EEVblog Electronics Community Forum
Electronics => Projects, Designs, and Technical Stuff => Topic started by: Jester on November 25, 2020, 04:13:54 pm
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Does anyone have experience charging a Supercap with a linear regulator?
I don't have the luxury of adding a current limiting circuit as I will be simply connecting the SC in parallel with the output of the regulator (MIC39100-5.0WS) on an already existing circuit. I would imagine the regulator will simply current limit for the 10s or so it will take to charge. Not sure about the regulator being energized on the output with no input, the datasheet talks vaguely about reverse current protection.
https://www.digikey.ca/en/products/detail/FYH0H474ZF/399-17224-ND/8565910?itemSeq=346077208 (https://www.digikey.ca/en/products/detail/FYH0H474ZF/399-17224-ND/8565910?itemSeq=346077208)
https://www.digikey.ca/en/products/detail/microchip-technology/MIC39100-5-0WS/771642 (https://www.digikey.ca/en/products/detail/microchip-technology/MIC39100-5-0WS/771642)
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tried with an 3.3 farad super cap, took 15 minutes to charge at 2 amps ??? but with an bms, cause i used an linear regulator, and when i put the super cap, its like a short for a few secs, it was going into overload ...
As the spec sheets it depends if you use it like a battery or a capacitor, it could take a few secs or hours to charge ?