Board Power System - Board Power System - UG1712

VEK385 Evaluation Board User Guide (UG1712)

Document ID
UG1712
Release Date
2026-02-18
Revision
1.0 English

The VEK385 evaluation board uses power management ICs (PMIC) and power regulators from MPS to supply the core and auxiliary voltages listed in the following tables. The detailed device connections for the feature described in this section are documented in the VEK385 board schematic.

Table 1. Power System - PMBus Regulators and INA226 Map
Domain Rail Name Nominal Voltage (V) Max Current (A) PMBUS Addr PMIC Port INA7xx Addr Voltage Monitor Addr Voltage Monitor Port
FPD VCC_FPD 0.88 24 PMBUS1 0x23 8 PMBUS1_INA0x40

PMBUS1

0x05

VIN2
FPD VCC_USB2_504 0.80 0.10 PMBUS1 0x12 N/A N/A N/A N/A
FPD VCC_PAUX_504 0.80 0.10 PMBUS2 0x13 N/A N/A N/A N/A
FPD VCC_USB3_504 0.80 0.20 PMBUS2 0x14 N/A N/A N/A N/A
FPD VCCIO_USB2_504 3.30 0.20 PMBUS2 0x15 N/A N/A N/A N/A
FPD VCCREG_USB2_504 3.30 0.20 PMBUS2 0x16 N/A N/A N/A N/A
FPD VCCIO_PAUX_504 1.80 0.10 PMBUS2

0x17

N/A N/A N/A N/A
FPD VCCIO_USB3_504 1.20 0.50 PMBUS2 0x18 N/A N/A N/A N/A
LPD VCC_LPD 0.88 6 PMBUS1 0x23 9 PMBUS1_INA 0x44

PMBUS1

0x05

VIN3
LPD VCCAUX_LPD 1.50 2 PMBUS2 0x19 N/A PMBUS1_INA 0x45

PMBUS1

0x05

VIN4
LPD VCCO_50X 1.80 3 PMBUS1 0x1A N/A PMBUS1_INA 0x46

PMBUS1

0x05

VIN5
LPD VCC_MIPI_507 0.80 0.50 PMBUS2 0x1E N/A PMBUS1_INA 0x47 N/A N/A
LPD VCCIO_MIPI_507 1.20 0.50 PMBUS2 0x1F N/A PMBUS2_INA 0x44 N/A N/A
SoC VCC_SOC_IO 0.80 30 PMBUS1 0x22 1-2 PMBUS1_INA 0x41

PMBUS1

0x05

VIN1PN
SoC VCCAUX 1.50 5 PMBUS2 0x01 N/A PMBUS2_INA 0x46

PMBUS1

0x06

VIN3
SoC VCC_MMD 0.80 6 PMBUS1 0x22 9 PMBUS4_INA 0x44

PMBUS1

0x06

VIN5
SoC VCCO_7xx_LP5 1.00 10 PMBUS1 0x22 8 PMBUS3_INA 0x47

PMBUS1

0x06

VIN4
SoC VADJ_FMC 1.20 6 PMBUS2 0x02 N/A PMBUS2_INA 0x47 N/A N/A
PL VCCINT 0.80 90 PMBUS1 0x23 1-4 PMBUS1_INA 0x48, 0x49, 0x4A, 0x4B

PMBUS1

0x07

VIN1PN
PL VCC_RAM 0.80 2 PMBUS1 0x24 9 PMBUS4_INA 0x45 PMBUS1 0x07 VIN6
PL VCCO_40X 3.30 2 PMBUS2 0x1B N/A PMBUS3_INA 0x44 N/A N/A
PL GTYP_AVCC 0.92 4 PMBUS1 0x24 8 PMBUS4_INA 0x46 PMBUS1 0x07 VIN3
PL GTYP_AVCCAUX 1.50 0.50 PMBUS1 0x1C N/A PMBUS3_INA 0x45 PMBUS1 0x07 VIN4
PL GTYP_AVTT 1.20 4 PMBUS1 0x1D N/A PMBUS3_INA 0x46 PMBUS1 0x07 VIN5
AIE VCC_AIE 0.80 90 PMBUS1 0x24 1-4

PMBUS2_INA

0x48, 0x49, 0x4A, 0x4B

PMBUS1 0x06 VIN1PN
UTIL0 UTIL_5V0 5.00 20 N/A N/A PMBUS2_INA 0x45

(Bank 504 only)

PMBUS1 0x07 N/A
UTIL0 UTIL_3V3 3.30 20 N/A N/A N/A N/A N/A
UTIL1 LP5_VDDH_1V05 1.05 5 PMBUS2 0x03 N/A N/A N/A N/A
UTIL1 LP5_VDDQ_0V5 0.50 0.5 PMBUS2 0x04 N/A N/A N/A N/A
UTIL1 UTIL_1V8 1.80 5 N/A N/A N/A N/A N/A
UTIL1 UTIL_2V5 2.50 5 N/A N/A N/A N/A N/A
UTIL1 UTIL_1V2 1.20 5 N/A N/A N/A N/A N/A
UTIL1 UTIL_ETH_VCC1V0 1.00 1 N/A N/A N/A N/A N/A
SYSCTRL0 SYS_VCC5V0 5.00 8 N/A N/A N/A N/A N/A
SYSCTRL1 SYS_VCC1V8 1.80 2 N/A N/A N/A N/A N/A
SYSCTRL1 SYS_VCC3V3 3.30 2 N/A N/A N/A N/A N/A
SYSCTRL1 SYS_VCC2V5 2.50 0.5 N/A N/A N/A N/A N/A
SYSCTRL1 SYS_ETH_VCC1V0 1.00 0.5 N/A N/A N/A N/A N/A

The FMCP HSPC (J13) VADJ pins are wired to the programmable rail VADJ_FMC. The VADJ_FMC rail is programmed to 1.20V by default, only 1.20V is supported. The VADJ_FMC rail also powers the 2VE3858 FMCP interface banks 705, 706, 707, 712, and 713. Documentation describing PMBus programming for the MPS power controllers is available on the MPS website. The PCB layout and power system design meet the recommended criteria described in the Versal Adaptive SoC PCB Design User Guide (UG863).

Note: VCC12_SW is disabled when using ATX 12V (6+2) input.

More information about the power system regulator components can be found at the MPS website.