要求输入电压为200V左右,最少160V。输出电压可以达到12V。功率要求不高,4W左右就可以了,最好是集成MOSFET的。不知道有没有这样的产品?
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可以考虑一下ucc28910,如果输出电流小于100mA又不需要隔离,可以考虑ucc28880。
UCC28910,集成FET和高压启动,flybuck