摘要
本文给出了一种ZVS正激变换器的实现,该正激变换器采用最常见的控制芯片UC3842,无需复位绕组,只需外加简单的辅助电路,即可实现变压器磁芯的自复位和主开关的ZVS开启和关断,且该ZVS不受输入电压和负载变化的影响。本文对此电路进行了分析,并给出了PSPICE仿真结果和实现电路。
A ZVS forward converter is presented. The proposed circuit is able to achieve self reset of the power transformer without the use of the conventional tertiary reset winding.Only an universal controller IC UC3842 and a simple auxiliary circuit is employed, and its main switch can be turned on or off under ZVS independent of line and load condition.A steady state analysis of the circuit is given.A PSPICE simulation is carried out.A realization circuit is presented in lower price.
出处
《信息工程大学学报》
2002年第4期25-28,共4页
Journal of Information Engineering University
