Infineon ICE2QS03G35W砖形适配器参考设计

InfineonICE2QS03G35W砖形适配器参考设计Infineon公司的ICE2QS03G是准谐振PWM控制器,采用有源突发模式可获得低待机功耗(小于100mW),数字频率降低以获得较好系统效率,集成了500V起动单元,主要用在适配器/充电器,LCD监视器,机顶盒,辅助电源等.本文介绍了ICE2QS03G亮点和主要特性,框图,应用电路图以及采用ICE2QS03G,IPD60R600P6的35W砖形适配器参考设计板主要特性和指标,电路图,材料清单,变压器结构图,PCB元件布局图和PCB设计图.

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

ICE2QS03G产品亮点:

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应用:

Adapter/Charger,

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

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

图1.ICE2QS03G框图

图2.ICE2QS03G应用电路图

采用ICE2QS03G,IPD60R600P6的35W砖形适配器参考设计板

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

Thisisa35W19.0V/1.84AUSBadapterreferencedesignusingQuasiresonnantPWMICICE2QS03G,CoolMOS™

IPD60R600P6(DPAK),smallsignal

lowvoltage

MOSFET2N7002*2,andHighSpeedSwitchingDiode

BAS21-03Winashortbrickformfactorwithpeakpowerof45Wfor2msec.

35W砖形适配器参考设计板主要特性:

Implemented45Wpeakfor2msec(noV

out

dipping)

ACON/OFFOvershoot:1%ofnominalV

out

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

InputStandbypower<100mW@noload

Benefits:

ShortBrickadapterenable

portabilityandstorage

IntroduceDPAKintoadapterdesign

TargetApplications:

Adapter

35W砖形适配器参考设计板主要指标:

图3.35W砖形适配器参考设计板外形图

图4.35W砖形适配器参考设计板电路图

图5.35W砖形适配器参考设计板PCB元件布局图(正面)

图6.35W砖形适配器参考设计板PCB元件布局图(背面)

图7.35W砖形适配器参考设计板PCB设计图

35W砖形适配器参考设计板材料清单:

图8.35W砖形适配器参考设计板变压器结构图AO-Electronics傲壹电子官网：中文网：ALPSADIIRJRC/NJRKECHYPERLINK"/manufacturers-detail.