Power management

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Wireless Charging solution Wiki

This Topic is used for Wireless Charging solution Mcu drive code GitHub - STMicroelectronics/STWirelessCharging-C-Drivers: Standard C platform-independent drivers for wireless charging ICs Python drive code, check attach file "Python_FT260_ST_WLC.7z...

willzhou by ST Employee
  • 6 replies
  • 3 kudos

L6699 incorrect startup

Hello, I have an issue with the L6699. The controller initiates the start-up sequence but after a few pulses it stops permanently.I describe the application first:Vin=385VVout=39 to 60 VTransformer magnetization inductance Lm=127uHResonant tank induc...

STWBC86 use for bi-directional communication

STWBC86 TX can be use for bi-directional communication, when rx send PP-packet as QI defined, STWBC86 update to 1251 version and use GUI to read i2c reg address 0x0100, and it can read RX PP-packet. https://github.com/STwirelesscharger/STSW-WPSTUDIO/...

willzhou by ST Employee
  • 2 replies
  • 1 kudos

SMPS working on 110V but not working on 220V

Dear Community,I was desinged a SMPS for my circuit which belowed picture. Its working on 110V AC and not any problem. But when I connect it to 220V AC output voltage is going down slowly and about 1 minute later its go to shutdown. I can not find an...

Mnemonic by Associate III
  • 0 replies
  • 0 kudos

LED1642GW Daisy Chain Problems

I have the LED1642GW in a daisy chain configuration I have 16 chips in chain.  If I try to set any other chip than the first directly it does not turn on, however if I set the first chip and then set it again it carries over to the 2nd chip and I mus...


L9963E, measuring battery AC Impedance or EIS

I'd like to use L9963E to measure the AC impedance of the battery at 1 kHz. It requires applying 100 mA current at 1 kHz to the battery and measuring the voltage at 1 kHz, probably with 10 kSample/second or more.  Is it possible? Or should I use anot...

DavidR by Associate
  • 3 replies
  • 0 kudos

SPV1050 Battery charging in case of loading

Hello there, I am planning to design an environmental IoT sensor node and i would like to incorporate the SPV1050 IC since it covers my project needs. I did extensive reading of the datasheet and there are some things I would like to get cleared:1. d...

PPats.1 by Associate II
  • 6 replies
  • 1 kudos


I have tried setup STM32G071 Sink port and connected with Apple 140w. I want to request 140W but it's seem STM32 not yet supported EPR mode in PD core. Do you have any examples for EPR in STM32?

H V N D by Associate III
  • 5 replies
  • 2 kudos