Power management

Hello Everyone, I am working on T-type PFC and I refer STSW-PFCBIDIR. May I know the reference for phase lock loop in STSW-PFCBIDIR 

Hello, I'm developing a wireless charger based on the STEVAL-STWBC86TX. When designing a new PCB based on the evaluation board, would it be possible to use the I2C converter of the STEVAL-STWBC86TX by removing the jumpers in order to program the new PCB?

I am using STGIB30M60TS-L for my BLDC motor control. But when  i am turning the motor ON , the current is increasing continuously resulting in overcurrent error. I am unable to find out where the error is present .How to find it out . I am using TSV994 for current feedback sensing.  

On the STEL12H24, but am not sure about the calculation for Rbleed:I am designing a 12V system.RBLEED [kΩ] = VIN / 20 – Rb (min)Rb would be about 95Ω (from Figure 14 in the datasheet)That would make Rbleed 12/(20-95) = -160Ω (negative makes no sense)But according to Table 2, Rbleed is minimum of 560?Can you clarify this please?

Hello. I need help to identify this ST component. I can see the ST logo top left. Text is like this from what I see:"ST      (some marking)   G CHG3      648"  

Hi Engineer, I purchased the part STPSC20065WY, and I found the pins of STPSC20065WY are oxidized with rust stains and have scratches. Could you suggest whether this is normal, and they are good to use?   Thanks a lot, Suri

One of our project we are using L9369-tr IC and we are trying to communicate with the IC using TC38X controller with SPI protocol. We are able to send the data but IC is always giving 0x8efffff6 data as a response and it is not valid data.   Could you please provide the solutions for that.   Note: IC of RST(EN_EL) and WAU pins are High. and it is not in sleep mode.  

Can I find the manufacture year from the bulk ID? Most of ST parts only indicate the last digit of the year, sometimes we just don't know it is 2013 or 2023. 

Hi, we are using L7987L IC top generate -15V from 24V input. However, we see repetitive failure in the IC. I have attached the waveform also (Green- Input Voltage, Pink- Vout). I am also sharing the layout for the same. Switching frequency we have kept around 470 kHz.

I have a custom board that uses the L6470 for driving step motors.  All motor functions are working fine.  Circuit attached. Picture attached.What I have noticed and concerns me is that in instances where the motors are off or not even connected the chip and my 440 uF caps on the VSA and VSB run at about 125F 52C.I have tried setting the bridges to HiZ with no effect.Why is this happening?What do I need to do to have the chip and caps run cool?Thanks for your help !!!

hello,I have STEVAL-DPS334C1 and STEVAL-DPSTPFC1. I am trying to put PFC code on STEVAL-DPS334C1 again. I load bin file via stm32programmer. then STEVAL-DPS334C1 crashes. I need source code to find where the error is coming from. Or if you have any suggestions, I would be glad.

Hello.When I measure between 5V_SCR1 and GND_SCR2 in STEVAL-DPSTPFC1 Hardware, I see 9V. And when I start via Switch, it goes into standby mode when the output is unloaded and reaches 300V. It never becomes 400V. I quickly turn the switch to the off position again. I quickly turn it back to the on position. This time, all the LEDs go off. Can you please tell the technical team where the error and problem may be?

Hello,  This VN5E006ASPTR-E FET has unencrypted spice model? Thank you.

We use the VNHD7008AY to control the motor of a cargo lift. The lift has an emergency switch, which disconnects the battery from the circuit.In case of an emergency cutout, the lift runs down while its motor generates a high voltage, which finally kills the VNHD7008AY.To solve that problem I want to analyse the generator voltage (Pin VCC) and shortcut the H-bridge in case the generated voltage exceeds a limit.This provides that the motor generated voltage passes the reverse battery protection transistor, so that it can supply the other parts of the circuit (microcontroller, etc).My question:If supply voltage comes from the motor side (Pin VCC) instead of battery side (Pin Vbatt), will the reverse battery protection transistor conduct so that voltage can pass from VCC pin to Vbatt pin?

Hi,I want to buy LDL212PUR LDO. I have 2 questions:1. Can it work reliably with ceramic capacitors?2. What are the recommended resistor values for voltage adjust version?I cannot find this information in the datasheet.Thanks,Adam

The TS3330AMR has a voltage reference, but the internal configuration of the IC is unclear.Is a reverse bypass diode, like the reverse voltage protection of a linear regulator, unnecessary?

So it looks like there are 2.5W or 15W reference designs, does anyone have a 5W reference design? 

hello comunity,i want design a motor controller with the stspin32g4.i have a question about the build in buck converter:i want use the stspin32g4 just with a 4s battery ca 15V and a 2 wire control ifc (servo pwm + ground).I want the stspin32g4 generate the power Vdd and Scref for the internal gate drivers with the internal buck converter.some body told me I not need the diode D1 and also not need the inductor 18uH what we see in the datasheet. because the used Vcc = 15V is so low. is this true? or should I add the diode and 18uH inductor? similar what we see in datasheet Figure 9 : 3.3 V LDO regulator supplied through VCC maybe some body can explain it. or even can add a pdf or picture with the circuit for stspin32g4 power management.thank you Frank

Hello, I whant to build a 3 phase meter from the EVALSTPM-3PHISO. The Data that is computed should be send to a display interfacing with an lcd1602 (HD44780). Later a graphical display will be used. But to get a product that is working we have to handle the firmware package that is downloadable for the evaluation board. We are looking for a description to the STSW-STPM004 Firmware. We have to implement functions like energy counting and tracking, saving data to a file during one day of measuring.We know that the firmware is not using the internal DFSDM (sigma delta filter) because the STM32F413 only has 2 hardware implemented filters. So we would need a documentation how this emulation is done in the firmware to build this solution for our use cases (Initialisazion of the STM32 clock and data channels for the 3 sigma delta ICs). Thank you in advance,BR  

Does the VN5T016AH-E handle short circuits with extremely low inductance/resistance without damage to the device? The datasheet states that there is a 53us turn-off delay which would result in 4J of energy in the FET in the case of a dead short with no input or output inductance ((36V)^2/16mohm*53us), which seems like it would completely destroy the device. We have enough polymer caps on our boards that we could realistically put a few joules in to the FET, so we'd like to know if we need to add some inductance.

Hello all, I am writing to inquire about a DC motor driver solution suitable for our application. We are currently using a DCX32L motor rated at 12V and 160W, and our main objective is to achieve constant torque, even during stall conditions. To this end, we are interested in a motor driver that offers software-controlled current limiting, allowing for precise regulation during the stall phase. Our application requires that the driver actively monitor the motor current and dynamically adjust its output to maintain a stable torque level without risking overcurrent damage. Specifically, we need a solution that integrates current sensing with an interface that permits real-time control via software. This capability is critical to ensuring both performance and the long-term reliability of our system. Could you

Hi, I am looking for SPICE model for L7987L IC. Please share if anyone has it.

What's the max current of the mosfet in the L6924D?We want to use AC adaptor to charge the battery and supply the system loading at the same time. So, we want to know the max current of power mosfet.Thank you. 

Imagine my susprise when i discovered ST actually offers a DAB "software" for their 25KW evaluation board using stm32G474RE. And i go to ST's website.And the only downloadables are binary files and a lazy one page .pdf

I believe the VCX comparator is designed to clamp the maximum primary current, but there is no equation in Figure 7 of the datasheet to describe the relationship between IFF, RFF, and line voltage. Without an equation for IFF, it is difficult to size the transformer.