Because of the Thanksgiving holiday in the U.S., TI E2E design support forum responses may be delayed the week of Nov. 21. Thank you for your patience.

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TIDA-00978: when the voltage of D1-pin2 exceed 24V, the output voltage of OPA857-pin8 will be 0V, why?

Part Number: TIDA-00978

In my tests, when the voltage of D1-pin2 exceed 24V, the output voltage of OPA857-pin8 will be 0V, why? All of the devices have not been destroyed. When I decrease the voltage, the PCB can return to normal(the output DC voltage of OPA857-pin8 will be 1.83V).