Onboard Power System Devices
The VCU128 evaluation board uses programmable power regulators from Intersil Corporation to
supply the core and auxiliary voltages listed in the following table.
Table 32: Onboard Power System Devices
Schematic
Page
Rail Name
Regulator Type
U# Vout
(V)
Iout
Range
(A)
I2C
Address
INA226
U#
I2C
Address
Programmable Regulators and INA226 Map
Programmable Regulators
54
VCCINT (PWM[2:6])
ISL68127IRAZ-TR5823
U31
0.72 -
0.85
125
0X65
U84
0x40
54
VCCBRAM (PWM[0])
ISL68127IRAZ-TR5823
U31
0.72 -
0.85
30
0X65
U86
0x41
56
VCC1V8 (PH_A/B)
ISL91302BIKZ-TR5814
U15
1.8
4 - 6
0x63
U14
0X42
56
VADJ (PH_C/D)
ISL91302BIKZ-TR5814
U15
0, 0.3
-1.8
4.5 - 6
0x63
NA
NA
57
VCCHBM
ISL68301IRAZ-TR5823
U36
1.2
25
0x68
U85
0x4C
57
MGTAVTT
ISL68301IRAZ-TR5823
U24
1.2
20
0x69
U21
0x47
58
SYS_1V8 (PH_A)
ISL91211AIKZ-TR5818
U22
1.8
0.75 - 1
0x60
NA
NA
58
MGTVCCAUX (PH_B)
ISL91211AIKZ-TR5818
U22
1.8
0.75 - 1
0x60
U20
0x48
58
MGTAVCC (PH_C/D)
ISL91211AIKZ-TR5818
U22
0.9
8 - 10
0x60
U16
0x46
59
QDR4_VDDQ (PH_A/B)
ISL91302BIKZ-TR5815
U44
1.2
5 - 6
0x62
NA
NA
59
UTIL_1V30 (PH_C/D)
ISL91302BIKZ-TR5815
U44
1.3
4.5 - 6
0x62
NA
NA
60
RLD3_VDDQ (PH_A/B/D)
ISL91302BIKZ-TR5816
U67
1.2
7 - 10
0x64
NA
NA
60
DDR4_VDDQ (PH_C)
ISL91302BIKZ-TR5816
U67
1.2
2.5 - 3
0x64
NA
NA
61
UTIL_1V35 (PH_A/B/D)
ISL91302BIKZ-TR5817
U68
1.35
6.5 - 10
0x61
NA
NA
61
SYS_1V0 (PH_C)
ISL91302BIKZ-TR5817
U68
1
1.75 - 2
0x61
NA
NA
62
UTIL_3V3
ISL68301IRAZ-TR5826
U3
3.3
30
0x6A
NA
NA
62
UTIL_5V0
ISL68301IRAZ-TR5825
U12
5
20
0x6B
NA
NA
Non-I2C Regulators
63
VCCAUX_HBM
SL80019FRZ-T7A
U29
2.5
1.5
NA
U79
0x4D
65
VCC_3V3
ISL85415FRZ-T7A
U25
3.3
20
NA
NA
NA
33
DDR4_VTERM_0V6
TPS51200DR
U71
0.6
3
NA
NA
NA
33
RLD3_VTERM_0V6
TPS51200DR
U92
0.6
3
NA
NA
NA
Notes:
1.
Jumper selectable at 3-pin header J25: 1-2=0.85V (default); 2-3=0.72V.
Documentation describing the programming of the Intersil power controllers is available on the
Intersil website (see
). The PCB layout and power system design meet the
recommended criteria described in the UltraScale Architecture PCB Design User Guide (
Chapter 3: Board Component Descriptions
UG1302 (v1.1) April 21, 2021
VCU128 Board User Guide
87