃󰡼⬉䏃ˈ󰟭󰧃󰳼󱮴ḹBoost PFCⱘ䕧󰟎Ⳉ⌕󰴄Ϟ󱬒㕂ϔϾ⬉⌕⬉䰏󱟪⬉⌕Ѧ󱛳󰰼󱴹䞛ḋ󱥻󰠊󱠔䳔ⱘѠ󱵕ㅵ⬉⌕DŽ󰻻󰻻ㅔ󰣪њ󱮴ḹBoost PFC⬉⌕䞛ḋⱘ󰻡󱴖⿟󱑺DŽϡ䖛Ⳃ󰠡󱑊󱮴䗖⫼ⱘ󱥻󰠊㢃⠛ˈՓ⫼DSP󱅲⦄䆹⾡󱥻󰠊󱇚󱰃ϔϾ䕗󰽑ⱘ㾷󰞇󱮍ḜDŽ

3.2.2 󰤩󰨼󱳳󱥻󰠊PFC㢃⠛ㅔҟ

Ⳃ󰠡Փ⫼њ󰤩󰨼󱳳󱥻󰠊󱡔󱴃ⱘ󰡳⥛󰲴󱭄󱷵ℷ㢃⠛󰦾󱳝ϸ⾡ˈ󰟚󰟿󱰃㣅亲󰞠󰝀󰧌˄Infineon Technologies AG˅Ѣ2003󱑈󱥼󰟎ⱘICE1PCS01󰩠2005󱑈󰳑䰙󱭈⌕󰰼󰝀󰧌˄International Rectifier˅󱥼󰟎ⱘIR1150SDŽICE1PCS01䞛⫼њ“󰠡⊓䇗󰠊”󰤩󰨼󱳳󱥻󰠊󱡔󱴃ˈ㗠IR1150S䞛⫼њ“󰧢⊓䇗󰠊”󱡔󱴃DŽ󱅗Ӏ󰴛Ў8㛮󱇕㺙ˈ󰳼ㅵ㛮󱅮НϞ䛑󱵕ЎⳌԐˈ󱴀㡖󱇚ㅔ󰤩ҟ㒡ϸ⾡㢃⠛ⱘ󰦖󱭄󰦞󰧘㞾ⱘ⡍⚍DŽ

3.2.2.1 “󰠡⊓䇗󰠊”󰵟󰤩󰨼󱳳󱥻󰠊PFC㢃⠛——ICE1PCS01

ICE1PCS01󱰃ϔ⾡󱑇󰴛⬉⌕῵󱓣󱥻󰠊ⱘ󰤩󰨼󱳳PFC㢃⠛DŽ󱅗䞛⫼8㛮󱇕㺙ˈ↨Ӵ㒳ⱘ󰷎ѢЬ⊩󰰼ⱘ󱑇󰴛⬉⌕῵󱓣㢃⠛㽕ㅔ󰤩󱕜󰻮ˈ㗠Ϩ󱮴䳔䕧󰜹⬉󰥟ⱘ䞛ḋˈ䴲󱐌䗖󰧜󱮴ḹBoost PFC󱢧󱠥Փ⫼DŽҹϟЎICE1PCS01ⱘϔѯЏ㽕⡍󱗻:zzzzzzzz

85̚265V󱆑㣗󰳈㒓⬉󰥟䕧󰜹

󱑇󰴛⬉⌕῵󱓣󱥻󰠊ˈ䰡Ԣ⬉󱛳⬉⌕㒍⊶󰦞EMI

䗮䖛䇗㡖󰻪㕂乥⥛䆒󱅮⬉䰏ˈ󱎹԰乥⥛󰧃ҹ䆒󱅮󰳼50kHz-250kHz󱵕󱇥ⱘ󰻪䚼󰜗ӊ󰥇󰧃󱅲⦄󰡳⥛󰲴󱭄󱷵ℷ󰡳㛑󰤩󰨼⬉⌕󱋄󰘐䰤󰠊

䕧󰟎䖛󰥟ǃ⃴󰥟ǃ󱓔䏃󰖱󱡸ㄝ󰹲󱔎󱗻ⱘ󰡼󱗕󰪡󱑨

󰧃䰤󰠊󰨃󰡼⬉⌕ⱘ䕃󰨃󰡼󰡳㛑

21

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

ϟ䴶㸼㒭󰟎њ󱓩㛮ⱘ󰡳㛑䇈󱯢˖

㸼3-1 ICE1PCS01ⱘㅵ㛮󰡳㛑䇈󱯢Table 3-1 Pin configuration of ICE1PCS01

󱑣󰧋

󰧡⿄

󰡳㛑䇈󱯢㢃⠛󱥹󰴄⬉⌕⦃㸹󰙓⬉⌕Ẕ⌟󰖵󰧋䕧󰜹󱎹԰乥⥛䆒󱅮⬉󰥟⦃㸹󰙓

1 GND 2 ICOMP 3 ISNS 4 FRQ 5 VCOMP 6 VSNS 䕧󰟎⬉󰥟䞛ḋ󰖵󰧋䕧󰜹ッ

ICE1PCS01

7 VCC 8 GAT 㢃⠛կ⬉偅󰡼䕧󰟎

E

ICE1PCS01ⱘ󰝙䚼㒧󱵘󰩠󰳒3-7㒭󰟎ⱘ“󰠡⊓䇗󰠊”󱥻󰠊ⱘ󰥳⧚󰳒󰷎󱴀ϔ㟈ˈԚ

䆹㢃⠛г󱇍󰝊󱎹԰󱮍󱓣䖯㸠њϔѯ󰗂󱬍ҹ㦋󱕫󱳈󰽑ⱘ󱗻㛑ˈϟ䴶󱈅󱇍󰝊⡍⚍԰㸹EE󰜙䇈󱯢˖

LACE

DEERaQCoRbVoRsR1Current LoopOPCOMP+_+5VOTA_CicompFault󰳒3-9 ICE1PCS01⬉⌕⦃󰝙䚼㒧󱵘Fig.3-9 Current loop of ICE1PCS01

22

㄀ϝゴ󱮴ḹBoost PFC⬉䏃󱥻󰠊󱮍Ḝ䆒䅵

󰳒3-10 ICE1PCS01⬉⌕⦃ӓⳳ⊶󱔶DŽ

A1:⬉󱛳⬉⌕⊶󱔶ˈA2˖VIcompϢ䬃啓⊶ˈA3˖Isense㛮⬉⌕䞛ḋ⊶󱔶B1˖VIcompϢ䬃啓⊶㒚㡖⊶󱔶ˈB2˖Isense㛮⬉⌕䞛ḋ⊶󱔶㒚㡖

Fig.3-10 Simulation waveforms of ICE1PCS01’s current loop

A1: Inductor current; A2: VIcomp and sawtooth; A3: Waveform of Isense pin B1: Details of VIcomp and sawtooth; B2: Details of Isense pin waveform

󰳼3.2.1㡖Ё㒭󰟎ⱘ“󰠡⊓䇗󰠊”῵󱓣󰤩󰨼󱳳PFC󱥻󰠊󱮍󱓣Ёˈ⫼󱴹Ϣ䬃啓⊶↨䕗ⱘ⬉󱛳⬉⌕䞛ḋ󰖵󰧋󱰃󱏺󱳝㒍⊶ⱘ󱳾㒣䖛ӏԩ󰻘⧚ⱘẔ⌟󰖵󰧋DŽ㗠Ϩ⧚䆎Ϟ“󰠡⊓䇗󰠊”῵󱓣󱥻󰠊󰦾Փ⫼њ⬉󱛳⬉⌕ⱘϟ䰡⊓󱴹󱎹԰DŽԚ󱰃ICE1PCS01󱑊ϡ󱰃Ⳉ󱥹Փ⫼䖭⾡⬉󱛳⬉⌕䞛ḋ󰖵󰧋󱴹󱎹԰ⱘDŽ󰽖󰳒3-9󱠔⼎ˈ󰳼PFC⬉䏃Ё⬉⌕䞛ḋ㦋󱕫ⱘ󱰃Ϣ⬉󱛳⬉⌕󱟤↨՟ⱘ䋳⬉󰥟󰖵󰧋DŽ䆹⬉󰥟䕧󰜹ICE1PCS01ⱘISENSE㛮󰧢󱥹󰜹󰝙䚼䎼󱇐䖤󱬒OTAⱘℷ󰧥䕧󰜹ッˈ䎼󱇐䖤󱬒OTA󰩠ICOMP㛮󰻪󱥹ⱘ㸹󰙓⬉󱆍Cicomp󱵘󱟤⬉⌕⦃Ⓒ⊶⦃㡖ˈ󱇚䕧󰜹ISENSE㛮ⱘ󱏺󱳝㒍⊶ǃ󰦡󱯴⬉󱛳ⶀ󱯊⬉⌕ⱘ䋳⬉󰥟󰖵󰧋Ⓒ⊶ЎϔϾ󰦡󱯴⬉󱛳󱑇󰴛⬉⌕ⱘℷ󰧥⬉󰥟󰖵󰧋⊶󱔶ˈ䖭Ͼ㒣䖛󰻘⧚ⱘ⬉󱛳⬉⌕䞛ḋ󰖵󰧋󰝡ϢVm⿃󰟚󱔶󱟤ⱘ䬃啓⊶䖯㸠↨䕗󱴹⹂󱅮󱓔󰝇ㅵ󰤴ぎ↨DŽ

󰳒3-10ⱘӓⳳ⊶󱔶⏙Ἦ󰴄󰦡󱯴њϞ䗄󰟚󱵤䖛⿟DŽICE1PCS01㢃⠛䗮䖛䎼󱇐䖤󱬒OTA󰩠󰻪󱥹ⱘCicomp󱇚VIsense˄A3˅⊶󱔶󰻘⧚󰧢󱇚󱕫󰠄󰳒3-10ЁⱘVicomp⊶󱔶ˈ䆹⊶󱔶󰦡󱯴ⱘ󱰃⬉󱛳󱑇󰴛⬉⌕󰖵󰧋ˈ󱠔ҹICE1PCS01󱰃󱑇󰴛⬉⌕󱥻󰠊῵󱓣󱥻󰠊ⱘ

PFC㢃⠛DŽ㱑✊󱅗Փ⫼ⱘ󱰃“󰠡⊓䇗󰠊”῵󱓣󱥻󰠊ˈԚ󱰃䳔㽕䞛ḋ󱅠󱭈ⱘ⬉󱛳⬉⌕󰖵󰧋DŽ

PFC⬉䏃䕧󰟎⬉󰥟ⱘ󰡼󱗕󰪡󱑨󱗻㛑󰲴PFC⬉䏃󰳎󱳝ⱘ⬉󰥟⦃󱏺󱆑䕗じⱘ⡍󱗻ˈ

䕗󱏂ˈICE1PCS01Փ⫼њϔ⾡󰹲󱔎󰵟ⱘ⬉󰥟⦃󰦡作ҹ󱬍󰭘󰝊󰡼󱗕󰪡󱑨DŽ䖭Ͼ󰡳㛑󱰃䗮䖛ⲥ⌟VSENSE㛮ⱘ⬉󰥟󱴹󱅲⦄ⱘˈ󱔧VSENSE㛮⬉󰥟ⱘ󰦬󰣪󱐙󱑺䍙䖛±5%,⬉󰥟⦃󱇚䏇䖛󰪡󱑨㓧󱜶ⱘVCOMP㛮⬉󰥟ˈⳈ󱥹䗮䖛䴲㒓󱗻󰹲Ⲟ῵󰴫˄Nonlinear

Gain˅󱥻󰠊󰤴ぎ↨ˈՓ󱕫䕧󰟎⬉󰥟󱖿䗳󱘶󰻡󰠄䆒󱅮󰘐DŽ䴲㒓󱗻󰹲Ⲟ󱰃ϔ㒘䆒󱅮ⱘ󱐌䞣ˈ⫼󱴹󰳼85̚265V䕧󰜹⬉󰥟㣗󰳈󰝙䇗㡖⬉󰥟⦃ⱘ󰹲Ⲟ󰦞󰖱󱣕⦃䏃〇󱅮󱗻DŽ

23

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

3.2.2.2 “󰧢⊓䇗󰠊”󰵟󰤩󰨼󱳳PFC㢃⠛——IR1150S

㸼3-2 IR1150Sⱘㅵ㛮󰡳㛑䇈󱯢Table 3-2 Pin configuration of IR1150S

󱑣󰧋

󰧡⿄

󰡳㛑䇈󱯢㢃⠛󱥹󰴄󱎹԰乥⥛䆒󱅮⬉⌕Ẕ⌟󰖵󰧋䕧󰜹䖛󰥟󰖱󱡸/Փ㛑ッ⬉󰥟⦃㸹󰙓

1 COM 2 FRQ 3 ISNS 4 OVP/NA5 COMP 6 VFB 䕧󰟎⬉󰥟䞛ḋ󰖵󰧋䕧󰜹ッ7 VCC 8 GAT 㢃⠛կ⬉偅󰡼䕧󰟎

E

IR1150S󱰃IR󰝀󰧌2005󱑈󱥼󰟎ⱘ󰷎Ѣ“󰧢⊓䇗󰠊”῵󱓣ⱘ󰤩󰨼󱳳PFC󱥻󰠊㢃⠛DŽ

󱅗ⱘ󰥳⧚Ϣ3.2.1㡖ҟ㒡ⱘ“󰧢⊓䇗󰠊”῵󱓣󱥻󰠊󱅠󰜼ϔ㟈ˈ󱰃ϔ⾡󱮶󰧃ҹ䗮䖛Ẕ⌟⬉󱛳⬉⌕󰦜󰧃ҹ󰦾Ẕ⌟󱓔󰝇ㅵ⬉⌕󱴹󱅲⦄PFC󰡳㛑ⱘ󱋄󰘐⬉⌕῵󱓣󱥻󰠊ⱘ󰡳⥛󰲴󱭄󱷵ℷ㢃⠛ˈ󰳒3-11Ў󰷎ѢIR1150S㢃⠛ⱘҙ䞛ḋ󱓔󰝇ㅵ⬉⌕ⱘBoost PFC⬉䏃㒧󱵕ЎⳌԐDŽ⬅Ѣ󱅗Փ⫼њ“󰧢󱵘󰳒DŽҢ㸼3-2ⱘ󱓩㛮䜡㕂󰧃ⶹ䆹㢃⠛󰧠ICE1PCS01E⊓䇗󰠊”῵󱓣ⱘ󰤩󰨼󱳳󱥻󰠊󱮍⊩ˈ󰝊⬉⌕⦃ϢICE1PCS01Ⳍ↨䕗Ўㅔ󰤩DŽIR1150S󱮴乏⬉⌕⦃㸹󰙓ˈ󰧃Ⳉ󱥹Փ⫼ㅔ󰤩Ⓒ⊶󰧢ⱘ⬉󱛳⬉⌕䞛ḋ󰘐󱴹󱎹԰ˈ䆹㢃⠛䖬󱦤կњ󰤩⣀ⱘOVP㛮󱴹󱅲⦄䕧󰟎䖛󰥟󰖱󱡸ˈ󱑊Ϩ䗮䖛󱇚OVP㛮󱢝󱑩㟇0.62Vҹϟˈ㢃⠛󰧃ҹ䖯󰜹⬉⌕⍜㗫ҙЎ200uAⱘ“ӥ⳴῵󱓣”DŽ䖭󱇍Ѣ󱶤ѯ󰻻󰡳⥛⬉⑤󰳼䕏䕑󱯊󰗭䗮䖛󰝇䯁PFC㑻󱴹󰞣󱇣󱤳㗫󱰃䴲󱐌󱮍󰖓ⱘDŽ

E

󰳒3-11 IR1150S󰝌󰵟󱑨⫼⬉䏃Fig.3-11 Application circuit of IR1150S

24

㄀ϝゴ󱮴ḹBoost PFC⬉䏃󱥻󰠊󱮍Ḝ䆒䅵

IR1150SⳌ󱇍ѢICE1PCS01󰳼⬉⌕⦃Ϟⱘㅔ󰣪Փ󱕫ҙ䞛⫼󱓔󰝇ㅵ⬉⌕䖯㸠󱥻󰠊󱟤Ў󰧃㛑ˈ䖭Ͼ⡍⚍Փ󱕫󰷎ѢIR1150Sⱘ󱮴ḹBoost PFC⬉䏃⬉⌕䞛ḋ󱳈󰡴󱮍󰖓ˈ󰝋ԧ󱮍Ḝ󱇚󰳼3.3.2㡖Ё䆺䗄DŽԚ󱰃󱋄󰘐⬉⌕῵󱓣󱥻󰠊䰡Ԣњ⬉䏃ⱘ󱡫󰰾󰻄㛑󰡯DŽ

ISNS㛮󱖙乏󰻪󰡴RC󱵘󱟤ⱘԢ䗮Ⓒ⊶󰰼󱠡㛑󱳈󰽑ⱘ󱎹԰DŽ󱅲偠䖛⿟ЁˈIR1150S䖭⾡󱋄󰘐⬉⌕󱥻󰠊󰵟ⱘ㢃⠛󱇍󰰾󰻄ⱘ󱬣󱛳⿟󱑺г󱯢󱰒ⱘ↨ICE1PCS01䖭⾡󱑇󰴛⬉⌕󱥻󰠊῵󱓣ⱘ㢃⠛㽕催DŽ

3.3 󱮴ḹBoost PFC⬉䏃ⱘ⬉⌕Ẕ⌟󱮍Ḝ䆒䅵

3.3.1 Ё󱖗󱢑󰼈⬉⌕Ѧ󱛳󰰼㒘󰧜Ẕ⌟⊩

1TS2243

1

267

CoL11D1D273TS1

ACL225TS14361426753

TS1345

RsRo䞛ḋ󰖵󰧋Q1Q3Q212

TS2

124

TS234

偅󰡼⬉⌕Ѧ󱛳󰰼㒧󱵘󰳒

󰧠󰧡ッ⼎󱛣󰳒

(a) (b) (c) 󰳒3-12 Ё󱖗󱢑󰼈⬉⌕Ѧ󱛳󰰼㒘󰧜Ẕ⌟⊩

(a)䞛ḋ⬉䏃㒧󱵘󰳒˗˄b˅⬉⌕Ѧ󱛳󰰼㒧󱵘󰳒˗˄c˅⬉⌕Ѧ󱛳󰰼󰧠󰧡ッ⼎󱛣󰳒Fig.3-12 Current transform with center-tapped secondary in Bridgeless Boost PFC (a) Circuit diagram; (b) Current transforms structure; (c) Dotted terminal configuration

Փ⫼њ󰤩󰨼󱳳󱥻󰠊󱡔󱴃ⱘ󱮴ḹBoost PFC⬉䏃㱑✊󱮴乏䕧󰜹㒓⬉󰥟䞛ḋˈԚҡ䳔㽕㾷󰞇⬉󱛳⬉⌕䞛ḋⱘ䯂乬DŽ󰧜䗖ⱘ⬉⌕Ẕ⌟󱮍󱓣󱖙乏㛑󰻳󱦤կ󰞚⹂ⱘ󰖵󰧋㗠Ϩ䖬ϡ㛑󱓩󰜹䖛󰻻ⱘ󱤳㗫DŽ󰳼Ӵ㒳ⱘ󰻻󰡳⥛Boost PFC⬉䏃󱢧󱠥Ё䗮󱐌Փ⫼⬉⌕Ѧ󱛳󰰼㒘󰧜ⱘ󱮍󱓣䞛ḋ⬉󱛳⬉⌕ˈ󰽖󰳒3-1b󱠔⼎DŽԚ󰳼󱮴ḹBoost PFC⬉䏃Ё󱓔󰝇ㅵ󱰃󰳼󱓔󰝇⢊󱗕󰩠㓁⌕⢊󱗕П䯈󰟛󱤶ⱘˈ㽕Փ⫼⬉⌕Ѧ󱛳󰰼䞛ḋ󱓔󰝇ㅵ⬉󰥟󱈅䳔㽕󰘮ϔ󱅮ⱘ󱬍䖯DŽՓ⫼3.1㡖ЁST󰝀󰧌󱦤󰟎ⱘЁ󱖗󱢑󰼈⬉⌕Ѧ󱛳󰰼󱮍⊩󰥇󰧃㾷󰞇Ẕ⌟󱮴ḹBoost PFC⬉䏃ⱘ󱓔󰝇ㅵ⬉⌕ⱘ䲒乬DŽ

󰽖󰳒3-12a󱠔⼎ˈ󰳼󱮴ḹBoost PFCЁՓ⫼ϸϾ⬉⌕Ѧ󱛳󰰼TS1󰩠TS2󱴹󰟚󰟿Ẕ⌟󱓔󰝇ㅵ⬉⌕󰩠Ѡ󱵕ㅵ⬉⌕DŽϸ㗙󰖵󰧋󰧜󱑊󰧢󰳼RsẔ⌟⬉䰏Ϟⱘ⬉󰥟󰥇Ў󰦡󱯴󰜼⬉󱛳⬉⌕⊶󱔶ⱘẔ⌟󰘐DŽẔ⌟󱓔󰝇ㅵ⬉⌕ⱘѦ󱛳󰰼TS1ⱘϸϾ󰥳䖍㒩㒘󰴛

25

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

Ў1󰣱DŽϔϾ󰥳䖍㒩㒘І㘨󰳼Ѡ󱵕ㅵD1Ϟˈ󰦺ϔϾІ㘨󰳼󱓔󰝇ㅵQ2ϞDŽTS1ⱘ󰡃䖍㒩㒘Ўϔ⾡󱏺󱳝Ё󱖗󱢑󰼈ⱘ㒧󱵘ˈ󰟚󰡆󰟎ⱘϸϾ󰡃䖍㒩㒘󰴛Ў50󰣱DŽTS1ⱘ㒧󱵘󰳒󰩠󰧠󰧡ッ⼎󱛣󰳒󰟚󰟿󰦖㗗󰳒3-12b󰩠3-12cDŽ

㸼3-3 䕧󰜹㒓⬉󰥟ℷ󰤞󰨼󱳳󱯊⬉⌕Ѧ󱛳󰰼󱎹԰⢊󱗕

Table 3-3 Operation state of current transform during positive half line cycle

VL>VNTS1aLL1TS1bD1D2I-TS1a I-TS1b I-TS1 TS2IIIITS1NL2RsCoVRsQ1Q3Q2VRs-TS1 VRs-TS2 VRs VVDRIVE⊼˖⬉⌕󱮍󰧥ҹ󰧠󰧡ッ⌕󰜹Ўℷ㸼3-4 䕧󰜹㒓⬉󰥟䋳󰤞󰨼󱳳󱯊⬉⌕Ѧ󱛳󰰼󱎹԰⢊󱗕

Table 3-4 Operation state of current transform during negative half line cycle

VL26

㄀ϝゴ󱮴ḹBoost PFC⬉䏃󱥻󰠊󱮍Ḝ䆒䅵

󱷣㸼⼎䆹⬉⌕Ѧ󱛳󰰼󰡃䖍㒩㒘ⱘ⬉⌕󰳼Ẕ⌟⬉䰏RsϞѻ⫳ⱘ⬉󰥟⊶󱔶DŽ⬅󰟚󱵤󰧃ⶹˈ󰳼䕧󰜹⬉󰥟ℷ󰤞󰨼󱳳󱯊ˈTS1Ѧ󱛳󰰼󰥳䖍󰦾󱳝TS1b㒩㒘󱎹԰ˈⳈ󱥹Ẕ⌟󱓔󰝇ㅵ⬉⌕DŽ㗠󰳼䕧󰜹⬉󰥟䋳󰤞󰨼󱳳󱯊ˈTS1Ѧ󱛳󰰼ⱘϸϾ󰥳䖍㒩㒘䛑󱳝⬉⌕䗮䖛DŽ󱓔󰝇ㅵ󱓔䗮󱯊󱳳ˈ󱓔󰝇ㅵ⬉⌕㹿㒩㒘TS1b䞛ḋDŽ󱓔󰝇ㅵ󰝇󱮁󱯊󱳳ˈ䕙󰡽󱓔󰝇ㅵQ3г󰝇󱮁ˈ㒩㒘TS1a󰩠TS1bЁ⬉⌕󰳼⺕㢃Ёѻ⫳ⱘ⺕䗮ⳌѦ󱢉⍜ˈ󱮴󰖵󰧋䕧󰟎DŽՓ⫼њ䖭⾡󱏺󱳝Ё󱖗󱢑󰼈ⱘ⬉⌕Ѧ󱛳󰰼㾷󰞇њ󱮴ḹBoost PFC⬉⌕䞛ḋⱘ䯂乬ˈ䳔㽕⊼󱛣ⱘ󱰃Ẕ⌟󱓔󰝇ㅵ⬉⌕ⱘ⬉⌕Ѧ󱛳󰰼󰡃䖍Ё󱖗󱢑󰼈󰟚󰡆ⱘϸϾ㒓󰳜󰣱󱭄󱖙乏ϔ㟈ˈ󰧺󰟭Ӯ󱕅󰪡󰠄󱥻󰠊󱬜󱵰DŽ

3.3.2 󱓔󰝇ㅵ󱋄󰘐⬉⌕Ẕ⌟⊩

Ϟ㡖󰟚󱵤ⱘ⬉󱛳⬉⌕Ẕ⌟󱮍⊩Ẕ⌟ⱘ󱰃󱭈Ͼ⬉󱛳⬉⌕ⱘ󰖵󰧋ˈ󰻻󰻮󱭄PFC󱥻󰠊㢃⠛䛑䳔㽕󱅠󱭈ⱘ⬉󱛳⬉⌕󰖵󰧋䖯㸠󱥻󰠊DŽḍ󱥂3.2.1㡖ⱘ󰟚󱵤󰧃ⶹˈ󰷎Ѣ“󰧢⊓䇗󰠊”󰵟ⱘ󰤩󰨼󱳳PFC㢃⠛IR1150S󱰃ϔ⾡󱋄󰘐⬉⌕῵󱓣󱥻󰠊ⱘ󰤩󰨼󱳳PFC㢃⠛ˈ󱅗󰦾䳔⬉󱛳⬉⌕ⱘ󱋄󰘐Ẕ⌟󰖵󰧋󰥇󰧃󱎹԰DŽ㢹Փ⫼3.3.1㡖Ёҟ㒡ⱘЁ󱖗󱢑󰼈⬉⌕Ѧ󱛳󰰼Ẕ⌟⊩󱯊ҙ䳔㽕󱓔󰝇ㅵ⬉⌕䞛ḋ󰖵󰧋󰥇󰧃ˈ󱠔ҹ⬉⌕Ѧ󱛳󰰼TS2󰧃ҹⳕ󰦏ˈ⬉⌕Ẕ⌟󱮍󱓣󱳈󰡴ㅔ󰤩DŽ󱴀㡖󱇚ҟ㒡󰦺󰻪ϔ⾡⬉⌕Ẕ⌟󱮍⊩ˈ䖭⾡Ẕ⌟󱮍⊩󰧃ҹ󱮍󰖓ⱘ㦋󱕫󱓔󰝇ㅵ⬉⌕󱋄󰘐󰖵󰧋ˈ󰥇⬉󱛳⬉⌕󱋄󰘐󰖵󰧋󱴹㒭IR1150SՓ⫼ˈẔ⌟⬉䏃󰽖󰳒3-13󱠔⼎DŽ

L1D1D2L2T1aT1Ds1RsDs2T2CoT2aQ1T1bT2bQ2DRIVE󰳒3-13 Փ⫼⬉⌕Ѧ󱛳󰰼Ẕ⌟󱓔󰝇ㅵ󱋄󰘐⬉⌕

Fig.3-13 Peak switch current sensing using current transformers

󰳒3-13󱠔⼎Ẕ⌟󱮍󱓣ⱘⳂⱘ󱰃㽕󱇚ϸϾ󱓔󰝇ㅵ󱎹԰󰳼Boost⢊󱗕ⱘ⬉⌕Ẕ⌟󰟎󱴹󱑊󰧜󱑊󰠄RsẔ⌟⬉䰏ϞDŽ󰳒3-14㒭󰟎њ󰷎Ѣ䖭⾡䞛ḋ󱮍󱓣󰩠IR1150S󱥻󰠊㢃⠛ⱘ󱮴ḹBoost PFCⱘ⊶󱔶DŽ󰳒Ё⊶󱔶1ЎẔ⌟⬉䰏RsϞⱘ⬉󰥟󰖵󰧋ˈ⊶󱔶2Ў⬉󱛳⬉⌕󰖵󰧋DŽԚ󱰃䳔㽕⊼󱛣ⱘ󱰃RsẔ⌟⬉䰏Ϟⱘ⬉󰥟󱑊䴲󱓔󰝇ㅵ⬉⌕⊶󱔶ˈ

27

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

󰲴Ў󱔧Q1󱎹԰󰳼Boost⢊󱗕󱯊ˈT1Ẕ⌟ⱘ󱰃Q1󱓔󰝇ㅵ⬉⌕⊶󱔶DŽԚϢℸ󰧠󱯊ˈḍ󱥂⬉⌕Ѧ󱛳󰰼ⱘ󱎹԰󰥳⧚ˈ㓁⌕󱓔󰝇ㅵQ2ⱘ⬉⌕гӮ䗮䖛T2䚼󰟚㗺󰧜󰠄RsẔ⌟⬉䰏ϞDŽ󱑊䴲㹿Ѡ󱵕ㅵDs2䰏󱣵DŽ

󰳒3-14󰷎Ѣ󱓔󰝇ㅵ󱋄󰘐⬉⌕Ẕ⌟ⱘ󱮴ḹBoost PFC⬉䏃󱅲偠⊶󱔶⊶󱔶1˖RsẔ⌟⬉䰏Ϟⱘ⬉󰥟󰖵󰧋˗⊶󱔶2˖⬉󱛳⬉⌕⊶󱔶˗

Fig.3-14 Bridgeless Boost PFC waveforms based on peak switch current sensing method

1: Voltage signal across sensing resistor Rs; 2: Inductor current waveform;

(a) (b)

󰳒3-15⬉⌕Ѧ󱛳󰰼Ẕ⌟󱓔󰝇ㅵ󱋄󰘐⬉⌕ⱘ㒚㡖⊶󱔶˄ℸ󱯊Q1󱎹԰󰳼Boost⢊󱗕ˈQ2󱎹԰󰳼㓁⌕⢊󱗕˅

(a)󰳒Ё˖⊶󱔶1Ў䞛ḋ⬉䰏RsϞ⬉󰥟⊶󱔶˗⊶󱔶2ЎT1b㒩㒘⬉⌕⊶󱔶DŽ(b)󰳒Ё˖⊶󱔶1Ў䞛ḋ⬉䰏RsϞ⬉󰥟⊶󱔶˗⊶󱔶2ЎT2b㒩㒘⬉⌕⊶󱔶DŽ

Fig.3-15 Detail waveforms (Q1 in boost stage, Q2 in freewheeling stage)

(a): Waveform 1 is voltage across current sensing resistor Rs, waveform 2 is the current in T1b. (b): Waveform 1 is voltage across current sensing resistor Rs, waveform 2 is the current in T2b.

