Help Needed: Active Cell Balancer Design Using STM32 and TC4422 Driver

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hamzar8093

Joined Sep 8, 2024
1
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I need help from professionals with my Active Cell Balancer Circuit. Basically, I am trying to make an active cell balancer using the STM32 microcontroller. The MOSFET I plan to use is the IRFZ44N, along with the TC4422 IC driver.

I will measure the battery cell voltages via the ADC of the STM32 and develop an algorithm for this circuit. The GPIO Output pins will work at the TC4422 part. However, I cannot test the complete simulation because there is no option for STM32 simulation. Therefore, I need to verify this circuit before purchasing the components. Then i will check it on hardware.

If any experts have suggestions to improve my project, that would be greatly appreciated. I apologize if my knowledge is limited, as I am new to this field.1730037503405.png
 

MrChips

Joined Oct 2, 2009
34,628
Use IRLZ44 instead of IRFZ44 for lower gate threshold voltage.
I don’t know if you still need TC4422.
I don’t see any connections to the batteries.
 

ronsimpson

Joined Oct 7, 2019
4,647
How are you going to turn on a MOSFET who's Source is 10 volts above ground?
How are you going to measure the voltage of a battery that is not near ground when the ADC can only measure voltages 0 to 3V?
If one battery has too much voltage, are you just going to turn on a MOSFET? It will get really hot and die.
What is the charging current? How much balancing current?
 
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