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TPS562200调试过程中的问题



1、VSYS接DC8V电源时,芯片发烫,经测量有3.27V电压输出,烧坏后经测量VIN脚与GND短路,焊下烧坏芯片,测量无短路。

2、VSYS接DC12V电源时,上电直接烧坏,多数是VIN脚与GND脚短路,还有SW脚与GND短路的情况。

3、断开负载,上电DC8V和DC12V均能正常工作,电压输出3.25V

4、负载不超过500mA。