Power management

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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
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L6470 Switch Input

I am using a L6470 and everything is working fine with one exception. When I do the initialization of the step mode and configuration registers, if the SW input is low, then the initialization does not work. If the SW input is high, then everything w...

tborgoyn by Associate
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What is the difference between LDL212 and LDL1117

I was picking a 5V high-performance LDO for RF mixer, and found that the parameters of LDL212 are very similar to those of the LDL1117 two series, the specific models are LDL212PU50R and LDL1117S50R, I checked their PSRR and output noise is almost th...

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Resolved! Need help identifying specific PMIC.

Dear Community,I'm a repair technician and I trying to identify a damaged component made by STMicroelectronics.Based on the surronding components and circuitry its a PMIC/DC-DC Coverter but I cannot find this specifc one.As you can see, all the infor...

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BTA16-800BW

Triac snubberless (bta-16-800bw) does not require a snubber in the circuit?Or would installing a snubber in the circuit have a good effect?The difference between BTA16-800BW and CW is the gate current difference.Will the current specification selecti...

Issue with ST1PS02 step-down converter

We are currently using the ST1PS02BQTR for powering a compact main board with BT connectivity (STM32WB5MMG), an IMU, and other ancillary blocks (LEDs, charge pump for LEDs, passives). The system is powered through two AAA batteries connected in serie...

como221e by Associate
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SMPS Pulsing in hiccup mode

Hello, I have designed and assembled a SMPS based on the EVAL-STCH03-45W evaluation board. What I have noticed, is that the power supply is outputting 1 Hz pulses with short buzzing sounds. These symptoms usually mean the hiccup mode is activated. Ho...

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fing by Associate II
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L4986 startup problems with external VCC supply

I am evaluating a PFC with the EVL4986-350W evaluation board.To be able to use Boost coils without the extra winding I want to supply the VCC voltage from a buck converter connected to the output voltage. The voltage from the buck is 17V.I have tried...

Jan-A by Associate
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