首页 > 150W通信开关电源设计

150W通信开关电源设计

发布时间：2024-04-07 20:57:35 来源：文档文库

小中大

字号：

手机查看

摘要开关电源中应用最多的是反激变换器，是中小功率开关电源理想的电路拓扑。一般来说，与传统反激硬开关变换器相比，准谐振反激变换器表现出更低的开通损耗。作者深入研究了双管反激变换器稳态工作原理和优点。对主电路器件进行了参数设计和选型。并对双管反激电路的PWM控制电路进行了设计和参数计算，作者选用NCP1207的PWM控制芯片，实现准谐振控制。最后对其进行了MATLAB系统仿真，并对仿真结果进行了分析，给出了仿真结果，仿真输出电压为48.4V，误差只有0.8%，在额定功率下效率达到91%。综上所述，本文设计了输入电压范围265~355VDC，48V输出的双管反激电路，通过仿真，输出波形基本与原理分析波形一致。关键词：双管反激，NCP1207，PWM控制,MATLAB仿真I
AbstractThemostwidelyusedintheswitchpowersupplyisaflybackconvertercircuittopology,isamedium-powerswitchingpowersupplyideal.Generallyspeaking,comparedwiththetraditionalflybackhardswitchingconverter,quasiresonantflybackconvertershowopenedlowerloss.Theauthorstudiedtwotransistorflybackconverterworkingprincipleandadvantages.Themaincircuitparametersdesignandselection.Andthetwotransistorflybackcircuit,PWMcontrolcircuitdesignandparametercalculation,PWMcontrolchipusingNCP1207,realizethequasiresonantcontrol.FinallyhascarriedontheMATLABsimulation,andthesimulationresultsareanalyzed,thesimulationresultsaregiven,thesimulationoutputvoltageis48.4V,theerrorisonly0.8,undertheratedpowerefficiencycanreach91.Insummary,thispaperdesignedtheinputvoltagerangeof265~355VDC,twotransistorflybackcircuit,theoutputofthe48Vthroughthesimulation,theoutputwaveformwaveformanalysisandprincipleofconsistency.Keywords:Dualswitchflyback,NCP1207,PWMcontrol,MATLABsimulationII

本文来源：https://www.2haoxitong.net/k/doc/0b04c60f4835eefdc8d376eeaeaad1f3469311ae.html