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...

For the RHFL4913A IC, can the NC pins (9,11,12,16) for the flat-16p be attached to ground without affecting the operation? Are these pins internally grounded?