Power management

Need help identifying the material of semiconductor SOA (safe operating area) for STPS3L40UF. Which material below? Silicon Silicon Carbide Gallium Nitride Other

Is there a way to read the motor position while it's moving, such as with a command like "run," "goto," "move," or any other command from the Powerstep01? Does the motor need to be stopped for the motor position to be read correctly? Currently, when I read while it's moving, I see very different values ​​appearing.

Hello allI don't know if this is the right sub-forum, I chose the one that seemed the closest.I've been spending a bunch of time trying to find the part number of a seemingly simple IC, but just hitting walls. I've Googled using the manufacturers name and the #, and looked on the 2 companies I use that are also official suppliers Digikey and Mouser, but the 432 number is way too vague.There's IC's with this # in it,like the STM micto-controllers, but they seem too big and complicated, this just generates an error code down a wire to a microcontroller circuit.It seems to be for a LED circuit sensor/ error feedback circuit in a Martin moving light(Concerts, light shows, etc).It seems 432 is the common # between the same IC on the same board on different units on the same board I replaced in the past that the IC was actually cracked (432wp, or 432wq), it has the ST logo on it. It's rectangular 4.3mm x 3mm(.169" x .118"), with 8 pins(4 per side) on the

Hi all, I am looking for two voltage references to produce two rails ( positive and negative) with low frequency noise.The voltage reference does not need to have a tight output voltage accuracy and long term precision. It needs to be stable over a 1minute period and this is why I am looking for low 1/f noise.The application is shown in this circuit and I need to get these two references to supply the voltage divider. So far I was supplying the divider with the same +/-5V used for the amplifiers and taken from two linear voltage  regulators ( L78L05ACUTR for the +5V L79L05ACUTR for the -5V): with this setup I get too much noise at the output of the second amplifier which can amplify up to a factor x57.  This noise is not coming from the opamp ( is a low noise opamp from a competitor OPA4205) or the input at pin3 which has been already proven to be noise-free. 

I'm reviewing the datasheet for the LM317 linear regulator, and it lists the equation for calculating voltage as:VO = VREF (1 + R2/R1) + IADJ R2If I plug in the numbers from my circuit (and neglect the error calculation), I get:1.25 * (1+(1400/400))  = 5.625VHowever, if I do a straight resistor-divider calculation assuming R1 = 400 and R2 = 1400, and assume 5.625V at the top of R1, I get Vref = 4.375. Swapping R1 and R2 (such at R1 = 1400 and R2 = 400) I get Vref = 1.25V with Vout = 5.625Furthermore, most linear regulators with an adjust pin set the output using the equation VO = VREF (1 + R1/R2)Which tracks with what I'm seeing in the math. Is there a typo in the datasheet, or is there something significant I'm missing in how much current the ADJ pin has on it?  

I have followed the design attached in PDF. It is from ST designsuit.I have used MYRRA 75032 flyback transformer. (Datasheet Attached)Optocoupler 140105146000 with CTRmin - 50%, CTRmax - 150%.So now problem is I am not able to get continuous Vout from flyback. There is hiccups. IC shutdown after every few cycles and restarts. As shown in VCC waveform VCC capacitor is charged till ~13V. IC turns on Switches for 2mSec Vcc goes till ~20V and switching stops. Vcc voltage decays, when it goes below 7V IC turn off. When it goes below 5V Vcc capacitor starts to charge itself by internal current source. Cycle repeats.My interpretation - Since IC restarts everytime at 13V (VCCrestart voltage). I can say IC goes into latch state while switching. But i cant find the reason for latching. Need some guidance.Other findings. Output is connected only to LED load. So I cant find much raise in VCS voltage. (Voltage across Current Sence

Hi everyone, I’m using the STGIB8CH60TS-E IPM in my motor drive design and trying to configure the smart shutdown (overcurrent protection) function using the CIN pin. As per the datasheet, the internal comparator reference voltage (Vref) is typically 510 mV (460 mV min, 560 mV max). I’ve used a 50 mΩ shunt resistor on the DC return path (between the negative DC bus and the IPM’s NU/NV/NW pins). Based on this: IOC=VrefRshunt=0.510.05=10.2 A (typical)I_{OC} = \frac{V_{ref}}{R_{shunt}} = \frac{0.51}{0.05} = 10.2\text{ A (typical)}IOC​

Which alarm to read if our motor skips steps while moving? The motor works fine for a period of time like for 4hours and then randomly starts to skip step while moving in forward direction whereas in backward direction it moves fine. We are using 1/4 step mode. Below are the parameters we have inputted:- POWERSTEP01_CONF_PARAM_KVAL_ACC_DEVICE_0 (48.5) POWERSTEP01_CONF_PARAM_KVAL_DEC_DEVICE_0 (48.5) POWERSTEP01_CONF_PARAM_KVAL_RUN_DEVICE_0 (45) POWERSTEP01_CONF_PARAM_KVAL_HOLD_DEVICE_0 (16.02)

Hello Team, We are using VN9E30F High Side Driver, when we try to communicate it through SPI, the SPI Error Bit of Global Status Byte is getting Set and Reset as well.  We are Following Below Configuration for SPI:- 

Hi, I wanted to ask the group if the demo code "SPC58EC - AEK_POW_BMSLV application for discovery" already includes automatic cell balancing, or if it doesn't, or if it needs to be enabled somehow. I was also interested in knowing if there was a GUI for this BMS.  

