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
  • 2161 Views
  • 15 replies
  • 6 kudos

Resolved! Error Flashing firmware to STWLC98

Hello,I have developed my own evaluation Board for the STWLC98 Chip. When connecting the power suplly, the DC-Mode, which is on the IC when it is delivered, works in a correct way. But when I want to program the IC with the following firmware from th...

simonh by Associate III
  • 777 Views
  • 5 replies
  • 0 kudos

Resolved! EVALSTDRIVE101 - Questions about FET's gate circuits

Hello,I use ST's STDRIVE101 in a design to drive a three-phase BLDC motor and used the reference design EVALSTDRIVE101 as a design guideline. My design has a MOSFET switching frequency of 20 kHz and a MOSFET drain-source voltage between 36 and 42 V.I...

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mual by Associate
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  • 2 replies
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L6470 Low Speed

Is it possible to program the L6470 MIN_SPEED for a low value, set the acceleration and deceleration to zero and MAX_SPEED to zero to run at the set MIN_SPEED rate?

tborgoyn by Associate
  • 133 Views
  • 0 replies
  • 0 kudos

LED2001PHR based driver does not work

Posted on December 30, 2017 at 11:16I have a LED2001PHR based LED driver that is designed to drive a string of LEDs at 5.2V and 3A. When I apply power and the LEDs are connected, the LEDs flash for a fraction of a second and then go off telling me t...

STGAP2D Interlock

Hello,I have a problem with STGAP2D and the interlock pin.If the interlock pin is on GND, SD and Brake are high, INB is high and the INA is high for 1s after this time 10ms low, than again 1s high and again 10ms low and so on.The output A is only low...

STH by Associate II
  • 513 Views
  • 5 replies
  • 1 kudos

STC3117 Missing battery detection

If the IC is powered by the battery, how does missing battery detection work ? I am working on a product which will have a USB interface and a single cell Li-Ion battery with charging circuit and a gas gauge. I need to take care of scenarios where th...

Resolved! STWBC86 Overheating

  Hello, I've designed a PCB with a schematic nearly identical to the STEVAL-WBC86TX. The only modifications are a capacitor and coil size change, which I've also implemented on a development board for direct comparison. On the development board, my ...

MikeP by Senior
  • 1802 Views
  • 14 replies
  • 2 kudos

is an output control switch of LED2001 practical

Dear Support/Expert I have a question about LED2001, is it practical to apply a relay to switch the LED off, but keep the DIM enabled.  as in the schematic. if K21 is off, it will cut the current off of the output, but the DIM pin of the LED2001 is s...

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Dsun.21 by Associate II
  • 380 Views
  • 3 replies
  • 1 kudos

SPV1040 not working as expected

I have this design using SPV1040 It uses SM102K06L solar panels, that have Vmpp = 3.35V, Impp = 0.406 A (Pmpp = 1.36W). The output must charge a 4.2 Li-Ion battery. At direct sunlight with one panel, I am measuring 0.39 A, and 1.81 V (voltage measure...

doragasu by Associate
  • 227 Views
  • 0 replies
  • 0 kudos