Ўњ䆺㒚󰟚󱵤Ẕ⌟䖛⿟ˈ󱅲偠Ё󰟚󰟿⌟䞣њT1b󰩠T2b㒓󰳜ⱘ⬉⌕DŽ⊶󱔶󰽖󰳒3-15󱠔⼎ˈℸ󱯊Q1󱎹԰󰳼Boost⢊󱗕ˈQ2󱎹԰󰳼㓁⌕⢊󱗕DŽ⬅󰳒3-15aЁ⊶

28

㄀ϝゴ󱮴ḹBoost PFC⬉䏃󱥻󰠊󱮍Ḝ䆒䅵

󱔶2󰧃ҹⳟ󰟎ˈ⬉⌕Ѧ󱛳󰰼T1󰡃䖍T1bẔ⌟ⱘ󱰃󱓔󰝇ㅵQ1ⱘ⬉⌕⊶󱔶DŽ㗠󰻘Ѣ㓁⌕⢊󱗕ⱘQ2󱓔󰝇ㅵ⬉⌕⊶󱔶г㒣䖛T2㗺󰧜󰠄њ󰡃䖍ˈ⬉⌕󰽖󰳒3-15bⱘ⊶󱔶

2󱠔⼎DŽ󱠔ҹRsϞⱘ󱅠󱭈ⱘ⬉⌕󰥇Ў⊶󱔶3-15aЁ⊶󱔶2Ϣ3-15bЁⱘ⊶󱔶2ⱘ󰦴󰡴DŽ󱳔㒜ⱘ㒧󱵰Ў󰳒3-15a󰩠󰳒3-15b⊶󱔶1󱠔⼎DŽ⬅ѢIR1150SՓ⫼ⱘ󱰃󰷎Ѣ“󰧢⊓䇗󰠊”󰤩󰨼󱳳󱡔󱴃ⱘ󱋄󰘐⬉⌕󱥻󰠊󱮍⊩ˈ󱠔ҹ󱈑ㅵ䖭⾡Ẕ⌟⬉⌕ⱘ󱮍⊩㦋󱕫ⱘ󱑊䴲㒃ℷⱘ󱓔󰝇ㅵ⬉⌕ˈԚ󱰃Ẕ⌟󰟎њ󱓔󰝇ㅵⱘ󱋄󰘐⬉⌕󰻻󱇣ˈձ✊󰧃ҹկ㒭IR1150S㢃⠛Փ⫼DŽ

󰳼󱅲䰙Փ⫼Ёˈ䖬󰧃ҹ󱇍䖭⾡Ẕ⌟󱮍󱓣䖯㸠󱬍䖯ҹ󰞣󱇣㓁⌕MOSFETⱘ⬉⌕㗺󰧜䖯Ѧ󱛳󰰼㗠󱓩䍋ⱘ䞛ḋ䇃󱏂DŽ󱬍䖯󰧢ⱘѦ󱛳󰰼㒧󱵘󰽖󰳒3-16󱠔⼎ˈ󰳼Ѧ󱛳󰰼󰡃䖍⏏󰡴⺕㢃󰻡ԡⱘ䏃󱕘ˈ󱇚㓁⌕󱓔󰝇ㅵⱘ⬉⌕󱕅󰪡䰡Ԣ󰠄󱳔󱇣DŽ󱬍䖯󰧢ⱘ⬉䏃ӓⳳ㒧󱵰󰽖󰳒3-17󱠔⼎DŽℸ󱯊T1Ẕ⌟ⱘ󱰃󱎹԰󰳼Boost⢊󱗕ⱘ󱓔󰝇ㅵП⬉⌕ˈ

T2㗺󰧜њ󰻘Ѣ㓁⌕⢊󱗕ⱘ󱓔󰝇ㅵП⬉⌕DŽ⬅󰳒3-17ЁѠ󱵕ㅵDS2Ёⱘ⬉⌕⊶󱔶󰧃㾕㗺󰧜󰟎󱴹ⱘ⬉⌕󱏆㒣󱯢󱰒󰞣󱇥ˈϢDS1Ё⬉⌕󰦴󰡴󰧢󱕫󰠄ⱘ䞛ḋ⬉䰏RsϞⱘ⬉󰥟ⱘ󱋄󰘐󰧃ҹⳌ󱔧ℷ⹂ⱘ󰦡󱯴󱓔󰝇ㅵⱘ󱋄󰘐⬉⌕󱐙󰘐њDŽ

T1Ds1Ds2T2R1RsD1T1aT1bR2D2T2aT2b󰳒3-16 󱬍䖯ⱘ󱓔󰝇ㅵ󱋄󰘐⬉⌕Ẕ⌟⊩

Fig.3-16 Improved peak switch current sensing method

󰳒3-17 󱬍䖯ⱘ󱓔󰝇ㅵ󱋄󰘐⬉⌕Ẕ⌟⊩ⱘ⊶󱔶

⊶󱔶1:Ѡ󱵕ㅵDS1ⱘ⬉⌕˗⊶󱔶2:Ѡ󱵕ㅵDS2ⱘ⬉⌕˗⊶󱔶3:䞛ḋ⬉䰏RsϞⱘ⬉󰥟

Fig.3-17 Waveforms of improved peak switch current method

Waveform1: Current in DS1; Waveform 2: Current in DS2; Waveform3: Voltage across Rs

29

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

Ⳍ󱇍ѢՓ⫼ⱘЁ󱖗󱢑󰼈⬉⌕Ѧ󱛳󰰼䞛ḋ󱮍⊩󱴹䇈䖭⾡󱓔󰝇ㅵ󱋄󰘐⬉⌕Ẕ⌟⊩㒧󱵘󱳈ㅔ󰤩ˈ󱮴䳔Փ⫼䕙󰡽󱓔󰝇ㅵQ3DŽ䜡󰧜󱋄󰘐⬉⌕῵󱓣ⱘ󰤩󰨼󱳳PFC㢃⠛

IR1150Sг㛑㦋󱕫㡃󰽑ⱘ󱥻󰠊󱬜󱵰DŽ

30

㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞󱅲偠㒧󱵰

㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞

󱅲偠㒧󱵰

󱮴ḹBoost PFC⬉䏃ⱘЏ⬉䏃󰦞󱥻󰠊⬉䏃ⱘ䆒䅵󰥳󰟭Ϣ󱱂䗮Boost PFC⬉䏃󰡳㛑󰦞⬉䏃㒧󱵘ㄝ󱮍䴶󰷎󱴀Ⳍ󰧠ˈⳌԐDŽ⬅ѢICE1PCS01ϢIR1150S󰳼㢃⠛󰥳⧚ǃ󱴀ゴҙҹ󰷎ѢICE1PCS01㢃⠛ⱘ󱮴ḹBoost PFC䆒䅵Ў՟㒭󰟎䆺㒚ⱘ䆒䅵⌕⿟󰦞󱅲偠㒧󱵰DŽ󱴀ゴ䖬䗮䖛󱅲偠󱇍󱮴ḹBoost PFC⬉䏃ϢӴ㒳Boost PFC⬉䏃󰳼PF󰘐ǃ󱬜⥛ㄝ󱮍䴶󰘮󰟎њ↨䕗DŽ

4.1 󰷎ѢICE1PCS01ⱘPFC⬉䏃󱥻󰠊⦃䏃󰟚󱵤

󰳼⦃䏃󰟚󱵤П󰠡佪󰜜㒭󰟎󰽖󰳒4-1󱠔⼎ⱘ⬉䏃㒧󱵘󰡳㛑῵󰴫ㅔ󰳒,⬅Ѣ󱮴ḹ

Boost PFC⬉䏃󰳼⦃䏃󱥻󰠊Ϟ󰩠Ӵ㒳Boost PFC󱅠󰜼ϔ㟈ˈҹϟ䆎䗄Ё䚼󰟚⦃㡖Ⳉ󱥹Փ⫼Ӵ㒳Boost󰡳⥛㑻䖯㸠󰟚󱵤DŽ

󰳒4-1 󰷎ѢICE1PCS01ⱘPFC⬉䏃󰡳㛑῵󰴫󰳒

Fig.4-1 Function block diagrams of PFC circuit based on ICE1PCS01

31

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

󰷎ѢICE1PCS01㢃⠛ⱘPFC󰦬󱤶󰰼󰣙󰧿󱳝󰻪䚼ⱘ⬉󰥟⦃󰩠󰝙䚼ⱘ⬉⌕⦃ϸϾ⦃䏃ˈ⬉󰥟⦃ЁPFC䕧󰟎⬉󰥟Vout㒣䖛󰟚󰥟⬉䰏⦃㡖󱕫󰠄VsenseˈVsense䕧󰟎󰠄⬉󰥟䇃󱏂󱬒󰻻󰰼󰦡Ⳍ䕧󰜹ッˈ䇃󱏂󱬒󰻻󰰼䕧󰟎Ў󱥻󰠊⬉󰥟Vcompˈ䆹⬉󰥟󰩠M2ǃKFQϸϾ󱐌󱭄ϔ䍋󱥻󰠊䬃啓⊶ⱘ⊶󱔶󰦖󱭄DŽ⬉⌕⦃Ё⬉󱛳⬉⌕Iave䗮䖛Ẕ⌟⬉䰏Rsense㦋󱕫ⱘ󰖵󰧋㒣䖛䎼󱇐䖤ㅫ󱬒󰻻󰰼OTA2󰩠󰻪󱥹⬉⌕⦃㸹󰙓⬉󱆍CcompⒸ⊶󰧢㦋󱕫Vicomp󰖵󰧋ˈ䆹󰖵󰧋Ϣ䬃啓⊶SAWTOOTH↨䕗󰧢󱕫󰠄PWM⊶Ϟ󰤛⊓㾺󰦥󰖵󰧋DŽП󰧢㒣䖛PWM䘏䕥⦃㡖󱕫󰠄󱥻󰠊󱓔󰝇ㅵⱘ󰤴ぎ↨󱴹󱇍BOOST󰡳⥛⦃㡖󱥻󰠊ˈҹ䖒󰠄󱥻󰠊⬉󱛳⬉⌕Iave󰩠䕧󰟎⬉󰥟VoutⱘⳂⱘDŽ

ˆdˆaveiˆoutvˆcompvˆicompvˆsensevˆref 0v󰳒4-2 󰷎ѢICE1PCS01ⱘPFC⬉䏃󱇣󰖵󰧋Ḛ󰳒

Fig.4-2 Small signal blocks of PFC circuit based on ICE1PCS01

󰳒4-2Ў󰷎ѢICE1PCSO1ⱘPFC⬉䏃ⱘ󱇣󰖵󰧋Ḛ󰳒ˈϟ䴶󱇍󰝊↣Ͼ⦃㡖䖯㸠󰟚󱵤˖

1ǃ󰟚󰥟㔥㒰Hv󰀋s󰀌VoutRaVsense

Rb󰳒4-3 䕧󰟎⬉󰥟󰦡作󰟚󰥟⬉䰏Fig.4-3 Voltage divide resistors

32

㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞󱅲偠㒧󱵰

󰽖󰳒4-3󱠔⼎PFC䕧󰟎⬉󰥟Vout⬅󰟚󰥟⬉䰏RaǃRb󰟚󰥟󰧢󱥹󰜹ICE1PCS01⬉󰥟󰦡作䇃󱏂󱬒󰻻󰰼󰦡󰧥䕧󰜹ッDŽ⬉󰥟󰦡作䇃󱏂󱬒󰻻󰰼ℷ󰧥䕧󰜹ッЎⳈ⌕+5VDŽ󰟭󱳝˖

Hv󰀋s󰀌

2ǃ⬉󰥟⦃䇃󱏂󱬒󰻻󰰼Gv󰀋s󰀌ˆsensevRb

(4.1) ˆvoutRa󰀎Rb

󰳒4-4 䎼󱇐䖤󱬒󰦞㸹󰙓㔥㒰Fig.4-4 OTA1 and compensation network

䇃󱏂󱬒󰻻󰰼⦃㡖󱰃⬅䎼󱇐䖤󱬒OTA1Ϣ㸹󰙓䰏󱆍㔥㒰󱵘󱟤ˈ㸹󰙓䰏󱆍㔥㒰䆒䅵Ў䳊󱵕⚍㸹󰙓DŽḍ󱥂䎼󱇐䖤󱬒ⱘ䕧󰜹⬉󰥟Ϣ䕧󰟎⬉⌕ⱘ䅵ㅫ󰥳󰟭󱳝˖

ˆcompv

Gv(s) ˆsensev

󰣪ㅔ󰧃󱕫˖

1󰀎sR3CZ

ugOTA1 (4.2)

ªºRCC

󰀋CZ󰀎CP󰀌s«1󰀎s3ZP»

CZ󰀎CP¼¬

gOTA1(1󰀎s)2SfCZ

(4.3) Gv(s)

s󰀋CZ󰀎CP󰀌s(1󰀎2Sf)

CPfCZ

11

ǃfCP

RCC2SR3CZ

2S3ZP

CZ󰀎CP

󱓣ЁgOTA1ЎOTA1ⱘ䎼󱇐󰦖󱭄ˈ󰝌󰵟󰘐Ў42PSDŽ

3ǃ⬉⌕⦃㸹󰙓⦃㡖Gc󰀋s󰀌⬉⌕⦃㸹󰙓⦃㡖Gc󰀋s󰀌󰣙󱣀њ⫼ѢẔ⌟⬉󱛳⬉⌕ⱘẔ⌟⬉䰏Rsenseǃ⬉⌕⦃䎼󱇐䖤󱬒OTA2󰩠󰻪䚼ⱘ㸹󰙓⬉󱆍CicompDŽḍ󱥂㢃⠛󰝙䚼㒧󱵘󱳝˖

Gc󰀋s󰀌

ˆicompK1uRsensev

ˆM1iave

˄4.4˅

DŽ󱓣ЁK1 7Ў㢃⠛󰝙䚼󱐌󱭄ǃM1Ў䴲㒓󱗻󱐌󱭄ˈ󱳔󰻻󰘐Ў0.9˄㾕󰳒4-6˅

33

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

4ǃPWM󰦞Boost󰡳⥛⦃㡖

ḍ󱥂3.2.1㡖󰤩󰨼󱳳󱥻󰠊ⱘ󰥳⧚󰧃ⶹICE1PCS01ⱘ⬉⌕⦃󱰃󰝙⦃󰣙󰧿󰳼󰻪䚼⬉󰥟⦃П󰝙ˈЎњㅔ󰣪⦃䏃󰟚󱵤󱇚⬉⌕⦃ⳟ󱟤ϔϾ󱭈ԧˈ󱑊󱅮Н˖

GF󰀋s󰀌

ˆoutvˆcompv

󰳒4-5 㢃⠛󰝙䚼VicompϢϝ㾦⊶ӓⳳ󰳒

SAWTOOTH Fig.4-5 Simulation waveforms of Vicomp and

佪󰜜㗗󱆳󰝇󱮁󰤴ぎ↨doffǃiave󰩠vcompП󰠡ⱘ󰝇㋏ˈ󰳒4-5㒭󰟎њICE1PCS01㢃⠛󰝙䚼ⱘPWM↨䕗󰰼ӓⳳ⊶󱔶󰳒DŽ⬅󰳒󰧃ⶹ󰝇󱮁󰤴ぎ↨⬅Vicomp󰩠䬃啓⊶↨䕗㦋󱕫ˈ󱅗Ӏⱘ󰝇㋏󱰃˖

doff

㢃⠛󱅮НvTOP KFQuM2󱑊󱳝vicomp

ToffT

vicompvTOP

˄4.5˅

K1uRsenseuiave

ˈҷ󰜹Ϟ󱓣󱕫˖

M1

K1uRsenseuiaveM1uM2uKFQ

doff

˄4.6˅

M1uM2Ў䴲㒓󱗻󱐌󱭄ˈ䆹󱐌󱭄Ϣ䇃󱏂󱬒󰻻󰰼䕧󰟎ⱘ󱥻󰠊⬉󰥟vcomp󱟤↨՟ˈ㢃⠛󱅮НM1uM2 K2uvcompˈ󱑊㒭󰟎њ󰳒4-6⫼Ѣ⹂󱅮M1uM2ϢvcompП䯈ⱘ󰝇㋏DŽ

34

㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞󱅲偠㒧󱵰

󰳒4-6 䴲㒓󱗻󰹲Ⲟ󱐌󱭄󰳒

Fig.4-6 Characteristic of Nonlinear block

󱇚M1uM2 K2uvcompҷ󰜹󱓣˄4.6˅󰧃󱕫˖

KuKFQiave

2uvcompdoffK1uRsense

󰰼䕧󰟎ⱘ󱥻󰠊⬉󰥟vcomp󰩠ⶀ󱯊󰝇󱮁󰤴ぎ↨doffП䯈ⱘ󰝇㋏DŽ

˄4.7˅

Ϟ󱓣󰥇Ў󰷎ѢICE1PCS01󱥻󰠊ⱘPFC⬉䏃Ё⬉󱛳⬉⌕󱑇󰴛󰘐iaveǃ䇃󱏂󱬒󰻻

PFC⬉䏃ⱘ䋳䕑ϔ㠀ЎDC/DC󰦬󱤶󰰼ˈ䋳䕑㉏󰵟Ў󱘦󰡳⥛䋳䕑DŽ⬅󰡳⥛󱑇㸵㾖⚍󱴹ⳟˈ󰘛䆒󱬜⥛Ў100%ˈPFC⬉䏃ⱘ䕧󰜹󰩠䕧󰟎󰡳⥛󱰃ϔ㟈ⱘDŽ󰟭⬅䕧󰜹⬉⌕󰩠䕧󰜹⬉󰥟󰧃󱕫䕧󰜹󰡳⥛Ў˖

Pin iinrmsuvinrms

iave_PK2uvinrms2

iaveuvinrms voutudoff󱇚󱓣˄4.7˅ҷ󰜹Ϟ󱓣󰧢䕧󰜹󰡳⥛󰧃㸼⼎Ў˖

2

K󰂘Kvinrms

Pin 󰂘2FQ󰂘vcomp

voutK1󰂘Rsense

䕧󰟎󰡳⥛󰧃㸼⼎Ў˖

Pout Pload󰀎voutuic

󱓣ЁicЎPFC䕧󰟎⬉󱆍󰜙󱬒⬉⬉⌕DŽ⬅䕧󰜹󰡳⥛ㄝѢ䕧󰟎󰡳⥛󰧃󱕫˖

2

K󰂘Kvinrms

󰂘2FQ󰂘vcomp Pload󰀎vout󰂘ic (4.8) voutK1󰂘Rsense

󱇍Ϟ󱓣Ё󰦬䞣㗗㰥󱇣󰖵󰧋󱡄󰡼˖

ˆout­vout Vout󰀎v

°vˆinrms°inrms Vinrms󰀎v®vˆ°comp Vcomp󰀎vcomp°i I󰀎iˆc

c¯c

ˆcⱘ󱇣󰖵󰧋󰝇㋏ˈ䆒䕧󰜹㒓⬉󰥟vinrms󰩠䕧󰟎⬉󰥟voutⱘ󱡄󰡼ЎˆcompϢiЎњⷨおv

䳊󱕫˖

2

K󰂘KVinrms

ˆcˆcomp󰀌 Pload󰀎Vout󰂘Ic󰀎i󰂘2FQ󰂘󰀋Vcomp󰀎v

VoutK1󰂘Rsense

󰀋󰀌2

K󰂘KVinrms

ˆc˄䕧󰟎⬉󱆍󱑇󰴛⬉⌕Ic 0˅ˆcomp Voutui󰂟󰂘2FQ󰂘v

VoutK1󰂘Rsense

󰥇˖

35

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

ˆciˆcompv

2

K2󰂘KFQVinrms

2󰂘 (4.9) VoutK1󰂘Rsense

󰦜󰲴䕧󰟎⬉󱆍Coⱘ⬉󰥟󰩠⬉⌕󱳝ҹϟ󰝇㋏˖

ˆoutv1 (4.10) ˆs󰂘Coic

󰧜󱑊󱓣˄4.9˅󰩠󱓣˄4.10˅󰧃󱕫

2

K2󰂘KFQˆoutVinrmsv1

GF󰀋s󰀌 2󰂘󰂘 (4.11)

v

ˆaveVoutK1󰂘Rsenses󰂘Co5ǃӴ䗦󰟑󱭄󱘏㒧

㓐󰧜Ϟ䗄󰟚󱵤Ϣ䅵ㅫˈ󱥻󰠊䕧󰟎󰠄󰦡作䕧󰜹Ӵ䗦󰟑󱭄Ў˖

G(s) GvˆsenseF(s)󰂘Hv(s)

vˆcomp2 VinrmsV

2󰂘

K2󰂘KFQK󰂘

1

o

1󰂘Rsense

s󰂘C󰂘

RboRa󰀎Rb

䇃󱏂󱬒󰻻󰰼㸹󰙓㔥㒰⦃㡖Ӵ䗦󰟑󱭄Ў˖

gGOTA1(1󰀎s2Sf)CZ

v(s)

󰀋C󰀌s(1󰀎 Z󰀎CPs2Sf)

CPf1CZ

2SRCǃf

1

CP3Z

2SR3CZCP

CZ󰀎CP

㋏㒳󱓔⦃Ӵ䗦󰟑󱭄Ў˖

Gopenloop(s) G(s)󰂘Gv(s)

g) OTA1(1󰀎s

2SfCZK2󰀀KFQV2

inrmsRb 󰀋C󰀌s(1󰀎󰂘󰂘1

2󰂘Z󰀎CPs󰂘

2Sf)K1󰀀RsenseVos󰂘CoRa󰀎Rb

CP

36

(4.12)

(4.13) (4.14) ㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞󱅲偠㒧󱵰

4.2 Џ⬉䏃󰜗ӊ󰦖󱭄䅵ㅫ󰦞䗝󱢽

󱴀㡖󱇚䆺㒚䅵ㅫ󱮴ḹBoost PFCЏ⬉䏃ⱘ󰦖󱭄ˈ⹂󱅮󰜗ӊ㾘Ḑ󱑊󱇍䚼󰟚󱤳㗫󰜗ӊ䖯㸠󱤳㗫䅵ㅫ˄⊼˖󱠔󱳝ⱘ󱤳㗫䅵ㅫ󰴛󰳼85VAC䕧󰜹㒓⬉󰥟ˈ⒵䕑䕧󰟎ⱘ󱚙󰞉ϟ䖯㸠˅DŽ佪󰜜㒭󰟎Џ⬉䏃ⱘ䆒䅵㾘Ḑ˖

㸼4-1 󱮴ḹBoost PFC⬉䏃䆒䅵㾘Ḑ㸼

Table 4-1 Design specification list of Bridgeless Boost PFC

󰦖󱭄

䕧󰜹㒓⬉󰥟乱󱅮乥⥛󱳔Ԣ䕧󰜹㒓⬉󰥟˄RMS󰘐˅󱳔催䕧󰜹㒓⬉󰥟˄RMS󰘐˅

乱󱅮󱳔󰻻䕧󰟎󰡳⥛乱󱅮䕧󰟎⬉󰥟

ヺ󰧋󰘐

flineVinrms_minVinrms_maxPout_maxVoutfsw

50Hz85VAC 265VAC 300W 385VDC100KHz0.93

PFC⬉䏃󱎹԰乥⥛Ԅ䅵󱬜⥛˄85V䕧󰜹˅

󱳔󰻻䕧󰜹󰡳⥛󱳔󰻻䕧󰜹⬉⌕˄RMS󰘐˅

KPin_max

Pout_max

KPin_maxVinrms_min

322.581W3.795A

Iinrms_max

1ǃPFC󰦬󱤶󰰼󱎹԰乥⥛ⱘ䗝󱢽

PFC󰦬󱤶󰰼ⱘ󱎹԰乥⥛䗝󱢽󱑊≵󱳝ϹḐⱘ󱷛󰞚DŽԚ󱎹԰乥⥛󱖙乏䎇󰻳催ҹ󰞣󱇣⺕㢃󰜗ӊ󰦞󰦬󱤶󰰼󱭈ԧⱘԧ⿃ˈ󰧠󱯊󰞣󱇣䕧󰜹⬉⌕ⱘ󰼅ⳳDŽԚ󱎹԰乥⥛䖛催Ӯ󱓩䍋󱓔󰝇󰰼ӊⱘ󱤳㗫䖛󰻻ˈ󱬜⥛䖛ԢDŽ󰳼󰻻䚼󰟚ⱘ󱑨⫼䞠30KHz̚300KHz󱰃󰧃ҹ㗗㰥ⱘ㣗󰳈DŽ󰳼󱴀՟Ё䗝󱢽󱎹԰乥⥛Ў100KHzˈ󰝐乒њ󰦬󱤶󰰼ⱘԧ⿃󰩠󱬜⥛DŽ󰳼ℸ󱎹԰乥⥛ϟPFC⬉󱛳󰘐󱮴乏󰻾󰻻ˈԧ⿃䕗󱇣DŽ䕧󰜹⬉⌕ⱘ󰼅ⳳг㛑󰞣󱇣󰠄󱳔󱇣DŽ󰧠󱯊MOSFET󰩠Ѡ󱵕ㅵⱘ󱓔󰝇󱤳㗫г㛑㓈󱣕󰳼ϔ󱅮ⱘ∈󱑇DŽ

2ǃ催乥䕧󰜹⬉󱆍䅵ㅫ

Ӵ㒳Boost PFC⬉䏃Ё󱭈⌕ḹ󰧢Ӯ󱥹󰜹ϔϾ⬉󱆍󰘐䕗󱇣ⱘCBB⬉󱆍ˈℸ⬉󱆍ⱘЏ㽕԰⫼󱰃󱡥󰠊䕧󰜹⬉󰥟ⱘ󱴖⊶DŽ󰳼󱮴ḹBoost PFCЁ䆹⬉󱆍󱥹ѢPFC⬉󱛳󰠡ǃϸ↡㒓П䯈ˈՓ⫼󰽖ϟ󰝀󱓣䅵ㅫ󱅗ⱘ󱆍󰘐˖

37

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

Cin Krip

Iinrms_max

2SufswuruVinrms_min

3.795

(4.15) 5

2Su10u0.04u85 355.5u10󰀐9F 0.2u

󱓣ЁKripЎ⬉󱛳⬉⌕ⱘ㒍⊶㋏󱭄ˈϔ㠀󰳼10%̚30%П䯈DŽrЎ䕧󰜹㔥󰥟催乥㒍⊶㋏󱭄ˈϔ㠀Ў3%̚9%ˈ䖭䞠󰦪4%DŽ䗮䖛䅵ㅫ䗝󱅮CinЎ330nFˈ630VⱘCBB󱮴󱵕󱗻⬉󱆍DŽ⊼󱛣Cinϡ󱅰䗝ⱘ䖛󰻻ˈ󰧺󰟭Ӯ󰹲󰡴䕧󰜹㒓⬉󰥟󰩠䕧󰜹⬉⌕П䯈ⱘⳌ⿏ǃ䰡ԢPF󰘐DŽ

3ǃPFC⬉󱛳ⱘ䅵ㅫǃ䆒䅵󰦞󱤳㗫󰟚󱵤

PFC⬉󱛳󰘐ⱘ󰻻󱇣󱇚󰞇󱅮䕧󰜹㒓⬉⌕催乥㒍⊶ⱘ󰻻󱇣ˈ䗮󱐌⬉󱛳󰘐󱰃䗮䖛󱇚㒍⊶⬉⌕󱋄󱋄󰘐䆒󱅮Ў20%ⱘ󱳔󰻻䕧󰜹㒓⬉⌕󱴹⹂󱅮ⱘDŽ㗠󱳔󰻻䕧󰜹㒓⬉⌕󰦥⫳󰳼󱳔Ԣ䕧󰜹㒓⬉󰥟˄85VAC˅ⱘ󱋄󰘐󱯊󰠏ˈ䅵ㅫ⬉󱛳㒍⊶⬉⌕󱋄󱋄󰘐Ў˖

'Irip 2u

Pout_max

KuVinrms_min

'Irip

u20% 2u

300W

u20% 1.073A (4.16)

0.93u85V

󰟭󱳔󰻻󱋄󰘐⬉󱛳⬉⌕Ў˖

Iinpeak Iinpk_max󰀎

2

2u

300W1.073A

󰀎 5.904A (4.17)

0.93u85V2

385󰀐85u2

0.688 (4.18)

