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
Power management
Discuss power management solutions. Ask questions and find answers on voltage configurations, short circuit protection, and programming.
Forum Posts
Resolved! STWBC86 Overheating
Hello, I've designed a PCB with a schematic nearly identical to the STEVAL-WBC86TX. The only modifications are a capacitor and coil size change, which I've also implemented on a development board for direct comparison. On the development board, my ...
is an output control switch of LED2001 practical
Dear Support/Expert I have a question about LED2001, is it practical to apply a relay to switch the LED off, but keep the DIM enabled. as in the schematic. if K21 is off, it will cut the current off of the output, but the DIM pin of the LED2001 is s...
SPV1040 not working as expected
I have this design using SPV1040 It uses SM102K06L solar panels, that have Vmpp = 3.35V, Impp = 0.406 A (Pmpp = 1.36W). The output must charge a 4.2 Li-Ion battery. At direct sunlight with one panel, I am measuring 0.39 A, and 1.81 V (voltage measure...
Resolved! Follow up Case: 00206525
Dear Support, This is Lindy From NKG GQA team and I would like to follow up on Case No. 00206525. We would like to understand if there is any update regarding the Smelter CID002645 and CID003470 removal as requested by WD. Could you please provide th...
Why STNS01 PUR does not switch to the battery when the chip is only connected to a battery?
Hello,I am using a STNS01 in my circuit for the power management. The problem is when I only have a charged battery (4.1 v) connected to the BAT pin, it does not switch to the battery voltage. As if the chip is in shutdown mode (I do not know why, th...
VIPER26LD 310VDC to 15VDC Converter Design Issue
Hi, I have used following STM reference design for the buck converter. When I power the circuit output doesn't stabilize. What am I missing? This is from. STEVAL-IHM023V3 Here is my design. Here is the layout Best Regards.
Electronic speed controller for Drones
I'm designing an ESC for a drone. I found STM's UM2197 design document. I have a question why this DC link capacitor design uses 2 Capacitors in parallel (P/N 35ZLH330MEFC10X12.5) of Rubycon.This capacitor has the following parameters: Ripple Current...
Resolved! Minimizing Current Consumption in High Voltage Divider Circuit
Hello everyone,I'm working on a circuit for monitoring the bias voltage of a GM tube, which requires a high voltage of 100V. I am currently using a OA1NP22C op-amp configured as a unity-gain buffer to read the divided voltage. To minimize current con...
How to sense Analog input from a Pin in STEVAL-TTM002V1?
I am usingSPC5 IDE with STEVAL-CTM009V1 (Eval Board) and STEVAL-TTM002V1 (Control Board), but not aware how to sense voltage from set of analog input pins (43). In STCubeIDE, it automatically gets generated after pin config, but in SPC5 its not gett...
Resolved! VN9D5D20FN frequently setting SPI error bit in global status byte, datasheet not clear on cause
I am controlling a VN9D5D20FN high side driver with the SPI2 interface on an STM32F373. I can communicate with the high side driver, and sometimes briefly get an output to turn on using SPI control. However, frequently the high side driver sets the...
