ArticCynda
Advanced Member level 1
Hi all,
I need a compact 48V to 12V buck regulator with high output current (40A). I thought of using the LT3800 as controller, and 2 Toshiba TPH2R608N N-channel MOSFETs in a synchronous push-pull stage.
All the calculations in the LT3800 datasheet however seem to suggest the maximum feasible output current is 10A, but being a novice in high power design, I don't see where this limitation comes from as long as the switches can handle the current (and reducing shunt resistor from 15 mOhm to 4 mOhm). My application doesn't care much about ripple on the output rail.
If someone could give me a hint, I'd be very grateful!
I need a compact 48V to 12V buck regulator with high output current (40A). I thought of using the LT3800 as controller, and 2 Toshiba TPH2R608N N-channel MOSFETs in a synchronous push-pull stage.
All the calculations in the LT3800 datasheet however seem to suggest the maximum feasible output current is 10A, but being a novice in high power design, I don't see where this limitation comes from as long as the switches can handle the current (and reducing shunt resistor from 15 mOhm to 4 mOhm). My application doesn't care much about ripple on the output rail.
If someone could give me a hint, I'd be very grateful!