Power management

I bought STEVAL-DPSTPFC1 3.6kW PFC board, when i attached scope to test point 30 (PA5) to see IAC_SENSE, I just see half of the IAC according to attached picture? Why ? Do I need to turn the PFC on first and then turn the load on, what is the sequence?

STEVAL-DPSTPFC1

i need 60v 16 cells bms board

The impedance of LD39050PU33R from OUT to GND.

Hi, everyone I want to know the value of R1 and R2. It is LD39050PU33R, and the fixed output is 3.3V. I didn't find them in the datasheet. Please help.Best Regards

Hello team, I am now using STEVAL-STWINKT1 board to realize low-power online monitoring. But when I put the board into stop mode, the current consumption is still about ~10mA. Is that normal? And any solutions to reduce the power consumption? Thanks, Xiao

Hi, here are the steps I conducted:Disable all unused sensors; stop all timers; stop ADC. Enter stop mode: ( HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);Use LPTIM1 to wake up.And here are my questions:I used integrated current ...

STEVAL-IPM30B

Hello.Can this module work in configuration as typical H bridge with controlling only 2 phases for brushed dc motor? Trigerring signals for third phase would be grounded.I see that recomended input voltage is from 125V - 400 V DC. Can this modul oper...

L5987A Regulator Noise and Voltage issues

Hello,I am using an L5987A voltage regulator to power a ublox LISA-U200 cellular module as specified in the LISA-U200 integration manual on page 23, figure 7. I have been having issues regarding high noise under load and completely incorrect voltages...

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...