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TPS56528: 请教下,TPS56528,5V输入,3.8V输出,负载开机状态200mA左右,峰值1A,样机开机工作正常,但是EFT fail

Part Number: TPS56528

因为要过EFT 群脉冲测试,所以我们在输入端串联了一个220uH的电感,就不正常了。系统不能开机。示波器看波形,原理图,如下。