385

󱳔Ԣ䕧󰜹㒓⬉󰥟85VACⱘ󱋄󰘐󱯊󰠏󱇍󱑨ⱘ󰤴ぎ↨DЎ˖

D

Vout󰀐Vinrms_minu2

Vout

PFC⬉󱛳󰘐Փ⫼ϟ󱓣⹂󱅮˖

L

Vinrms_minu2uD

fswu'Irip

85u2u0.688󰀐6

77110 uH (4.19) 5

10u1.073

󱴀󱭛󱅲偠󱠔Փ⫼ⱘ󱮴ḹBoost PFC⬉䏃󱰃󰟚ゟ⬉󱛳㒧󱵘ˈ䖭⾡㒧󱵘Փ⫼ϸϾ⬉󱛳󰟚󰟿󱬒㕂Ѣ䕧󰜹↡㒓L󰩠NϞˈ󰟭䗝󱢽↣Ͼ⬉󱛳󰘐Ў400ȝHˈ󱘏⬉󱛳󰘐

800ȝHDŽ⺕㢃󱴤󱭭ЎCSC󰝀󰧌ⱘCH358125ˈ󰝊󰦖󱭄󰽖㸼4-2󱠔⼎DŽ󰟽⫼AL󰘐䅵ㅫ㒩󰠊400ȝH⬉󱛳䳔㽕ⱘ󰣱󱭄:

400PHu106

N= 58.47 (4.20)

Al

䗝󱢽󰣱󱭄Ў58󰣱ˈ㒓󱕘ЎAWG18ˈ󰤩󱈖㒩󰠊DŽ󱳝󱬜⬉󱛳Ў˖

Lsplit

Alu582 393.6PH (4.21)

106

偠䆕⺕㢃󰳼󱋄󰘐⬉󱛳⬉⌕󱯊ϡӮ佅󰩠ˈ䅵ㅫ󱋄󰘐⺕䗮󱆚󱑺Ў˖

38

㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞󱅲偠㒧󱵰

Bmax

IinpeakuLsplit

NuAe

5.904Au393.6PH

0.591T (4.22)

58u0.678cm2

⬅Ϟ󱓣䅵ㅫ󰧃ⶹBmax󰀟Bsatˈ󰟭⺕㢃ϡӮ佅󰩠DŽ

㸼4-2 CH358125⺕㢃󱴤󱭭⡍󱗻㸼Fig.4.2 Characteristics list of CH358125

乍Ⳃ⺕㢃󰵟󰧋⺕㢃󱴤󱭭佅󰩠⺕䗮󱆚󱑺˄Bsat˅Ⳍ󱇍⺕󱇐⥛˄ȝ˅

󰘐

CH358125HighFlux Powder Core

1.5⡍󱮃󱢝

125117mH/1000T

8.98cm 0.678cm2

AL󰘐˄󰤗󰣱˅⺕䏃䭓󱑺˄Lp˅⺕㢃󱟾䴶⿃˄Ae˅

PFC⬉󱛳ⱘ󱤳㗫󰣙󱣀㒩㒘󱤳㗫Pcopper󰩠⺕㢃󱤳㗫Pcoreϸ⾡DŽЎњㅔ󰣪䅵ㅫˈ㒩㒘󱤳㗫󰦾䅵ㅫⳈ⌕⬉䰏󱤳㗫DŽḍ󱥂󱅲⌟ˈPFC⬉󱛳ⱘⳈ⌕⬉䰏RdcЎ0.046ȍDŽ䅵ㅫ䕧󰜹⬉󰥟Ў85VACǃ䕧󰟎⒵䕑󱯊ⱘ㒩㒘󱤳㗫Ў˖

2

Pcopper Iinrms_maxuRdc 0.662W (4.23)

⺕㢃󱤳㗫󱰃⬅Ѣ⬉󱛳⬉⌕㒍⊶󱠔󱓩䍋ⱘ⺕⒲󱤳㗫DŽЎњ䅵ㅫ⬉󱛳⬉⌕㒍⊶󱓩䍋ⱘ⺕⒲󱤳㗫䳔㽕䅵ㅫ⬅󱅗󱓩䍋ⱘ⺕䗮󰦬󰣪䞣'B˖

'B

'IripuLsplit

NuAe

1.073Au393.6PH

0.107T (4.24) 2

58u0.678cm

⺕㢃󱤳㗫Ϣ⺕䗮󰦬󰣪䞣󰦞󰝊乥⥛󱳝󰝇ˈ⺕㢃󰥖󰬚󱦤կњ䆹󰵟󰧋ⱘ󱤳㗫󱢳󰧜󰝀󱓣󰽖ϟ˖

PL󰀋B,F󰀌 2.687uB2.59uF1.33

󰝊ЁBⱘ󰤩ԡЎ⡍󱮃󱢝˄T˅ˈFⱘ󰤩ԡЎKHzDŽḍ󱥂󱤳㗫󱢳󰧜󰝀󱓣󱳝˖

Pcore PL(

'B

,fsw) 0.625󰀃󰀃W (4.25) 2

󰟭󱮴ḹBoost PFCϸϾPFC⬉󱛳ⱘ󱘏󱤳㗫Ў˖

Pchoke 2u(Pcopper󰀎Pcore)

2u(0.662󰀎0.625) (4.26) 2.574󰀃󰀃W

39

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

4ǃ䕧󰟎⬉󱆍ⱘ䅵ㅫ󰦞䗝󱢽

䕧󰟎⬉󱆍Coⱘ䗝󱢽󱳝ҹϟ󰞴Ͼ󱮍䴶ⱘ㗗㰥˖

(1)⒵䎇䕧󰟎⬉󰥟㒍⊶ⱘ㽕∖ˈ󰘛䆒󱴀䆒䅵Ё䕧󰟎⬉󰥟㒍⊶󰳼⒵䕑󱚙󰞉ϟ䰤󰠊Ў

r6Vˈ󰟭󱣝✻ϟ󱓣䅵ㅫ䕧󰟎⬉󱆍ⱘ󰻻󱇣˖

Co(cal)

Pout300W

206.7PF (4.27)

2Su2flineuVripuVout2Su100Hzu6Vu385V

(2)㢹⬉䏃䆒䅵Ё䳔㽕䆒󱅮䕧󰟎⬉󰥟ⱘ󰖱󱣕󱯊䯈˄Hold-up Time˅ˈ󰟭䕧󰟎⬉󱆍ⱘ

䗝󱢽䳔㽕㗗㰥⒵䎇󰖱󱣕󱯊䯈ⱘ㽕∖ˈ䗮󱐌䆹󰘐䛑㽕↨󱣝✻⬉󰥟㒍⊶㽕∖䅵ㅫ󰘐㽕󰻻DŽ󰘛䆒󱴀䆒䅵Ё䕧󰟎⬉󰥟󱳔Ԣ󰘐Ў285Vˈ󰖱󱣕󱯊䯈㽕∖30mSˈ󰟭󱣝✻ϟ󱓣䅵ㅫ䕧󰟎⬉󱆍˖

Co(cal)

2uPoututhold2u300Wu30mS

268.7PF (4.28)

Vo2󰀐Vo2min(385V)2󰀐(285V)2

(3)䕧󰟎⬉󱆍ⱘESR󱓩䍋ⱘ󱤳㗫󰳼䆒䅵Ё󱖙乏㗗㰥󰠄ˈ󱖙乏󰖱䆕󱎹乥󰩠󱓔󰝇乥⥛

ⱘ⬉⌕㒍⊶ϡӮ䍙䖛󰰼ӊ󰥖󰬚㒭󰟎ⱘ󱳔󰻻󰦖󱭄DŽ⬉󱆍󰧃ҹ䗮䖛󱑊㘨󰞣󱇣ESR󰘐󱑊󰹲󰡴⬉⌕㒍⊶㗤󰦫󰡯DŽ

(4)䆒䅵ЁPFC䕧󰟎⬉󰥟Ў385Vˈ㗗㰥䕧󰟎⬉󰥟㒍⊶󰦞䎇󰻳ⱘ⬉󰥟㺩䞣DŽ䗝󱢽㗤

󰥟450V㋏󰟫ⱘ⬉󱆍DŽ

㓐Ϟ󱠔䗄ˈ󱑊㗗㰥󱅲䰙Ё⬉󱆍20%ⱘ󱆍䞣㺩󱑺DŽ䅵ㅫ⬉󱆍󰘐󰽖ϟ:

Co

Co(cal)

1󰀐20%

268.7PF

335.8PF (4.29)

80%

䗝󱢽Rubycon MXG ㋏󰟫330ȝF 450V⬉󱆍DŽ

5ǃ󱓔󰝇ㅵ󰩠󰤛󰥟Ѡ󱵕ㅵ䗝󱢽󰦞󱤳㗫䅵ㅫ

󱴀䆒䅵Ёⱘ󱓔󰝇ㅵ󰩠󰤛󰥟Ѡ󱵕ㅵḍ󱥂󰝊⬉󰥟󱑨󰡯󰩠⬉⌕󱑨󰡯䗝󰦪ˈՓ⫼њ

PFC⬉䏃䗖⫼ⱘCoolMOSTM㋏󰟫MOSFETҹ󰦞⺇󰣪⸙˄SiC˅Ѡ󱵕ㅵҹ󰞣󱇣󱇐䗮󱤳㗫ҹ󰦞󰦡󰧥󱘶󰻡󱠔󱓩䍋ⱘ󱤳㗫DŽMOSFET󰩠DIODEⱘ󰵟󰧋󰩠󰦖󱭄󰽖ϟ˖

MOSFET: Infineon Technologies CoolMOSTM SPP20N60C3

VDS

ID

Rds_on

Coss˄400V˅

tf

VSD

650V 20.7A 0.19ȍ

VRRM

IF

VF

70pF 12nS1V Cdiode

DIODE: Infineon Technologies Silicon Carbide Diode SDT08S60

600V8A1.5V25pF

󱗑⬹⬉󱛳⬉⌕㒍⊶ˈMOSFET󰩠DIODEⱘ⬉⌕󱳝󱬜󰘐⬅ϟ󰟫󰝀󱓣䅵ㅫ[1]˖

40

㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞󱅲偠㒧󱵰

IQ_rms

8u2uVinrms_rmsPout

u1󰀐K󰂘Vinrms_min3SuVout300W8u2u85Vu1󰀐0.93u85V3Su385V 3.254A

MOSFET:

ID_rms

8u2uVinrms_rmsPout

uK󰂘Vinrms_min3SuVoutDIODE:

300W8u2u85Vu0.93u85V3Su385V 1.954A

MOSFETⱘ󱤳㗫䅵ㅫ≵󱳝󰳎󱅮ⱘ󱮍⊩ˈ󱇸󰝊󱰃󱓔󰝇󱤳㗫ⱘ乘⌟󱳝󰻮⾡󰝀󱓣DŽ󱴀󱭛䅵ㅫЁ󰻮󱭄󰦖󱭄Փ⫼󱳔󰴣󱚙󰞉ⱘ󱭄󰘐ˈ󱤳㗫䅵ㅫⱘ㒧󱵰ҙկ󰦖㗗˖

MOSFET󱇐䗮󱤳㗫˖

22

Pcond_fet Rds_onuIQ_rms 0.19u3.254 2.012󰀃󰀃W

⬅䕧󰟎⬉󱆍Coss󱓩䍋ⱘ󱤳㗫˖

Pcoss

󰝇󱮁󱤳㗫˖

112uCossuVoutufsw u70u10󰀐12u3852u105 0.519󰀃󰀃W22

PQ_tf

11

uVoutuIinrms_maxutfufsw u385u3.795u12u10󰀐9u105 0.877󰀃󰀃W22

PQ_boost Pcond_fet󰀎Pcoss󰀎PQ_tf 3.408󰀃󰀃W

󰟭󱮴ḹBoost PFC⬉䏃Ё󰻘Ѣ󱓔󰝇⢊󱗕ⱘMOSFET󱓔󰝇ㅵ󱤳㗫Ў˖

󱮴ḹBoost PFC⬉䏃Ё󱶤Ͼ󱓔󰝇ㅵ󱎹԰Ѣ󱓔󰝇⢊󱗕󱯊ˈ󰦺ϔϾ󱓔󰝇ㅵ󰻘Ѣ㓁⌕⢊󱗕ˈ⌕䖛ⱘ⬉⌕Ў⬉󱛳⬉⌕DŽЎњㅔ󰣪䅵ㅫˈ󰘛䆒⬉⌕󰜼䚼⌕䖛MOSFETⱘԧѠ󱵕ㅵDŽ󰟭䅵ㅫ󰝊󱇐䗮󱤳㗫󰽖ϟ˖

PQ2 Iinrms_maxuVSD 3.795󰀃Au1󰀃V 3.795󰀃W

㓐Ϟ󱠔䗄ˈ󱮴ḹBoost PFC⬉䏃ЁMOSFET󱘏󱤳㗫Ў˖

PQ PQ_boost󰀎PQ2 3.408󰀎3.795 7.203󰀃W

󰤛󰥟Ѡ󱵕ㅵⱘ󱤳㗫󰣙󱣀󱇐䗮󰥟䰡󱤳㗫󰩠ԧ⬉󱆍󱤳㗫ϸϾ䚼󰟚ˈ󰟚󰟿Ў˖󱇐䗮󰥟䰡󱤳㗫˖Pcond_diode ID_rmsuVF 1.954󰀃Au1.5󰀃V 2.931󰀃Wԧ⬉󱆍󱤳㗫˖

Pdiode_cap

112

uCdiodeuVoutufsw u26u10󰀐12u3852u105 0.193󰀃W22

Ѡ󱵕ㅵ󱘏󱤳㗫Ў˖Pdiode Pcond_diode󰀎Pdiode_cap 2.931󰀎0.193 3.124󰀃W

41

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

6ǃ⬉⌕Ѧ󱛳󰰼TS1ǃTS2

⫼ѢẔ⌟⬉⌕ⱘϸϾ⬉⌕Ѧ󱛳󰰼ЎPulse󰝀󰧌ѻ󰪕DŽTS1󰵟󰧋ЎPE-64518ˈ

TS2󰵟󰧋ЎPE-63586DŽ㒩㒘㒧󱵘󰩠󰣱󱭄󰽖ϟ˖

P-64518 P-63586

󰳒4-7 ⬉⌕Ѧ󱛳󰰼TS1ǃTS2㒧󱵘󰳒Fig.4-7 Structure diagrams of current transforms

4.3 󱥻󰠊⬉䏃䆒䅵󰦞󰦖󱭄䅵ㅫ

1ǃ乥⥛䆒󱅮⬉䰏RFREQ

EE

󰳒4-8 ICE1PCS01㢃⠛󱎹԰乥⥛䆒󱅮󱳆㒓Fig.4-8 Resistor-Frequency characteristic

PFC󱎹԰乥⥛䆒󱅮Ў100KHzˈḍ󱥂󰳒4-8㒭󰟎ⱘ㢃⠛乥⥛䆒󱅮󱳆㒓ˈ⬅ϟ󱓣䅵ㅫ⬉䰏RFREQ˖

100 󰀐1.5306uRFREQ󰀎175.51󰂟RFREQ 49.34K:

(4.30)

䗝󱢽RFREQЎ49.9Kȍ

2ǃ⬉⌕⦃㸹󰙓⬉󱆍Cicomp

䆹⬉󱆍ⱘ԰⫼󱰃󱇍⬉󱛳⬉⌕ⱘ䞛ḋ󰖵󰧋䖯㸠Ⓒ⊶ˈ󱕫󰠄󰦡󱯴⬉󱛳󱑇󰴛⬉⌕ⱘ䞛ḋ󰖵󰧋DŽ󱠔ҹ䆹⬉󱆍ѻ⫳ⱘ䕀󱡬乥⥛fAVE󱖙乏ԢѢ󱓔󰝇乥⥛fswˈ⫼Ѣ䰡Ԣ催乥䚼󰟚ⱘ󰹲Ⲟˈ䆒󱅮fAVE 15KHzˈ⬅㢃⠛󰦖󱭄gOTA2 1.1mSǃM1_max 0.9,K1 7󰟭˖

Cicompt

gOTA2uM1

1.5nF (4.31)

K1u2SfAVE

42

㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞󱅲偠㒧󱵰

󰦪CicompЎ2.2nFˈ⬅ℸ⬉󱆍󱕫󰠄ⱘ⬉⌕⦃䕀󱡬乥⥛fAVEЎ10KHz󱎺󰧇DŽ

3ǃ䕧󰟎⬉󰥟󰟚󰥟⬉䰏RaǃRb

ḍ󱥂4.1㡖󰳒4-3󰧃ⶹ˖

VsenseRb5

(4.32) VoutRa󰀎Rb385

䆒󱅮Ra 750K:ˈ䅵ㅫ󰧃󱕫Rb 9.87K:DŽ󱅲䰙⬉䏃ЁRbЎ10K:󰧃󰦬⬉䰏DŽ󱗑⬹䕧󰟎⬉󰥟ⱘ㒍⊶ˈ󰳼󰟚󰥟⬉䰏Ϟ󱓩䍋ⱘ󱤳㗫Ў˖

2

Vout 0.2󰀃W (4.33) Ra󰀎Rb

Pdivide

4ǃ⬉󰥟⦃㸹󰙓㔥㒰

⬅4.1㡖ⱘ󰟚󱵤㒧䆎󰧃ⶹ󰟎󱥻󰠊䕧󰟎󰠄󰦡作䕧󰜹Ӵ䗦󰟑󱭄Ў˖

G(s) GF(s)󰂘Hv(s)

VV

2inrms2o

ˆsensevˆcompv󰂘

Rb1

󰂘

s󰂘CoRa󰀎Rb

󰂘

K2󰂘KFQK1󰂘Rsense

(4.34)

㗗󱆳䕧󰜹㒓⬉󰥟Ў85V󰦞265V󱚙󰞉ϟⱘӴ䗦󰟑󱭄G󰀋s󰀌˖85V䕧󰜹ϟ

K2_85 1.837ˈ265V䕧󰜹ϟK2_265 0.328DŽҷ󰜹󱭄󰘐󱕫˖

G85(s)

46.228s

G265(s)

80.228s

󱥻󰠊䕧󰟎󰠄󰦡作䕧󰜹ⱘ⊶⡍󰳒󰽖ϟ˖

󱥻󰠊䕧󰟎󰠄󰦡作䕧󰜹󰹲Ⲟ

8040󱥻󰠊䕧󰟎󰠄󰦡作䕧󰜹Ⳍԡ

85V265V8520󰹲Ⲟ(dB)0Ⳍԡ902095401󰀑10

30.1110100

1󰀑10

4

1000.1

110100

1󰀑10

3

1󰀑10

4

乥⥛(HZ)乥⥛(HZ)

󰳒4-8 󱥻󰠊䕧󰟎󰠄󰦡作䕧󰜹Ӵ䗦󰟑󱭄󰹲Ⲟ󰩠Ⳍԡ󱎺󰳒Ёˈ󱅲㒓˖85V㒓⬉󰥟䕧󰜹˗㰮㒓˖265V㒓⬉󰥟䕧󰜹

Fig.4-8 Control to output Gain and Phase

Solid Line: Gain at 85V line; Dashed Line: Gain at 265V line

⬅󱳾㸹󰙓󰠡ⱘ󰹲Ⲟ󰳒󰧃㾕ˈICE1PCS01ⱘ䴲㒓󱗻󱐌󱭄󰳼ϡ󰧠ⱘ䕧󰜹⬉󰥟󱚙󰞉

43

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

ϟ󱏆㒣󰘮њ󰹲Ⲟⱘ㸹󰙓ˈ85V󰩠265Vⱘ󰹲Ⲟ󱳆㒓г󱕜Ⳍ䖥DŽ䖭󱈅ㅔ󰣪њ㸹󰙓⦃㡖ⱘ䆒䅵ˈ󰹲󱔎њ⬉䏃ⱘ〇󱅮󱗻DŽ

PFC⬉䏃ⱘ⬉󰥟⦃󱏺󱆑䕗じˈЎⱘ󱰃㹄󰞣䕧󰟎⬉󱆍ϞⱘѠ⃵䇤⊶DŽ䖛󰻻ⱘ⬉󰥟⦃󱏺󱆑гӮ󱇐㟈䕧󰟎⬉󰥟䇗㡖󱯊󱇍䕧󰜹⬉⌕⊶󱔶ⱘ󱕅󰪡DŽ󱇚⬉󰥟⦃㸹󰙓󰧢ⱘ⦃䏃こ䍞乥⥛䆒󱅮󰳼10Hz󰠄20HzП䯈󱰃䕗󰧜䗖ⱘˈḍ󱥂Ϟ䗄䅵ㅫ󰦞󰳒⼎󰧃󱕫85V㒓⬉󰥟䕧󰜹󱚙󰞉ϟˈ󱥻󰠊䕧󰟎󰠄󰦡作䕧󰜹ⱘ󰹲Ⲟ󰳼10Hz󱯊Ў-2.66dBDŽ䆒󱅮㸹󰙓󰧢ⱘこ䍞乥⥛Ў10Hzˈ󰟭䳔㽕䇃󱏂󱬒󰻻󰰼㸹󰙓㔥㒰󱦤կ+2.66dBⱘ㸹󰙓󰹲ⲞDŽ䇃󱏂󱬒󰻻󰰼㸹󰙓㔥㒰Ӵ䗦󰟑󱭄󰽖ϟ˖

)

2SfCZ

Gv(s)

󰀋CZ󰀎CP󰀌s(1󰀎s2Sf)

CP

䳊ǃ󱵕⚍乥⥛Ў˖

gOTA1(1󰀎sfCZ

11

ǃfCP

RCC2SR3CZ

2S3ZP

CZ󰀎CP

䗝󱢽󰹲󰡴ϔ󱇍䳊󱵕⚍㸹󰙓ⱘ󰽑󰻘󱰃󱮶㛑󱦤催䕧󰟎⬉󰥟ⱘԢ乥󰪡󱑨ˈ󰦜㛑󱡥󰠊䕧󰟎⬉󱆍ϞⱘѠ⃵䇤⊶DŽ䳊⚍ϔ㠀䗝󱢽󰳼1Hz̚10HП䯈ˈ⫼Ѣ󰹲󰡴Ԣ乥↉ⱘⳌԡ㺩󱑺DŽ󱵕⚍ⱘ󱬒㕂Џ㽕ⳟ󱡥󰠊Ѡ⃵䇤⊶⬉󰥟ⱘ㽕∖ˈ䖛Ԣⱘ󱵕⚍乥⥛Ӯ󱓩䍋⬉󰥟⦃ⱘ󰪡󱑨䗳󱑺󰘣󱜶ˈ䖛催ⱘ󱵕⚍乥⥛󰦜Ӯ󰳼⦃䏃Ё󱓩󰜹䕗󰻻ⱘѠ⃵䇤⊶ˈ󱇍䕧󰜹⬉⌕ⱘ⊶󱔶䗴󱟤󱕅󰪡DŽ󱳔㒜䗝󱢽󱵕⚍ⱘ乥⥛Ў50HzDŽḍ󱥂ҹϞ㽕∖ˈ󰟫󱮍⿟˖

­10Hz·󰀐6§42101uu󰀎󰂘i¸¨°5Hz¹©°20log 󰀎2.66dB

10Hz°󰂘i)2󰂘i󰂘Su10Hzu󰀋CZ󰀎CP󰀌u(1󰀎

°50Hz°

1°

10Hz (4.35) ®fCZ

󰂘󰂘󰂘2RCS3Z°

°1

50Hz°fCP

󰂘󰂘RCC°2S󰂘3ZP

°CZ󰀎CP°¯

㾷󱕫˖CZ 0.97PFˈCP 107nFˈR3 32.78K:

󱅲䰙䗝󰦪󰧘󰜗ӊ󰦖󱭄Ў˖CZ 1PFˈCP 100nFˈR3 33K:ҷ󰜹Ϟ䗄󰜗ӊ󰦖󱭄󰧢䇃󱏂󱬒󰻻󰰼㸹󰙓⦃㡖Ӵ䗦󰟑󱭄⊶⡍󰳒󰽖ϟ˖

44

㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞󱅲偠㒧󱵰

䇃󱏂󱬒󰻻󰰼󰹲Ⲟ

40

䇃󱏂󱬒󰻻󰰼Ⳍԡ

2020

40󰹲Ⲟ(dB)Ⳍԡ0

60208040600.1

110100

1󰀑10

3

1󰀑10

4

1000.1

110100

1󰀑10

3

1󰀑10

4

乥⥛(HZ)乥⥛(HZ)

󰳒4-9 䇃󱏂󱬒󰻻󰰼㸹󰙓⦃㡖Ӵ䗦󰟑󱭄󰹲Ⲟ󰩠Ⳍԡ

Fig.4-9 Error Amplifier Gain and Phase

㸹󰙓󰧢ⱘ󱓔⦃Ӵ䗦󰟑󱭄ЎGopenloop(s) G(s)󰂘Gv(s)ˈ󰳒4-10Ў㸹󰙓󰧢ⱘ󱓔⦃Ӵ䗦󰟑󱭄⊶⡍󰳒DŽ

󱓔⦃󰹲Ⲟ

100󱓔⦃Ⳍԡ

85V265V12050140󰹲Ⲟ(dB)050Ⳍԡ1601001500.1

110100

1󰀑10

3

1󰀑10

4

1800.1

110100

1󰀑10

3

1󰀑10

4

乥⥛(HZ)乥⥛(HZ)

󰳒4-10 㸹󰙓󰧢󱓔⦃Ӵ䗦󰟑󱭄󰹲Ⲟ󰩠Ⳍԡ

Fig.4-10 Open loop Gain and Phase

Solid: Gain at 85V line;Dashed: Gain at 265V line

㸹󰙓󰧢ⱘこ䍞乥⥛󰳼85V㒓⬉󰥟䕧󰜹󱯊Ў10Hzˈ265V㒓⬉󰥟䕧󰜹󱯊㑺Ў

15HzDŽ⒵䎇䆒䅵㽕∖DŽ

45

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

4.4 󱅲偠⊶󱔶󰦞󱭄󱥂󰟚󱵤

ḍ󱥂Ϟ㡖ЁЏ⬉䏃󰩠󱥻󰠊⬉䏃󰜗ӊ󰦖󱭄䅵ㅫ󰦞󰵟󰧋䗝󱢽ⱘ㒧󱵰󱨁󱓎њ󱮴ḹ

Boost PFC⬉䏃ⱘⓨ⼎󱵓ˈ󰽖󰳒4-11󱠔⼎ˈ󰧘󰜗ӊ󱏆󱷛⊼󰳼󰳒ЁDŽ䆺㒚ⱘPROTEL⬉䏃󰳒ǃPCB󱏗㒓󰳒󰦞󱴤󱭭㸼󰦖㾕䰘󱔩A̚DDŽ

󰳒4-11 󱮴ḹBoost PFC⬉䏃ḋ󱵓Fig.4-11 Demo board of Bridgeless Boost PFC

⬉䏃ⱘ⌟䆩󱮍⊩󰞇󱅮њ⌟䆩󱭄󱥂ⱘ󰧃䴴󱗻󰦞ⳳ󱅲󱗻ˈ󱮴ḹBoost PFC⬉䏃ⱘ⌟䆩󱮍󱓣󰽖ϟ󱠔⼎:

󰳒4-12 󱮴ḹBoost PFC⬉䏃ḋ󱵓⌟䆩⼎󱛣󰳒

Fig.4-12 Test schematic of Bridgeless Boost PFC demo board

⌟䆩ЁՓ⫼󱅝󱥋Ӻ6813BѸ⌕⑤Ў󱮴ḹBoost PFC䆒󱅮󰧘⾡䳔㽕ⱘ䕧󰜹⬉󰥟ˈ䕧󰟎䋳䕑Փ⫼ⱘ󱰃Chromaⱘ催󰥟⬉󱄤䋳䕑DŽ⬉󱄤䋳䕑󰧃ҹ䇗㡖󰧘⾡䕧󰟎󰡳⥛ҹ⒵䎇⌟䆩䳔㽕DŽ䕧󰜹⬉⌕ǃ䕧󰜹󰡳⥛ǃ󰡳⥛󰲴󱭄󰦞THDⱘ󱭄󱥂⬅⬉󰡯󰟚󱵤ҾPM100䇏󰦪DŽPFC䕧󰟎⬉󰥟⫼󱭄󱄫⬉󰥟㸼⌟䞣ˈ䕧󰟎⬉⌕⬅Chroma⬉󱄤䋳䕑䇏󰦪DŽ⌟䆩Ё󰾟㒜󱥹󰜹ϔϾϸ㑻EMI󰝅῵Ⓒ⊶󰰼,󰳼󱬜⥛󱭄󱥂Ёг󰣙󰧿њ䖭ϾEMIⒸ⊶󰰼ⱘ󱤳㗫DŽ

46

㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞󱅲偠㒧󱵰

4.41 󱮴ḹBoost PFC⬉䏃󱅲偠⊶󱔶

1ǃ〇󱗕⬉䏃⊶󱔶:

⌟䆩⒵䕑󱚙󰞉ϟˈ󰧘⾡ϡ󰧠ⱘ䕧󰜹⬉󰥟󱯊ⱘ⬉󱛳⬉⌕ǃPFC䕧󰟎⬉󰥟⊶󱔶DŽ

85VAC㒓⬉󰥟䕧󰜹

⊶󱔶1˖䕧󰟎⬉󰥟˗⊶󱔶2˖⬉󱛳⬉⌕˗

⊶󱔶3˖䕧󰜹㒓⬉󰥟

110VAC㒓⬉󰥟䕧󰜹

⊶󱔶1˖䕧󰟎⬉󰥟˗⊶󱔶2˖⬉󱛳⬉⌕˗

⊶󱔶3˖䕧󰜹㒓⬉󰥟

220VAC㒓⬉󰥟䕧󰜹

⊶󱔶1˖䕧󰟎⬉󰥟˗⊶󱔶2˖⬉󱛳⬉⌕˗

⊶󱔶3˖䕧󰜹㒓⬉󰥟

265VAC㒓⬉󰥟䕧󰜹

⊶󱔶1˖䕧󰟎⬉󰥟˗⊶󱔶2˖⬉󱛳⬉⌕˗

⊶󱔶3˖䕧󰜹㒓⬉󰥟

󰳒4-13 䕧󰜹㒓⬉󰥟ǃ䕧󰜹㒓⬉⌕󰦞PFC䕧󰟎⬉󰥟⊶󱔶(⒵䕑)

