摘要
为减小开关器件的开关损耗,提高开关频率,减小开关电源的体积、重量,提高效率,介绍了新型移相控制零电压开关PWM变换器(PSZVS PWM)工作原理,实现零电压开关的条件,并给出了由控制芯片UC3875构成的实用高频开关电源电路。
Reducing the switching loss of transistors and increasing the switching frequency, so that the vo - lume and weight of switching power supply can be reduced and the efficiency of the switching power supply can be improved,by introducing the operation principle of shifiting phase, zero voltage switching, the condition for realizing the ZVS and a practical high frequency switching power supply with UC3875 were given.
出处
《低压电器》
北大核心
2005年第4期50-53,共4页
Low Voltage Apparatus
关键词
移相
控制
零电压开关
控制芯片
shifting phase
control
zero voltage switching
control chip
