Hi support!
我们很多项目上用到了TPS562200,用于9V-5V,在测试过程中发现掉电瞬间出现5V上振荡现象,原理图和掉电时5V波形如下。
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Hi support!
实际上我们的项目电源分两级,第一级用的TI LM5116进行降压,电压从50V降到9V,第二级用TPS562200降压,从9V降到5V,50V电压掉电瞬间,5V上会有30ms的振荡。