Power management

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Hey Community!Newbie here + first postIn the STEVAL-ESC001v1 can someone please explain what this portion of the schematic means/is doing (document attached)?Also how do you determine the max current draw of your Hbridges? Most I have seen just define a current, but don't actually explain how they arrive that those currentsThanks so much in advance!

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Hi, In one of our new application, we are using different ST make high-side power switches, to switch different loads at 12V DC (Battery Input Voltage Range : 9V to 16V DC), here is the detailsIs this architecture work switching of loads through high-side drives?Also suggest me any improvements on circuit application if any.Thank you.Regards,Gopala

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 To ask this question another way, what is expected at the output pins when Vs < 1.5V during power-up?I have a design for driving a linear actuator which uses the STSPIN220. My customer has an issue related to unexpected device power off, and those events correspond to power-on of the STSPIN220. During their investigation, they found significant voltage on the output pins immediately when the device is powered on (via a high-side FET to switch the voltage). While I can't confirm the behavior myself since I don't have hardware, I am told that there can be a voltage spike of >1V which occurs at the motor driver outputs, regardless of how STBY and EN are set. Part of the current working theory is that the driver is pulling signifcant current at this time, possibly due to both sides of the H-Bridge being enabled, and that is causing the regulator to drop-out. As far as the STSPIN220, it's been speculated that there is a point at which the outputs are powered before the threshold

 Hello,The input 1 and input2 signals will be fed from an STM32 but the problem is the signal sent from STM32 is 3.3V but the input to the IC is 5V. How do I convert the same? Please help.

We are using a L6470 to drive a stepper. We use the SW-Pin to hold the motor in stop condition. The SW-pin causes a hard stop on falling edge. To prevent the motor from running again also if the firmware would send a run command we provide a clock signal on SW-pin with roundabout 2,7kHz.Now it happens twice that the driver burst into flames.What happens exactly during the hard stop? From the view of the damage I think this is no overcurrent on the motor windings, but an cross-current through both high side and low side MOSFETs.Normally I would have expected the driver itself is safe for cross-currents. Could it be, that our clock signal on the SW-pin can bring the driver to an undefined condition wher we have both mosfets turned on?Do you have any other ideas, suggestions?

These 5 pcs were mounted on board and test for functional and found 1 component failed then we do x-ray to see what different for good and fail component is.​This is x-ray picture of the good and fail component.  There is some excess die/lead frame at the middle leg.​What is the cause of the failure? Is this situation normal？

Actually, In our production we are replacing TI's LDO P/N: TPS71701DCKR with ST's P/N: LDK120 / LDK130. With ST part the output of the the LDO are not present even other DC-DC Regulators/LDO which shares same Enable signal, are not able to output the voltage.Just to debug the issue we lift the enable pin of the ST's part (LDK120 / LDK130), we observed this time other than ST's LDO (LDK120 / LDK130) all LDO / Regulators are able to outputs the voltage. So, would you please let me know the current required by the Enable pin of the LDO (LDK120 / LDK130)?

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I don't need the motor control board, I have my own, I just need the power stage and the capacitor board.

Markings are 130 360 GK1H2 VU CHN 833 ST Logo I have not been able to get a hit on any searches. I have even tried Google image search. I do electronic repair and have devices where this component has been blown. Attach is a photo of the markings. Any help would be appreciated. Thank you.

so any solution..

Now, We are use VIPerA16 in the power supply circuit of the car. However, it is said that it cannot be supplied for new designs model. Is there a replacement?I hope AEC（Automotive Electronics Council) Standard grade.

I am developing software for an existing board that includes the STCS1A 1.5 A max constant current LED driver.Our board currently uses that chip with the PWM pin set to steady on or off only, and it works fine. We have many in production.Now we are considering sending an actual PWM signal to the PWM pin instead of a steady on or off.Our existing board has the EN (shutdown) and PWM pins tied together on the STCS1A. That seems reasonable for simple on/off, but may not be suitable where a rapid PWM clock is tied to the EN pin.When we try it, with a PWM signal tied to the ganged EN and PWM inputs, it works fine. LED power ramps up and down just as you would expect with varying PWM duty cycle.So our question is whether it is safe in the long run to operate the STCS1A with the EN and PWM pins tied together, where EN (shutdown) clocks the STCS1A on and off at the rapid PWM rate.Thank you.

I am using the same schematics as the datasheet's typical application schematics sugguests. The EN and PWM pin were tied together with Vin. When I connect it to 12V power, It went steady for a couple of seconds then it starts to flash, it turns off and on periodically. so I removed the drain capacitor and connect it across the LED string to Vin (as another question post discussed), it did not solve the issue. What is causing this flash?

Hello,I am using STCS1APHR constant current LED driver.CASE 1: I pull up Enable pin to VCC and pull down pwm pin to GND with 10K resistor.CASE 2: I pull Down Enable pin to GND and pull down pwm pin to GND with 10K resistor. But in both cases the led gets turn on momentarily when i turns on the power supply. please help me to solving the problem.

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Hello all,In one of my project I'd like to use a STEVAL-IHM028V2 which requires the Altium project or any other PCB EDA project (I myself use Kicad). My target is to set up PCB thermal simulations and they require the 3D model of PCB.Bests,Gergely

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Hello, I want to design this kind of circuit using a Vline of 600V: I would need to use Triac model T2550-12T. For the R1, R2, R3 and C1, I know what are the values, but I was wondering what is the power of the resistors and the capacitors that I need to use for 600V nominal in entry. If I use the power equation, I find a power that is ridiculous. Im a student so I am trying to understand. Thanks for any help! Antoine  

helloI am studying by purchasing the EVALSTPM32 Board and connecting it to a PC via USB to Serial.If you look at the datasheet of STPM32, you can use the SYN and SCS pins to request a reset operation when booting the chip.However, the EVALSTPM32 board cannot control SYN when looking at the USB to Serial connection.In addition, DSP_CR3 SW_RESET also exists in the STPM32 chip.Question 1. What is the difference between reset using SYN and SCS and SW_RESET during chip booting?Question 2. When using UART communication of STPM32, is there any problem if SYN and SCS are connected to VCC?thank you.