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
Viper comp design
Hello everybody,I need to user Viper115HS or Viper222XS vith 15V 600mA output at non isolated buck topology. I was designed my Fb pin with 130K Ohm and 11K Ohm resistors. But I can not find right Comp pin configuration. could you write capasitor and ...
L9945TR Mosfet Pre-driver peak drive current
Good afternoon ST engineer。I'm developing a DC motor control hardware using the L9945 in H brigde mode 。But facing a problem: the datasheet haven't any description about the Mosfet Pre-driver peak drive current when using external drive resistors...
Resolved! STPMIC1APQR does not always turn on.
I have a circuit with pmic STPMIC1APQR and STM32MP157DAA1 processor. For reference, I take STM32MP157A-EV1.There are cases when STPMIC1APQR does not turn on every time you turn on the power (1 time out of 20-50 turns on). At the same time, the input ...
Nucleo L476RG External power
Hello,I have a Nucleo L476RG that I plug onto a PCB that I designed (used as a power input) and to my computer (only used for data transfert).My issue is that I would like to plug both to the Nucleo, but only use the PCB for its power supply.Moreover...
Resolved! Help identifying SMD
Hi there, I was unable to find any matching for this part below, some bi-directionnal TVS I presume, but "L06" returns nothing.I need your help ^^ thanks.Nicolas.
Resolved! Powering usb-c device with power supply that doesn't support PD
Hi, i'm trying to power an usb-c device that needs 5v 2A, with a power supply (5v 8A) that doesn't support power delivery. For doing that i tried to use the evaluation board EVAL-SCS002V1 connecting the power supply wires (+ and -) to the green conne...
Viper222 going shutdown problem
Hello everybody,I was designed a SMPS with Viper222XS for my project. I need to 400ma current for my project. its start with 100mA at soft start and going to 400mA immidiatly after pushhing run button. But I have some problem at here. SMPS was goes t...
simulation tool for the part VNF1048F
Hi, I would like to know is there any simulation tool for the part VNF1048F?
I desperately need help with how to look at the specifications of the IC chip.
Hello.I want to control multiple solenoids using multiple FET switches and isolate all these solenoids from the circuit in case of trouble using large FET switches.But I got into trouble looking at the specs. I don't know how long the IC can withstan...
Why RC snubber is not recommended for the diode in the secondary output
I am using Viper27HD integrated circuit. RC snubber structure is not recommended for the diode in the secondary output on the datasheet and edesignsuite.Resonance occurs between the secondary leakage inductance of the transformer and the parasitic ca...
