文档介绍：NXPTEA1733GreenChipIII75瓦开关电源控制方案关键词:电源管理,AC/DC转换器,SMPSNXP公司的TEA仃33T,TEA1733P,TEA1733LT和TEA1733LP是低成本GreenChipIII75瓦开关电源(SMPS)控制器,适用于反激拓扑。采用固定频率模式和频率抖动,以降低EML输入电压12V到30V,保护包括过功率保护(OPP),输入欠压保护(UVP)和过压保护(OVP),输出OVP和超温保护(OTP)o控制功率达75Wo本文介绍了TEA1733X主要特性,方框图以及典型配置图和典型应用电路图。TEA1733(L)T;TEA1733(L)PGreenChipIIISMPScontrolICTheTEA1733T,TEA1733P,TEA1733LTandTEA1733LParelowcostSwitchedModePowerSupply(SMPS)controllerICsintendedforflybacktopologies・(EMI),)(L)includesOverPowerProtection(OPP).,VINSENSEandPROTECT,arereservedforprotect!(UVP)andOverVoltageProtection(OVP),outputOVPandOverTemperatureProtection(OTP)ponents・Atlowpowerlevelstheprimarypeakcurrentissetto25%-,:SMPScontrollerICenablinglow-costapplicationsLargeinputvoltagerange(12Vto30V)Verylowsupplycurrentduringstart-upandrestart(typically10pA)Lowsupplycurrentduringnormaloperation()Overpowerorhigh/pensationAdjustableoverpowertime-outAd