1.1.2 Power-Supply Topology

PolarFire FPGAs require multiple power supplies. Figure 1-2 shows a power supply topology example for generating the required power supplies from a single 12V source. This example is based on the PolarFire MPF300-FCG1152 device with DDR3 and DDR4 interfaces.

Figure 1-2. Example Power-Supply Topology

The following table lists the suggested Microchip power regulators for PolarFire FPGA voltage rails.

Table 1-10. Power Regulators
Voltage railPart NumberDescriptionCurrent
5VMIC24055YJL-TRIC REG BUCK ADJ 12A SYNC 28QFN12A
VDD (1.0V)MIC45212-2YMP-T1DC DC CONVERTER 0.8–5.5V 77W14A
VDDIO (3.3V)MIC24055YJL-TRIC REG BUCK ADJ 12A SYNC 28QFN12A
VCCIO_HPC_VADJMIC24046YFL-TRIC REG BUCK PROG 5A SYNC 20VQFN5A
DDR4 (1.2V)MIC23303YML-T5IC REG BUCK ADJ 3A SYNC 12DFN3A
DDR3 (1.5V)MIC23303YML-T5IC REG BUCK ADJ 3A SYNC 12DFN3A
VDDAUX[2,4]MIC23303YML-T5IC REG BUCK ADJ 3A SYNC 12DFN3A
VDDAUX5MIC23303YML-T5IC REG BUCK ADJ 3A SYNC 12DFN3A
VTT_DDR4 (0.6V)MIC5166YML-TRIC PWR SUP 3A HS DDR TERM 10MLF3A
VTT_DDR3 (0.75V)MIC5166YML-TRIC PWR SUP 3A HS DDR TERM 10MLF3A
VDDIO (1.8V)MIC24046YFL-TRIC REG BUCK PROG 5A SYNC 20VQFN5A
VDDA (1.0V)MIC69502WRIC REG LINEAR POS ADJ 5A SPAK-75A
VDD25, VDDA25, VDD_XCVR_CLKMIC69502WRIC REG LINEAR POS ADJ 5A SPAK-75A
VDD18MIC69502WRIC REG LINEAR POS ADJ 5A SPAK-75A