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TL5001: TL5001不启动

Part Number: TL5001


我使用TL5001CD的芯片,用做boost电路中的PWM波生成器,但是TL5001芯片始终没有PWM波输出,测量5脚(SCP)的电压是2.5V,怀疑是短路保护了,但是不能确认是因为什么导致了短路保护。请各位专家老师进行指导。电路图如下图。