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 2. Python drive code, check attach file "Python_FT260_S...

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willzhou by ST Employee
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  • 15 replies
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Diode IFSM estimation

HelloI need to estimate IFSM for certain current pulse.Does anyone know how to do it?I found this app note :Schottky diode avalanche performance in automotive applications (st.com)But it is not clear the method as intervals are weird :I ^4 x t = Cste...

Fausto2 by Associate II
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  • 3 replies
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Resolved! POWERSTEP01 : sense resistor

Regarding the shunt resistors connected to the SENSEA and SENSEB pins, the UM1829 has three 0.1 ohm resistors connected. Why is this? The datasheet says one 0.1 ohm resistor.Do I really need three of them?

naoki by Associate
  • 318 Views
  • 2 replies
  • 1 kudos

Can STUSB4710 act as a DRD?

Hi, Can PD Controller (STUSB4710) act as a DRD?STUSB4710 - Stand-alone USB PD controller (with short-to-VBUS protection) - STMicroelectronicsI believe that STUSB4710 cannnot operate as DRD (Dual Role Data), and can only function as UFP.If there is a ...

MMSK by Associate
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  • 2 replies
  • 2 kudos

Resolved! VNQ9025AJ Output pin Current capacity

Hey, probably a dumb question, but I couldn’t find it in the datasheet. Can each pin of the VNQ9025AJ handle 30A, or is that the rating for the smart switch as a whole with a limit on each pin? Honestly, I’m hesitant to believe a single pin can handl...

VIPer22A Isolated DC-DC Converter

Hi,When I was trying for DC-DC converter design, I have found this VIPer22A Isolated DC-DC converter design. I am having two queries here,1) Is still this technology in use?2) Can I get the details about the transformer which used here?Is there any n...

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Resolved! PowerSTEP01 VDDIO Connection

Hi,We are using the chip PowerSTEP01 in our design. In the datasheet, it is mentioned in the application diagram that the VDDIO pin can be powered from the VREG pin. However, the X-NUCLEO IHM03A1 evaluation board design shows that it is powered exter...

bmkc by Associate
  • 283 Views
  • 2 replies
  • 0 kudos

STP45N65M5 damaged

Hello. I am using your STP45N FETs in our power supply design for an audio amplifier and we are getting field returns with the STP45N65M5 part damaged. It appears that the gate and source have been shorted but I am not 100% sure. Do you have any insi...

arsaenz by Associate II
  • 718 Views
  • 10 replies
  • 0 kudos

Resolved! L5970AD DCDC schematic doubt

Hello,I am investigating in using L5970AD DCDC converter for a 12VDC to 3V3 need.It was advised to me by the ST DCDC online simulator.It's a 20 year old circuit but it it matches the budget, the additional BOM and the efficiency so I am interested.Bu...

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