Power management

STC3115 fuel gauge is not Working(NACK returned when I read the device id from master) and startup failed

Hello Everyone, We are having an issue with STC3115 (fuel gauge). We are connect Nrf51822(as Master) and stc3115 (as slave). we are read the device address from 0 to 127 . we got (I2C device found at address 0x70) from slave (stc3115) and...

Overcurrent with STSPIN32F0A. We have made replicated the eval board on our PCB and the same firmware presents as an error

Hello. I'm trying to find the switching losses for the IGBT "STGB30H60DFB". I found different Methods. Details in Detail-Window... Any help?

Switching losses:1. P = f * (Eon + Eoff) --> P = 32000 Hz * (383 uJ + 293uJ) = 21,632 W2. Pswon = 0,5 * Un * In * Füein * tr/T --> P = 0,5 * 325 V * 8,88 A * 1,2 * 14,6 ns / (1/32000 Hz) = 0,809 W Pswoff = 0,5 * Un * In * Füein * tr/T --> P = 0,5 ...

What maximum frequency can STPS20H100CT switch? How to calculate it from the datasheet?

Hello,I'm building DC-DC chopper that will switch at 80 kHz, max current of 8 A, how can i know if STPS20H100CT will be able to switch this frequency or not? It's not in datasheet.

Please give information about following electronics parts. ST VU M X GP 909 ST VU M X GP 836

I have made a circuit using ST1S14 IC and i am unable to get the desired result. I want Iout to be atleast 1A. Can you help?

Can I have manual soldering specification with soldering iron (not reflow nor wave soldering) ?

I got soldering recommendation for reflow and wave soldering (flow).But I need recommendation or specification for manual soldering specification with soldering iron (not reflow nor wave soldering).Kindly can you please advise manual soldering specif...

LD1117 SOT-223 package pin definition

​Is pin 4 (the tab) electrically connected to any of the other pins? 

I am about to order STEVAL DPSLLCK1 evaluation board. I want to know that whether the Firmware modules provided with board contain C code files and if so are those accesible to make any changes?

Motor startup problem

I use FOC+Hall method and I have a problem with startup.When I start the motor, the motor has startup vibration.I try to adjust speed/IQ/ID Kp, Ki to make the startup stably.But it still has startup vibration.any suggestion for this kind of problem?T...