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UCC28740: Charging capacitor bank with flyback converter.

Joseph Slivinski
Prodigy 30 points
Part Number: UCC28740

I'd like to use UCC28740 to control an output voltage of 225V with an input of 108V DC (rectified from an AC power supply.) I am charging a three-capacitor bank and would like to not just dump current into them and would like to slowly ramp the current being supplied. Is this possible, if so, would I use the feedback input for this? Thanks.

  • 0
    TI__Guru 73345 points

    No, there is no such feature directly from UCC28740. You need to design your own circuit to control your current ramp. If you want to regulate the output current, a possible way is to modify the current sensing resistor value which can set up different constant current so to achieve your current need.

    FB does not have current regulation function.