Power management

stpmic1 enter to unknown state when the board is powered with a specific ramp and is unable to power up

Hello,we are making qualification stress tests on our custom STM32MP157 board. One part of these tests consist to power the board with custom ramps that simulate the worst power scenarios (as glitches, slow ramp, brownout and blackout).We use the P/N...

Resolved! Will STPMIC1A will be damaged, if we apply 3V3 on LDO2 (default 1V8) for very first boot?

Hi,we want to use the STPMIC1A for supply of an STM32MP157 custom board and its LDO2 to supply a SD Card. At the moment, a flashing proccess during EOL is not planned and my customer wants to boot from SD Card.As this LDO2 is programmed as 1V8 by fac...

Resolved! STPMIC1APQR does not always turn on.

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 ...

STPMIC1 I2C program

I have a STPMIC1E on my board, it is used with a STM32MP157 chip. I am currently trying to program the PMIC IC via the GUI but it won't connect to the bus. It says USB to I2C bus not connected. Any ideas?Thanks

STPMIC1 simulation models

Hello all,I'm designing a custom board based on MP1 familly and I'm using the STPMIC1APQR PMIC. To validate my design, I would like to simulate it. Is there any SPICE (Or IBIS etc) model of the PMIC available that can allow me to progress on that po...

Resolved! What is the nest best replacement for the STPMIC1APQR?

I would like to start a project with the STM32MP157D microprocessor but cant find the power management chip due to supply issues and I do not know any suitable replacement.Thanks!

Resolved! What should I do with STPMIC1 unused pins ?

Hello,I'm designing a board based on STM32MP1 and we decided to use the STPMIC1A to manage the power. The board is really simple and so we use only the bucks (1 for core, 2 for ddr, 3 for vdd and 4 for extra 3.3). All others (LDOs; boost and switches...

STM32MP1 not recovering on variable power SUPPLY, start from 0v to and rise to 5V and vice versa.

STPMIC1APQR is a PMIC, how to recover from lock state, as the STM32MP1 RTSn pin is not going to HIGH , and this situation on power variable supply decrease down to 1 v and then back to 5 v1. no log is observed on console during not power up variable ...

I plan to use an STPMIC1 to power a STM32MP157A with DDR3L. The only PMIC in stock is the STPMIC1E. For this particular case, will we have to pre-program the STPMIC1E before on a JIG tester or can it initially power the MPU which then programs the PMIC

Port SPN3 motor-control examples to DK2?

We are considering using a combination of the stm32mp157 and several powerSTEP01 devices in a system with multiple stepper-motors.The X-NUCLEO-IHM03A1 plugs into the -DK2 just fine, but the SPN3 examples only work on the F0xx, F3xx, F4xx, and L0xx se...