反激变换器是电池 CCD 应用程序

摘要：本文介绍了反激式电源转换器的设计，以操作CCD数码相机从四个AAA细胞等设备。MAX752和多个输出变压器送+15V，-7.5V和5V。第一孔型设计低输入电压下,了低效率和大电压峰值在Lx针。低电压与二极管被改善MOSFET运作。由于对非理想变压器行动反激刺受控制的缓冲网络。效率曲线显示大于50欧姆负载和5.25V输入为80%。MAX752操作170khz。输入的电压范围为3.5V到6.5V。

Maxim>AppNotes>BATTERYMANAGEMENTKeywords:ccd,chargecoupleddevices,smps,powerconversion,transformer,flyback,powerconverter,Jan31,2001snubberAPPLICATIONNOTE665FlybackConverterServesBattery-PoweredCCDApplicationsAbstract:ThisarticledescribesthedesignofaflybackpowerconvertertooperateCCDequipmentsuchasdigitalcamerasfromfourAAAcells.TheMAX752andamultipleoutputtransformerdeliver+15V,-7.5Vand5V.Firstpassdesignhadlowefficiencyatlowinputvoltages,andlargevoltagespikesontheLxpin.MOSFEToperationisimprovedatlowvoltagewithdiodes.Flybackspikesduetonon-idealtransformeractionarecontrolledwithasnubbernetwork.Efficiencycurveshowsgreaterthan80%witha50-ohmloadand5.25Vinput.TheMAX752oper