Power management

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

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Wireless Charging solution Wiki

This Topic is used for Wireless Charging solution 1.Mcu C drive code: GitHub - STMicroelectronics/STWirelessCharging-C-Drivers: Standard C platform-independent drivers for wireless charging ICs    

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willzhou by ST Employee
  • 8400 Views
  • 19 replies
  • 18 kudos

Resolved! Calculate stepss for PowerSTEP01 (and L6480)

Hi, I am currently implementing software/firmware for the PowerSTEP01 chip and discovered a inconsistency in data sheet https://www.st.com/resource/en/datasheet/powerstep01.pdf. For parameter INT_SPEED (section 11.1.11 in datasheet) the equation does...

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Resolved! STSPIN32F0 Overcurrent detection R43 value

According to the reference circuit, R43 is 75kohm.Also UM2154 User manual said that R43 should be higher than 30kohm.What happens if R43 is 22kohm. Is overcurrent detected by STSPIN32F0?

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TYama.17 by Associate II
  • 1988 Views
  • 9 replies
  • 0 kudos

Diode IFSM estimation

HelloI need to estimate IFSM for certain current pulse.Does anyone know how to do it?I found this app note :Schottky diode avalanche performance in automotive applications (st.com)But it is not clear the method as intervals are weird :I ^4 x t = Cste...

Fausto2 by Associate II
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  • 3 replies
  • 0 kudos

Resolved! POWERSTEP01 : sense resistor

Regarding the shunt resistors connected to the SENSEA and SENSEB pins, the UM1829 has three 0.1 ohm resistors connected. Why is this? The datasheet says one 0.1 ohm resistor.Do I really need three of them?

naoki by Associate
  • 527 Views
  • 2 replies
  • 1 kudos

Can STUSB4710 act as a DRD?

Hi, Can PD Controller (STUSB4710) act as a DRD?STUSB4710 - Stand-alone USB PD controller (with short-to-VBUS protection) - STMicroelectronicsI believe that STUSB4710 cannnot operate as DRD (Dual Role Data), and can only function as UFP.If there is a ...

MMSK by Associate
  • 424 Views
  • 2 replies
  • 2 kudos

Resolved! VNQ9025AJ Output pin Current capacity

Hey, probably a dumb question, but I couldn’t find it in the datasheet. Can each pin of the VNQ9025AJ handle 30A, or is that the rating for the smart switch as a whole with a limit on each pin? Honestly, I’m hesitant to believe a single pin can handl...

Resolved! VIPer22A Isolated DC-DC Converter

Hi,When I was trying for DC-DC converter design, I have found this VIPer22A Isolated DC-DC converter design. I am having two queries here,1) Is still this technology in use?2) Can I get the details about the transformer which used here?Is there any n...

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Resolved! PowerSTEP01 VDDIO Connection

Hi,We are using the chip PowerSTEP01 in our design. In the datasheet, it is mentioned in the application diagram that the VDDIO pin can be powered from the VREG pin. However, the X-NUCLEO IHM03A1 evaluation board design shows that it is powered exter...

bmkc by Associate
  • 478 Views
  • 2 replies
  • 0 kudos