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Bidirectional buck boost dc dc converter for charging and discharging the batteries

I see LT8708 and LT8708-1 are the only bidirectional buck boost converters with DC2719A evaluation boards 

I want to use bidirectional buck boost converter for charging and discharging battery. Two converters are connected in a parallel with different batteries are connected at the output terminals of the converter. I planned to design a control system using Microcontroller using voltage , current sampling circuits and ADC. I generate PWM using Microcontroller to control the output of the converter boards. As I was connecting the boards in the parallel I use current sharing method.

But I see the output control of the DC2719A is controlled by Master slave communication technology.

Is it possible to control the output of the board by using external PWM control using Microcontroller?

If not is there any possible way to do it. Please inform me 

Thanks and Regards

I am uploading some figures for easy understading.

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