摘要
通过分析建立反激变换器小信号模型,提出了一种新型反激变换器补偿控制方法,分析了基于UC3842的反激式开关电源用于输出直接反馈的可行性。实验表明,与传统的控制方法相比,该设计具有动态响应快、闭环增益高、稳定性好、电压纹波小、负载调整率低、电压调整率低的优点。
Abstract： Through the analysis of establishing flyback converter small signal model, the paper puts forward to a new flyback converter compensating control method, and analyses the feasibility of flyback type switch power used in output feedback based on UC3842. Compared with outperforms conventional control method, this method has quick dynamic response, high stability of closed- loop gain, good voltage ripple, small load regulation rate amt low voltage adjustment rate.
出处
《微型机与应用》
2011年第19期24-27,共4页
Microcomputer & Its Applications
关键词
小信号模型
反激
补偿控制
开关电源
PWM
small signal model
flyback
compensation control
switch power supply
PWM
