Power management

Reactive and Power all over the place when consumer is switched off or disconnected.

Setup:1. Using STPM33 eval board with shunt & 110V, connected to ~1500W/700W heater, connected as in Figure 8.2. Teensy3.2 connected using SPI.3. Heater is turned on and off and also connected/disconnected from the plug during measurements.4. Pooling...

shape of current waveforms measured at shunt

So, I'm expecting the voltage developed across the shunt resistor to be sinusoidal, but I'm having much difficulty measuring these on the STEVAL-ESC001. The shunts on that board are 10mOhms, and perhaps the current through the motors is too low to ...

L6480H, some of our prototypes are not starting because the driver bridges are in high impedance mode and will not go out of the high impedance mode when we send any motion command to the L6480H.

We are using L6480H, some of our prototypes are not starting because the driver bridges are in high impedance mode and will not go out of the high impedance mode when we send any motion command to the L6480H. We have not Over current event. Workin...

Hello, I am new to STPM34 eval board and trying to getting start to STPM34 eval software. Getting error "unhandled exception error while doing USB interface"

On opening the STPM34 eval software and connecting USB to UART to PC. Under Option>Interface> Communication, I selected Port type as USB and tried to open port.Error window pop up - 'unhandled exception has occurred' as shown in Fig. 2.This error rem...

How to read the Line Frequency and Power Factor in EVALSTPM34?

Hi All, I'm working on a project (Street Lamp), wherein we required some metering parameters. So, I've brought an EVALSTPM34 board for speeding up the development process. On the "STPM3x Evaluation software" I was able to read all the necessary param...

LDL1117S33R SCHEMATICS

Hello,I am using LDL1117S33R for one of my project. I want to convert 5 volt into 3.3V.Please find the attached schematics.Could you please verify the same ASAP?

ESC based on STEVAL-SPIN3201 and STSPIN32F0

Hello,I`m currently thinking of creating stripped down version of STEVAL-SPIN3201. I have a few questions before I can start with this project:Why is there STM32F103CBT6 MCU on the STEVAL-SPIN3201 evaluation board? I can`really see much purpose for t...

It the calibration for STPM32 performed at 50Hz still valid for 60Hz line frequency?

Dear all, we are using the STPM32, and we calibrate it with a 50Hz load. In some cases, customers need to use it at 60Hz. Is the accuracy obtained from the calibration still valid? On documents, I can't find this in formation.The only statement is: "...

Hi all, We are using fuel guage IC: STC3117IJT . when powerdown mode is activated It consumes around 2mA, but it should be 1 uA. What can we do to minimize the shut down current in STC3117IJT? Regards, Nirav K.

While we have set the register REG_MODE to 0x0B as well as 0x01 to minimize the powerdown current but no luck.As shown in attached picture we have observed below scenario.1) the pulse of 50msec to 440uA by every 11sec  2) pulse of 240msec to 210uA by...

How to calculate soft start time for buck converter ? I am using L4973 Buck IC with Input voltage in the range 30-40V and Output 23V.