Power management

How to use battery on B-L072Z-LRWAN1?

I found jumper jp9 for section TCXO to VDD or extrnal TCXO power but not sure set mode to use battery holder BT1. Please advise me. How to use battery on B-L072Z-LRWAN1.

SPV1050 behavior after UVP threshold

Hello,I would like to know what supposed to happen after the UVP threshold.During my test, I put a load at the LDO2 output and after the UVP threshold (Vbatt at 3.7V) I removed the load. After that, I put a solar pannel on Vin. I don't know why but t...

Issue with starting VIPer35 flyback

I'm facing a strange situation with VIPer35. First, I bought STEVAL-ISA183V1 evaluation board to got an idea how VIPer35 works. Then I made my first prototype PCB using custom made transformer that also works fine. But when I use the same schematic (...

Does ST2100 is ISO15118 certified?

https://www.st.com/en/interfaces-and-transceivers/st2100.html

Finding issues with STP45N65M used in a 500 kHz HB LLC Resonant Converter

Hi We are using a  STP45N65M for a 500 W HB LLC operated at a frequency varying from 250 kHz to 500 kHz. We are using a driver SI8273 ( 4 A Isolated driver) with a Rg of 2 ohms. We are facing the following issues.We were not able to get a rise time ...

STPM34 Active Power and Power Consumption Issues

Hi guys,I'm using STPM34 ASSP IC and get some issues. Hope you can give me a help. I followed it documents and recommend design.I’m trying to use your evaluation firmware in order to interfaces with STPM34 by using an external MCU (STM32F15) through ...

BLDC Error FOC with ST Motor Control Workbench

Greeting!First of all I'm quite new and not really familiar with the STM products.I want to control a BLDC motor (Turnigy Multistar 4225-390Kv 16Pole) with the Steval-spin3201.When I connect the ST MotorControl Workbench with the eval-board and press...

Hello , i have the ic spv1040 , and I have one problem in my design : The integrated circuit supports from datasheet around 5.5V input , but my solar panel have around 6.5V (Maximum power 1W) in full sunny day .

How can i manage this ? Does the circuit sustain voltages in range of 5.5-6.5 ? I need an extra electronic circuit for ic to work properly ?

Figure 8 in the data sheet for part number STUSB4710 shows the inductor value to be 68µH. This seems large. Is it possible this should be 6.8µH?

Detailed Specification of the buck converter in STSPIN32F0/F0A?

Hi, guysI am the newbee in using stspin32f0, so i had a question on buck converter which is integrated in it.​Since i use a 10uH inductor (typical value is 22uH in the AN5128), VDDA will shutdown when VM=18v~20v.And, after replace it with two seri...