I'm considering hiring an electrical engineer to design an emergency power supply for use in embedded devices. This power supply only needs to hold ~15 seconds of charge (enough time to safely shut down the devices). I would like to support 12V and up to 2A. Juice4Hault produces a Supercapacitor UPS, but thier prices are very high. Batteries aren't reliable since they degrade and corrode over time.
I found some cheap parts that I hope will keep production costs low:
Basically I would like to use low voltage supercaps and a voltage booster to convert extra amps into higher voltage output. Where I'm lost is interpreting the LM2623 datasheet. Could it reliably boost these Supercaps into 12V 2A 15-second output?
UPDATE: I'm considering using two capacitors in series. Then I'd have 5.4V 50F at my disposal. The Samwha Green-Caps that I am considering can pull 5A continuous current. So 5A ∙ 3V(Min) ∙ 80% efficiency = 12V ∙ 1A, sustainable for 10 seconds, which I could live with. I would have to use a more expensive booster:
Is there an IC that can safely support this?