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tps54525负载问题

Other Parts Discussed in Thread: TPS54525

TI工程师你好!

tps54525  Vin12V,Vout 5V,带载启动没有问题,把负载拿掉再插上5V就没有输出了,必需把12V断了让tps54525带载启动才行,请问是什么原因,负载电容太大吗?有没有什么解决办法,谢谢!