I'm designing a power supply for Artix 7 and I have shortlisted LTM4633 and LTM4634 for usage. The plan of usage is this:
LTM4633 (1) - Vout1 - Vccint, Vccbram (1 V)
Vout2 - MGTAVCC (1 V)
Vout3 - MGTAVTT (1.2 V)
LTM4633 (2) Vout1 - Vccaux (1.8 V)
Vout2 - FX3 USB 3.0 tranceiver core-supplies (1.2 V)
Vout3 - FX3 USB GPIF pins and FPGA bank 15 (1.8 V)
LTM4634 Vout1 - DDR3 and Bank 16 -- 1.35 V, calculations indicate a 88.7k will generate ~1.347 V)
Vout2 - All other ICs (like SPI memories, USB-JTAG interfaces etc) and Bank0 and Bank14 (3.3 V)
Vout3 - Banks 34 and 35 (2.5 V for LVDS I/O)
Can someone guide me and verify if this is ok ? also, I find the pins on both the 4633 and 4634 are the same. Are both this ICs compatible ? i.e., given they satisfy the voltage and current requirements, can they be used interchangably ?
The design looks fine. LTM4633 and LTM4634 both have three outputs. The third channel can give higher Vout than channel 1 and 2. LTM4634 is meant for higher voltage, lower load current application compared…
For ADP5054 simulation tool, please visit the below link. Thanks.
LTM4633 and LTM4634 are avaiable in LTspice simulation tool. You can download LTspice using the following link:
LTspice | Design Center | Analog Devices