Altera Transceiver Signal Integrity Development Kit, Stratix IV GX Edition - Manual (Page 36)

2–26 Chapter 2: Board Components
Power
Transceiver Signal Integrity Development Kit, November 2011 Altera Corporation
Stratix IV GX Edition Reference Manual
Power Distribution System
Figure 2–10 shows the power distribution system on the board.
Figure 2–10. Power Distribution System
Switching
Regulator
14 V - 20 V
DC Input
(60 W ) max
U1
LTM4601
LTM4601
Switching
Regulator
U2
0.9 V @ 24 A VCC
VCCHIP
5 V @ 12 A
LTM4601
Switching
Regulator
U3
3.3 V @ 8 A
VCCD_PLL
Bead
2.5 V @ 8 A
3.3 V Devices
LTM4616
Dual Output
Micromodule
U5
LEGEND
Stratix IV GX Power
Other Power
VCCIO
VCCPD
VCCREF
VCCPGM
VCCBAT
VCC_CLKIN
2.5 V Devices
Bead
LT3080-1
LDO
2.5 V / 3.0 V
@ 1.1 A
U4
LT1761
LDO
U37
VCCA
1.8 V
@ 0.1 A
3.3V_Analog
ADC
LCD, Fan,
Pat Board
VCCA_PLL
VCCAUX
VCCL_GXB
1.1 V
@ 0.5 A
LTC3025-1
LDO
(U11)
LT3080-1
LDO
1.4 V / 1.5 V
@ 2.2 A
LTC3025-1
LDO
1.5 V
@ 0.5 A
(U10, U12)
VCCH_GXB
VCCIO_1.5 V
VCCPT
(U13)
LT3080-1
LDO
1.1 V
@ 4.4 A
VCCRT
LT3080-1
LDO
LTC3025-1
LDO
(U6, U9)
1.2 V
@ 1.1 A
(U25)
1.8 V
@ 0.5 A
(U38)
VCC_1.2V
Ethernet
VCC_1.8V
Flash