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LM5146: MOS管驱动信号存在振铃

Part Number: LM5146

您好我根据LM5146设计28V转12V ,3A电流,电源并且根据LM5146_quickstart计算表格环路补偿,测量上下管驱动波形,在0.4A 时上下管波形都为方波,但是除了0.4A以外上管波形存在问题,并且输出电流2A时输出电压异常。