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
  • 11408 Views
  • 22 replies
  • 24 kudos

How about SL-CNWLC05801V1?

At present, I have contacted the project about NFC power supply, but there has been no progress. The energy output through the EH pin of ST25DV has not successfully powered L4(MCU). Currently we know that SL-CNWLC05801V1 uses STM8, can its MCU be pow...

Suppress Inductive Energy when Triac Fired at any angle.

  The above waveform attached shows input sinewave which is stepped down using transformer and I am using voltage based zero cross detection for firing Triac. Above waveform shows TRIAC is fired at almost 10% of Positive and Negative Half cycle. I w...

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iso808 continuous current calculation

hello  I have gone through the datasheet of ISO808. In the datasheet  ILim is 0.7A but for Channel Output Current (continuous) it is mentioned as internally limited. could you please give data for that or Is there any formula to calculate per channel...

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sabari1 by Associate III
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Resolved! Looking fro high speed LED driver

Hello,Not sure that the product I'm looking for exist. It should behave like LED driver but after looked through different LED I didn't find a product that meet my requirements:can drive 1 ... 15 LEDs connected in serieshave a possibility to change c...

Pavel_47 by Associate III
  • 1456 Views
  • 3 replies
  • 0 kudos

LD1084 noise and spice recomendationss

Hello i want to use the LD1084 voltage regulator . I need to build a decoupling networks on the inputs and outputs of it. Is there are some recomendations regarding decoupling networks of this noise. Or if you have spice model of this component? Than...

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yefimv by Associate
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  • 1 replies
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Linear regulator ripple

We have a +/-12V regulated power supply as part of our board design.The board takes a 5V input and passes this though a TI DCP020515DU DCDC. This gives us +/-15V unregulated. Each 15V rail has been tested with loads up to 60mA (our requirement is 30m...

graeme1 by Associate II
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  • 6 replies
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[STUSB4500] Not able to get output in PDO2 with 3 PDOs enabled

Hi,I am facing a strange problem regarding the PDO2 output in STUSB4500. Inspite of setting PDO Number as 3 and configuring the PDO2 voltage and current values using the STSW-STUSB002 GUI, I am not able to get any voltage output at PDO2. The status L...

theAkash by Associate
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  • 1 replies
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Wireless modular phone case accessories

Hi. We need help to integrate wireless charging Capabilities to phone modules.Each phone will carry space for 2 magnetized modules.[ external battery / wireless earbuds / vaping ]Phone models are: s22 and 23 ultra 5g +( battery module to send power t...

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STDES-30KWVRECT Vienna Rectifier AC-DC Conversion

Hello all,In the STDES-30KWVRECT Vienna Rectifier power circuit, 1. Relation between Q1 and Q2 switching pulses are IN-PHASE, likewise I want to know, How Q1 and Q3 switching pulses are related ?2. What PWM technique is used to generate switching pul...

balu1997 by Associate II
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  • 2 replies
  • 1 kudos

Exposed metal on leads of SCTWA60N120G2-4

I'm using SCTWA60N120G2-4 for one of my power management PCB. However, I saw there is copper exposed on the component leads. Base on IPC 610-H requirement, exposed basic metal on component leads is defect, but it seems to me the expose metal is manuf...