Fig.4-13 Waveforms of input voltage, input current and PFC output voltage (Full load)

47

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

2ǃ⒵䕑󱚙󰞉ϟ󰨃󰡼⊶󱔶˖

⌟䆩⒵䕑300W󱚙󰞉ϟˈ⬉䏃󰨃󰡼󱯊󰠏ⱘ䕧󰟎⬉󰥟󰩠䕧󰜹⬉⌕⊶󱔶DŽ

85VAC䕧󰜹⒵䕑䍋󰡼⊶󱔶1˖PFC䕧󰟎⬉󰥟⊶󱔶⊶󱔶2˖䕧󰜹⬉⌕⊶󱔶⊶󱔶3˖䕧󰜹㒓⬉󰥟⊶󱔶

110VAC䕧󰜹⒵䕑䍋󰡼⊶󱔶1˖PFC䕧󰟎⬉󰥟⊶󱔶⊶󱔶2˖䕧󰜹⬉⌕⊶󱔶⊶󱔶3˖䕧󰜹㒓⬉󰥟⊶󱔶

220VAC䕧󰜹⒵䕑䍋󰡼⊶󱔶1˖PFC䕧󰟎⬉󰥟⊶󱔶⊶󱔶2˖䕧󰜹⬉⌕⊶󱔶⊶󱔶3˖䕧󰜹㒓⬉󰥟⊶󱔶

265VAC䕧󰜹⒵䕑䍋󰡼⊶󱔶1˖PFC䕧󰟎⬉󰥟⊶󱔶⊶󱔶2˖䕧󰜹⬉⌕⊶󱔶⊶󱔶3˖䕧󰜹㒓⬉󰥟⊶󱔶

󰳒4-14 󰨃󰡼󱯊󰠏䕧󰜹㒓⬉󰥟ǃ䕧󰜹⬉⌕󰦞PFC䕧󰟎⬉󰥟⊶󱔶(⒵䕑䍋󰡼)

Fig.4-14 Waveforms of input voltage, input current and PFC output voltage during startup (Full load startup)

48

㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞󱅲偠㒧󱵰

3ǃぎ䕑󱚙󰞉ϟ䍋󰡼⊶󱔶:

⌟䆩ぎ䕑󱚙󰞉ϟˈ⬉䏃󰨃󰡼󱯊󰠏ⱘ䕧󰟎⬉󰥟󰩠䕧󰜹⬉⌕⊶󱔶DŽ

85VAC䕧󰜹ぎ䕑䍋󰡼⊶󱔶1˖PFC䕧󰟎⬉󰥟⊶󱔶⊶󱔶2˖䕧󰜹⬉⌕⊶󱔶⊶󱔶3˖䕧󰜹㒓⬉󰥟⊶󱔶

110VAC䕧󰜹ぎ䕑䍋󰡼⊶󱔶1˖PFC䕧󰟎⬉󰥟⊶󱔶⊶󱔶2˖䕧󰜹⬉⌕⊶󱔶⊶󱔶3˖䕧󰜹㒓⬉󰥟⊶󱔶

220VAC䕧󰜹ぎ䕑䍋󰡼⊶󱔶1˖PFC䕧󰟎⬉󰥟⊶󱔶⊶󱔶2˖䕧󰜹⬉⌕⊶󱔶⊶󱔶3˖䕧󰜹㒓⬉󰥟⊶󱔶

265VAC䕧󰜹ぎ䕑䍋󰡼⊶󱔶1˖PFC䕧󰟎⬉󰥟⊶󱔶⊶󱔶2˖䕧󰜹⬉⌕⊶󱔶⊶󱔶3˖䕧󰜹㒓⬉󰥟⊶󱔶

󰳒4-15 󰨃󰡼󱯊󰠏䕧󰜹㒓⬉󰥟ǃ䕧󰜹⬉⌕󰦞PFC䕧󰟎⬉󰥟⊶󱔶(ぎ䕑䍋󰡼)

Fig.4-15 Waveforms of input voltage, input current and PFC output voltage during startup (zero load startup)

49

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

4ǃ䋳䕑󰦞⬉󰥟䏇󰦬⌟䆩

⌟䆩⬉䏃󰳼䋳䕑䏇󰦬󰩠䕧󰜹⬉󰥟䇗󰦬ⱘ󱚙󰞉ϟˈ䕧󰟎⬉󰥟󰦞䕧󰟎⬉⌕ⱘ〇󱅮󱗻DŽ

ぎ䕑-⒵䕑@85VAC ⊶󱔶1˖PFC䕧󰟎⬉󰥟⊶󱔶⊶󱔶2˖䕧󰜹㒓⬉󰥟⊶󱔶⊶󱔶3˖䕧󰜹㒓⬉⌕⊶󱔶

⒵䕑-ぎ䕑@85VAC ⊶󱔶1˖PFC䕧󰟎⬉󰥟⊶󱔶⊶󱔶2˖䕧󰜹㒓⬉󰥟⊶󱔶⊶󱔶3˖䕧󰜹㒓⬉⌕⊶󱔶

䕧󰜹⬉󰥟䏇󰦬90V-220V

⊶󱔶1˖PFC䕧󰟎⬉󰥟˄Ѹ⌕㗺󰧜˅⊶󱔶2˖䕧󰟎⬉⌕˄Ѹ⌕㗺󰧜˅

䕧󰜹⬉󰥟䇗󰦬220V-90V

⊶󱔶1˖PFC䕧󰟎⬉󰥟˄Ѹ⌕㗺󰧜˅⊶󱔶2˖䕧󰟎⬉⌕˄Ѹ⌕㗺󰧜˅

󰳒4-16 䋳䕑󰦞䕧󰜹⬉󰥟䏇󰦬⌟䆩⊶󱔶

Fig.4-16 Waveforms of load and input voltage jump test

50

㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞󱅲偠㒧󱵰

5ǃ䕧󰟎⬉󰥟㒍⊶

ϡ󰧠䋳䕑󱚙󰞉ϟⱘ䕧󰟎⬉󰥟㒍⊶⌟䆩ˈ⌟䆩󱯊䕧󰜹㒓⬉󰥟Ў220VACDŽ

䕧󰟎⬉󰥟㒍⊶@38W ⊶󱔶1:⬉󱛳⬉⌕⊶󱔶

⊶󱔶2:䕧󰟎⬉󰥟㒍⊶(Ѹ⌕㗺󰧜)

䕧󰟎⬉󰥟㒍⊶@154W ⊶󱔶1:⬉󱛳⬉⌕⊶󱔶

⊶󱔶2:䕧󰟎⬉󰥟㒍⊶(Ѹ⌕㗺󰧜)

䕧󰟎⬉󰥟㒍⊶@200W ⊶󱔶1:⬉󱛳⬉⌕⊶󱔶

⊶󱔶2:䕧󰟎⬉󰥟㒍⊶(Ѹ⌕㗺󰧜)

䕧󰟎⬉󰥟㒍⊶@308W ⊶󱔶1:⬉󱛳⬉⌕⊶󱔶

⊶󱔶2:䕧󰟎⬉󰥟㒍⊶(Ѹ⌕㗺󰧜)

󰳒4-17 䕧󰟎⬉󰥟㒍⊶Fig.4-17 Output ripple voltage

51

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

6ǃ󱥻󰠊䚼󰟚⊶󱔶󰦞㒚㡖˖

⌟䆩󱥻󰠊⦃䏃ⱘ󰝇䬂⊶󱔶ˈ՟󰽖⬉⌕䞛ḋ㛮⊶󱔶ˈ偅󰡼⬉󰥟⊶󱔶ㄝDŽ

⊶󱔶1˖ICE1PCS01⬉⌕Ẕ⌟㛮󰖵󰧋⊶󱔶2˖⬉󱛳⬉⌕⊶󱔶

⊶󱔶3˖MOSFET偅󰡼󰖵󰧋⊶󱔶󱭈ԧ⊶󱔶

⊶󱔶1˖ICE1PCS01⬉⌕Ẕ⌟㛮󰖵󰧋⊶󱔶2˖⬉󱛳⬉⌕⊶󱔶

⊶󱔶3˖MOSFET偅󰡼󰖵󰧋⊶󱔶㒚㡖⊶󱔶

⊶󱔶1˖ICE1PCS01⬉⌕Ẕ⌟㛮󰖵󰧋⊶󱔶2˖⬉󱛳⬉⌕⊶󱔶

⊶󱔶3˖ICE1PCS01 ICOMP 㛮⬉󰥟⊶󱔶

⊶󱔶1˖󱓔󰝇ㅵⓣ-⑤⬉󰥟VDS⊶󱔶2˖󱓔󰝇ㅵ偅󰡼⬉󰥟

󰳒4-18 ICE1PCS01󱥻󰠊󰲲䏃Ⳍ󰝇⊶󱔶Fig.4-18 Key waveforms of ICE1PCS01 control loop

52

㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞󱅲偠㒧󱵰

4.42 󱮴ḹBoost PFC⬉䏃󱅲偠󱭄󱥂󰟚󱵤

󱭄󱥂䆄󱔩њ󱮴ḹBoost PFC󰳼ϡ󰧠䋳䕑ǃϡ󰧠䕧󰜹⬉󰥟󱚙󰞉ϟⱘ󰧘⾡󰦖󱭄DŽ䆺㒚ⱘ󱭄󱥂㸼Ḑ㾕䰘󱔩Eˈ󱴀㡖ҙ㒭󰟎󱭄󱥂󰳒՟󰦞䇈󱯢DŽ󰦺󰻪ˈ䡈ѢPM100⬉㛑䋼䞣󰟚󱵤Ҿ󰳼䇏󰦪󱇣󰡳⥛󱭄󱥂󱯊ⱘ䇃󱏂䕗󱯢󱰒ˈ󱔧䕧󰟎󰡳⥛󱇣Ѣ20Wҹϟⱘ󱭄󱥂ҙկ󰦖㗗DŽ

󰡳⥛󰲴󱭄—䕧󰟎󰡳⥛@󰧘䕧󰜹⬉󰥟˖

󰀛󰀘󰀔󰀓󰀑󰀜󰀓󰀑󰀛󰀓󰀑󰀚󰀓󰀑󰀙󰀓󰀑󰀘󰀓󰀑󰀗󰀓󰀑󰀖󰀓󰀑󰀕󰀓󰀑󰀔󰀜󰀔󰀚󰀖󰀙󰀚󰀘󰀔󰀔󰀗󰀔󰀘󰀕󰀔󰀜󰀓󰀕󰀖󰀓󰀕󰀙󰀛󰀖󰀓󰀘䕧󰟎󰡳⥛˄:˅󰀔󰀔󰀓󰀕󰀕󰀓󰀕󰀙󰀘3RZHU󰀃)DFWRU󰳒4-19 ϡ󰧠䕧󰜹⬉󰥟󰩠䋳䕑󱚙󰞉ϟⱘ󰡳⥛󰲴󱭄󱳆㒓

Fig.4-19 Power Factors curves under different input voltage and load conditions

󱬜⥛—䕧󰟎󰡳⥛@󰧘䕧󰜹⬉󰥟˖

󰀛󰀘9󰀓󰀑󰀜󰀜󰀓󰀑󰀜󰀛󰀓󰀑󰀜󰀚󱬜⥛󰀓󰀑󰀜󰀙󰀓󰀑󰀜󰀘󰀓󰀑󰀜󰀗󰀓󰀑󰀜󰀖󰀓󰀑󰀜󰀕󰀓󰀑󰀜󰀔󰀜󰀔󰀚󰀖󰀙󰀚󰀘󰀔󰀔󰀗󰀔󰀘󰀕󰀔󰀜󰀓䕧󰟎󰡳⥛˄:˅󰀕󰀖󰀓󰀕󰀙󰀛󰀖󰀓󰀘󰀔󰀔󰀓9󰀕󰀕󰀓9󰀕󰀙󰀘9󰳒4-20 ϡ󰧠䕧󰜹⬉󰥟󰩠䋳䕑󱚙󰞉ϟⱘ󱬜⥛󱳆㒓

Fig.4-20 Efficiency curves under different input voltage and different load conditions

⬅󰳒4-20󰦞䰘󱔩EЁⱘ󱬜⥛󱭄󱥂㸼󰧃ⶹˈ⒵䕑󱯊ǃ85VAC㒓⬉󰥟䕧󰜹󱚙󰞉

53

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

ϟˈ󱮴ḹBoost PFCⱘ󱬜⥛󰧃䖒94%DŽ

4.43 󱮴ḹBoost PFCϢӴ㒳Boost PFC󱅲偠󱭄󱥂󱇍↨

Ўњ↨䕗њ󱮴ḹBoost PFCϢӴ㒳Boost PFC⬉䏃ⱘ󱗻㛑ˈ󱨁󱓎њϔϾӴ㒳

Boost PFC⬉䏃󱵓˄󰽖󰳒4-21󱠔⼎˅ˈӴ㒳Boost PFC⬉䏃󰧠ḋ䞛⫼њICE1PCS01㢃⠛󱥻󰠊ˈ⬉⌕䞛ḋгՓ⫼њ⬉⌕Ѧ󱛳󰰼ˈҹ䙓󰜡⬉䰏䞛ḋⱘ󱤳㗫󱇍󱬜⥛↨䕗ⱘ󱕅󰪡DŽ䰸њ⬉󱛳㒧󱵘Ϣ󱮴ḹBoost PFCϡ󰧠ҹ󰻪ˈ󰝊Ҫ󰜗ӊ󱅠󰜼Ⳍ󰧠DŽ

󰳒4-21 Ӵ㒳Boost PFC⬉䏃

Fig.4-21 The photo of conventional boost PFC

󱅲偠偠䆕њ󱮴ḹBoost PFC󰳼ϡ󱤳󰼅ӏԩ󱗻㛑ⱘ󱚙󰞉ϟⳌ󱇍Ѣ󱳝ḹBoost

PFC󱬜⥛󱳝󱠔󱦤催DŽ󱇸󰝊󰳼85V㒓⬉󰥟䕧󰜹ǃ300W⒵䕑䕧󰟎ⱘ󱚙󰞉ϟ󱬜⥛󱦤󰤛󰧃䖒1.3%DŽ㢹󱇚󱮴ḹ󱢧󱠥Փ⫼󰳼催󰡳⥛󱑨⫼󰴎󰧜ˈ󱬜⥛ⱘ󱦤󰤛󱰃Ⳍ󱔧󱯢󱰒ⱘDŽ䆺㒚ⱘ󱭄󱥂䆄󱔩䇋󰦖㗗䰘󱔩FDŽ

PF󰘐󱇍↨˖

&RQYHQWLRQDO󰀃%RRVW󰀃3)&󰀔󰀓󰀑󰀜󰀜3RZHU󰀃)DFWRU󰀓󰀑󰀜󰀛󰀓󰀑󰀜󰀚󰀓󰀑󰀜󰀙󰀓󰀑󰀜󰀘󰀛󰀘󰀔󰀓󰀓󰀔󰀔󰀘󰀔󰀖󰀓󰀔󰀗󰀘󰀔󰀙󰀓󰀔󰀚󰀘󰀔󰀜󰀓󰀕󰀓󰀘󰀕󰀕󰀓󰀕󰀖󰀘󰀕󰀘󰀓󰀕󰀙󰀘䕧󰜹㒓⬉󰥟󰀃󰀋9󰀌%ULGJHOHVV󰀃%RRVW󰀃3)&󰳒4-22 󱮴ḹBoost PFCϢӴ㒳Boost PFC󰡳⥛󰲴󱭄󱇍↨

Fig.4-22 Power Factor comparison of Bridgeless boost PFC and Bridge boost PFC

54

㄀󰲯ゴ󰷎ѢICE1PCS01ⱘ󱮴ḹBoost PFC⬉䏃䆒䅵󰦞󱅲偠㒧󱵰

⬅Ѣ󱮴ḹBoost PFC󰳼󱥻󰠊󱮍䴶ⱘ󰻡󱴖󱗻ˈ󱇸󰝊󱰃䞛⫼Ⳍ󱇍󰻡󱴖ⱘ⬉⌕Ѧ󱛳󰰼䞛ḋ󱮍󱓣Փ󱕫󰝊PF󰘐⿡󱖂ԢѢ󱳝ḹBoost PFC⬉䏃DŽϸ㗙⌟䆩󱯊󰴛󱥹󰜹EMIⒸ⊶󰰼ˈ󱠔ҹϞ䗄󱭄󱥂󰣙󱣀њX⬉󱆍ⱘ󱕅󰪡󰲴㋴DŽ󱬜⥛󱇍↨˖

&RQYHQWLRQDO󰀃%RRVW󰀃3)&%ULGJHOHVV󰀃%RRVW󰀃3)&󰀓󰀑󰀜󰀜󰀓󰀑󰀜󰀛󰀓󰀑󰀜󰀚󱬜⥛󰀓󰀑󰀜󰀙󰀓󰀑󰀜󰀘󰀓󰀑󰀜󰀗󰀓󰀑󰀜󰀖󰀓󰀑󰀜󰀕󰀛󰀘󰀔󰀓󰀓󰀔󰀔󰀘󰀔󰀖󰀓󰀔󰀗󰀘󰀔󰀙󰀓󰀔󰀚󰀘󰀔󰀜󰀓󰀕󰀓󰀘󰀕󰀕󰀓󰀕󰀖󰀘󰀕󰀘󰀓󰀕󰀙󰀘䕧󰜹㒓⬉󰥟󰀋9󰀌󰳒4-23 300W⒵䕑󱯊ϡ󰧠䕧󰜹⬉󰥟󱚙󰞉ϟⱘ󱬜⥛󱇍↨

Fig.4-23 Efficiency comparison under full load and different input voltages conditions

&RQYHQWLRQDO󰀃%RRVW󰀃3)&%ULGJHOHVV󰀃%RRVW󰀃3)&󰀓󰀑󰀜󰀚󰀓󰀑󰀜󰀙󰀓󰀑󰀜󰀘󱬜⥛󰀓󰀑󰀜󰀗󰀓󰀑󰀜󰀖󰀓󰀑󰀜󰀕󰀓󰀑󰀜󰀔󰀚󰀘󰀔󰀔󰀗󰀔󰀘󰀓󰀔󰀜󰀓󰀕󰀕󰀜䕧󰟎󰡳⥛󰀋:󰀌󰀕󰀙󰀛󰀖󰀓󰀘󰳒4-24 85VAC䕧󰜹󱯊ϡ󰧠䕧󰟎󰡳⥛󱚙󰞉ϟⱘ󱬜⥛󱇍↨

Fig.4-24 Efficiency comparison under 85VAC input and different load conditions

⬅󰳒4-24󰧃㾕󱮴ḹBoost PFC⬉䏃ⱘ󱬜⥛䕗Ӵ㒳Boost PFC󱭈ԧ󱬜⥛󱦤催㑺

1%DŽϡ䖛⬅󰳒4-23Ёϡ󰧠䕧󰜹㒓⬉󰥟󱚙󰞉ϟⱘ󱬜⥛󱳆㒓󰧃㾕ˈԢ󰥟䕧󰜹󱯊󱮴ḹBoost PFC⬉䏃ⱘ󱬜⥛󱦤󰤛䕗催ˈ㗠󰳼催󰥟䕧󰜹󱯊󱮴ḹBoost PFC⬉䏃󰩠Ӵ㒳

55

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

Boost PFC⬉䏃ⱘ󱬜⥛䍟󰧥ϔ㟈DŽ䖭󱰃⬅Ѣ󱮴ḹBoost PFCⳌ󱇍ѢӴ㒳Boost PFC󱬜⥛ϞⱘӬ󰢓󱅠󰜼󱰃󱇐䗮󱤳㗫ⱘ䰡Ԣˈ󱠔ҹ󰳼Ԣ󰥟䕧󰜹ⱘ󱚙󰞉ϟ󱮴ḹBoost PFC⬉䏃ⱘ󱬜⥛Ӭ󰢓󰤕󰟚󱯢󱰒DŽ󱔧䕧󰟎󰡳⥛ϡ󰦬ⱘ󱚙󰞉ϟˈ䱣ⴔ䕧󰜹⬉󰥟󰤛催ˈ󰦬󱤶󰰼ⱘ󱇐䗮󱤳㗫䰡Ԣˈϸ㗙ⱘ󱬜⥛䍟󰧥ϔ㟈DŽ󱅲䰙⬉䏃Ё䖬㽕㗗㰥󰠄󱮴ḹBoost PFC⬉䏃⺕󱗻󰜗ӊⱘ󱤳㗫Ӯ䍙䖛Ӵ㒳Boost PFC⬉䏃DŽ䖭󱰃󰲴Ў󱮴ḹBoost PFC⬉䏃Ёⱘ󰝅῵󱑆󱡄Ϲ䞡ˈ󱑆󱡄⬉⌕󰳼EMIⒸ⊶󰰼Ёѻ⫳ⱘ󱤳㗫䕗󰻻˄󱇚󰳼㄀󰝁ゴ䆺䗄˅DŽ㗠Ϩ󰟚ゟ󱮴ḹBoost PFC⬉䏃ЁӮ󰦥⫳PFC⬉󱛳Ϣ󱆘⫳⬉󱆍ⱘ䇤󱤃⦄䈵ˈ䖭⾡催乥䇤󱤃⬉⌕󰳼PFC⬉󱛳ҹ󰦞䕧󰜹Ⓒ⊶⺕󱗻󰜗ӊ󰝙ѻ⫳ⱘ⺕⒲󱤳㗫㽕↨Ӵ㒳Boost PFC⬉䏃󰻻ⱘ󰻮DŽ󱠔ҹӮ󰟎⦄催󰥟䕧󰜹󱯊ˈ󱮴ḹBoost PFC⬉䏃󰩠Ӵ㒳

Boost PFC⬉䏃ⱘ󱬜⥛󰞴Тϔ㟈ˈ⫮㟇⿡ԢDŽ󱠔ҹ󱮴ḹBoost PFC󱢧󱠥䗖⫼Ѣ󰻻󰡳⥛ⱘ󱑨⫼󰴎󰧜ˈ䖭ḋ󱠡㛑󰟌󱰒󰝊󱬜⥛Ӭ󰢓DŽ

56

㄀Ѩゴ󰟚ゟ⬉󱛳󱮴ḹBoost PFCⱘ䇤󱤃⦄䈵ⷨお

㄀Ѩゴ󰟚ゟ⬉󱛳󱮴ḹBoost PFCⱘ䇤󱤃⦄䈵ⷨお

󱴀󱭛󱅲偠ЁՓ⫼ⱘ󱮴ḹBoost PFC⬉䏃Ў󰟚ゟ⬉󱛳㒧󱵘󱢧󱠥ˈLǃN䕧󰜹↡㒓Ϟ󰴛󱥹󱳝400ȝHⱘPFC⬉󱛳DŽ䗮䖛󱅲偠󰦥⦄ˈ󱔧Ѹ⌕䕧󰜹ッ󱳾󱥹󰝅῵Ⓒ⊶󰰼󱯊ˈ

PFC⬉󱛳⬉⌕Ϟ󰦴󰡴њ󱯢󱰒ⱘ催乥ℷ󱓺󱤃㤵⬉⌕󰖵󰧋ˈ󱅲偠⊶󱔶󰽖󰳒5-1󱠔⼎DŽ㒣䖛󰻮⃵󱅲偠󰦞󰟚󱵤󰧃ҹ⹂󱅮䆹󱤃㤵󱰃󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃ⱘ󰳎󱳝⡍󱗻DŽ󱴀ゴ󱇚䗮䖛ㄝ󱬜⬉䏃⊩㒧󰧜ӓⳳ󱇍䆹⦄䈵䖯㸠󰟚󱵤󰩠ⷨおˈ󱑊䗮䖛󱅲偠偠䆕њ⧚䆎󰟚󱵤ⱘℷ⹂󱗻DŽ

󰳒5-1 ⬉󱛳⬉⌕Ϟ󰦴󰡴ⱘ催乥󱤃㤵󰖵󰧋⊶󱔶1˖⬉󱛳⬉⌕˗⊶󱔶2˖󱓔󰝇ㅵ偅󰡼󰖵󰧋Fig.5-1 High frequency resonance ripple of inductor current Waveform 1: Inductor current; Waveform 2: Driver signal

5.1 䇤󱤃⦄䈵ⱘ䅵ㅫ󱴎ӓⳳ󰦞󰟚󱵤

Ўњ偠䆕󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃Ёⱘ䇤󱤃⦄䈵⹂󱅲Ў䆹󱢧󱠥ⱘ󰳎󱳝⡍󱗻ˈ󰟽⫼SIMPLIS䕃ӊ󱇍⬉䏃䖯㸠ӓⳳDŽ㒣䖛ӓⳳ󰟚󱵤󰦥⦄󰤩㒃ⱘ󰟚ゟ⬉󱛳󱮴ḹ

Boost PFC⬉䏃󱰃󱑊ϡӮѻ⫳󱤃㤵ⱘDŽ㗗㰥󰠄󱅲䰙⬉䏃Ё󰧘⾡󱆘⫳󰦖󱭄ⱘ󱕅󰪡ˈ󰳼ӓⳳ⬉䏃󰳒䞠⏏󰡴њ㒓䏃󱇍󰴄ⱘ󱆘⫳⬉󱆍󰧢䞡⦄њ󱅲偠Ё󰦥⫳ⱘ䇤󱤃⦄䈵DŽӓⳳ⬉䏃󰽖󰳒5-2󱠔⼎ˈӓⳳ⬉䏃ЁC11ǃC12󰟚󰟿Ў䕧󰜹↡㒓LǃN󱇍󰴄ⱘ󱆘⫳⬉󱆍ˈ䆹⬉󱆍ⱘ󰻻󱇣󰦫󰠄䕧󰜹䆒󰻛㉏󰵟ǃ↡㒓㒧󱵘󰩠㒓䏃䭓󱑺ⱘ󱕅󰪡ˈӓⳳЁ䆒Ў

500pFDŽ󱥻󰠊ICЎICE1PCS01ˈ⬉⌕䞛ḋՓ⫼њ3.1㡖󱠔䗄ⱘ⬉⌕󱇐󰧥⊩󱴹󱦤催ӓⳳ䗳󱑺DŽCpЎMOSFETϢ󱬷⛁⠛П䯈ⱘ󱆘⫳⬉󱆍˄󱬷⛁⠛󱥹󰴄˅ˈ󰘐㑺Ў10pF̚

50pFDŽ󱔧PFC䕧󰟎󱥹⬉䰏䋳䕑󱯊ˈCBЎPFC⬉䏃󰡳⥛󰴄Ϣ󰻻󰴄П䯈ⱘ󱆘⫳⬉󱆍ˈ䆹󱆘⫳⬉󱆍ⱘ󰻻󱇣ϢPCBⱘ󱏗㒓󱳝󰝇ˈ󰘐㑺Ў󰞴ⱒpFDŽ󱔧PFC⬉䏃󰧢󱥹󰜹ⱘ󱰃

57

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

DC/DC⬉䏃ˈCBⱘ󰘐䳔㽕㗗㰥󰠄DC/DC㑻󰦬󰥟󰰼󰥳󰡃䖍󱆘⫳⬉󱆍ⱘ󱕅󰪡DŽ㗠Ϩϔ㠀DC/DC㑻󰦬󰥟󰰼󰥳ǃ󰡃䖍П䯈Ӯ󱥹󱳝1nF󱎺󰧇ⱘY⬉󱆍ˈ䖭Ӯ󰹲󰻻CBⱘㄝ󱬜⬉󱆍󰘐DŽ󰧢㓁ⱘ󰟚󱵤Ё㢹󱳾԰⡍⅞䇈󱯢ˈCB󱕫󰻻󱇣󰴛䆒󱅮Ў1nFDŽ

D2L1V2C10L2D3Q5R2R6C5R14Q1C7R7R4D5D6D4R12R9D1C3330uC1R10C12C11C8IC1ICE1PCS01GGNDGATEICOMPVCCISENSEVSENSER3C2R1C6FREQVCOMPR5C4Q2V1Q3R13󰳒5-2 󰟚ゟ⬉󱛳󱮴ḹBoost PFCӓⳳ⬉䏃˄󱮴󰝅῵Ⓒ⊶󰰼˅

Fig.5-2 Simulation circuit of Bridgeless Boost PFC with split inductors (without CM filter)

󰳒5-3 󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃ⱘӓⳳ⊶󱔶

Fig.5-3 Simulation results of Bridgeless Boost PFC with split inductors

ӓⳳ㒧󱵰󰽖󰳒5-3󱠔⼎ˈ⊶󱔶1Ў⬉󱛳⬉⌕⊶󱔶󱑊Ϣ󱅲偠㒧󱵰󱅠󰜼ヺ󰧜DŽ⬅ℸ󰘮󰟎󱥼󱮁󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃䇤󱤃󰜗ӊ󰣙󰧿󱳝㒓䏃󱇍󰴄П䯈ⱘ󱆘⫳⬉󱆍󰩠ϸϾPFC⬉󱛳DŽ㒣䖛󰟚󱵤ӓⳳ󰩠󱅲偠⬉䏃Ё䇤󱤃⬉⌕ⱘ䍄󰧥󰧃󱕫󰽖󰳒5-4󱠔⼎ⱘ䇤󱤃󰲲䏃⼎󱛣󰳒DŽ󰳒Ёⱘ⚍󰟦㒓ЎЏ㽕ⱘ䇤󱤃󰲲䏃ˈ㰮㒓Ў⃵㽕ⱘ䇤󱤃󰲲䏃DŽ

󰦖㗗󰳒5-4ˈ󰘛䆒ℸ󱯊VL>VNˈD2ǃQ2󱎹԰󰳼Boost⢊󱗕DŽQ1󱎹԰󰳼㓁⌕

Cs2Ў䕧󰜹↡㒓󱇍󰴄ⱘ󱆘⫳⬉󱆍DŽCp1ǃ⢊󱗕ˈ󰳒Ё󱇚Q1ㅔ󰣪ЎϔϾԧѠ󱵕ㅵDŽCs1ǃCp2󰟚󰟿Ў󱓔󰝇ㅵQ1ǃQ2ⓣ󱵕󱇍󰴄󱆘⫳⬉󱆍DŽCBЎPFC󰡳⥛󰴄Ϣ󰻻󰴄П䯈ⱘ󱆘

