About vvlad.1

vvlad.1 · 2022-12-05

I have a circuit with pmic STPMIC1APQR and STM32MP157DAA1 processor. For reference, I take STM32MP157A-EV1.There are cases when STPMIC1APQR does not turn on every time you turn on the power (1 time out of 20-50 turns on). At the same time, the input ...

vvlad.1 · 2023-03-28

I solved the problem. I replaced the LM22678 chip with the LM22673.The LM22678 chip did not have a soft start function. Sometimes when connecting, the 5V voltage at the moment of switching on sank and pmic did not turn on.

vvlad.1 · 2023-01-16

Your idea seems to work.I powered the pmic from another power source and the problem went away.Later I will try to programmatically change VINOK_HYS and VINOK_THRES and tell you if it worked or not.

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STPMIC1APQR does not always turn on.

Re: STPMIC1APQR does not always turn on.

Re: STPMIC1APQR does not always turn on.