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TI的工程师：
你好！我使用TPS53632G芯片搭建的半桥电路，主电不加，当辅助电源正常时，也就是+5V、+3.3V都正常，此时芯片5,6脚（PWM1,PWM2）输出恒为高（5V）电平。电流反馈脚为0，VIN（VBUS）脚不管加不加电压，这个现象没有变化，请问是怎么回事？能否解答一下。谢谢！
