I'm working on an LED driver based on the LT3756 that powers two 360W COBs (75.8V, 9.5A total) from a 16S LiFePO4 pack (51.2V nominal). I have three questions:
1. What does "A" stand for in the input capacitance equation? LED current? (See image)
2. Is it possible to use electrolytic capacitors for better capacitance/cost?
3. What should the output capacitance be? The datasheet is ambiguous on this.
I had a working prototype which seemed comfortable driving one COB at 250W with input and output capacitances of 40μF (4x10μF X5R 1210)