Power management

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Isolated 10V power supply using viper222LSTR IC

Hi ST team,I have design the 10V isolated power supply design using viper222LSTR IC having universal input AC supply. Schematic of the circuit is attached here.When i am increasing the input voltage, voltage across the capacitor C7 maintain constant ...



I would like to know the working principle of the charger bump for MH98, as well as the working principles of CPOUT, CP1, and CP2. Why can the voltage of the bootstrap capacitor reach 11.3V when VDH = 6V? In other words, why can the voltage of CP rea...


Hello ST Team,We are observing that LEDs are minor glowing, during turn off condition due to leakage current. As per our application we are not not using any PWM configuration for LEDs. We are just making LEDs turn ON/OFF as per application requireme...

kadam_0-1713076004679.png kadam_1-1713076048300.png
kadam by Associate II
  • 1 replies
  • 0 kudos


Hi, I am MURALI SELVAM from India, We are plan to build the circuit for Battery Monitoring circuit for which I select L9963E so someone give me suggestion for ensure L9963E part number is suitable for my project, My battery spec is "6S 25200 mA/h so ...

murali by Associate III
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SPV1040T Not Working as intended.

Hello, I'm trying to use the SPV1040T MPPT IC to boost up the 1.5V I'm getting from the Solar Panel to 3.8V. When I Power ON the MPPT IC its output just follows the Input and i don't see any chances of voltage getting boosted up. Is there anything wr...

Stalin by Associate II
  • 16 replies
  • 1 kudos

USB Device Not Recognized for STBC08PMR

Hello,On my custom designed PCB, there is a USB port for battery charging and programming ESP32 microcontroller. When I plug in to the PC, I get "USB Not recognized" message. In addition, the two LEDs are light up. In the datasheet of the charger IC ...

AE104 by Senior
  • 1 replies
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STEVAL-L99615C demo load doesn't work

Hi,Now I work with the STEVAL-L99615C board and have some problem with it. I don't have an 5-cell board, so I connect charger and all needed saignals directly to the board. The board is configured to work in HS. GUI demo version 2.0.0.  Emb. version ...

MXliv.1 by Associate
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