My customer is looking for a 4 phase circuit. 12V to 5V/100A. It’s a mini module inside ATE. So we suggest one phase of LT3741 with 3 phase of LT8550. Just make sure nothing wrong w it. The 4th phase of LT8550. How to remove this phase. I mean maybe all 4th phase gate can open. Current sense how to do? Please notice us all, thanks.
Please connect the pins as follows
BST4,SW4: Tie to GND.
TG4,BG4: Leave open.
ISP4, ISN4: Tie together and GND.
Programming of the number of phases is discussed in page 14 of LT8550 datasheet
thanks for notice 4 phase setting by pins PHS3:1 = GND:REG:GND, but I want to know these hardware pin on BST4, TG4, SW4, BG4, ISP4 & ISN4. if this phase unused. should they float or tie to VOUT or something else ?