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Peak Current Mode Control - Phase shift

Question asked by Ivan P on Aug 14, 2018
Latest reply on Aug 15, 2018 by Ivan P

Hi,

 

I am developing a peak current mode control of a H bridge dc converter. The output voltage of the converter is controlled by controlling the phase shift of leg B (Q3 & Q4). As it can be seen on the attached picture, the comparator is directly controlling the phase shift.

 

Since the comparator delivers 1 or 0 (On or Off state), I guess based on the On time I need to control the phase shift. What is the correlation (formula) of the On time vs phase shift?

 

Thank you. 

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