一种峰值电流模式控制的宇航开关电源  

A Peak Current Mode Control of the Space Switching Power Supply

作　　者：龙江 钟俊杰 孔昊 Long Jiang;Zhong Junjie;Kong Hao(Guizhou Aerospace Linquan Motor Co.,Ltd;National Engineering Research Center for Small and Special Precision Motors Guiyang,550008)

机构地区：[1]贵州航天林泉电机有限公司,贵阳550081 [2]国家精密微特电机工程技术研究中心,贵阳550081

出　　处：《电源世界》2018年第6期13-17,35,共6页The World of Power Supply

摘　　要：本文介绍了峰值电流模式控制开关电源的工作原理,并从理论上对斜率补偿的作用上进行分析,建立了峰值电流模式控制的小信号一阶模型。以UC1825为控制芯片的全桥变换器为例,着重从取样电路设计和斜率补偿电路设计来具体阐述峰值电路模式的开关电源的设计,同时基于峰值电流控制的小信号模型,设计全桥变换器的PI参数,最后通过产品结果验证了该设计的正确性。This article describes the operating principle of the peak current mode control switching power supply, and theoretically analyze the role of slope compensation,also established a small-signal first-order model for peak current mode control.Take the UC 1825 as a full-bridge converter for the control chip as an example,focusing on the design of the sampling circuit and slope compensation circuit to specify the design of the switching power supply for the peak circuit mode,designing PI Parameters for Full-Bridge Converters.Finally, the correctness of the design was verified by the product results.

关 键 词：峰值电流模式 全桥变换器 斜率补偿 UC1825 

分 类 号：V242.2[航空宇航科学与技术—飞行器设计]