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LM5149: 双相使用PWM波紊乱

Part Number: LM5149

使用LM5149做24V转12V双相20A使用时,发现次控制器温度超过60度就会造成PWM波紊乱,导致上MOS管一直处于导通状态,设计完全根据电源设计器来设计,是什么原因