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Hello,
I have been working on a charger , it is a PSFB converter andcharging method is CC/CV so I need to sense output current and voltage both . I handled the algorithm but I have a problem at one point. I use phase shifted UCC28950 control IC and I want to adjust my charge curret before charging. I mean the max. and fixed charge current is 55A but I want to adjust it o 50A or 45A. Thus ,If I adjust referance voltage of my control loop with a MCU , does it work prooperly ? or I can adjust the gain of current sense op-amp ? which one is better solution ?
Power Stage
Control Stage
Note: I did not apply the cc/cv structure yet , It will work with only CC mode for now .
I have been working on a charger , it is a PSFB converter andcharging method is CC/CV so I need to sense output current and voltage both . I handled the algorithm but I have a problem at one point. I use phase shifted UCC28950 control IC and I want to adjust my charge curret before charging. I mean the max. and fixed charge current is 55A but I want to adjust it o 50A or 45A. Thus ,If I adjust referance voltage of my control loop with a MCU , does it work prooperly ? or I can adjust the gain of current sense op-amp ? which one is better solution ?
Power Stage
Control Stage
Note: I did not apply the cc/cv structure yet , It will work with only CC mode for now .
