文档介绍：i摘要该设计主要应用电力电子电路技术和开关电源电路技术有关知识。涉及模拟集成电路、电源集成电路、直流稳压电路、开关稳压电路等原理,充分运用芯片KA7500B的固定频率脉冲宽度调制电路及场效应管(N沟道增强型MOSFET)的开关速度快、无二次击穿、热稳定性好的优点而组合设计的电路。该逆变电源的主要组成部分为:DC/DC电路、输入过压保护电路、输出过压保护电路、过热保护电路、DC/AC变换电路、振荡电路、全桥电路。在工作时的持续输出功率为150W,具有工作正常指示灯、输出过压保护、输入过压保护以及过热保护等功能。该电源的制造成本较为低廉,实用性强,可作为多种便携式电器通用的电源。关键词:过热保护;过压保护;集成电路;振荡频率;,powersupplyintegratedcircuits,DCcircuit,theswitchingregulatorcircuittheory,makefulluseofthechipKA7500BfixedfrequencypulsewidthmodulationcircuitandFET(N-channelenhancementmodeMOSFET)switchingspeed,nosecondbreakdown,thermalstability,:DC/DCcircuit,inputovervoltageprotectioncircuit,outputover-voltageprotectioncircuit,overheatprotectioncircuit,DC/ACconversioncircuit,oscillationcircuit,full-,withanormallightwork,outputovervoltageprotection,inputover-,practical,:thermalprotection;over-voltageprotection;integratedcircuits;oscillationfrequency;..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................