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! Identify this two terminal component
I'm trying to identify this two terminal components. It has these identifiers on it "CBJ GP 950", but there is a chance the GP is a 6P, but G looks correct. There are not cathode markings so I'm guessing it's not a diode, unless it's bidiretctional. ...
Resolved! L7987 ripple issue
HI Sir，we have two different results of the ripple noisebase on same PCBA design, but different L7987 origin:1. Mark of "ST e3 G9207，L7987， CHN 3L0"，ripple noise 2.2V 2.9KHzinput 24V， output 12V， load 5ohm 2.4A 2. Mark of "ST e3 7B658， L7987， PHL 037...
Resolved! Nmos transistor problem
Good morning; I want to do a simple relay controlled by my nucleo board; so I did a simple circuit with the STP55NF06L; however, it does not work as expeted, in real ife, even when I am not sending voltage to the gate, the transistor conducts electri...
request for SPICE model for T2535T-8I
Hi! I need a SPICE model for T2535T-8I. I couldn't find it anywhere. Please help! Thank You!
STUSB4710 on a 3 port USB hub
Hello,I want to use 3x mentioned devices in a usb hub to deliver pover to peripherals.Does anyone has experience with something like this? Can it negotiate with three different devices or it will cuse some trouble.? Best regards, Mrdjoni
Viper35 waking up issue.
Hello,For the past few days, I’ve been trying to operate the VIPer35 quasi-resonant offline high-voltage converter, but I haven't been able to get any output. I attempted to bypass or disconnect the output of the PC817 optocoupler and also tried sho...
STP40NF20 Drain voltage oscillation issue
Hi, We have build a led driver circuit using STP40NF20 -- 2 nos in parallel, the issue i am facing oscillation issue in Drain pin (Vled ), So kindly support in this regards..
ST1PS02D1QTR VOUT2 Output Discharge
I have ST1PS02D1QTR (output discharge disabled variant). However, I am observing that if AUX = low but external 1.2V is applied to VOUT2, I get power dissipation that seems in-line with output discharge resistance on VOUT2. My question is this: does ...
L4931 Output Capacitor
A design I am debugging is utilizing Y5V dielectric capacitors on the input and output of the L4931. There is a 2.2uF capacitor directly at the output and another 2.2uF capacitor on the other side of an ~4 Ohm resistor that analog supplies are used o...
STEF01 Output Clamp 32V Max?
I have recently designed the STEF01FTR into a design that sits on the main input rail. The input is specified to run from 9V-48V. As a result the output VClamp is set the 52V max by setting R122 to 560K and R126 to 10K. When our initial FAI boards ar...
