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
  • 9982 Views
  • 22 replies
  • 23 kudos

Resolved! Maximum junction temperature for L78

Hello.I would like to know the maximum Tj value of L78.I think the junction temperature of silicon semiconductors is generally 150°C, but the data sheet states that the operating junction temperature range is 0 to 125°C for L78 and 0 to 150°C for L79...

Yoshi_ by Associate
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  • 1 replies
  • 1 kudos

Resolved! The difference between STTH20003TV1 and STTH20003TV

Hello Team,I found both STTH20003TV1 and STTH20003TV are available on the market.Unfortunately, I cannot find STTH20003TV1 in ST datasheet.STTH20003 - 300 V, 200 A Ultrafast Diode - STMicroelectronicsCould you provide the difference between STTH20003...

robertw1 by Associate II
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  • 2 replies
  • 1 kudos

stpd01 self destructs at 15V

I am using a STPD01 in a design for USB PD. Neat little part but I'm finding during testing that setting 15V output on this part immediately causes it's internal switching FET that most be located near the PVIN/VCC pins of the package to self destruc...

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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. ...

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jfalbo by Associate
  • 143 Views
  • 2 replies
  • 1 kudos

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...

L7987 CHN 12V 2.4A.jpg L7987 PHL 12V 2.4A.jpg L7987 CHN.png L7987 PHL.png
PZha.1 by Associate III
  • 1709 Views
  • 6 replies
  • 1 kudos

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...

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Jad by Senior
  • 78 Views
  • 1 replies
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L99LDLH32 modify Responder ID issue

Hi everyone,Good day!I'm currently working on modifying the Responder ID using CAN FD communication.I initially had a firmware running on an MCU that was capable of modifying the Responder ID. My goal now is to analyze the CAN FD communication from t...

rsiigod by Associate II
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  • 2 replies
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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  

miroslav by Associate III
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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...