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.

LM5116做48V转24V和12V电源,芯片发热严重

参数是webench里拿的,把C4调到500pF,12V能输出5A。C33调到1nF,24V能输出3A。不调的输出电流小。

现在电流还好,能满足目前使用,但芯片发热严重。求帮忙看下,感谢

测了下温度,空载时温度达到60度。通电一段时间后,坏掉了。12V输出点只输出2V,24V输出点只输出2.5V。

3857.电路图.pdf