Power management

After Importing, I Can't Build the STEVAL-PTOOL2V1 Example Firmware in the Cube IDE. It seems like this should be an easy thing to do... what is the best way to import?

L7981 Random Dropouts

Hi, I'm looking for technical help on an L7981 voltage regulator issue. We have been using these for years in various designs with minimal issue. On a recent new prototype, I am having an issue I have never seen before, where on occasion the regulato...

How can I reduce L6472 Stepper Motor Noise due to harmonics?

I have a motor control PCB with x6 L6472PD stepper motor drivers on. 2 of the drivers are being used to drive NEMA17 "hybrid stepper" linear actuators that move a module along a linear guide. The two drive systems are laid out identically, and conven...

Measuring the frequency response of an optocoupler (e.g. PC817C) with different pull-up resistors using a Bode 100.

My test reference circuit is from Mr. Christophe Basso's book: "Designing Control Loops for Linear and Switching Power Supplies By A Tutorial Guide"The picture is showed as follow.Unfortunately, it may be a problem with my test circuit, or maybe the ...

I would like to know when I will be able to get hold of L6480 ICs from distribution

We have had 3 dates in the last month with different distributors where items have been shown as coming in and we have ordered; but when the date passes they become marked as 45 week lead.

SRC0GS22D POWER RESET

I am trying to reset the power by controlling GPIO3.3V.However, the initial power is ON and OFF only, and there is no control thereafter. 

PM8800 PoE Issues (high ripples)

We designed board with PoE capability using ST PM8800 chip. We encountered some problems.Issue #1When our board is powered from external power supply (Vin(AUXII)=32V) we get output voltage with high ripples and PM8800 nPGD is inactive (High). Ripple ...