58

㄀Ѩゴ󰟚ゟ⬉󱛳󱮴ḹBoost PFCⱘ䇤󱤃⦄䈵ⷨお

⫳⬉󱆍DŽ⬅Ѣ󱏂῵⬉󱆍CXⱘ󱄬󰳼ˈAǃBϸ⚍󰳼催乥󰟚󱵤󱯊Ⳍ󱔧Ѣⷁ䏃DŽ

佪󰜜ˈ󰽖󰳒5-4a󱠔⼎ˈ󱔧Q2󱓔䗮󱯊䇤󱤃⬉⌕䗮䖛Cs1ǃCs2⬉󱆍󰧢ϔ䏃ҢL1⬉󱛳⌕䗮ˈ⬅Cp2󰩠CB䯁󰧜䇤󱤃󰲲䏃DŽ󰲴ЎCB󰳼󱅲䰙⬉䏃Ё㽕↨Cp2󰻻󱕜󰻮ˈ󱠔ҹ䇤󱤃⬉⌕Џ㽕䗮䖛CB󱔶󱟤󰲲䏃DŽ󰦺󰻪ϔ䏃䗮䖛L2⬉󱛳⌕䗮ˈ󰲴ЎQ1󰻘Ѣ㓁⌕⢊󱗕ˈ󱗑⬹󰝊󱕜󱇣ⱘ󱇐䗮⬉䰏ˈ󰧃ҹ䅸ЎC⚍󰩠E⚍󱰃䖲󱥹󰳼ϔ䍋ⱘDŽ󱠔ҹCp1󰩠CB󱅲䰙Ϟ󱰃󱑊㘨󰝇㋏DŽ󰧠⧚ˈ⬅Ѣ󱆍󰘐䕗󰻻CB󱟤Ў䇤󱤃⬉⌕ⱘЏ㽕䏃󱕘DŽ

󱔧Q2󰝇󱮁󱯊ˈ󰽖󰳒5-4b󱠔⼎ˈ⌕㒣⬉󱛳L1ⱘ䇤󱤃⬉⌕⬅ѢQ2ⱘ󰝇󱮁󱇚Ң

D2󰩠䕧󰟎⬉󱆍Co⌕䗮DŽ󰲴Ў䕧󰟎⬉󱆍Ⳍ󱔧󰻻ˈ󰳼䇤󱤃乥⥛㣗󰳈󰝙䰏󱡫󰧃ҹ󱗑⬹DŽ󱠔ҹ䇤󱤃䏃󱕘ⱘ󱬍󰦬ˈ󱇍䇤󱤃⢊󱗕ⱘ󱕅󰪡󱑊ϡ󰻻DŽ

CXCoCS2CP1RoCS1CXCoRoCS2CS1CP2CP1CP2CBCB(a) (b)

󰳒5-4 󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃䇤󱤃䏃󱕘⼎󱛣󰳒

(a)Q2󱓔䗮󱯊˗˄b˅Q2󰝇󱮁󱯊

Fig.5-4 Resonance path of Bridgeless Boost PFC with split inductors

(a) Q2 on time; (b) Q2 off time

CXCXCoCs1Cs2CBCp1Cp2Cs1Cs2CBCp1Cp2˄a˅ ˄b˅

󰳒5-5 䇤󱤃䏃󱕘ㅔ󰣪󰳒ĉ(a)Q2󱓔䗮󱯊˗˄b˅Q2󰝇󱮁󱯊

Fig.5-5 Simplification circuit of resonance loop ĉ

(a) Q2 on time; (b) Q2 off time

䗮䖛Ϟ䗄󰟚󱵤󰧃ⶹˈ⬉󱛳⬉⌕Ϟ󰦴󰡴ⱘ䇤󱤃⬉⌕Џ㽕󱰃⬅ϸ䕧󰜹↡㒓󱇍󰴄󱆘

59

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

⫳⬉󱆍Cs1ϢCs2ǃPFC⬉䏃󰡳⥛󰴄󱇍󰻻󰴄ⱘ󱆘⫳⬉󱆍CB󰩠󰟚ゟѢ↡㒓ϞⱘϸϾ

PFC⬉󱛳󱵘󱟤ⱘLC󰲲䏃󱠔󱓩䍋DŽ㱑✊󰳼󱓔󰝇ㅵ󰝇󱮁󰩠󱓔䗮󱳳䯈䚼󰟚䇤󱤃䏃󱕘Ӯ󱬍󰦬ˈԚҢ󱳔㒜󱬜󱵰Ϟ󱴹䇈󱑊≵󱳝󰤎󰟿DŽ󰳒5-5Ў䇤󱤃䏃󱕘ⱘㅔ󰣪󰳒ĉˈ⬅󰳒󰧃㾕󰳼䇤󱤃䏃󱕘Ё󱔧󱗑⬹Q2ⱘ󱇐䗮󰥟䰡󰩠䕧󰟎󰻻⬉󱆍Coⱘ催乥䰏󱡫󱯊ˈ⬉󱆍CBǃ

Cp1󰩠Cp2Ў󱑊㘨󰝇㋏DŽ䕧󰜹↡㒓󱇍󰴄󱆘⫳⬉󱆍Cs1󰩠Cs2ҹ󰦞ϸϾPFC⬉󱛳гЎ󱑊㘨󰝇㋏DŽ⬅ℸ󰧃󱕫䖯ϔℹㅔ󰣪ⱘ⬉䏃󰽖󰳒5-6󱠔⼎DŽ

LpLCL2CMCB󰀎Cp1󰀎Cp2Cs1Cs2CBCp1Cp2Cs1󰀎Cs2˄a˅

󰳒5-6 䇤󱤃䏃󱕘ㅔ󰣪󰳒Ċ

˄b˅

Fig.5-6 Simplification circuit of resonance loop Ċ

󰽖󰳒5-6b󱠔⼎ˈ䇤󱤃⬉󱛳Lp󱰃PFC⬉󱛳ⱘ󱑊㘨ˈ󰘐Ў󰥳󱴹ⱘϔ󰤞DŽCLЎCs1

󰩠Cs2ⱘ󱑊㘨DŽCMЎCBǃCp1󰩠Cp2ⱘ󱑊㘨DŽ󰧃ҹ䅵ㅫ󰟎䇤󱤃乥⥛󰽖ϟ˖

fo

12󰂘S󰂘Lp󰂘(CL󰂘CM)CL󰀎CM˄5.1˅

󰧠󱯊ḍ󱥂󰟚󱵤󰧃ⶹˈ䇤󱤃⬉⌕ⱘ䏃󱕘Ϣ󰝅῵⬉⌕ⱘ䏃󱕘ϔḋDŽ󱅲䰙Ϟ䇤󱤃⬉⌕г󱈲Ѣ󰝅῵⬉⌕DŽ󱠔ҹ䕧󰜹↡㒓ⱘ󰝅῵Ⓒ⊶󰰼󰧃ҹ󱯢󱰒󱡥󰠊䖭⾡䇤󱤃⦄䈵DŽ㟇Ѣ䖭⾡䇤󱤃⦄䈵󱰃󰧺Ӯ󱓩䍋EMI⌟䆩㒧󱵰ⱘ󱙊󰣪ˈ䳔㽕ⳟ䇤󱤃乥⥛ⱘ㣗󰳈󱰃󰧺󰳼Ӵ󱇐EMI⌟䆩㣗󰳈󰝙ˈ󰥇150KHz̚30MHzDŽ󱅲䰙Ϟ䕧󰜹↡㒓󱥹󰜹󰝅῵Ⓒ⊶󰰼󰧢ˈ⬅Ѣ䕗󰻻ⱘ󰝅῵⬉󱛳г󰦖Ϣ󰠄䇤󱤃䏃󱕘Ёˈ󱇐㟈䇤󱤃乥⥛ϔ㠀䛑ϡӮ䍙䖛

150KHzDŽ

60

㄀Ѩゴ󰟚ゟ⬉󱛳󱮴ḹBoost PFCⱘ䇤󱤃⦄䈵ⷨお

5.2 䇤󱤃⦄䈵⧚䆎󰟚󱵤ⱘ󱅲偠偠䆕

䗮䖛Ϟ㡖󰟚󱵤󰧃ⶹˈϸ䕧󰜹↡㒓󱇍󰴄󱆘⫳⬉󱆍Cs1󰩠Cs2ǃPFC⬉䏃󰡳⥛󰴄󱇍󰻻󰴄ⱘ󱆘⫳⬉󱆍CB󰩠󰟚ゟѢ↡㒓ϞⱘϸϾPFC⬉󱛳󱵘󱟤ⱘLC󰲲䏃䇤󱤃󱰃󱇐㟈󰟚ゟ⬉󱛳󱮴ḹBoost PFC󱢧󱠥⬉󱛳⬉⌕󰦴󰡴󱳝催乥󱤃㤵⬉⌕ⱘ󰥳󰲴DŽ󱓣5.1㒭󰟎њ䇤󱤃󰲲䏃󱤃㤵乥⥛ⱘㅫ󱓣DŽЎњ䗮䖛󱅲偠偠䆕Ϟ䗄󰟚󱵤ⱘℷ⹂󱗻ˈ󱨁󱓎њ󰽖󰳒5-7󱠔⼎ⱘ󱅲偠偠䆕⬉䏃DŽ

CXRoCs1Cs2InCB󰳒5-7 󰟚ゟ⬉󱛳󱮴ḹPFC䇤󱤃󱅲偠⬉䏃

Fig.5-7 Resonance test setup of Bridgeless Boost PFC with split inductors

䕧󰜹ッ󱥹󰜹󰝅῵⬉󱛳T1ˈA⚍ϢB⚍ǃC⚍󰩠D⚍П䯈ⱘ㒓㓚󱈑䞣ⷁDŽⳂⱘ󱰃Ўњ䙓󰜡䕧󰜹↡㒓ⱘ󱆘⫳󰦖󱭄󱇍󱅲偠ⱘ󱕅󰪡DŽ󰳼LǃN䕧󰜹↡㒓Ϟ󱥹󰜹ㄝ󰘐ⱘCs1󰩠Cs2󱴹῵󱢳󱆘⫳⬉󱆍󰦖󱭄DŽCB󱥹Ѣ󱮴ḹBoost PFCⱘ󰡳⥛󰴄󱴹῵󱢳䆹󰻘ⱘ󱆘⫳⬉󱆍󰦖󱭄DŽ⬅Ѣ䇤󱤃⦃䏃ⱘ󱔶󱟤Ϣ󱅲䰙ⱘ󱥹󰴄⚍󱑊󱮴󰝇㋏ˈ󱠔ҹ󱥹󰴄⚍Eг󰧃󱚀ぎDŽ⬅󰠡䗄䆎䆕󰩠󱅲偠⊶󱔶㾖󱆳󰧃ⶹˈPFC⬉󱛳⬉⌕Ϟ󰦴󰡴ⱘ䇤󱤃⬉⌕󰥇Ў䗮䖛󱆘⫳⬉󱆍󰲲䏃ⱘ䇤󱤃⬉⌕ˈ󰟭󱅲偠ЁՓ⫼⬉⌕󱥶󰼈⌟󱕫󰳒5-7Ёⱘ⬉⌕Inˈ䗮䖛↨䕗󱅲䰙In⊶󱔶󰩠ӓⳳ⊶󱔶ҹ󰦞󱅗Ӏⱘ䇤󱤃乥⥛󱰃󰧺󰨏󰧜󰥇󰧃偠䆕Ϟ䗄㒧䆎ⱘℷ⹂󱗻DŽ󱅲偠⌟䆩њ㸼5-1Ё󰻮㒘⬉󱆍ⱘ󱨁䜡DŽ⬅Ѣ㆛󱐙󱠔䰤ˈҙ󰳼㸼5-2Ё㒭󰟎2⾡󱨁䜡ⱘ䆺㒚㒧󱵰DŽ

㸼 5-1 䇤󱤃󱅲偠⬉󱆍󱨁䜡㸼Table 5-1 Caps list for resonance test

Cs1&Cs2CB

1nF 10nF

0.22nF 1.5nF 2.2nF ¥¥

¥¥

¥

4.7nF ¥

¥ × 61

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛㸼5-2 䇤󱤃󱅲偠Ϣӓⳳ㒧󱵰󱇍↨

Table 5-2 Comparison of resonance experiments and simulation results

1ǃCBЎ1nFˈCs1&Cs2󰦪4.7nFDŽ䅵ㅫ乥⥛Ў˖375.1kHz

(a) ⬉⌕Inⱘ󱅲偠⊶󱔶˗乥⥛˖380.7kHz(b) ⬉⌕Inⱘӓⳳ⊶󱔶˗乥⥛˖373.1kHz

2ǃCBЎ10nFˈCs1&Cs2󰦪0.22nFDŽ䅵ㅫ乥⥛Ў˖536.5kHz

(c) ⬉⌕Inⱘ󱅲偠⊶󱔶˗乥⥛˖545.4kHz(d) ⬉⌕Inⱘӓⳳ⊶󱔶˗乥⥛˖552.3kHz

󱅠󱭈ⱘ⌟䆩󱭄󱥂󰟫Ѣ㸼5-3˖

㸼5-3 䇤󱤃󱅲偠󱅠󱭈󱭄󱥂㸼

Table 5-3 Test records of resonance experiment

CB

乍Ⳃ

䅵ㅫ乥⥛

Cs1&Cs1

0.22nF 1.5nF 2.2nF 4.7nF 643.8 kHz 635.3 kHz 629.7 kHz

410.9 kHz 408.9 kHz 401.0 kHz

394.2 kHz 388.0 kHz 410.5 kHz

375.1 kHz 373.1 kHz 380.7 kHz

1nF ӓⳳ㒧󱵰 󱅲偠㒧󱵰

䅵ㅫ乥⥛ 536.5 kHz 234.7 kHz 203.8 kHz ---------

10nF

ӓⳳ㒧󱵰 552.3 kHz 233.8 kHz 204.1 kHz --------- 󱅲偠㒧󱵰 545.2 kHz 223.6 kHz 202.7 kHz ---------

62

㄀Ѩゴ󰟚ゟ⬉󱛳󱮴ḹBoost PFCⱘ䇤󱤃⦄䈵ⷨお

󱅲偠⌟䆩Ё䱣ⴔCBǃCs1󰩠Cs1ⱘ󰹲󰡴ˈ䇤󱤃⬉⌕󱐙󰘐䖙䗳󰹲󰻻DŽ󱔧CBЎ10nFˈ

Cs1󰩠Cs1Ў4.7nF󱯊ˈ䇤󱤃⬉⌕󱕅󰪡њ⬉䏃ⱘℷ󱐌󱎹԰ˈ󱬙󱳾䆄󱔩󱭄󱥂DŽ

⬅㸼5-3󰧃㾕󱅲偠㒧󱵰ǃ⧚䆎󰟚󱵤ҹ󰦞ӓⳳ󱠔󱕫󰠄ⱘ䇤󱤃⊶󱔶󰩠乥⥛󰴛󰨏󰧜ˈ󰧃ҹ䆕󱯢󰠡䗄䇤󱤃䏃󱕘󰦞䇤󱤃乥⥛󰟚󱵤㒧䆎󱰃ℷ⹂ⱘDŽ䆕󱯢њ䖭⾡LC䇤󱤃⦄䈵󱰃󰟚ゟ⬉󱛳󱮴ḹBoost PFC󱢧󱠥󱠔󱓩䍋ⱘˈ󱰃ϔ⾡󰳎󱳝ⱘ⡍󱗻DŽ䗮䖛󰳼䕧󰜹ջ󱅝㺙󰝅῵Ⓒ⊶󰰼󰥇󰧃󱯢󱰒ⱘ󱡥󰠊䇤󱤃⬉⌕DŽ

5.3 PFC⬉󱛳䜡㕂󱇍䇤󱤃󱴵ӊⱘ󱕅󰪡

󱮴ḹBoost PFC⬉䏃󰳼⧚䆎Ϟ䖬󰧃ҹՓ⫼󰦺󰻪ϸ⾡ϡ󰧠ⱘ⬉󱛳䜡㕂󱮍⊩DŽ󰽖󰳒5-8󱠔⼎ⱘ󰤩Ͼ⬉󱛳䜡㕂󰩠㗺󰧜⬉󱛳䜡㕂󱮴ḹBoost PFC⬉䏃DŽԚ󱮴ḹBoost

PFC⬉䏃ѻ⫳䇤󱤃⬉⌕ⱘ󱴵ӊЎPFC⬉󱛳󰟚ゟ󰳼LǃN䕧󰜹↡㒓ϞDŽ󱴀㡖󱇚󰟚󱵤󰝊󱅗ϸ⾡⬉󱛳䜡㕂󱮍󱓣ϡӮѻ⫳䇤󱤃ⱘ󰥳󰲴DŽ

(a) (b)

󰳒5-8 ϡ󰧠⬉󱛳䜡㕂ⱘ󱮴ḹBoost PFC⬉䏃(a) 󰤩Ͼ⬉󱛳䜡㕂㒧󱵘; (b) 㗺󰧜⬉󱛳䜡㕂㒧󱵘

Fig.5-8 Different inductor configurations of Bridgeless Boost PFC (a) Single inductor configuration; (b) Coupler inductor configuration

ḍ󱥂Ϟ㡖ㄝ󱬜⬉䏃ⱘ󰟚󱵤󱮍⊩ˈ󰤩Ͼ⬉󱛳䜡㕂󰩠㗺󰧜⬉󱛳䜡㕂󱮴ḹBoost PFC⬉䏃ⱘㄝ󱬜⬉䏃󰽖󰳒5-9󱠔⼎DŽ

⬅󰳒5-9a󰧃㾕ˈ󰤩Ͼ⬉󱛳䜡㕂㒧󱵘Ё⣀ゟⱘ⬉󱛳L1󰳼䇤󱤃ㄝ󱬜⬉䏃Ё󰻘Ѣ㹿ⷁ䏃⢊󱗕ˈϡ󱄬󰳼LC䇤󱤃󱴵ӊЁⱘ⬉󱛳󰜗ӊˈ󱠔ҹ䆹⾡䜡㕂㒧󱵘ϡӮ󰟎⦄䇤󱤃⦄䈵DŽ䖭г󱰃Ӵ㒳PFC⬉䏃ϡӮ󰲴Ў󱆘⫳󰜗ӊѻ⫳䇤󱤃ⱘ󰥳󰲴DŽ󰲴ЎӴ㒳PFC󱢧󱠥ⱘㄝ󱬜⬉䏃ЁPFC󰡳⥛󰴄䗮䖛󱭈⌕ḹⳈ󱥹䖲󱥹䕧󰜹↡㒓ˈ󰳼催乥ㄝ󱬜῵󰵟ЁⳌ󱔧Ѣ󱡞⬉󱛳ⷁ䏃ˈгϡ󱄬󰳼䇤󱤃󱴵ӊDŽ󰳒5-9bЁ㗺󰧜⬉󱛳䜡㕂ⱘ󱮴ḹBoost PFC⬉䏃гϡӮ󰦥⫳䇤󱤃⦄䈵ˈ󰥳󰲴󰳼Ѣ㗺󰧜⬉󱛳Lⱘ⡍⅞㒧󱵘󱇍Ѣ󰧠󱮍󰧥⌕󰜹ⱘ㉏Ԑ󰝅῵󰖵󰧋ⱘ⬉⌕󰨜⦄󱮴󱛳󱡫⡍󱗻˄䆺㾕㄀󰝁ゴ󰟚󱵤˅DŽ󱠔ҹ󰳒5-9bЁⱘ⬉䏃гϡ󱄬󰳼LC䇤󱤃Ёⱘ⬉󱛳󱴵ӊDŽϡ䖛󱅲䰙⬉䏃Ё㗺󰧜⬉󱛳ⱘ㗺󰧜㋏󱭄󱇣Ѣ1ˈϸ

63

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

Ͼ㒩㒘󰴛󱳝ⓣ󱛳󱄬󰳼ˈⓣ󱛳г󰧃ҹ󰩠󱆘⫳⬉󱆍󱵘󱟤䇤󱤃⬉䏃DŽ󱠔ҹ󰳼㗺󰧜⬉󱛳ⱘ󱅲偠Ёҡ✊󰧃ҹ㾖󱆳󰠄䕏󱖂ⱘ催乥䇤󱤃⬉⌕㒍⊶ⱘ󱄬󰳼DŽ

Cs1Cs2CBCp1Cp2Cs1Cs2CBCp1Cp2(a) (b) 󰳒5-9 ϡ󰧠⬉󱛳䜡㕂ⱘ󱮴ḹBoost PFC⬉䏃ㄝ󱬜⬉䏃(a) 󰤩Ͼ⬉󱛳䜡㕂㒧󱵘˗ (b) 㗺󰧜⬉󱛳䜡㕂㒧󱵘

Fig.5-9 Equivalent circuits for different inductor configuration topologies (a) Single inductor configuration; (b) Coupler inductor configuration

5.4 󱴀ゴ󱇣㒧

㒣󱴀ゴ󰟚󱵤ˈ󱇚󰟚ゟ⬉󱛳㒧󱵘ⱘ󱮴ḹBoost PFC䇤󱤃⦄䈵ⱘ⡍⚍󱘏㒧󰽖ϟ˖

1ǃPFC⬉󱛳㒧󱵘ⱘ䜡㕂󱰃䇤󱤃ѻ⫳ⱘ󰝇䬂󱴵ӊDŽPFC⬉󱛳󱖙乏⣀ゟԡѢLǃN㒓

Ϟ󱠡㛑󱵘󱟤LC䇤󱤃DŽ󱮴䆎󱰃󰤩Ͼ⬉󱛳ԡѢϔ󱴵↡㒓Ϟˈ䖬󱰃㗺󰧜ⱘ⬉󱛳ԡѢϸ󱴵↡㒓Ϟ󰴛ϡӮ󱵘󱟤󱤃㤵DŽԚ󱰃󰽖󱵰㗺󰧜⬉󱛳ⱘⓣ󱛳䖛󰻻ˈ󰳼⬉󱛳⬉⌕⊶󱔶Ϟг㛑󰻳㾖󱆳󰠄ϔ󱅮ⱘ䇤󱤃⦄䈵DŽ

2ǃ䇤󱤃󰲲䏃ⱘЏ㽕󰜗ӊ󰣙󱣀䕧󰜹↡㒓󱇍󰴄ⱘ󱆘⫳⬉󱆍ǃPFC⬉䏃󰡳⥛󰴄󱇍󰻻󰴄

ⱘ󱆘⫳⬉󱆍󰩠󰟚ゟѢ䕧󰜹↡㒓ϞⱘPFC⬉󱛳DŽⳌ󱇍Ѣ󱓔󰝇ㅵⓣ󱵕󱇍󰴄ⱘ󱆘⫳⬉󱆍󱴹䇈ˈPFC⬉䏃󰡳⥛󰴄ⱘ󱆘⫳⬉󱆍䕗󰻻ˈ󱰃󱳈ЎЏ㽕ⱘ䇤󱤃䏃󱕘DŽ󰲴Ў䇤󱤃⬉⌕󰳼EMI󰰾󰻄Ё󱈲Ѣ󰝅῵⬉⌕󰖵󰧋ˈ󰳼䕧󰜹ջ䴴䖥⬉󱛳󱅝㺙󰝅῵Ⓒ⊶󰰼󱇚󱰒㨫䰡Ԣ䇤󱤃⦄䈵DŽ

3ǃ䇤󱤃Փ󱕫󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃Ё⺕󱗻󰜗ӊⱘ󱤳㗫󱯢󱰒󰹲󰡴DŽ󱅲偠Ё󱮴

ḹBoost PFC⬉䏃ⱘ󰝅῵Ⓒ⊶⬉󱛳󰩠PFC⬉󱛳⏽󱑺󱯢󱰒↨󰧠ㄝ󰡳⥛ㄝ㑻󱎹԰ϟⱘӴ㒳Boost PFC㽕催DŽ䖭⾡󱤳㗫Ӯ󱇐㟈󰳼催󰥟䕧󰜹󱚙󰞉ϟ󱮴ḹBoost PFC⬉䏃ⱘ󱬜⥛ԢѢӴ㒳Boost PFC⬉䏃DŽ

4ǃ⬅Ѣ󱥻󰠊⬉䏃Փ⫼⬉䰏󱟪㗙⬉⌕Ѧ󱛳󰰼䞛ḋ⬉󱛳⬉⌕󱴹󱥻󰠊󱮴ḹBoost PFC

⬉䏃DŽ䇤󱤃ѻ⫳ⱘ䇤󱤃⬉⌕䖒󰠄ϔ󱅮󱐙󰘐󰧢Ӯ󱇍󱥻󰠊⬉䏃󱠔䳔ⱘ䞛ḋ󰖵󰧋ѻ󱠔ҹ󰟚ゟ⬉󱛳󱮴ḹBoost PFC⫳󱕅󰪡ˈՓ󱮴ḹBoost PFC⬉䏃󰦥⫳ϡ〇󱅮⦄䈵DŽ⬉䏃󱅲偠Ё󱖙乏󱅝㺙䕧󰜹󰝅῵Ⓒ⊶󰰼DŽ

64

㄀󰝁ゴ󱮴ḹBoost PFC⬉䏃⬉⺕󱑆󱡄⡍󱗻ⷨお

㄀󰝁ゴ󱮴ḹBoost PFC⬉䏃⬉⺕󱑆󱡄⡍󱗻ⷨお

󱮴ḹBoost PFC󱢧󱠥󰳼󱬜⥛󱮍䴶ⱘ󱦤󰤛Փ󰝊Ⳍ󱇍ѢӴ㒳Boost PFC󱟤Ў󱳈󰧜䗖催󰡳⥛󱑨⫼󰴎󰧜ϟⱘPFC󱢧󱠥㒧󱵘DŽ󰤩󰨼󱳳󱥻󰠊PFC㢃⠛ⱘ󱑨⫼г㾷󰞇њ󱮴ḹBoost PFC⬉䏃󱥻󰠊󰻡󱴖ⱘ䯂乬DŽԚ󱰃⬅Ѣ䰸󰦏њ󱭈⌕ḹˈPFC⬉󱛳󰦜ԡѢ䕧󰜹↡㒓Ϟˈ䖭⾡⡍⅞ⱘ㒧󱵘󱄬󰳼ⴔ󱯢󱰒ⱘEMI䯂乬DŽ󰳒6-1ЎՓ⫼Ⳍ󰧠ⱘEMIⒸ⊶󰰼ǃⳌ󰧠ⱘ󱥻󰠊㢃⠛󰦞Ⳍ󰧠ⱘ⌟䆩󱴵ӊϟ󱮴ḹBoost PFC⬉䏃󰩠Ӵ㒳Boost

PFC⬉䏃ⱘӴ󱇐EMI⌟䆩㒧󱵰󱇍↨DŽ

󰳒6-1 󱮴ḹBoost PFC⬉䏃ϢӴ㒳Boost PFC⬉䏃ⱘEMI㒧󱵰󱇍↨

Fig.6-1 EMI test results comparison between Bridgeless Boost PFC and Conventional Boost PFC

⬅ѢEMIⒸ⊶󰰼ⱘ催乥󱗻㛑󱳾󰘮Ӭ󰣪ˈϸ㗙ⱘ催乥䚼󰟚󰴛䍙󱷛DŽ󱕜󱯢󱰒󱮴ḹ

Boost PFC⬉䏃ⱘӴ󱇐EMI㽕↨Ӵ㒳Boost PFC⬉䏃󰻻ⱘ󰻮DŽ󱴀ゴ佪󰜜ҟ㒡EMIⱘ󰷎󱴀ὖ󱗉󰝡䗮䖛ㄝ󱬜⬉䏃󱮍⊩󰟚󱵤Ӵ㒳Boost PFC⬉䏃󰩠󱮴ḹBoost PFC⬉䏃Ӵ󱇐EMI⡍󱗻ⱘ󱏂󱓖DŽ

6.1 Ӵ󱇐EMIⱘ󱅮Нǃ⌟䆩󱮍⊩󰦞󱷛󰞚

⬉⇨䆒󰻛ⱘ⬉⺕󱑆󱡄Џ㽕󱳝ϸϾӴ󱪁䗨󱕘˖Ӵ󱇐󰩠䕤󱇘DŽӴ󱇐󱑆󱡄˄Conducted

Interference˅󱰃󱣛䚼󰟚󱑆󱡄󰖵󰧋䗮䖛󰻪䚼⬉㓚㒓ǃ⬉⑤㒓ǃI/O󱥹󰦷ㄝ䏃󱕘Ӵ䗕󰟎󰦏ⱘ⬉⺕󱑆󱡄DŽ䕤󱇘󱑆󱡄˄Radiated Interference˅󱰃䗮䖛ぎ䯈󱑊ҹ⬉⺕⊶ⱘ⡍󱗻󰩠㾘󱕟Ӵ󱪁󰟎󰦏ⱘ⬉⺕󱑆󱡄DŽ󰳼󱮴ḹBoost PFC⬉䏃⬉⺕󱑆󱡄⡍󱗻ⷨおЁ󰦾㗗㰥Ӵ󱇐EMI䚼󰟚DŽӴ󱇐EMI󰧃ҹ󰟚󱟤ϸ㉏˖󱏂῵󱑆󱡄˄Differential Mode˗DM˅󰩠󰝅῵󱑆󱡄˄Common Mode˗CM˅DŽ󱏂῵󱑆󱡄󱰃󱄬󰳼Ѣϸ䕧󰜹↡㒓Line󰩠NeutralП䯈ⱘ󱑆󱡄󰖵󰧋ˈ㗠󰝅῵󱑆󱡄ЎLine󰩠Neutralϸ↡㒓Ⳍ󱇍󰴄㒓GroundП䯈ⱘ󱑆󱡄󰖵󰧋DŽ󱏂῵󱑆󱡄Џ㽕⬅⬉⑤⬉䏃󰟱㑻ッⱘ䴲䖲㓁󱗻⬉⌕󰦞䕧󰜹ッⒸ⊶󰻻⬉󱆍Ϟ

