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LM3150加负载波形SW口异常

Other Parts Discussed in Thread: CSD19531Q5A, LM3150

输入24-36v 输出10V 10A用的是TI参考设计  M1用的是参考的NVMFS6B14NL   M2 用的CSD19531Q5A  都是参考设计给的型号 但是在实际做出来在输出电压8.5v 电流到9.5A时  LM3150的输出波形就发生剧烈变形下面是波形

请问大家这是什么原因造成的啊MOS管和滤波电感和芯片都用铜块散热外加风扇吹但电流始终达不到10A 到9.5A就变形了