Infineon ICE2QS03G35W磚形適配器參考設計

InfineonICE2QS03G35W磚形適配器參考設計Infineon公司的ICE2QS03G是準諧振PWM控制器,采用有源突發(fā)模式可獲得低待機功耗(小于100mW),數(shù)字頻率降低以獲得較好系統(tǒng)效率,集成了500V起動單元,主要用在適配器/充電器,LCD監(jiān)視器,機頂盒,輔助電源等.本文介紹了ICE2QS03G亮點和主要特性,框圖,應用電路圖以及采用ICE2QS03G,IPD60R600P6的35W磚形適配器參考設計板主要特性和指標,電路圖,材料清單,變壓器結構圖,PCB元件布局圖和PCB設計圖.

ICE2QS03Gisaquasi-resonantPWMcontrolleroptimizedforoff-lineswitchpowersupply.Thedigitalfrequencyreductionwithdecreasingloadenablesaquasi-resonantoperationtillverylowload.Asaresult,theoverallsystemefficiencyissignificantlyimprovedcomparedtootherconventionalsolutions.Theactiveburstmodeoperationenablesultra-lowpowerconsumptionatstandbymodewithsmallandcontrollableoutputvoltageripple.BasedontheBiCMOStechnology,theproducthasawideoperationrange(upto25V)ofICpowersupplyandlowerpowerconsumption.Thenumerousprotectionfunctionsgiveafullprotectionofthepowersupplysysteminfailuresituations.AllofthesemaketheICE2QS03Ganoutstandingcontrollerforquasiresonantflybackconverterinthemarket.

ICE2QS03G產品亮點:

Activeburstmodeforlowstandbypower

Quasiresonantoperation

Digitalfrequencyreductionforbetteroverallsystemefficiency

Integrated500Vstartupcell

Pb-freeleadplating,halogenfreemoldcompound,RoHScompliant

ICE2QS03G主要特性:

?Quasiresonantoperationtillverylowload

?Activeburstmodeoperationatlight/noloadforlowstandbyinputpower(<100mW)

?Digitalfrequencyreductionwithdecreasingload

?StartupcellforVCCpre-chargingwithconstantcurrent

?Built-indigitalsoft-start

?Foldbackcorrectionandcycle-by-cyclepeakcurrentlimitation

?AutorestartmodeforVCCOver-voltageprotection,VCCUnder-voltageprotectionandopenloop/over-loadprotection

?Latch-offmodeforadjustableoutputover-voltageprotectionandshort-windingprotection

ICE2QS03G應用:

Adapter/Charger,

LCDmonitor,DVDR/W,DVDCombo,Blue-ray/DVDplayer,Set-topbox,

AuxiliarypowersupplyforCRTTV,LCDTV,PC,Server,Printer,TV,Hometheater/AudioSystem,etc.

圖1.ICE2QS03G框圖

圖2.ICE2QS03G應用電路圖

采用ICE2QS03G,IPD60R600P6的35W磚形適配器參考設計板

Thisapplicationnoteisanengineeringreportofaverysmallformfactorreferencedesignforuniversalinput35W19Vadapter.TheadapterisusingICE2QS03G,asecondgenerationcurrentmodecontrolquasi-resonantflybacktopologycontrollerandIPD60R600P6,aseventhgenerationofhighvoltagepowerCoolMOS?.Thedistinguishingfeaturesofthisreferencedesignareverysmallformfactor,bestinclasslowstandbypower,highefficiency,goodEMIperformanceandvariousmodesofprotectionforhighreliablesystem.

Thisisa35W19.0V/1.84AUSBadapterreferencedesignusingQuasiresonnantPWMICICE2QS03G,CoolMOS?

IPD60R600P6(DPAK),smallsignal

lowvoltage

MOSFET2N7002*2,andHighSpeedSwitchingDiode

BAS21-03Winashortbrickformfactorwithpeakpowerof45Wfor2msec.

35W磚形適配器參考設計板主要特性:

Implemented45Wpeakfor2msec(noV

out

dipping)

ACON/OFFOvershoot:1%ofnominalV

out

Efficiency>87%@Vin=100V@FullLoadwith0.11?cable

InputStandbypower<100mW@noload

Benefits:

ShortBrickadapterenable

portabilityandstorage

IntroduceDPAKintoadapterdesign

TargetApplications:

Adapter

35W磚形適配器參考設計板主要指標:

圖3.35W磚形適配器參考設計板外形圖

圖4.35W磚形適配器參考設計板電路圖

圖5.35W磚形適配器參考設計板PCB元件布局圖(正面)

圖6.35W磚形適配器參考設計板PCB元件布局圖(背面)

圖7.35W磚形適配器參考設計板PCB設計圖

35W磚形適配器參考設計板材料清單:

圖8.35W磚形適配器參考設計板變壓器結構圖AO-Electronics傲壹電子官網：中文網：ALPSADIIRJRC/NJRKECHYPERLINK"/manufacturers-detail.