65

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

ⱘ󱆘⫳⬉䰏󰩠⬉󱛳󱠔䗴󱟤DŽ󰝅῵󱑆󱡄Џ㽕⬅MOSFETǃ󱖿䗳Ѡ󱵕ㅵ󰦞催乥󰦬󰥟󰰼ⱘ󱆘⫳⬉󱆍󰩠󱴖󱬷⬉󱆍󱠔䗴󱟤DŽ

Ӵ󱇐EMIⱘ⌟䆩乥↉󰳼150KHz̚30MHzП䯈ˈ⌟䆩󱮍⊩󰽖󰳒6-2󱠔⼎ˈ󰝊ЁLISN⿄԰㒓䏃Ӵ䕧䰏󱡫〇󱅮㔥㒰ˈ󱰃Ӵ󱇐EMI⌟䞣ⱘ䞡㽕󱎹󰝋DŽ󰝅῵󰩠󱏂῵⬉⌕󰖵󰧋󰳼LISNЁⱘ50ȍ⬉䰏Ϟѻ⫳ⱘ󰰾󰻄⬉󰥟㹿䗕󱕔乥䈅󰟚󱵤Ҿˈ㒣䖛󰟚󱵤㒭󰟎󰰾󰻄󰖵󰧋ⱘ⌟䞣㒧󱵰󱑊Ϣ󱠻㸠󱷛󰞚󱇍✻DŽ

󰳒6-2 Ӵ󱇐EMIⱘ⌟䆩󱮍⊩Fig.6-2 Conducted EMI test setup

Ⳃ󰠡󰳑䰙ϞЏ㽕ⱘ⬉⺕󰝐󱆍󱗻󱷛󰞚Ў㕢󰳑ⱘ㘨󰧜䗮󰖵󰾨󰨬Ӯ乕󱏗ⱘFCC˄IEC˅󰦥󱏗ⱘCISPR㋏󰟫󱷛󰞚DŽ㸼6-1󰟫󰟎CISPR Part-15󱷛󰞚󰦞󰳑䰙⬉󱎹󰾨󰨬Ӯ

22󱷛󰞚󱇍⬉⺕󱑆󱡄ⱘ䰤󰠊󰘐DŽ

㸼6-1 CISPR 22ⱘӴ󱇐󰰾󰻄󱆍䰤󰘐Table 6-1 CISPR 22 conducted emission limits

乥⥛㣗󰳈

A㑻 B㑻

QP󰘐(ȝV)AV󰘐(ȝV)QP󰘐(ȝV)AV󰘐(ȝV)79dB 66dB 66-56dB 56-46dB

150k-500kHz

500k-5MHz 73dB 60dB 56dB 46dB 5M-30MHz 73dB 60dB 60dB 50dB 󱴀󱭛䖯㸠ⱘ⌟䆩Ё䞛⫼њCISPR 22󱅮Нⱘ󱷛󰞚DŽ󱑊󰳼󰝊󰷎⸔Ϟ󰹲󰡴њ6Ͼ

dBⱘ㺩䞣˄㾕󰳒6-1Ёⱘ󱷛󰞚󱳆㒓˅DŽ

6.2 Ӵ󱇐EMIⱘ䅵ㅫ󱴎ӓⳳ

6.2.1 Ӵ󱇐EMIӓⳳὖ䗄

䅵ㅫ󱴎ӓⳳ󱡔󱴃󱏆㒣󱟤Ў⬉⑤䆒䅵Ёⱘ䞡㽕󱎹󰝋ˈⳂ󰠡⬉䏃ӓⳳ䕃ӊⱘ⊶󱔶

66

㄀󰝁ゴ󱮴ḹBoost PFC⬉䏃⬉⺕󱑆󱡄⡍󱗻ⷨお

㒧󱵰󰳼㊒⹂ⱘӓⳳ῵󰵟ⱘ󱬃󱣕ϟ󱏆㒣Ⳍ󱔧󱥹䖥󱅲䰙DŽӓⳳ䕃ӊϡҙ󰧃ҹ󱇍⬉䏃ⱘ󱎹԰⢊󱗕󰩠㒚㡖⊶󱔶䖯㸠ӓⳳDŽ󰟽⫼ӓⳳ䕃ӊЁ󱦤կⱘ󰙙ゟ󰧊(Fourier)󰟚󱵤󰡳㛑󰧠ḋ󰧃ҹ󱇍⬉䏃ⱘӴ󱇐EMI⡍󱗻䖯㸠䆘ԄDŽԚ󱰃Ⳃ󰠡EMIӓⳳⱘ󰞚⹂󱗻󱑊ϡ催ˈӓⳳ㒧󱵰󰩠󱅲偠⌟䆩㒧󱵰ⱘ󰨏󰧜⿟󱑺󱑊ϡ⧚󱛇DŽEMIӓⳳⱘ󰞚⹂⿟󱑺Џ㽕󰦫󰠄ҹϟϸϾ󱮍䴶ⱘ䰤󰠊˖

1ǃEMIӓⳳ῵󰵟ⱘ㊒⹂󱑺

󰷎󱴀⬉䏃ӓⳳЁⱘ󰜗ӊ῵󰵟󱏆㒣󰧃ҹ䆺㒚ǃ󱥹䖥ⳳ󱅲ⱘ󰦡󱯴󱅲䰙⬉䏃Ё󰜗ӊ󰳼Ԣ乥㣗󰳈󰝙ⱘ⬉⇨⡍󱗻DŽԚ󱰃Ӵ󱇐EMIӓⳳⱘ乥⥛㣗󰳈Ў150KHz̚30MHzˈ󰳼䖭Ͼ乥⥛㣗󰳈󰝙ˈ⬉䏃Ёⱘ󰜗ӊǃ󱇐㒓󰩠㒧󱵘󱑊ϡ󱰃󱱂䗮󰟚󱵤ЁՓ⫼ⱘㅔ󰤩῵󰵟󰧃ҹ῵󱢳ⱘDŽ󰜗ӊⱘ󱕜󰻮󱆘⫳󰦖󱭄󰩠䴲㒓󱗻⡍󱗻䳔㽕㒣䖛󰻡󱴖ⱘ󱓎῵䖛⿟󱠡㛑㦋󱕫󰧜䗖ⱘ῵󰵟DŽ󰳼催乥㣗󰳈󰝙Џ㽕󱰃󰜗ӊⱘ󱆘⫳⬉󱆍ǃ⬉󱛳ㄝ䍋󰠄Џ㽕԰⫼ˈ󱠔ҹEMIӓⳳ㒧󱵰催乥䚼󰟚ⱘ󰞚⹂󱗻ձ䌪Ѣӓⳳ῵󰵟󰳼催乥㣗󰳈󰝙ⱘ䰏󱡫⡍󱗻ⱘ㊒⹂󱑺DŽ㗠Ϩ󱅲䰙⬉䏃ЁPCB󱏗㒓ǃ󰜗ӊԡ㕂ㄝ󱕅󰪡󰲴㋴Ⳃ󰠡󱕜䲒󰳼䅵ㅫ󱴎Ё󱢹󱳝󰧜䗖ⱘ῵󱢳󱮍⊩ˈ䖭г󱰃EMIӓⳳ㒧󱵰Ϣ󱅲䰙⌟䆩㒧󱵰󰨏󰧜󱑺ϡ催ⱘ󰥳󰲴DŽ

2ǃ䅵ㅫ󱴎ӓⳳ䗳󱑺

ӓⳳ῵󰵟ⱘ㊒⹂󱑺󰧃ҹ䗮䖛󰟚󱵤ǃ󱨁󱓎󰝊󰻡󱴖ⱘ󰻮㑻῵󰵟󱴹䗤ℹ󰧥󱅲䰙󰜗ӊ⡍󱗻䴴󱢶DŽ󰦾㽕ӓⳳ῵󰵟䖒󰠄ϔ󱅮ⱘ㊒󱑺ˈEMIӓⳳⱘ㒧󱵰󱈅㛑䗤ℹ䍟󰧥Ѣ󱅲䰙DŽ✊㗠Ⳃ󰠡ⱘϾҎ䅵ㅫ󱴎ӓⳳ䗳󱑺䕗󱜶ˈӓⳳ῵󰵟󰻡󱴖󰣪󱯊䳔㽕㗫䌍󰻻䞣ⱘ󱯊䯈䖤ㅫˈ󱑊ϨӮ䘛󰠄󱬊󱬯󱗻䯂乬DŽ󱠔ҹ󰥇Փ㛑󰻳㦋󱕫󱅠󰜼ヺ󰧜󱅲䰙ⱘӓⳳ῵󰵟г󱳾󱖙㛑󱕫󰠄EMIӓⳳⱘ󱳔㒜㒧󱵰DŽ

㱑✊EMIӓⳳⱘ㒧󱵰󱑊ϡ㛑Ϣ󱅲䰙ⱘ⌟䆩㒧󱵰󱅠󰜼ヺ󰧜ˈԚ󱰃䗮䖛䗝󱢽䗖󱔧ⱘ῵󰵟㊒󱑺󰩠䖯㸠ℷ⹂ⱘ󰟚󱵤ˈՓ⫼䅵ㅫ󱴎ӓⳳ󱇍⬉䏃EMI⡍󱗻䖯㸠乘⌟󱰃󰧃㸠ⱘDŽEMIӓⳳ㒧󱵰П䯈ⱘ󱇍↨󰧃ҹ䅸Ў󱰃󱳝䇈󱳡󰡯ⱘDŽϟ㡖Ё󱇚󰝋ԧҟ㒡Փ⫼

SIMPLIS䕃ӊ䖯㸠Ӵ󱇐EMIӓⳳⱘ󱮍⊩DŽ

6.2.2 󰷎ѢSIMPLISⱘӴ󱇐EMIӓⳳ

󱴀󱭛Փ⫼ⱘSIMPLIS䕃ӊ󱰃󰷎Ѣ󰟚↉㒓󱗻῵󰵟ⱘӓⳳ󱎹󰝋ˈ󰝊䗳󱑺󱰃󰷎Ѣ

Spice䇁㿔ⱘ󱱂䗮ӓⳳ䕃ӊⱘ10̚50󰗡ˈ㗠Ϩ󱕜󱇥Ӯ󰦥⫳󱬊󱬯󱗻䫭䇃[8]DŽ䴲󱐌䗖󰧜䖤ㅫ䞣󰻻ⱘEMI⡍󱗻ӓⳳDŽӓⳳЁⱘЏ㽕῵󰵟󰦞󰝇䬂䆒㕂󰽖ϟ˖

1ǃLISN῵󰵟

󱅲䰙EMI⌟䆩Ё䳔㽕ϔϾ㒓䏃䰏󱡫〇󱅮㔥㒰LISN󱴹㦋󰦪󱑆󱡄󰖵󰧋DŽӓⳳՓ⫼ⱘLISN῵󰵟󰽖󰳒6-3󱠔⼎ˈ䆹ㅔ󰣪ⱘLISN῵󰵟ヺ󰧜CISPR 16㾘㣗ˈCISPR 16󱰃

CISPR 22󱠔󰦖㗗ⱘ󱷛󰞚DŽՓ⫼LISNⱘⳂⱘ󱰃󰻮䞡ⱘDŽϔ󱮍䴶󱅗󱰃ϔϾ“󱑆󰞔ⱘ”Ѹ⌕⬉⑤ˈ󱇚⬉㛑կ󱑨㒭⬉⑤󰦬󱤶󰰼DŽ󰦺ϔ󱮍䴶󱅗㛑󰻳󱦤կϔϾ〇󱅮ⱘ󰴛㸵䰏󱡫ˈ󱇍󰰾󰻄⑤㗠㿔LISN󱈅󱰃󱅗ⱘ䋳䕑DŽ󱥹󱬊󱴎󱟪乥䈅󰟚󱵤Ҿ󰧃ҹ󰟽⫼󱅗󱴹䇏󰟎⌟䞣

67

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

󰘐DŽ

LISNLACGNDNN_OUTL_OUT50uL5.5 56k100nL_TESTL_OUTL_TESTN_TEST10uGND10u1.1k56k1.1kN_TEST100nN_OUT50 505.5 N50u󰳒6-3 ㅔ󰣪ⱘCISPR㾘㣗LISN῵󰵟Fig.6-3 Simplified LISN model of CISPR standard

Ўњ󱮍󰖓⌟䞣ˈLISNⱘϸϾ50ȍ⬉䰏󱥹Ѣӓⳳ῵󰴫󰻪䚼DŽӓⳳ󱖙乏䖤㸠20mSҹ⒵䎇䕃ӊ󰟚󱵤󱠔䳔ⱘ󱭄󱥂䞣ⱘ㽕∖DŽ󰳒6-4Ў󰙙ゟ󰧊󰟚󱵤ⱘ䆒㕂󰳒DŽЎњϢ

CISPR⌟䆩ⱘ乥⥛㣗󰳈ϔ㟈ˈ䆒㕂䍋󰾟乥⥛˄Start freq./Hz˅Ў150kHzˈ㒧󱴳乥⥛(Stop freq./Hz)Ў30MHzDŽ⬅Ѣ󱭄󱥂䞣󰻻Ўњ㓽ⷁ䅵ㅫ󱯊䯈ˈ󰙙ゟ󰧊󰟚󱵤ⱘ󱮍⊩䗝󱢽󱖿䗳󰙙ゟ󰧊󰦬󱤶˄FFT˅DŽ

󰳒6-4 󰙙ゟ󰧊󰟚󱵤䆒㕂󰳒

Fig.6-4 Options of Fourier analysis setup

2ǃ󱏂῵󱑆󱡄󰩠󰝅῵󱑆󱡄ⱘ⌟䞣

ϔ㠀󱚙󰞉ϟ󰳼󱅲䰙⌟䆩Ё󱑊ϡ䳔㽕󰟚󱓔⌟䞣󱏂῵󰩠󰝅῵󱑆󱡄󰖵󰧋ˈ󰧘⾡㾘󱅮󰩠󱷛󰞚г䛑󱰃󱇍󱘏󱑆󱡄䖯㸠䰤󰠊DŽϡ䖛󰳼󱶤ѯ󱚙󰞉ϟ󱏠󱳯㛑󰻳󰟚󰟿ⷨお󰩠䆘Ԅ󱏂῵󱑆󱡄󰩠󰝅῵󱑆󱡄ⱘ⡍󱗻󱯊󱈅󱳝󱖙㽕󱇍󱅗Ӏ䖯㸠󰟚⾏DŽ󱅲䰙⌟䆩Ё㢹󱛇㽕󰟚󰟿㦋󱕫󱏂῵󰩠󰝅῵󰖵󰧋󱈅䳔㽕󰻡󱴖ⱘ󰟚⾏㺙㕂ˈ󱮴䆎󱰃󰷎Ѣ῵󱢳䖤ㅫ䖬󱰃Ⓒ⊶󰰼ⱘ󰟚⾏󰰼ˈ󱇍󰥳󱳝󰰾󰻄䛑󱳝ϡ󰧠⿟󱑺ⱘ㹄󰞣DŽ㗠󰳼ӓⳳЁ󰟽⫼䕃ӊⱘ⊶󱔶䖤ㅫ󰡳㛑󰧃ҹ󱮍󰖓ⱘ󰟚⾏󰟎󱏂῵󰩠󰝅῵󰖵󰧋ҹ󰖓󰟚󱵤󰩠↨䕗DŽ󰳼䅼䆎󱏂῵󰩠󰝅῵󰖵󰧋ⱘ󰟚⾏󰠡ˈ佪󰜜䅸䆚LISN⌟䞣Ё50ȍ⬉䰏Ϟ⬉󰥟П䯈ⱘ󰝇㋏DŽ

68

㄀󰝁ゴ󱮴ḹBoost PFC⬉䏃⬉⺕󱑆󱡄⡍󱗻ⷨお

ICM2VLIDMICM2VNICM󰳒6-5 ㅔ󰣪ⱘLISN⬉⌕䏃󱕘Fig.6-5 Current paths of simplifier LISN

󰦖㗗󰳒6-5ˈ󰳒Ё󱷛󰟎њ󰝅῵⬉⌕ICM󰩠󱏂῵⬉⌕IDMⱘӴ䕧䏃󱕘DŽҹ󰳒⼎ⱘ󱮍󰧥Ўℷ󱮍󰧥󰧃󱕫˖

­§ICM·

u󰀎VI50LDM¨¸°°©2¹®

°V 50u§ICM󰀐I·NDM¸¨°©2¹¯

˄6.1˅

⬅󰳒6-5󰧃ⶹ󰝅῵⬉⌕ⱘ󱮍󰧥󰞇󱅮њLISN󱇍󱅗ⱘ䰏󱡫ЎϸϾ50ȍⱘ󱑊㘨ˈ󰥇25ȍDŽ㗠󱇍Ѣ󱏂῵⬉⌕LISNⱘ䰏󱡫ЎϸϾ50ȍⱘІ㘨ˈ󰥇100ȍDŽ䳔㽕⊼󱛣ⱘ󱰃󱅲䰙⌟䆩Ё󱠔󱕫VL󰩠VN󰞴Т󱰃ϔ㟈ⱘˈ䖭󱰃󰲴Ў󱮴䆎󱰃󱏂῵⬉⌕䖬󱰃󰝅῵⬉⌕󰴛ЎѸ⌕󰖵󰧋ˈ⌟䞣Ё󰦾㽕䍙䖛󱭄Ͼ⬉󰥟󰨼󱳳VL󰩠VNⳌ󱏂ϡӮ󱕜󰻻ˈ䖭гヺ󰧜䕧󰜹↡㒓ⱘ󱇍⿄󱗻DŽ󱇚󱏂῵󱑆󱡄󰩠󰝅῵󱑆󱡄󰟚󰟿󱅮НЎ䆹⾡󱑆󱡄⬉⌕󰳼50ȍ⬉䰏Ϟѻ⫳ⱘ󰥟䰡ˈ⬅󱓣˄6.1˅󰧃󱕫˖

ICMVL󰀎VN­V u 50°°CM22®

°V 50uI VL󰀐VN

DMDM°¯2

˄6.2˅

󰧃㾕󰦾㽕⌟䞣󰟎VL󰩠VNˈ󰝡㒣䖛䖤ㅫ󰥇󰧃󱕫󰠄󰟚⾏ⱘ󰝅῵󱑆󱡄󰩠󱏂῵󱑆󱡄󰖵󰧋DŽSIMPLIS󱦤կϔ⾡㞾󱅮Н󰙙ゟ󰧊󰟚󱵤󰡳㛑󰧃ҹ󰜜󱇍⊶󱔶䖯㸠䖤ㅫ󰧢󰝡䖯㸠󰙙ゟ󰧊󰟚󱵤DŽ䗮䖛䖭Ͼ󰡳㛑󰧃ҹⳈ󱥹󱇚󱏂῵⬉󰥟󰖵󰧋󰩠󰝅῵⬉󰥟󰖵󰧋󰟚⾏󰟎󱴹󱑊󱇍󰝊䖯㸠󰙙ゟ󰧊󰟚󱵤DŽ䆒㕂󰽖󰳒6-6󱠔⼎DŽ

69

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

󰳒6-6 㞾󱅮Н󰙙ゟ󰧊䖤ㅫ䆒㕂󰳒Fig.6-6 Arbitrary Fourier analysis setup

Ϟ󰳒ЁExpression󱷣Ё󰧃󰸿󰝭⊶󱔶䖤ㅫ㸼䖒󱓣ˈ՟ЁVL󰩠VN󱇍󱑨Ѣ⬉䏃ⱘ㔥㒰㸼˄NETLIST˅󰧋ⷕЎ:24󰩠:25DŽ󱠔ҹϞ󰳒Ёⱘ䖤ㅫ󱓣 (:24+:25)/2󰥇Ў󱇍󰝅῵⬉󰥟󰘮󰙙ゟ󰧊󰟚󱵤DŽ󰧠⧚ˈ㢹󱇍󱏂῵⬉󰥟󰘮󰟚󱵤󰥇󰸿󰝭 (:24-:25)/2DŽ

3ǃPFC⬉󱛳󰜗ӊⱘ󱓎῵

EMIӓⳳ㒧󱵰ⱘ󰞚⹂󱑺ձ䌪Ѣ󰜗ӊ῵󰵟ⱘ㊒⹂󱗻DŽ󱇍ѢϔϾPFC⬉䏃󱴹䇈ˈEMIӓⳳЁ󱳔󰝇䬂ⱘ῵󰵟ЎPFC⬉󱛳ǃMOSFETⱘ󱆘⫳󰦖󱭄ǃ󰝇䬂㒓䏃ⱘ󱆘⫳⬉󱆍󰦞⬉󱛳ㄝDŽ󱔧䳔㽕䆘ԄEMIⒸ⊶󰰼ⱘ󱬜󱵰󱯊ˈ䖬䳔㽕㊒⹂ⱘEMIⒸ⊶󰰼῵󰵟ⱘ󱬃󱣕DŽ󱴀㡖ҙㅔ󰤩ҟ㒡⬉󱛳󰜗ӊⱘ󱓎῵䖛⿟DŽ

󱴀󱭛Ё䖯㸠EMIӓⳳⱘⳂⱘЏ㽕󱰃偠䆕⧚䆎󰟚󱵤ⱘℷ⹂󱗻ˈӓⳳЁ῵󰵟ⱘ䗝󱢽䳔㽕㛑󰻳ヺ󰧜󰜗ӊⱘ󱅲䰙䰏󱡫㸼⦄󰩠ℷ⹂ⱘ㸼䖒󰟎󰰾󰻄Ӵ䕧ⱘ䏃󱕘ǃ󰻻󱇣ㄝ󰝇䬂󰦖󱭄DŽ㱑✊ӓⳳ㒧󱵰󱳾󱖙㛑󰻳䖒󰠄󱷛󰞚㽕∖ˈԚ󱰃󰧃ҹ䗮䖛ӓⳳ󰦏ⷨお󱮴ḹ

Boost PFC󰩠Ӵ㒳Boost PFC󰳼EMI⡍󱗻󱮍䴶ⱘ󰤎󰟿DŽ

󱴀㡖ҙ󱇍󰟚ゟѢϸ䕧󰜹↡㒓ⱘ⬉󱛳㒧󱵘䖯㸠󰟚󱵤ˈ⬅4.2㡖䅵ㅫ󰧃ⶹ↣Ͼ⬉󱛳Ў400ȝHˈЎњ󰞚⹂ⱘ῵󱢳䆹⬉󱛳ⱘ䰏󱡫⡍󱗻ˈՓ⫼㔥㒰󰟚󱵤Ҿ󱇍󱅲䰙⬉󱛳ⱘ䰏󱡫䖯㸠њ⌟䞣ˈ㒧󱵰󰽖󰳒6-7󱠔⼎DŽ

70

㄀󰝁ゴ󱮴ḹBoost PFC⬉䏃⬉⺕󱑆󱡄⡍󱗻ⷨお

󰳒6-7 PFC⬉󱛳ⱘ䰏󱡫󱳆㒓Fig.6-7 Impedance curve of PFC inductor

15pC1400uL118kR220mR11.9uL33uL21.7kR38pC2(a)

(b)

󰳒6-8 PFC⬉󱛳ӓⳳ῵󰵟󰦞㒧󱵰

(a) PFC⬉󱛳῵󰵟; (b) PFC⬉󱛳῵󰵟ӓⳳ㒧󱵰

Fig.6-8 Simulation model of PFC inductor and simulation result

(a) Model circuit; (b) Simulation result

󰽖󰳒6-7󱠔⼎ˈPFC⬉󱛳ⱘ䰏󱡫󱳆㒓󰳼2MHzԡ㕂󱳝ϔϾ󱋄󰘐ˈП󰧢⬅Ѣ󰣱䯈󱆘⫳⬉󱆍ⱘ԰⫼䰏󱡫󱓔󰾟ϟ䰡ˈ󰳼18MHz󱎺󰧇󰠄䖒䈋󱑩DŽЎњ῵󱢳㊒⹂ⱘ䰏

71

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

󱡫⡍󱗻ˈḍ󱥂󰳒6-7󱠔⼎ⱘ䰏󱡫⌟䆩󱳆㒓ˈ󰟽⫼󱭛⤂[9]Ё󱦤󰟎ⱘϝ䰊⬉󱛳῵󰵟󱓎῵󱮍⊩㦋󱕫њӓⳳЁՓ⫼ⱘ⬉󱛳῵󰵟DŽ῵󰵟⬉䏃󰩠ӓⳳ䰏󱡫⼎Ѣ󰳒6-8ЁDŽ⬅ӓⳳ㒧󱵰󰧃㾕䆹⬉󱛳῵󰵟󰧃ҹ󰳼催䖒30MHzⱘ乥⥛㣗󰳈󰝙󰞚⹂῵󱢳󱅲䰙ⱘPFC⬉󱛳䰏󱡫󰩠Ⳍԡ󱳆㒓DŽ

󰳼󰧢㓁ⱘ󰟚󱵤Ё󰧃ⶹˈPFC⬉󱛳ⱘ䰏󱡫⡍󱗻󱇍󱏂῵󱑆󱡄ⱘ⡍󱗻󱕅󰪡󱳔󰻻DŽ󰲴

PFC⬉󱛳䰏󱡫󱳆㒓ⱘ󱋄󰘐󰩠䈋󰘐󰟚󰟿󱇍Ў󱏂῵󱑆󱡄䏃󱕘ЁPFC⬉󱛳󱰃Џ㽕󰜗ӊˈ

󱑨ⴔ󱏂῵󱑆󱡄ⱘ䈋󰘐󰩠󱋄󰘐DŽEMIӓⳳ㒧󱵰г䆕󱯢њ䖭Ͼ㒧䆎DŽ

6.2.3 Ӵ󱇐EMIӓⳳ㒧󱵰󱇍↨󰦞ㅔ󱵤

(a) (b) 󰳒6-9 Ӵ󱇐EMIӓⳳ㒧󱵰󱇍↨——󱏂῵󱑆󱡄

(a)Ӵ㒳Boost PFC⬉䏃ⱘ󱏂῵󱑆󱡄˗(b)󱮴ḹBoost PFC⬉䏃ⱘ󱏂῵󱑆󱡄Fig.6-9 Comparition of Conducted EMI simulation results—DM noise (a) DM noise of Conventional Boost PFC; (b) DM noise of Bridgeless Boost PFC

(a) (b) 󰳒6-10 Ӵ󱇐EMIӓⳳ㒧󱵰󱇍↨——󰝅῵󱑆󱡄

(a)Ӵ㒳Boost PFC⬉䏃󰝅῵󱑆󱡄˗(b)󱮴ḹBoost PFC⬉䏃󰝅῵󱑆󱡄Fig.6-10 Comparition of Conducted EMI simulation results—CM noise (a) CM noise of Conventional Boost PFC; (b) CM noise of Bridgeless Boost PFC

72

㄀󰝁ゴ󱮴ḹBoost PFC⬉䏃⬉⺕󱑆󱡄⡍󱗻ⷨお

󰳼󱴀ゴⱘ⧚䆎󰟚󱵤П󰠡ˈ佪󰜜󰟽⫼SIMPLISӓⳳ䕃ӊ󱇍󰟚ゟ⬉󱛳󱮴ḹBoost

PFC󰩠Ӵ㒳Boost PFC⬉䏃ⱘ󱏂῵ǃ󰝅῵䖯㸠њ乘⌟󰩠󱇍↨DŽ㒧󱵰󰽖󰳒6-9󰩠󰳒6-10󱠔⼎DŽ

⬅󰳒6-9󰧃㾕ˈ󱮴ḹBoost PFC⬉䏃󰩠Ӵ㒳Boost PFC⬉䏃ⱘ󱏂῵󱑆󱡄󰞴ТⳌ󰧠ˈӓⳳ㒧󱵰г󰧠󱯊ԧ⦄њPFC⬉󱛳῵󰵟ⱘ䰏󱡫⡍󱗻󱇍󱏂῵󱑆󱡄󱔎󱑺ⱘ󱕅󰪡DŽ󰳼󱏂῵󱑆󱡄ⱘӓⳳ㒧󱵰󰩠PFC⬉󱛳䰏󱡫⡍󱗻󱳆㒓ⱘ󱇍↨Ё󰧃ⶹˈPFC⬉󱛳󰳼

2MHz󱎺󰧇ⱘ󱋄󰘐䰏󱡫󱇍󱑨њ󱏂῵󱑆󱡄ӓⳳ󱳆㒓󰳼2MHzⱘ䈋󱑩ԡ㕂DŽ㗠PFC⬉󱛳󰳼18MHz󱎺󰧇ⱘϔϾ䰏󱡫ⱘ䈋󱑩ԡ㕂ˈ󱇍󱑨њ󱏂῵󱑆󱡄ӓⳳ󱳆㒓󰳼󰧠ḋ乥⥛ϟⱘ⊶󱋄ԡ㕂DŽ

󰳒6-10ⱘӓⳳ㒧󱵰㸼󱯢ˈ󱮴ḹBoost PFC⬉䏃ⱘ󰝅῵󱑆󱡄㽕↨Ӵ㒳Boost PFC⬉䏃󰻻󱕜󰻮DŽ⬅󰳒6-10a󰧃䇏󰟎Ӵ㒳Boost PFC⬉䏃ⱘ󰝅῵󱑆󱡄󱋄󰘐㑺Ў78dBµVDŽ㗠Ϩ󱅗ⱘ󱑆󱡄󱐙㗠󰳒6-10bЁⱘ󱮴ḹBoost PFC⬉䏃ⱘ󰝅῵󱑆󱡄󱋄󰘐㑺99dBµVˈ

