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
  • 11454 Views
  • 22 replies
  • 24 kudos

Resolved! Component Identification

I believe this is a TRIAC based on the circuit it is in, but I cannot find any data on this device nor vendors having it in stock.  It's a TO-220 package, could someone please explain the ST part numbering?  Thanks! 

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JN3451 by Associate
  • 1400 Views
  • 2 replies
  • 1 kudos

Resolved! Help to identify a TVS?

I am trying to identify a transient voltage suppressor manufactured by ST that I need to replace.I have not been able to determine the correct product based on the coding found on the package. Would anyone here be able to identify this TVS?The coding...

PeterB1 by Associate
  • 2051 Views
  • 4 replies
  • 0 kudos

STUSB4710AQ1TR: Clicking Noise and Large Voltage Ripple at No Load

Hello,I am using the STUSB4710AQ1TR to charge some USB-C devices at the default 45W. I am operating in a mode that's only charging (no data communication). To do this, I used the recommended application schematic provided in the datasheet. My input v...

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KMew by Senior III
  • 1185 Views
  • 4 replies
  • 2 kudos

Resolved! Tantalum filter caps for LD1086?

The datasheet for the LD1086 specifies that I should use a 10 uF capacitor to filter the input/output of the device. The datasheet schematic for a typical application shows polarized filter caps. But the datasheet doesn't specify what type of capacit...

Viper 22L

Hi, I need to know whether do you use Viper 22L component? Please respond......

Resolved! STPMIC1 and ST-Link

Hello,Since I'm trying to design a relatively simple and mainly small STM32MP157FAD1 board (MPU, DDR3L, eMMC, WiFi+BT, microphone, speaker and display), something like a wearable motherboard, I'd like to ask if it would be possible to power the whole...

filip1785 by Associate II
  • 2116 Views
  • 6 replies
  • 5 kudos

Date Code for LM2903PT

We have received a part from ST Microelectronics. Kindly provide us with the date code and lot code information for the below part number. I have attached images of the received part for your reference.   

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Resolved! Spv1050 battery charging issue

    I have made a custom pcb of STEVAL-ISV019V1  circuit. In that ,we need to charge 3.7v lithium ion battery via USB supply and solar panel. When I connect USB supply or panel voltage as input voltage  the complete input voltage is coming in the bat...