Recently I make LTM4630 to output 1V to FPGA VCCINT for 18A.During my design,I find a question about INTVCC with different connect between LTM4630fa datasheet and DS2081-a as following:
the datgasheet tells that INTVCC should connect PGND ,but the DS2081-a connect it to SGND,and there is a 0 ohm between SGND and GND,which is right?
Please following the layout of the DC2081a board. Datasheet graphs sometimes don't differentiate SGND and PGND. For uModules with higher current, we usually ask the customer to use a separated SGND ground copper area, and connect the SGND to PGND underneath the unit. SGND is more quiet than PGND and INTVCC can be decoupled to SGND. THANKS!