󰘐󰳼󱭈Ͼ⌟䆩乥↉󰝙󰴛↨Ӵ㒳Boost PFC⬉䏃㽕催DŽḍ󱥂ӓⳳ㒧󱵰ⱘ󱇍↨󰘮󰟎󱥼󱮁󱮴ḹBoost PFC⬉䏃ⱘ󰝅῵󱑆󱡄󱰃󰝊EMI䯂乬ⱘѻ⫳ⱘḍ⑤DŽϟ㡖Ё󱇚Փ⫼ㄝ󱬜⬉䏃󰟚󱵤⊩󱇍ϸ㗙ⱘӴ󱇐EMI󱑆󱡄䖯㸠󰟚󱵤ˈ󰝊㒧󱵰г偠䆕њӓⳳ㒧䆎ⱘℷ⹂󱗻DŽ

6.3 Ӵ󱇐EMIⱘㄝ󱬜⬉䏃󰟚󱵤

ḍ󱥂EMI󰰾󰻄ѻ⫳ⱘ󰥳⧚󰩠EMI⌟䆩ⱘ䜡㕂󱮍⊩ˈ䗮䖛󰟚󱵤󱑆󱡄⑤ⱘ󱔎󱑺ǃ䖭󱑆󱡄䏃󱕘ҹ󰦞LISNẔ⌟󰠄ⱘ󱑆󱡄⬉󰥟󰧃ҹⳈ㾖ⱘ󰟚󱵤EMI󱑆󱡄ⱘ󱔎󱑺[10][11]DŽ⾡󱮍⊩󰳼󱴀ゴЁ㹿⫼󱴹󰟚󱵤󰦞↨䕗󰞴⾡󱢧󱠥П䯈ⱘEMI㸼⦄DŽ󰽖󰳒6-11󱠔⼎ˈ󰳼ㅔ󰣪ⱘEMI󰟚󱵤⬉䏃Ёˈ󱑆󱡄⑤ϔ㠀Ў󱓔󰝇ㅵⱘVDS⬉󰥟ˈԚ󱰃󰦾󱳝VDS⬉󰥟ⱘ催乥󰟚䞣󱠡󱇍EMI󱳝󱕅󰪡ˈ՟󰽖Ϟ󰤛⊓ǃϟ䰡⊓󰩠󱆘⫳󱤃㤵ㄝDŽ󱠔ҹ󱔧ϔϾ󱅠󱭈ⱘ⬉䏃󰟚㾷ЎEMIㄝ󱬜⬉䏃󱯊ˈ󱑆󱡄⑤󰥇Ў󰳒6-11󱠔⼎ⱘ催乥󰟚䞣⊶󱔶VnoiseDŽ

VDSVnoise󰳒6-11 VDS⬉󰥟催乥󰟚䞣󰟚㾷󰳒

Fig.6-11 High frequency segment decomposition of VDS

73

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

⹂󱅮⬉䏃ЁⱘЏ㽕󱑆󱡄⑤󰧢󱈅󰧃ҹ󱣝✻󰝅῵󱑆󱡄󰩠󱏂῵󱑆󱡄ⱘ䏃󱕘󰟚󱵤󰟎󱑆󱡄⑤󰳼LISNⱘ⬉䰏Ϟѻ⫳ⱘ󰰾󰻄⬉󰥟ⱘ󰻻󱇣ˈϟ䴶󱈅󰟚󰟿󱇍Ӵ㒳Boost PFC⬉䏃󰩠󱮴ḹBoost PFC⬉䏃䖯㸠󱏂῵󰩠󰝅῵󱑆󱡄ⱘEMIㄝ󱬜⬉䏃󰟚󱵤󱴹ⷨおϸ㗙Ӵ󱇐

EMI󱑆󱡄П䯈ⱘ󰤎󰟿DŽ

6.3.1 󱏂῵󱑆󱡄ㄝ󱬜⬉䏃󰟚󱵤

󱏂῵󱑆󱡄󱰃󰻘Ѣϸ󱴵䕧󰜹↡㒓П䯈ⱘ󰰾󰻄󰖵󰧋ˈ󱅗ϡ䗮䖛󱥹󰴄㒓䏃󱔶󱟤󰲲䏃DŽ󱏂῵󱑆󱡄ⱘ⬉⌕󱮍󰧥󱰃ḍ󱥂䕧󰜹Ѹ⌕⬉ⱘ󰨼󱳳㗠󰦬󰣪ⱘDŽ󰦬󱤶󰰼䕧󰜹ǃ䕧󰟎ⱘ󱎹԰⬉⌕󰳼󱴀䋼Ϟг󱰃󱏂῵ⱘDŽ󰲴Ў󱅗⌕䖯L󱟪N↡㒓ˈ󱑊䗮䖛N󱟪L↡㒓⾏󱓔DŽϡ䖛ⱘ󱏂῵󱑆󱡄󱑊≵󱳝󰣙󰧿䖭Ͼ⬉⌕DŽ䖭󱰃󰲴Ў󱎹԰⬉⌕㱑✊󱰃󱏂῵ⱘˈԚ󱅗ϡ󱰃󱴖䆃DŽ󰦺ϔ󱮍䴶ˈ󱇍ϔϾ䆃󰧋⑤㗠㿔ˈ㢹󱅗ⱘ󰷎󱴀乥⥛󱰃⬉㔥乥⥛ⱘϸ󰗡

——100Hz󱟪120Hzˈ󱅗󱅲䋼Ϟҡ󱰃󱈲ѢⳈ⌕ⱘ㗠ϡ󱰃󱴖䆃DŽ󱏂῵󱑆󱡄ⱘ󰥳⧚󰩠䏃󱕘Ⳍ󱇍Ѣ󰝅῵󱑆󱡄󱴹䇈䕗Ўㅔ󰤩DŽ㒣䖛󰟚󱵤Ӵ㒳Boost PFC󰩠󱮴ḹBoost PFCⱘ󱏂῵󱑆󱡄󰳼󱗑⬹⬉󱛳㒧󱵘ǃ㒩㒘󱆘⫳󰦖󱭄󱮍䴶ⱘ󱏂󰟿󰧢󱰃ϔ㟈ⱘˈ󰝋ԧⱘ󰟚󱵤󰩠󱥼󱇐󰽖ϟDŽ

1ǃӴ㒳Boost PFC⬉䏃ⱘ󱏂῵ㄝ󱬜⬉䏃

󱴀㡖󱇚ㅔ㽕󰟚󱵤Ӵ㒳Boost PFC⬉䏃ⱘ󱏂῵󱑆󱡄ㄝ󱬜⬉䏃ˈ󱮶✊󰟚󱵤ⱘ⬉䏃ЎPFC󰦬󱤶󰰼ˈ󰟭Ӵ㒳Boost PFC⬉䏃ⱘ󱭈⌕ḹЁ↣Ͼ󱯊󰠏󰴛󱳝2ϾѠ󱵕ㅵ󱇐䗮DŽ󰽖󰳒6-12a󱠔⼎ˈ󰘛䆒ℸ󱯊VL>VNѠ󱵕ㅵD1󰩠D4󱇐䗮DŽ󱏂῵⬉⌕󰳼LǃN↡㒓䯈⌕䗮DŽ󰰾󰻄⑤ЎQ1󱓔󰝇ㅵVDS⬉󰥟ⱘ催乥󰟚䞣DŽㄝ󱬜⬉䏃Ў󰳒6-12b󱠔⼎ˈ󱇍Ѣ󱏂῵⬉⌕󱴹䇈LISNⱘ䰏󱡫Ў100ȍDŽ󱮴䕧󰜹󱏂῵Ⓒ⊶󰰼󱯊ˈ󱏂῵䏃󱕘ЁҙІ㘨PFC⬉󱛳DŽ䆹⬉󱛳󱇍󱏂῵󰖵󰧋󱳝ϔ󱅮ⱘ󱡥󰠊԰⫼DŽ

IDMCoRoVnoise (a) (b) 󰳒6-12 Ӵ㒳Boost PFC⬉䏃ⱘ󱏂῵⬉⌕䏃󱕘󰦞ㄝ󱬜⬉䏃

(a) 󱏂῵⬉⌕Ӵ䕧䏃󱕘˗(b)ㄝ󱬜⬉䏃

Fig.6-12 DM current path and equivalent circuit of Conventional Boost PFC

(a) DM current path; (b) Equivalent circuit

2ǃ󱮴ḹBoost PFC⬉䏃ⱘ󱏂῵ㄝ󱬜⬉䏃

󱮴ḹBoost PFC⬉󱛳󰧃ҹ󱳝ϝ⾡㒧󱵘˖󰟚ゟ⬉󱛳ǃ㗺󰧜⬉󱛳󰩠󰤩Ͼ⬉󱛳㒧󱵘DŽԚ󱰃󱇍Ѣ󱏂῵󱑆󱡄䏃󱕘󱴹䇈ˈϝ⾡㒧󱵘ⱘ⬉󱛳󰴛ㄝ󱬜Ѣ󱘏ⱘPFC󱳝󱬜⬉󱛳DŽ󱠔ҹ

74

㄀󰝁ゴ󱮴ḹBoost PFC⬉䏃⬉⺕󱑆󱡄⡍󱗻ⷨお

󱏂῵ㄝ󱬜⬉䏃ЁІ㘨ⱘ⬉󱛳󱰃ϔ㟈ⱘDŽϟ䴶ҙҹ󰟚ゟ⬉󱛳ⱘ󱮴ḹBoost PFCЎ՟㒭󰟎󱏂῵⬉⌕Ӵ䕧䏃󱕘󰦞ㄝ󱬜⬉䏃DŽ⬅󱮴ḹBoost PFC⬉䏃ⱘ󱇍⿄󱗻ˈ󰟚󱵤󱯊󰘛䆒VL>VNDŽ󱗑⬹㓁⌕󱓔󰝇ㅵⱘ󱇐䗮󰥟䰡ˈ󱇍Ѣ󱏂῵󰖵󰧋㗠㿔L1󰩠L2ㄝ󰧠ѢІ㘨󰝇㋏ˈ󰟭󱏂῵⬉⌕Ӵ䕧䏃󱕘󰧃ㅔ󰣪Ў󰳒6-13b󱠔⼎DŽ

CoRoVnoise (a) (b) 󰳒6-13 󱮴ḹBoost PFC⬉䏃ⱘ󱏂῵⬉⌕䏃󱕘󰦞ㄝ󱬜⬉䏃

(a) 󱏂῵⬉⌕Ӵ䕧䏃󱕘˗ (b) ㄝ󱬜⬉䏃

Fig.6-13 DM current path and equivalent circuit of Bridgeless Boost PFC circuit

(a) DM current path; (b) Equivalent circuit

󱔧Ӵ㒳Boost PFC⬉䏃ⱘPFC⬉󱛳󰘐󰩠󱮴ḹBoost PFC⬉䏃ⱘPFC⬉󱛳󰘐Ⳍ󰧠󱯊ˈ󱗑⬹󰝊󱆘⫳󰦖󱭄ⱘ󱏂󱓖ˈ󱅗Ӏⱘ󱏂῵ㄝ󱬜⬉䏃󱰃󱅠󰜼ϔḋⱘDŽ󱠔ҹ󱮴ḹBoost

PFC⬉䏃ⱘ󱏂῵󱑆󱡄󰩠Ӵ㒳Boost PFC⬉䏃ⱘ󱏂῵󱑆󱡄󱔎󱑺󰳼⧚䆎Ϟ󱰃ϔ㟈ⱘDŽ䡈Ѣ⬉󱛳󱳝󱆘⫳⬉󱆍ǃⓣ󱛳ㄝ󱆘⫳󰦖󱭄DŽӴ㒳Boost PFC󰤩ϾPFC⬉󱛳Ϣ󱮴ḹ

Boost PFCⱘϸϾ⬉󱛳П䯈㒧󱵘ⱘϡ󰧠Ӯ󱓩䍋󱏂῵󱑆󱡄ⱘ󰤎󰟿ˈԚ󱑊ϡӮ󱕜󱯢󱰒DŽ6.2.3㡖Ё󱇍󱏂῵󱑆󱡄ⱘӓⳳ㒧󱵰г󰧠ḋ䆕󱯢њϞ䗄㒧䆎DŽ

6.3.2 󰝅῵󱑆󱡄ㄝ󱬜⬉䏃󰟚󱵤

1ǃӴ㒳Boost PFC󱢧󱠥ⱘ󰝅῵ㄝ󱬜⬉䏃

CXCpCB󰳒6-14 Ӵ㒳Boost PFC⬉䏃󰦞ㅔ󰣪ⱘLISN῵󰵟

Fig.6-14 Conventional Boost PFC circuit and simplified LISN model

󰳒6-14㒭󰟎њ󱏺󱳝󱆘⫳󰦖󱭄ⱘӴ㒳Boost PFC󱢧󱠥󰩠ㅔ󰣪ⱘLISN῵󰵟DŽЎњ󱮍󰖓䅼䆎ˈⳕ⬹󱥻󰠊䚼󰟚⬉䏃ˈ催乥󱆘⫳󰦖󱭄󰦾󰖱⬭њ󱳔䞡㽕ⱘMOSFETϢ󱬷⛁⠛П䯈ⱘ⬉󱆍Cp󰦞PFC󰡳⥛󰴄Ϣ󰻻󰴄П䯈ⱘ⬉󱆍CBˈ󱅲䰙⬉䏃ЁCBⱘ󰘐㽕↨

75

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

Cp󰻻󱕜󰻮DŽCXЎEMIⒸ⊶󰰼Ёⱘ󱏂῵⬉󱆍DŽ󱅗ⱘ󱄬󰳼󰧃ҹ󱬍󰦬󰝅῵󱑆󱡄⬉⌕ⱘ䏃󱕘ˈՓ󱕫LISN⬉䰏Ϟⱘ󰝅῵󱑆󱡄⬉⌕󱇍⿄󰟚󱏗DŽⷨお󰝅῵󱑆󱡄ⱘㄝ󱬜⬉䏃䳔㽕󰟚󱵤ϡ󰧠󱯊󱳳󰝅῵⬉⌕󰳼⬉䏃Ёⱘ⌕󰧥DŽ󱔧󱓔󰝇ㅵQ1󰻘Ѣϡ󰧠⢊󱗕󱯊ˈ󰝅῵⬉⌕ⱘ⌕󰧥гϡ󰧠DŽ󰳒6-15󰟚󰟿㒭󰟎њVL>VN󱯊󱓔󰝇ㅵ󰝇󱮁󱯊󰠏󰩠󱓔䗮󱯊󰠏󰝅῵⬉⌕ⱘ⌕󰧥DŽ󱔧Q1󰝇󱮁󱯊󰠏ˈVDS⬉󰥟⬅󱇐䗮⬉󰥟˄䖥ԐѢ0V˅󰤛催󰠄䕧󰟎⬉󰥟385VDŽ⬉󱆍Cp󰜙⬉ˈ󰻻䚼󰟚ⱘ󰜙⬉⬉⌕⬅CB󱵘󱟤󰲲䏃DŽ󰦺ϔ䚼󰟚⬉⌕䗮䖛

LISNǃCX⬉󱆍󰩠󱭈⌕ḹ󱔶󱟤њ󰝅῵⬉⌕󰳼LISNϞ㹿Ẕ⌟󰟎󱴹DŽ⬅ѢEMIⒸ⊶󰰼Ё󱏂῵⬉󱆍CXⱘ󱑇㸵԰⫼ˈ󰝅῵⬉⌕䏃󰳼LISN⬉䰏Ϟ󱑇󰴛󰟚󱏗ˈ󱑊󰳼CX󰻘∛󰧜DŽ󰲴PFC⬉󱛳L1ⱘ䰏󱡫󱕜󰻻ˈ󰝅῵⬉⌕󰞴Т󰜼䚼Ң󰡳⥛󰴄󰲲䏃⌕䗮DŽ

CXCpCXCpICMCBICMCB˄a˅ ˄b˅󰳒6-15 Ӵ㒳Boost PFC⬉䏃ⱘ󰝅῵󱑆󱡄䏃󱕘˄VL>VN˅

˄a˅󱓔󰝇ㅵ󰝇󱮁󱯊󰠏˗˄b˅󱓔󰝇ㅵ󱓔䗮󱯊󰠏˗Fig.6-15 CM noise path of Conventional Boost PFC(VL>VN)

(a) Q1 being turned off; (b) Q1 being turned on

Ң󰳒6-15󰧃ҹ䖯ϔℹ󱕫󰠄󰽖󰳒6-16ⱘ󰝅῵󱑆󱡄⬉䏃ㄝ󱬜⬉䏃󰳒󱑊󰟽⫼󱠈㓈󰤫󰦬󱤶󱇚󱑆󱡄⑤󰣪ㅔЎϔϾ⬉󰥟⑤VequІ㘨ϔϾ󰝙䰏󱡫Cequⱘ󱔶󱓣DŽ󱇍Ѣ󰝅῵⬉⌕󱴹䇈ˈLISNⳌ󱔧Ѣ25ȍⱘ䰏󱡫DŽ󰟽⫼󱠈㓈󰤫󰦬󱤶󱕫󰠄ⱘVequ󰩠Cequ󰟚󰟿Ў˖

Vequ Vnoise󰂘

_CpCB󰀎Cp

ˈCequ CB󰀎Cp

+_25ƻCB+Vnoise25ƻVequCpCequ󰳒 6-16 Ӵ㒳Boost PFC⬉䏃ⱘ󰝅῵󱑆󱡄ㄝ󱬜⬉䏃Fig.6-16 CM noise equivalent circuit of Conventional Boost PFC

76

㄀󰝁ゴ󱮴ḹBoost PFC⬉䏃⬉⺕󱑆󱡄⡍󱗻ⷨお

2ǃ󰟚ゟ⬉󱛳󱮴ḹBoost PFC󱢧󱠥ⱘ󰝅῵ㄝ󱬜⬉䏃

CoCp2RoCp1CB󰳒6-17 󰟚ゟ⬉󱛳ⱘ󱮴ḹBoost PFC󱢧󱠥Fig.6-17 Bridgeless Boost PFC with split inductor

󰳒6-17㒭󰟎њϔϾ󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃DŽϢӴ㒳Boost PFC⬉䏃󰝅῵⬉⌕䏃󱕘󰟚󱵤󱮍⊩ϔ㟈DŽ󰘛䆒ℸ󱯊VL>VNˈD2ǃQ2󰻘ѢBoost⢊󱗕ˈ󱗑⬹㓁⌕󱓔󰝇ㅵQ1ⱘ󰥟䰡ˈ䆹⬉䏃󰳼󱓔󰝇ㅵ󱓔䗮󰩠󰝇󱮁󱯊󰠏ⱘ󰝅῵⬉⌕䏃󱕘󰳒󰽖ϟ˖

Cp2CoRoCp2CoRoCB󰀎Cp1CB󰀎Cp1(a) (b)

󰳒6-18 󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃ⱘ󰝅῵󱑆󱡄䏃󱕘˄VL>VN˅

˄a˅󱓔󰝇ㅵ󰝇󱮁󱯊󰠏˗˄b˅󱓔󰝇ㅵ󱓔䗮󱯊󰠏Fig.6-18 CM noise path of Bridgeless Boost PFC (VL>VN)

(a) Q2 being turned off; (b) Q2 being turned on

VnoiseCB󰀎Cp1Cp2󰳒6-19 󰟚ゟ⬉󱛳󱮴ḹBoost PFC󰝅῵䏃󱕘ㅔ󰣪⬉䏃

Fig.6-19 CM noise equivalent circuit of Bridgeless Boost PFC with split inductors

⬅󰳒6-18󰧃㾕ˈ󰟚ゟ⬉󱛳䜡㕂ⱘ󱮴ḹBoost PFC⬉䏃㒧󱵘Ⳍ󱔧Ѣ󰳼󰡳⥛󰴄󰲲

77

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

䏃Ϟг󱄬󰳼⬉󱛳˄󰳒6-18ЁⱘL2˅DŽ󱗑⬹Q1ⱘ󱇐䗮⬉䰏ˈ⬅ѢL1󰩠L2⬉󱛳ⱘϔ㟈󱗻ˈ⧚󱛇󱚙󰞉ϟ󰝅῵⬉⌕󱇚󱑇󰴛⌕䖛L1󰩠L2⬉󱛳DŽ󰳒6-18󱇍󱑨ⱘㄝ󱬜⬉䏃󰽖󰳒6-19󱠔⼎DŽ

󰟽⫼󱠈㓈󰤫󱅮⧚󰧃ҹ󱇚󰳒6-19Ёⱘㄝ󱬜⬉䏃󰣪ㅔЎ⬉󰥟⑤І㘨󰝙䰏󱡫󰩠

LISN䰏󱡫ⱘ󱔶󱓣DŽ󰽖󰳒6-20󱠔⼎ˈ⬉䏃IЁaǃbϸ⚍П䯈ⱘ⬉󱛳ЎL1ϢL2ⱘ󱑊㘨ˈ䆒L1ǃL2⬉󱛳󰘐󰴛ЎL󰟭ㄝ󱬜⬉󱛳ЎL/2DŽ󰦜⬅⬉䏃ⱘ󱇍⿄󱗻aǃbϸ⚍П䯈ⱘㄝ󱬜⬉󰥟⑤ЎVnoise/2ˈbǃc⚍П䯈󰖱⬭⬉󰥟⑤VnoiseDŽ㒻㓁󱇍⬉䏃԰󱠈㓈󰤫ㄝ󱬜󰦬󱤶DŽ󱕫󰠄󰳒Ċ󱠔⼎⬉䏃DŽ䆹⬉䏃Ёⱘ⬉󰥟⑤󰦞ㄝ󱬜䰏󱡫ⱘㅫ󱓣Ў˖

Vequ

VnioseCB󰀎Cp1󰀐Cp2

󰂘

2CB󰀎Cp1󰀎Cp2

Cequ CB󰀎Cp1󰀎Cp2

L/2Vnoise2L/2VnoiseVequ+_CB󰀎Cp1Cp2Cequ󰳒6-20 󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃ⱘ󰝅῵ㄝ󱬜⬉䏃

Fig.6-20 CM equalization circuit deduction of Bridgeless Boost PFC with split inductors

3ǃ㗺󰧜⬉󱛳󱮴ḹBoost PFC󱢧󱠥ⱘ󰝅῵ㄝ󱬜⬉䏃

L1L1MCM currentL2MAC

L2(a) (b) 󰳒6-21 㗺󰧜⬉󱛳㒧󱵘⼎󱛣󰳒(a) 乎󱥹І㘨˗(b)󱓖󰧡ッ󱑊㘨Fig.6-21 Structure of coupled inductor

(a) Dotted terminal series connection; (b) non-dotted terminal parallel connection

㗺󰧜⬉󱛳󱰃㒩󰠊󰳼󰧠ϔ⺕㢃ϞⱘϸϾ⣀ゟ㒩㒘ˈ䗮䖛⺕䗮㗺󰧜ⳌѦ԰⫼DŽ󱮴ḹBoost PFC⬉䏃Փ⫼ⱘ㗺󰧜⬉󱛳㒧󱵘Ⳍ󱇍Ѣ䕧󰜹⬉⌕󱴹䇈󰧠󰧡ッ䜡㕂Ў乎󱥹І㘨㒧󱵘,󰽖󰳒6-21aDŽḍ󱥂㗺󰧜⬉󱛳ⱘ󰥳⧚󰧃ҹㄝ󱬜ЎϔϾ⬉󱛳LsˈLsⱘㅫ󱓣Ў˖

Ls L1󰀎L2󰀎2M

󱓣ЁMЎ㗺󰧜⬉󱛳ⱘѦ󱛳DŽѦ󱛳󰩠L1ǃL2ⱘ󰝇㋏Ў˖

˄6.3˅

78

㄀󰝁ゴ󱮴ḹBoost PFC⬉䏃⬉⺕󱑆󱡄⡍󱗻ⷨお

M kuL1󰂘L2˄6.4˅

󱓣ЁkЎ㗺󰧜㋏󱭄ˈ󱔧㗺󰧜⬉󱛳ⱘ㒩㒘󱠔󱳝⺕䗮㋻󱆚㗺󰧜󱯊㗺󰧜㋏󱭄Ў1ˈ󰘛䆒ℸ󱯊L1=L2=LpDŽ󰟭Ѧ󱛳M󰻻󱇣ЎLpˈ󱘏⬉󱛳L󰥇Ў󰤩Ͼ㒩㒘⬉󱛳ⱘ󰲯󰗡DŽ՟󰽖˖󰤩䖍㒩㒘Ў200ȝHⱘ㗺󰧜⬉󱛳乎󱥹І㘨󰧢󱈅ㄝ󱬜ѢϔϾ800ȝHⱘ⬉󱛳DŽ

㗠㗺󰧜⬉󱛳󰳼󱮴ḹBoost PFC⬉䏃Ёⱘ⡍⅞󱗻󰳼Ѣ󰝊󱇍󰝅῵⬉⌕󱴹䇈ㄝ󱬜Ў󱓖󰧡ッ󱑊㘨㒧󱵘ˈ󰽖󰳒6-21bDŽḍ󱥂㗺󰧜⬉󱛳ⱘ󰥳⧚ˈ󱓖󰧡ッ󱑊㘨ㄝ󱬜⬉󱛳Lpⱘㅫ󱓣Ў˖

L1󰂘L2󰀐M2

Lp

L1󰀎L2󰀎2M

˄6.5˅

󱔧ϸϾ⬉󱛳㒩㒘㗺󰧜㋏󱭄Ў1󱯊ˈㄝ󱬜⬉󱛳LpЎ䳊DŽ󱠔ҹ⧚󱛇⢊󱗕ϟ㗺󰧜⬉󱛳󱇍󰝅῵⬉⌕ⱘ䰏󱡫Ў䳊ˈ󰳼󰝅῵ㄝ󱬜⬉䏃Ё㗺󰧜⬉󱛳Ⳍ󱔧Ѣⷁ䏃DŽḍ󱥂Ϟ䗄󰟚󱵤ㅔ󰣪㗺󰧜⬉󱛳㒧󱵘󰝅῵ㄝ󱬜⬉䏃ⱘℹ偸󰽖ϟ˖

T1+V_noisebCB󰀎Cp1Vnoise2Vnoisea25ƻcCp2a25ƻbCB󰀎Cp1cCp2I+_III

IIVnioseCB󰀎Cp1󰀐Cp2󰀀2CB󰀎Cp1󰀎Cp2Vequ25ƻVequ CequCequ CB󰀎Cp1󰀎Cp2󰳒6-22 㗺󰧜⬉󱛳󱮴ḹBoost PFC󰝅῵ㄝ󱬜⬉䏃ⱘㅔ󰣪

Fig.6-22 CM equalization circuit deduction of Bridgeless Boost PFC with coupled inductor

ĉ-Ċ˖󰷎Ѣ㗺󰧜⬉󱛳ⱘ󰟚󱵤ˈ󰳼󰝅῵ㄝ󱬜⬉䏃Ё⍜󰦏㗺󰧜⬉󱛳㒧󱵘DŽ󰳒IЁaǃb

ϸ⚍П䯈ⱘ⬉󰥟⬅Ѣ㗺󰧜⬉󱛳䰏󱡫ⱘ󱇍⿄󱗻ЎVnoise2DŽbǃcϸ⚍П䯈ⱘ⬉󰥟⑤󰖱󱣕ЎVnoiseDŽ⊼󱛣ϸ㗙ⱘ󱮍󰧥DŽ

Ċ-ċ˖󰟽⫼󱠈㓈󰤫󱅮⧚⬉䏃ㅔ󰣪Ў⬉󰥟⑤І㘨󰝙䰏󱡫󰩠LISN⬉䰏ⱘ󱔶󱓣DŽ󱳔㒜

ⱘ㒧󱵰󰽖󰳒ċ󱠔⼎DŽ

4ǃ󰤩Ͼ⬉󱛳󱮴ḹBoost PFC⬉䏃ⱘ󰝅῵ㄝ󱬜⬉䏃

⬅Ѣ󰤩Ͼ⬉󱛳󱮴ḹBoost PFC⬉䏃㒧󱵘ⱘ䴲󱇍⿄󱗻ˈ䳔㽕󱣝✻䕧󰜹↡㒓⬉󰥟

79

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

ⱘ󱮍󰧥󰟚ϸ⾡󱚙󰞉󰟚󱵤󰝊󰝅῵ㄝ󱬜⬉䏃DŽ󰘛䆒PFC⬉󱛳ԡѢ☿㒓LϞˈϸ⾡󱚙󰞉ⱘㅔ󰣪㒧󱵘󰽖󰳒6-23󱠔⼎DŽ󱔧VL>VN󱯊ˈ󱭈Ͼ⬉䏃󱎹԰󱮍󱓣󰩠EMI⡍󱗻ϢӴ㒳ⱘBoost PFC⬉䏃󱮴󱓖DŽ⬅ѢL1⬉󱛳ⱘ催䰏󱡫ˈ󰝅῵⬉⌕󱇚⬅PFC󰡳⥛󰴄󱵘󱟤󰲲䏃DŽ󱔧VLCXCp2CoRoCXCp1CoRoCB󰀎Cp1CB󰀎Cp2󰳒6-23 󰤩Ͼ⬉󱛳󱮴ḹBoost PFCⱘ󰝅῵⬉⌕䏃󱕘

