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各位好：我用UCC208070A的一款PFC现在带载的时候动态相应不怎么好，请问是改哪些参数可以加快动态相应。
电路图如下：电感量为250uH
空载-1A负载-空载的动态响应波形
空载-2A负载
2A负载-空载
空载-4A负载
4A负载-空载
