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您好,
看电路图和参照TIPD155设计一样。测试时接的负载是什么?datasheet 给出了如下条件下的step 响应曲线,从-10V到+10V要大概200us左右,您可以尝试测试在此条件下的响应曲线吗?与此曲线对比一下: