Altera Cyclone IV GX FPGA Development Board - Manual (Page 55)

Chapter 2: Board Components 2–47
Power Supply
May 2013 Altera Corporation Cyclone IV GX FPGA Development Board
Reference Manual
An on-board multi-channel analog-to-digital converter (ADC) measures both the
voltage and current for several specific board rails. The power utilization is displayed
using a GUI that can graph power consumption versus time.
Power Distribution System
Figure 2–7 shows the power distribution system on the development board. The
currents shown are conservative absolute maximum levels and reflects the regulator
inefficiencies and sharing.
Figure 2–7. Power Distribution System
1.2V_VCCL_GXB
VCCP_PCC, VCC
16 V
DC INPUT
ide
a l
diode mux 12 V - PCI Express Motherboard
5.5 A Maximum
VCCA
2.5V_VCCA_VCCH_GXB
Linear
Regulator
(LTC3853)
Linear
Regulator
(LTC3850)
Linear
Regulator
(LTC3027)
12V_HSMC
1.8V
3.3V
5V
2.5V_USB
U43
U50
U41
Shunt installed = 2.5 V
Shunt not installed = 1.8 V
Linear
Regulator
(LTC3026)
2.5V_B5_B6
1.1V
U42
Linear
Regulator
(LTC3026)
U53
0.066 A
5V_USB
3.3 V
Linear
Regulator
(LTC3026)
1.8V_B3_B4
U40
2.5 V
1.8V_B7_B8
TPS51100DGQ
VTT_B3_B4
U45
1.8V_B3_B4
VREF_B3_B4
TPS51100DGQ
VTT_B7_B8
U47
1.8V_B7_B8
VREF_B7_B8
2.5 V
1.2 V
12 V