新型有源箝位软开关PWM控制器UCC289X的原理及应用

Principle and Application of New Active Clamp Soft Switching PWM Control Chip UCC289X

介绍了电流控制型芯片UCC289X的基本原理,设计出了基于该芯片的同步整流有源箝位正激变换器的实用电路。实验结果证明,该芯片具有较好的控制特性和稳定性。

The principle of the current mode control chip UCC289X is introduced, the practical circuit of synchronous rectification active clamp forward converter based on UCC289X is proposed. The effectiveness and the stability of the chip is experimentally confirmed.