Other Parts Discussed in Thread: TEST
I design a pd board by tps23750.
when i first connect to poe exchange ,it is can output 5v,but about 10 seconds later,the board can not output voltage.
test the voltage after electrolytic capacitorr ,it is 13.5v~19.5v .the tps23750 is very hot . electrolytic capacitor is also little hot. i think some circuit is broken because it is ok at first. when i power off and on the poe switch.it is never work correctly.i tried change tps23750,it cannot work .so how to do?