This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

UCC256402: 调试问题

Part Number: UCC256402

0815.pdf使用UCC256402DDBR 制作一个电源,输入电压Vin=170-300Vac ,输出电压 +85V 1.0A & -85V 1.0A 。 在Vin=290Vac~300Vac的时候,输入电压第一次通电,无输出电压;然后关电再次上电,则输出电压正常,带负载也正常。在Vin=170-280Vac的时候,不会出现上面的情况,能否帮忙看看,是哪个地方参数设置的不太合适导致的,谢谢。