I'm Jurgen from Germany. I'm a LED driver designer and designed LED drivers up to 1kW. Now I face a heavy challenge as follows:
UIN is 10V to 60V DC
IOUT is 40 A; in steps of 0%, 25% (10A), 50% (20A), 75% (30A), 100% (40A).
LED is 3.5V at 40A max.
I checked a lot of drivers, eg. LT8391A or LT3763.
I think, 40A output current is really at the edge of possible single-stage solutions.
My thoughts are to use a synchrone current controller, and / or 2-stage controller.
Can somebody give me more hints or ideas, about solutions to deliver this huge output current?
Thank you very much!