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TPS562200调试过程中的问题

Other Parts Discussed in Thread: TPS562200

1、VSYS接DC8V电源时,经测量输出电压0V,VIN脚电压被拉低至2V,断电,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,烧坏芯片焊下测量无短路。

3、断开负载,上电DC8V和DC12V均有电压输出,电压输出3.25V

4、负载不超过500mA。