Fig.6-23 CM current path of Bridgeless Boost PFC with single inductor

VnoiseCB󰀎Cp1Cp2VnoiseCB󰀎Cp2Cp1󰳒6-24 󰤩Ͼ⬉󱛳󱮴ḹBoost PFC󰝅῵ㅔ󰣪⬉䏃

Fig.6-24 Simplified CM circuit of Bridgeless Boost PFC with single inductor

25ƻ

Cequ󰳒6-25 󰤩Ͼ⬉󱛳󱮴ḹBoost PFC󰝅῵ㄝ󱬜⬉䏃

Fig.6-25 CM equalization circuit of Bridgeless Boost PFC with single inductor

⬅󰳒6-24ⱘㅔ󰣪󰳒󰧃ҹⳟ󰟎LISN⬉䰏󰳼VL>VNⱘ󱚙󰞉ϟ󱰃Ϣ⬉󱆍CB󰀎Cp1

󱑊㘨ⱘDŽ㗠󰳼VLCp2ЎϸϾ󱓔󰝇ㅵ󱇍󰴄ⱘ󱆘⫳⬉󱆍ˈ󰻻󱇣󰷎󱴀ϔ㟈DŽ󱅗Ӏ㽕↨CB㽕󱇣󱕫󰻮DŽ󱠔ҹ󱣝✻⬉󱆍󰟚󰥟ⱘ󰝇㋏ˈVN>VL󱚙󰞉ϟⱘ󰝅῵⬉󰥟㽕↨VL80

_

VequVequ VL>VN

Cp2CB󰀎Cp1󰀎Cp2Vequ VLCequ CB󰀎Cp1󰀎Cp2Cequ CB󰀎Cp1󰀎Cp2㄀󰝁ゴ󱮴ḹBoost PFC⬉䏃⬉⺕󱑆󱡄⡍󱗻ⷨお

󰻻ⱘ󰻮DŽ󰟽⫼󱠈㓈󰤫󰦬󱤶󱇚󰳒6-24󱠔⼎⬉䏃ⱘ󰝅῵󰰾󰻄⑤󰣪ㅔЎϔϾ⬉󰥟⑤І㘨󰝙䰏󱡫ⱘ󱔶󱓣ˈ㒧󱵰󰽖󰳒6-25󱠔⼎DŽ

䳔㽕䇈󱯢ⱘ󱰃ˈ󱴀㡖䅼䆎ⱘ󰤩Ͼ⬉󱛳󱮴ḹBoost PFC⬉䏃󰳼󱅲䰙Ё󱑊ϡ󱥼㤤Փ⫼DŽϡҙҙ󱰃⬅Ѣ䖭⾡㒧󱵘󰝋󱳝󱰒㨫ⱘEMI㔎䱋ˈ󱳈Џ㽕ⱘ󱰃󰤩Ͼ⬉󱛳ⱘ󱮴ḹ

Boost PFC⬉䏃󱇍Ѣ䕧󰜹↡㒓󱴹䇈󱰃ϔ⾡䴲󱇍⿄󱗻ⱘ㒧󱵘ˈՓ󱕫󱅗󰳼󱎹԰ЁӮѻ⫳ϡ〇󱅮ⱘ⦄䈵ˈ󰳼󰻮⃵EMI⌟䆩ЁгӮ󱳝ϡϔ㟈ⱘ⌟䞣㒧󱵰󰟎⦄DŽ㗠Ϩ󰳼󰝅῵󱑆󱡄Ⳍ󱔧󱔎⚜ⱘ⡍󱅮󰤞Ͼ󰨼󱳳󰝙ˈ䖛󰻻ⱘ󰝅῵⬉⌕󱖙󱅮Ӯ󱕅󰪡󰠄䞛ḋ󰖵󰧋ҹ󰦞󱥻󰠊⬉䏃ⱘ䖤԰DŽ󱠔ҹ󱴀󱭛ⱘ󱅲偠󰴛󱳾⍝󰦞󰤩Ͼ⬉󱛳ⱘ󱅲䰙⌟䆩DŽ

5ǃ󰝅῵ㄝ󱬜⬉䏃ⱘ󱇍↨󰟚󱵤

󰠡䗄⦃㡖䆺㒚󱥼󱇐њ󰲯⾡PFC⬉䏃󱢧󱠥ⱘ󰝅῵ㄝ󱬜⬉䏃ˈㄝ󱬜⬉䏃Ё󰰾󰻄⑤󰴛󰧃㸼⼎ЎϔϾ⬉󰥟⑤І㘨ϔϾ󰝙䰏󱡫ⱘ󱔶󱓣DŽЎњㅔ󰣪󰟚󱵤ˈ󰘛䆒󱠔󱳝㒧󱵘⬉䏃ⱘ󰦖󱭄󰴛ϔ㟈ˈ󱓔󰝇ㅵ󱇍󰴄ⱘ⬉󱆍Cp1 Cp2 CpDŽ㒧󱵰󰽖㸼6-2󱠔⼎DŽ

㸼6-2 󰝅῵ㄝ󱬜⬉䏃㒧󱵰ⱘ↨䕗Table 6-2 CM equivalent circuits comparison

PFC󱢧󱠥

Vequ

󰝀󱓣

󱅲՟17.28V

CequCB󰀎CpCB󰀎2CpCB󰀎2CpCB󰀎2CpCB󰀎2Cp

󰻛⊼

Ӵ㒳Boost PFC

Vnoise󰂘

CpCequ

󰟚ゟ⬉󱛳󱮴ḹBoost PFC

VnoiseCB

󰂘2CequVnoiseCB

󰂘2Cequ

175.6V

ㄝ󱬜⬉䏃ЁІ㘨󱳝⬉󱛳

㗺󰧜⬉󱛳󱮴ḹBoost PFC 175.6V

󰤩Ͼ⬉󱛳󱮴ḹBoost PFC

VL>VN

Vequ Vniose󰂘

CpCequCequ

16.54V

VLCB󰀎Cp

368.46V

㸼6-2ЁⱘVequ󱅲՟󱷣Ёⱘ󱭄󱥂󱰃󰷎Ѣ󱅲䰙⬉䏃ⱘ󰦖󱭄䅵ㅫ㦋󱕫ⱘDŽ󰳼󱅲䰙⬉䏃ЁˈCBЎ1nF⬉󱆍ˈ⌟󱕫󱓔󰝇ㅵϢ󱬷⛁⠛˄󱬷⛁⠛󱥹󰴄˅П䯈⬉󱆍CpЎ47pFˈ

Vnoiseⱘ󱋄󱋄󰘐Ў䕧󰟎⬉󰥟385VDCDŽ󰳼󱳔㒜ㄝ󱬜⬉䏃ЁˈCequⱘ󰘐󰴛Ⳍ󱏂ϡ󰻻DŽㄝ󱬜󱑆󱡄⑤Vequⱘ⬉󰥟󰞇󱅮њLISNϞⱘ󱑆󱡄󰰾󰻄ⱘ󰻻󱇣DŽ䗮䖛䆹󰘐󰧃ҹ󱯢󱰒󰦥⦄󱮴ḹBoost PFC⬉䏃ⱘㄝ󱬜󱑆󱡄⑤⬉󰥟↨Ӵ㒳Boost PFC⬉䏃ⱘㄝ󱬜󱑆󱡄⑤⬉󰥟󰻻󱕜󰻮DŽ

⬅㸼6-2󰧃ҹ󱕫󰟎㒧䆎󱮴ḹBoost PFC⬉䏃ⱘ󰝅῵󱑆󱡄↨Ӵ㒳Boost PFC⬉

81

󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

䏃催󱕜󰻮DŽ󰳼󰧘⾡⬉󱛳䜡㕂󱚙󰞉ϟⱘ󱮴ḹBoost PFCЁˈ󰟚ゟ⬉󱛳󰩠㗺󰧜⬉󱛳䜡㕂ⱘ󱮴ḹBoost PFC󰝅῵ㄝ󱬜󱑆󱡄⑤Vequ󰩠󰝙䰏󱡫Cequ󱰃ϔ㟈ⱘDŽϡ䖛󰟚ゟ⬉󱛳㒧󱵘ⱘ󱢧󱠥󰳼󰝅῵Ӵ䕧䏃󱕘Ё䖬󱳝L/2ⱘ⬉󱛳󱄬󰳼ˈ䖭Ͼ⬉󱛳󱇚󱳝󰟽Ѣ󰞣󱇣LISN⬉䰏Ϟⱘ󰝅῵⬉󰥟DŽ⬉󱛳ⱘ󱛳󱡫䱣ⴔ乥⥛ⱘ󰹲󰡴㗠󰹲󰻻ˈ󱠔ҹ󰳼催乥㣗󰳈󰝙󱬜󱵰󱳈Ў󱯢󱰒DŽ㗗㰥󰠄⬉䏃Ё󰡴㺙њ󰝅῵Ⓒ⊶⬉󱛳󰧢ˈ⬅ѢⳌ󱇍Ѣ󰝅῵Ⓒ⊶⬉󱛳󱭄Ͼ

mH㟇󱭄󰤕mHⱘ⬉󱛳󰘐󱴹䇈ˈ󰝅῵䏃󱕘Ёⱘㄝ󱬜⬉󱛳ⱘ󱆍󰘐䕗󱇣ˈ󱠔ҹ󰟚ゟ⬉󱛳󱮴ḹBoost PFC󰩠㗺󰧜⬉󱛳󱮴ḹBoost PFC󱳔㒜ⱘEMI⌟䆩㒧󱵰Ⳍ󱏂ϡ󰻻DŽ󱅲䰙ⱘ⌟䆩㒧󱵰г󰷎󱴀偠䆕Ϟ䗄󰟚󱵤ⱘℷ⹂󱗻ˈ󰦖㗗󰳒6-26󰟚ゟ⬉󱛳󰩠㗺󰧜⬉󱛳ⱘ󱮴ḹBoost PFC⬉䏃EMI⌟䆩㒧󱵰ˈ⬅󰟚󱵤󰧃ⶹϸ㗙ⱘ󱏂῵󱑆󱡄󱐙󰘐󰷎󱴀ϔ㟈ˈ⌟䆩󱳆㒓ⱘ󰤎󰟿󰷎󱴀󱰃󰝅῵󱑆󱡄󱠔󱓩䍋DŽ㗺󰧜⬉󱛳󱮴ḹBoost PFC⬉䏃Ӵ󱇐EMI󰳼2MHzҹϞ󰴛↨󰟚ゟ⬉󱛳󱮴ḹBoost PFC㽕催ˈϡ䖛󱏂䎱󰳼5ϾdBҹ󰝙DŽϸ㗙⌟䆩󱳆㒓󰳼1MHz̚2.5MHz󰝙󱋄󰘐ԡ㕂󰩠󰻻󱇣ⱘϡ󰧠Џ㽕󱰃󰲴Ў㗺󰧜⬉󱛳ⱘ㒧󱵘󰩠󰟚ゟ⬉󱛳ⱘ㒧󱵘󰩠󱆘⫳󰦖󱭄󱏂󰟿䕗󰻻ˈ⬉󱛳䰏󱡫󱳆㒓ⱘ󱋄󰘐ǃ䈋󰘐乥⥛ϡ󰧠󱠔󱓩䍋ⱘDŽ

(a) (b)

󰳒6-26 󰟚ゟ⬉󱛳󰩠㗺󰧜⬉󱛳󱮴ḹBoost PFC⬉䏃Ӵ󱇐EMI⌟䆩㒧󱵰󱇍↨(a)󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃˗(b)㗺󰧜⬉󱛳󱮴ḹBoost PFC⬉䏃

Fig.6-26 Comparition of different inductor configurations(a) CM noise of Bridgeless Boost PFC with split inductors. (b) CM noise of Bridgeless Boost PFC with coupled inductors.

󱇍Ѣ󰤩Ͼ⬉󱛳㒧󱵘ⱘ󱮴ḹBoost PFC󱴹䇈ˈ󱅗ⱘ䴲󱇍⿄󱗻㒧󱵘󱇐㟈󰳼⡍󱅮ⱘ󰤞Ͼ󰨼󱳳󰝙󰝅῵󱑆󱡄󱋄󰘐󱰃󰲯⾡󱢧󱠥Ё󱳔󰻻ⱘˈ䖭⾡󱑆󱡄ϡҙ󱕅󰪡њEMI⌟䆩ⱘ㒧󱵰䖬󱇍⬉䏃ⱘ〇󱅮󱗻󰩠󱅝󰜼󱗻󱳝ⴔ䋳䴶԰⫼DŽ󱠔ҹ󱅲䰙Ё󰤩Ͼ⬉󱛳㒧󱵘ⱘ󱮴ḹ

Boost PFC⬉䏃󱰃ϡ󱓎䆂Փ⫼ⱘDŽ

㄀Ѩゴ󱦤󰟎䖛󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃ЁPFC⬉󱛳󰩠󱆘⫳⬉󱆍󱤃㤵ⱘ䯂乬DŽ󰳼󱴀㡖󰟚󱵤ⱘ㒧䆎Ё󱑊≵󱳝⍝󰦞䆹󱤃㤵ⱘ󱕅󰪡ˈ䖭󱰃󰲴Ў󰳼EMI⌟䞣䖛⿟Ё

82

㄀󰝁ゴ󱮴ḹBoost PFC⬉䏃⬉⺕󱑆󱡄⡍󱗻ⷨお

󱖙󱅮ӮՓ⫼󰧜䗖ⱘⒸ⊶󰰼󱇍󱑆󱡄䖯㸠󱡥󰠊DŽ󱔧󰟚ゟ⬉󱛳󱮴ḹBoost PFCⱘ䕧󰜹ッ󱥹󰜹њ󰝅῵Ⓒ⊶󰰼󰧢䇤󱤃⦄䈵㹿󱡥󰠊ˈℸ󰠏󱅗ⱘEMI㸼⦄󱈅ϢϞ䗄㒧䆎ϔ㟈DŽ󱈑ㅵϞ䗄㒧䆎󱑊ϡ󱰃󰳼󱥹󰜹Ⓒ⊶󰰼󰧢󱕫󰠄ⱘˈԚ󱇚󱮴䆎󱰃󰝅῵䖬󱰃󱏂῵Ⓒ⊶󰰼󰴛ҹϔ󱅮ⱘ󱦦󰜹󱤳㗫󱴹󱡥󰠊󱑆󱡄ˈ󰟭󰳼Ⳍ󰧠ⱘEMIⒸ⊶󰰼԰⫼ϟϞ䗄㒧䆎ձ✊󱰃󱟤ゟⱘDŽ

6.4 󱮴ḹBoost PFC⬉䏃EMI⡍󱗻󱇣㒧

󱮴ḹBoost PFC⬉䏃ⱘ󰝅῵󱑆󱡄䯂乬󱰃Ⳃ󰠡󰦫󰠄󱑓⊯󰝇⊼ⱘ⛁⚍䯂乬DŽ󱴀ゴՓ⫼ㄝ󱬜⬉䏃󱮍⊩󰟚󱵤њӴ㒳Boost PFC⬉䏃󰦞ϝ⾡ϡ󰧠⬉󱛳䜡㕂󱮴ḹBoost

PFC⬉䏃ⱘӴ󱇐EMIⱘ󰤎󰟿DŽ⬅ӓⳳǃ󱅲偠󰦞⧚䆎󰟚󱵤㒧󱵰󰧃㾕󱮴ḹBoost PFC⬉䏃ⱘ󰝅῵󱑆󱡄󱯢󱰒㽕↨Ӵ㒳Boost PFC⬉䏃㽕󰻻ˈⳂ󰠡䖬≵󱳝󰧜䗖ⱘ󱡥󰠊󱮍⊩DŽՓ⫼Ӵ㒳ⱘEMIⒸ⊶󰰼󰦏󱡥󰠊󱮴ḹBoost PFC⬉䏃ⱘ󰝅῵󱑆󱡄󱖙󱅮Ӯ󱓩䍋䖛󰻻ⱘ󱤳㗫ˈ䖭󰦜䰡Ԣњ󱮴ḹBoost PFC⬉䏃󰳼󱬜⥛󱮍䴶ⱘӬ󰢓DŽ

󰳼ϝ⾡⬉󱛳䜡㕂ⱘ󱮴ḹBoost PFC⬉䏃Ёˈ󰤩Ͼ⬉󱛳ⱘ󱮴ḹBoost PFC⬉䏃⬅Ѣ󱅗ⱘ䴲󱇍⿄󱗻Փ󰝊󰳼󱅲䰙Փ⫼Ёϡ󱓎䆂Փ⫼DŽ㗠󰟚ゟ⬉󱛳󰩠㗺󰧜⬉󱛳󱮴ḹ

Boost PFC⬉䏃󱳝󰝊󰧘㞾ⱘӬ㔎⚍˖󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃ⱘ󰝅῵󱑆󱡄⬹󱇣Ѣ㗺󰧜⬉󱛳󱮴ḹBoost PFC⬉䏃ˈԚ󰟚ゟ⬉󱛳ⱘ㒧󱵘Փ󱕫󱅗󱄬󰳼䇤󱤃⦄䈵ˈ䖭⾡䇤󱤃⦄䈵Ӯ󱕅󰪡󰠄⬉䏃ⱘ〇󱅮󱗻DŽϡ䖛󱔧䕧󰜹ջ󱥹󰜹󰝅῵Ⓒ⊶󰰼󰧢䖭⾡⦄䈵󰷎󱴀⍜󰼅DŽ㗺󰧜⬉󱛳󰧃ҹՓ⫼䕗󱇥ⱘ㒩㒘䖒󰠄⬉䏃󱠔䳔ⱘ⬉󱛳䞣ˈ󱅗ⱘ䪰󱤳㞾✊㽕↨󰟚ゟ⬉󱛳㽕󱇣ˈ⺕㢃ԧ⿃г⬹󱇣DŽԚ㗺󰧜⬉󱛳ⱘ󰝅῵󱑆󱡄㽕⬹󰻻DŽⳂ󰠡󱴹䇈ˈϸ㗙󰴛󰧃⫼Ѣ󱮴ḹBoost PFC⬉䏃ЁDŽ

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󰤢󰤫⧚󱎹󰻻󱄺⸩󰺿󱄺ԡ䆎󱭛

㄀ϗゴ㒧䆎󰦞󱈩󱳯

7.1 󱴀󱭛󰲲乒󰦞󱘏㒧

󱮴ḹBoost PFC󱢧󱠥󱮴䳔Ӵ㒳Boost PFC⬉䏃ⱘ󱭈⌕ḹˈ䰡Ԣњ󱇐䗮󱤳㗫DŽ󰳼催󰡳⥛ǃ󰻻⬉⌕ⱘ󱑨⫼󰴎󰧜󱬜⥛↨Ӵ㒳Boost PFC⬉䏃󱳝󱯢󱰒󱦤󰤛DŽ󱴀󱭛Փ⫼󰝁ゴ䆺㒚䯤䗄њ󰝇Ѣ󱮴ḹBoost PFC󱗻㛑ǃ󱥻󰠊󱮍⊩ǃ⬉䏃䆒䅵󰩠⬉⺕󱑆󱡄ⱘⳌ󰝇䯂乬DŽ󰝋ԧ󰝙󱆍󱘏㒧󰽖ϟ˖

1ǃ󱮴ḹBoost PFC⬉䏃ⱘ󱥻󰠊⬉䏃䆒䅵Ⳍ󱇍ѢӴ㒳Boost PFC⬉䏃䕗󰻡󱴖DŽ󰲴Ў

䕧󰜹⬉󰥟󰩠⬉󱛳Ӵ㒳Boost PFC⬉䏃󱢹󱳝󱟤❳ⱘ󱥻󰠊󱮍Ḝ󰩠󱅠󰭘ⱘ󱥻󰠊㢃⠛ˈ

⬉⌕䞛ḋ󱮍⊩ㅔ󰤩󰧃䴴DŽԚ⬅Ѣⳕ⬹њ䕧󰜹󱭈⌕ḹ󱮴ḹBoost PFC⬉䏃ⱘ䕧󰜹⬉󰥟󰩠⬉󱛳⬉⌕䞛ḋ䛑↨䕗󰳄䲒ˈ󱴀󱭛Փ⫼ⱘ󰤩󰨼󱳳󱥻󰠊PFC㢃⠛󱮴䳔䕧󰜹⬉󰥟ⱘ䞛ḋ䴲󱐌󰧜䗖󱮴ḹBoost PFC⬉䏃Փ⫼ˈ䰡Ԣњ󱥻󰠊⬉䏃䆒䅵ⱘ󰻡󱴖⿟󱑺DŽ⬉⌕Ѧ󱛳󰰼䞛ḋ󱮍󱓣ⱘՓ⫼г㾷󰞇њ󱮴ḹBoost PFC⬉䏃⬉󱛳⬉⌕󰖵󰧋ⱘ䞛ḋ䯂乬DŽ󱴀󱭛󱳔㒜㒭󰟎њϸ󰼫󰷎Ѣ󰤩󰨼󱳳󱥻󰠊PFC㢃⠛ⱘ󱥻󰠊󱮍Ḝˈ󱅲偠㒧󱵰䆕󱯢њ󱅗ӀⱘӬ䍞󱗻DŽ

2ǃ㄀Ѩゴ䞡⚍󰟚󱵤њ󰟚ゟ⬉󱛳󱮴ḹBoost PFCⱘϔ⾡⡍⅞ⱘ䇤󱤃⦄䈵DŽ㒣䖛󰟚󱵤

󰧃ⶹ䇤󱤃⬉󱆍󰣙󱣀PFC󰡳⥛󰴄Ϣ󰻻󰴄П䯈ⱘ󱆘⫳⬉󱆍󰩠䕧󰜹↡㒓Ϣ󰻻󰴄П䯈ⱘ󱆘⫳⬉󱆍ˈ䇤󱤃⬉󱛳Ў󰟚ゟѢ䕧󰜹↡㒓ϞⱘPFC⬉󱛳DŽ䇤󱤃⬉⌕󰧃䖒0.5̚

1Aˈ乥⥛Ў300KHz̚600KHzDŽ䖭⾡䇤󱤃⬉⌕Ӯ󱕅󰪡󰠄󱮴ḹBoost PFC⬉䏃ⱘℷ󱐌󱎹԰ˈ䖬Ӯ󱓩䍋䖛󰻻ⱘ⺕󱗻󰜗ӊ󱤳㗫DŽ⬅Ѣ䖭⾡䇤󱤃⬉⌕󱈲Ѣ󰝅῵⬉⌕㣗⭈ˈ󰳼䕧󰜹ッ󰡴㺙󰝅῵Ⓒ⊶󰰼󰥇󰧃󱡥󰠊DŽ󱴀󱭛ⷨおњ󱮴ḹBoost PFC⬉䏃ⱘ⬉󱛳㒧󱵘䜡㕂󱇍䇤󱤃󱴵ӊⱘ󱕅󰪡ˈ󱣛󰟎󰦾󱳝󰟚ゟ⬉󱛳󱮴ḹBoost PFC⬉䏃󱠡Ӯ󰦥⫳䇤󱤃DŽ

3ǃ󱴀󱭛Փ⫼њㄝ󱬜⬉䏃⊩㒧󰧜䅵ㅫ󱴎ӓⳳ󱡔󱴃󰟚󱵤њӴ㒳Boost PFC⬉䏃󰩠ϝ

⾡⬉󱛳㒧󱵘ⱘ󱮴ḹBoost PFC⬉䏃ⱘEMI󱑆󱡄ⱘ⡍⚍󰩠󰤎󰟿DŽ󰟚󱵤㸼󱯢ˈPFC⬉󱛳ԡѢ䕧󰜹↡㒓ջⱘ䖭⾡⡍⅞㒧󱵘Փ󱕫󱮴ḹBoost PFC⬉䏃ⱘ󰝅῵󱑆󱡄Ⳍ󱇍ѢӴ㒳Boost PFC⬉䏃䕗ЎϹ䞡DŽ㗠ϸ㗙ⱘ󱏂῵󱑆󱡄󰷎󱴀ϔ㟈DŽ󱮴ḹBoost

PFC⬉䏃ⱘ󰝅῵󱑆󱡄䯂乬ϡҙՓ󱕫EMI⌟䆩㒧󱵰䍙󱷛ˈ㗠Ϩ󱇍⬉䏃ⱘ󱬜⥛г󱳝󱕜󰻻ⱘ󱕅󰪡DŽ䕧󰜹Ⓒ⊶󰰼Ёⱘ󰝅῵⬉󱛳䳔㽕󱡓󰦫󱕜󰻻ⱘ󰝅῵⬉󰥟ˈ󰝊⺕㢃󱤳㗫㽕↨Ӵ㒳Boost PFC⬉䏃Փ⫼ⱘ󰝅῵Ⓒ⊶󰰼催󱕜󰻮DŽ㢹󰟚ゟ⬉󱛳󱮴ḹ

Boost PFC⬉䏃ⱘPFC⬉󱛳Ϣ⬉󱆍CBП䯈ⱘ䇤󱤃󱳾㛑󱳝󱬜󱡥󰠊ˈ䖭⾡䇤󱤃⬉⌕󰳼Ⓒ⊶󰰼⺕󱗻󰜗ӊ󰩠PFC⬉󱛳⺕㢃Ёѻ⫳ⱘ⺕㢃󱤳㗫г󱰃Ⳍ󱔧󰻻ⱘDŽ󱅲偠

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㄀ϗゴ㒧䆎󰦞󱈩󱳯

Ё󱮴ḹBoost PFC⬉䏃ⱘⒸ⊶󰰼⺕󱗻󰜗ӊ󰩠PFC⬉󱛳󰴛↨Ӵ㒳Boost PFC⬉䏃Ёⱘ⺕󱗻󰜗ӊ⏽󱑺㽕催DŽ䆹䯂乬󱇍󱮴ḹBoost PFCⱘ󱬜⥛Ӭ󰢓󱰃ϔϾϹ󱋏ⱘ㗗偠ˈ㢹󱮴ḹBoost PFC⬉䏃ⱘEMIⒸ⊶󰰼󱤳㗫󱮴⊩󱥻󰠊ⱘ䆱ˈ䆹󱢧󱠥󱈅󱮴⊩󰟌󱰒󰟎󰝊󱬜⥛ϞⱘӬ󰢓ˈг󱈅≵󱳝󱅲⫼ⱘӋ󰘐DŽ

7.2 䖯ϔℹⷨお䞡⚍󱈩󱳯

ϔ⾡󱮄󰝈ⱘ󱢧󱠥㒧󱵘ⱘ󰦥󱈩󱈅󱰃㾷󰞇󱡔󱴃䯂乬󰧥󱅲䰙ѻ󰪕󱑨⫼䴴󱢶ⱘ䖛⿟DŽ󱮴ḹBoost PFC⬉䏃ҹ󰝊󱬜⥛ϞⱘӬ󰢓䌶󱕫њ󱑓⊯󰝇⊼ˈԚг󰲴󰝊⡍⅞ⱘ㒧󱵘󱇐㟈ⱘEMI䯂乬䖳䖳ϡ㛑󱑨⫼Ѣ󱅲䰙⫳ѻDŽ󱴀󱭛䰤Ѣ㆛󱐙󰩠԰㗙∈󱑇г󱳾㛑󱇍󱮴ḹ

Boost PFC⬉䏃󰘮󰟎󰜼䴶󰩠󱅠󱭈ⱘ䆘Ԅ󰦞󰟚󱵤DŽҹϟ󰞴Ͼ󱮍䴶󱰃󰧢㓁ⷨお󱠔䳔㽕󰣙󱣀ⱘ䚼󰟚䞡⚍˖

1ǃ㄀ϝゴЁ󱳒䯤䗄䖛“󰠡⊓䇗󰠊”῵󱓣ⱘ󰤩󰨼󱳳PFC󱥻󰠊󱮍󱓣DŽ䖭⾡󱥻󰠊󱮍󱓣󰧃

ҹ󰦾䞛ḋѠ󱵕ㅵ⬉⌕󰥇󰧃󱅲⦄PFC󰡳㛑DŽ󰳼󱮴ḹBoost PFC⬉䏃󱢧󱠥Ё䞛⫼䖭⾡󱥻󰠊󱮍󱓣󱇚󰻻󰻻ㅔ󰣪⬉⌕䞛ḋⱘ󰻡󱴖󱗻DŽ󰦾䳔󰳼󰡳⥛󰴄ϞІϔϾ䞛ḋ⬉䰏󰥇󰧃DŽϡ䖛Ⳃ󰠡ҡ󱳾󱳝Փ⫼䖭⾡䞛ḋ󱮍⊩ⱘPFC㢃⠛󱦤կՓ⫼DŽ䗮䖛DSP󱅲⦄䖭⾡󰤩󰨼󱳳PFC󱥻󰠊󱮍󱓣󱰃ϔϾ󰽑ⱘ䗝󱢽ˈ䳔㽕⊼󱛣ⱘ󱰃䖭⾡󱥻󰠊󱮍󱓣䳔㽕󱅠󰭘ⱘ󰨃󰡼⬉䏃󰩠乱󰻪ⱘ⬉⌕󱋄󰘐䰤󰠊⬉䏃󱴹󰤣󰡽⬉䏃ⱘℷ󱐌󱎹԰DŽ

2ǃ󱴀󱭛󱇍󱮴ḹBoost PFC⬉䏃ⱘEMI⡍󱗻󰘮󰟎њ䆺㒚󰟚󱵤ˈ󱣛󰟎њ䆹󱢧󱠥Ⳍ󱇍

Ӵ㒳Boost PFC⬉䏃ⱘϡ䎇DŽԚ󱰃󱳾㛑󰜼䴶󰩠󱳝󱬜ⱘ䖯㸠󱅲偠偠䆕ˈ㗠Ϩ≵󱳝⍝󰦞󱮴ḹBoost PFC⬉䏃Ⓒ⊶󰰼ⱘ䆒䅵󰩠Ӭ󰣪DŽ䖭󱇚󱰃Ҟ󰧢䳔㽕ⷨおⱘ󱮍󰧥DŽ󰧠󱯊䳔㽕󰘮󰟎󰟚󱵤ⱘ󱰃ˈ󱔧Ⓒ⊶󰰼⒵䎇њ󱮴ḹBoost PFC⬉䏃ⱘEMC㽕∖󱯊ˈ󰝊󱬜⥛Ϣ󰧠ㄝ㑻ⱘӴ㒳Boost PFC⬉䏃󱬜⥛ⱘ↨䕗DŽ䆹㒧䆎󱇚󱇍䆘Ԅ󱮴ḹ

Boost PFC󱰃󰧺󰝋󱳝󱅲䰙󱑨⫼Ӌ󰘐󰝋󱳝䞡㽕󱛣НDŽ

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