ADE7758 ISSUES

[INVENTER]

my names is Sidolphe , am imbedded system dev ,i designed a smart meter with stm32h750vbt,the mcu work well but the measurements part has issues, when i supply the ade7758 with it supply voltage 5v,it is becoming hot and draw more than 1,98A and the voltage drop to 3,2v .what cause that heat. I did every thing doing a star point between analog and digital ground ,also but the divider circuit on SPI pin but still the issue not solved.

 

[FvM]

Your ADE7758 is definitely gone and must be replaced, we'd need to see the complete circuit to understand why.

 

[D.A.(Tony)Stewart]

That sounds like a latchup event from a signal exceeding supply rails or power applied later than the signal or an ESD/EOS event.