Power management

Discuss power management solutions. Ask questions and find answers on voltage configurations, short circuit protection, and programming.

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EVAL-L9963E not configured

When configuring the system, firmware version 1.6 is detected correctly. However, when the configuration ID is set to 1 as mentioned in the manual, it is not acknowledged by the device (shown in red).

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SmartSwitch current sensing not working

Hello everyone,I’m having an issue reading the current sense (CS) output from a VND7040 using an STM32G473 ADC.When driving a DC motor with PWM:• At ~50% duty cycle, I measure around 500 mV on the CS signal (after RC filter) using an oscilloscope• At...

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Does "MJD31CT4" meet UL94 V-0 rating?

Hi, I'm checking the flammability specifications for MJD31CT4. I need to know if the molding material of this part is rated UL94 V-0. If it's not V-0, could you tell me what the official rating is? Any link to a supporting document would be much appr...

kwak by Associate
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Using STEVAL-IPM15B as both inverter and rectifier

We are students that are trying to make a multi frequency power system interconnection model with a dc link similar to real life back to back hvdc, and we need a converter that supports bidirectional power transfer, is it possible for STEVAL-IPM15B t...

L6981(C50DR) dies on hard switching of input power

Hello everybody,I'm using an L6981C50DR for supplying a small board with 5V. The schematics is attached and should be perfectly conform to what is described in the specification from https://www.st.com/resource/en/datasheet/l6981.pdf as "Figure 4. Ba...

Resolved! STEVAL-ISC004V1 PDO Configuration Not Working

Using the NVM configuration utility for the STEVAL-ISC004V1 seems to program fineHowever regardless of what I am writing the to the NVM, the source capabilities on the device dashboard never change and always show 3 PDOs for 5, 9, and 15 volts.   

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