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TPS40210 24V升到100V MOS管发热严重 请大家指点下

Other Parts Discussed in Thread: TPS40210

最近在用TPS40210做一个升压的模块, 24V升到100V 电流600ma   上电后测量输出电压正常,上负载后输出仍然是100V,但是MOS管几秒就烫手,原理图是仿真得到的如下,请大家帮忙分析下!万分感谢!MOS管用的 IRFP4668 ,电感120uH