PWM型高压电源的设计  

Design of a PWM Type High-Voltage Power Supply

作　　者：蒋立昕 刘步尧[1] 

机构地区：[1]中国航空工业集团公司洛阳电光设备研究所,河南洛阳471009

出　　处：《电光与控制》2013年第6期89-92,104,共5页Electronics Optics & Control

摘　　要：以CRT为像源的平视显示系统对高压电源的性能、效率、体积、重量等有很高的要求,PWM型高压开关电源因为具有体积小、重量轻、效率高等优点而获得了广泛的应用。对PWM型高压电源的原理、单元电路等进行详细的介绍。电路采用逆变方式,从27 V直流电压,经过功率变换、升压变压、倍压整流等环节产生所需要的高电压。电压的稳定调节通过安置在负反馈通道中的脉宽调制器SG1525A实现,其基本原理是,采样电路对输出电压进行采样,与基准电压进行比较后,引起PWM产生的方波宽度改变,控制功率变换器中开关管的通断时间,使得输出电压向相反方向改变,从而使输出电压保持稳定。The Head-Up Display（HUD） with a image source of CRT generally has high requirements to the performance, efficiency, volume and weight of the High-Voltage Power Supply （HVPS）. Having the advantages of small size, light weight and high efficiency etc, the PWM type HVPS has found a wide application. The principle and unit circuit of the HVPS was introduced. The contravariant mode was used in the circuit. The 27 VDC was changed into the needed high voltage through processing of power conversion, voltage boosting and transformation, and dual voltage rectifying. Stabilizing of the voltage was realized by using the pulse width modulator SG1525A.

关 键 词：平视显示器 高压电源 开关电源 脉宽调制 电源设计 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计]