   Hello STMicroelectronics Support Team, I would like to make a custom wireless power transfer based project. I was trying to download the GUI (STSW-WBC2STUDIO). I am planning to use STEVAL-WLC38RX and the STEVAL-WBC2TX50. Please send me the software package asapThank you for your support. 

I have a powerSTEP01 driving a stepper motor with the coil current set to 2A. However, the current flowing in the coils is unstable when it is flowing in one direction:Sorry about the image quality - I have an old 'scope, so had to use a photo ;)The image shows the coil current as the motor steps. The current is stable at 2A when the coil is energised in one direction, but not in the other.Any ideas what can cause this?

Hi! We have designed a custom board using STWLC38 but its not working. We also have the Evaluation kit of STWLC38 and Im using the same coil to test my custom board. Im getting roughly 0.6V at VRECT pins after nearly every second.  I aslo have attached my schematics. Please help me out with this. Regards,

Hi,I am working with a battery pack and the BMS. I have connected everything correctly to the board and after a first run everything seemed to work properly, the board was receiving commands from the MCU through the translator ISOSPI, and the green led blinked and remained on, signaling to be successfully in the 'normal' state. Later though, I had to disconnect the BMS from the battery pack. Therefore, I unplugged everything safely and separated the BMS from the batteries. Though, upon reconnecting the board to the batteries, the green led remained on for some seconds, and then went off, something that looked strange to me. Indeed, when I plugged everything back, MCU, translator and BMS, the BMS seemed to not respond anymore to the communication, and the green led D2 was always complitely off. I started to wonder why, and by looking on the datasheet I came to the conclusion that I might have entered the reset mode. Is it possible? I thought that could be either a sleep state

Hello,I am planning to use the SPV1050 in buck-boost configuration.According to the datasheet, in this mode the charging current (I_batt) has a minimum value of 30 mA.I have two questions:Why is this specified as a minimum value? Can the actual charging current in buck-boost mode exceed 30 mA?Does this parameter limit the current drawn from the solar panel?For context, my solar panel can deliver up to 110 mA (at 7 V_OC). I am wondering if the SPV1050 is suitable for this panel.Thanks in advance,

I am debugging a VIPer26-based flyback converter designed, which fails to regulate and is stuck at a lower voltages. The primary issue is a severely overheating RCD snubber resistor, indicating excessive power dissipation. Paradoxically, the Vds waveform on drain does not show a sharp, high-voltage spike; instead, the waveform appears to be clamped at a high level.My theory is that the reflected output voltage is much higher than designed. The snubber, which should only be clamping the fast leakage inductance spike, is instead being forced to conduct for a longer duration to clamp the entire primary voltage plateau. This would force it to dissipate an enormous amount of energy, explaining the extreme heat on the snubber resistor.Additionally, the VDD supply for the VIPer26 is

Edited by ST moderator. Please use English language in this community.   HVLED001Aを使用して、150W、AC85~264V、力率0.95のLED照明用電源ユニットの開発は、可能でしょうか? 可能な場合、効率は、どの程度になりますでしょうか？ 参考回路例等がありましたら頂けませんでしょうか？ 電源ユニットしては、非絶縁でもOKです。 150W品でコストをできるだけ安くするには、どのような方式が良いか、制御用ICも含めご教授願います。 、力率0.95のLED照明用電源ユニットの開発は、可能でしょうか? 可能な場合、効率は、どの程度になりますでしょうか？ 参考回路例等がありましたら頂けませんでしょうか？ 電源ユニットしては、非絶縁でもOKです。 150W品でコストをできるだけ安くするには、どのような方式が良いか、制御用ICも含めご教授願います。 Translation: Is it possible to develop a 150W, AC 85-264V, 0.95 power supply unit for LED lighting using HVLED001A? If so, how efficient would it be? Could you provide any reference circuit examples? A non-isolated power supply unit is fine.

The STEVAL-WBC86TX eval PCBA and the associated GUI appear to be no longer supported. Are there recommendations for proceeding to design with the STWBC86 Wireless Power Transmitter, without them?I am getting started with the AN5961 Wireless P Xfr Coil Design Application Note.

Hello, Please confirm if ECMF04-4HSWM10 is possible replacement for ECMF4-20A42N10?  ECMF4-20A42N10 is in LTB status and we need replacement part with "recommended for new design" status.Thanks,Quynh

I'm considering developing it with that kit.Can't I download the circuit diagram and firmware file?

HelloI want to control the torque of a PMSM (from a small micro-turbine). I guess that I should use FOC. I have found a Low-voltage high-current inverter motor board UM3489, but I do not know if it can be used for generators. It seems that it only works with motors. Theoretically there is not conceptual difference between both types of operation.I have also seen STDES-VIENNARECT, which has a Vienna rectifier, but it seems that is not valid for low voltatges (around 24, 48 Volts) Does anybody have any experience with this or any other inverter controlling a generator?Thank you

Regarding ST1PS02. Which is current drained from logic inputs D0 D1 D2 when connected to Vin?Is it safe to pullup them to VOUT, i.e., can it cause startup issues?Thanks for the attention.

i have an a GN108633 and i want to know the part number or datasheet

Hello,I'm working on implementing a wireless receiver charger design using your STWLC38JRM, and wondered if there were any tools or otherwise references to changing the supplied example BOM. In particular I'm looking to change the inductance of the coil as the 8uH specified has only one possible product currently available on Digikey and it is quite expensive per piece. Do you have any tools/references/simulations/etc. for tuning this LC circuit?

Hello Team,Please provide the PFC and LLC design calculation sheet for the STDES-2KW5CH48V.