Power Distribution System - Altera Cyclone V Reference Manual

Chapter 2: Board Components
Power Supply

Power Distribution System

Figure 2–10. Power Distribution System
12 V PCIe Motherboard
5.5 A Maximum
DC Input
19 V
3.3 V PCIe Motherboard
3.0 A Maximum
August 2017 Altera Corporation
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Figure 2–10 shows the power distribution system on the development board.
Regulator inefficiencies and sharing are reflected in the currents shown, which are
conservative absolute maximum levels.
1.082 A
0.361 A
1.563 A
0.754 A
0.033 A
0.928 A
Ideal Diode
Multiplexer
12 V,
U40
6.926 A
LTC3855
Dual-Channel
Ideal Diode
Controller
Multiplexer
3.3 V,
6.591 A
U24
1.1 V, 10.029 A
LTC3613 (15 A)
Switching Regulator (+/- 2%)
U25
1.2 V, 3.067 A
LTC3605 (5 A)
Switching Regulator (+/- 2%)
U21
LTC3608 (8 A)
2.5 V, 7.199 A
Switching/Linear
Regulator (+/- 2%)
U18
0.256 A
LTC3022 (1 A)
Linear Regulator (+/- 2%)
U1
LTC3605 (5 A) 1.5 V,
Switching Regulator (+/- 2%) 5.6076 A
3.3 V
3.3 V
U10
LT3085
0.5 A LDO
U2
LTC3605 (5 A) 2.5 V,
Switching Regulator (+/- 2%) 3.786 A
U42
12.0 V, LT3009
0.11 A 20 mA LDO
U39
3.3 V,
LT3025-1
0.290 A
0.5 A LDO
U7
1 A LDO
R
SENSE
1.1 V, 10.029 A
C5GT VCC
C5_VCCL_GXBL
C5GT VCCL_GXBL
BEAD
R
SENSE
C5_VCCE_GXBL
C5GT VCCE_GXBL
C5_VCCIO_2.5V
2.5 V, 2.917 A
C5GT VCCIO (2.5 V),
VCCPD, VCCPGM
2.5 V,
2.962 A
C5GT VCC_AUX, VCCA_FPLL,
BEAD
VCCH_GXBL, VCCBAT
2.5 V,
EMP2210 VCCIO1/2, ENET
1.065 A
VDD, Oscillators, Clock Buffers
R
SENSE
C5_VCCIO_1.8V
1.8 V, 1.8 V,
C5GT VCCIO (1.8 V)
0.256 A 0.007 A
EPM2210 VCCINT and
1.8 V,
VCCIO3/4, Flash VDD/VDDQ,
0.249 A
EMP540 VCCINT, Oscillator
R
SENSE
1.5 V, C5_VCCIO_1.5V
3.0396 A
C5GT VCCIO (1.5 V)
1.5 V, 1.5680 A
1.5V_DDR3
DDR3 VDD/VDDQ, TPS51200
DDR3_VREFA
U53
0.75 V, 0.50 A
VTT_DDR3A
TPS51200
DDR3_VREFB
U43
0.75 V, 0.50 A
VTT_DDR3B
TPS51200
5.0 V,
0.033 A
R
C5_VCCIO_VAR
SENSE
2.5 V,
C5GT VCCIO (1.2 V, 1.5 V,
1.785 A
1.8 V, 2.5 V, 3.3 V)
2.5 V,
FMC_VADJ
2.001 A
FMC VADJ
12 V, 2.095 A
HSMC, FMC, Fan/Heatsink
5.37 V, 0.11 A
5.37V_MONITOR
3.3 V, 6.301 A
HSMC, FMC, EPCQ, SDI
EPM570 VCCIO
1.5 V, 0.037 A
EPM540 VCCIO2
LT3022 1.0 V, 0.253 A
DVDD_1.0V
ENET DVDD
Cyclone V GT FPGA Development Board
2–51
C5_VCC
C5_2.5V
2.5V
1.8V
50 MHz
5.0V
LCD
12V
3.3V
1.5V
Reference Manual