Altera Cyclone III Development Board - Manual (Page 73)

Chapter 2: Board Components 2–63
Power Supply
© March 2009 Altera Corporation Cyclone III 3C120 Development Board Reference Manual
Figure 2–17. Power Distribution System
Wide Input
Switching
Regulator
(LT3481)
Linear
(LT1761)
2.013A
1.2V
2.000A
12V
0.013A
12V
4.169A
3.3V
0.002A
3.3V
1.036A
3.3V
0.002A
3.0V
1.036A
2.5V
0.619A
2.5V
0.013A
5.0V
Wide Input
Switching
Regulator
(LTM4601)
10.429A
12V
PowerNet
HMCA Port A
HMCB Port B
5.0V
Partial Plane
Character LCD
DDR2 Term Regulators
Linear
80% eff.
(LT1761)
3.0V_CSENSE
Partial Plane
LTC1865Lm AD8531,
INA271, ADG725
1.045A
1.8V
0.005A
5.0V
1.045A
0.9V
VREF_B3_B4
Linear (TPS5100)
VTT_B3_B4
Partial Plane
DDR2BOT Term
1.205A
1.8V
0.005A
5.0V
1.205A
0.9V
VREF_B7_B8
Linear (TPS5100)
VTT_B7_B8
Partial Plane
DDR2TOP Term
2.5V_B1_B2
Partial Plane
FPGA VCCIO1
FPGA VCCIO2
Linear
(LT1963)
R
MEASURE
0.182A
2.5V
2.5V_B5_B6
Partial Plane
FPGA VCCIO5
FPGA VCCIO6
0.182A
2.5V
2.5V_VCCA
Partial Plane
FPGA VCCA
0.053A
2.5V
2.5V Partial Plane
MAXIIG VCCIO1/2,
Enet PHY VDDO/H/X+AVDD,
Graphics LCD VDD
3.200A
3.3V
4.693A
1.8V
1.747A
1.8V
1.8V_B3_B4
Partial Plane
FPGA VCCIO3
FPGA VCCIO4
Switching
Regulator
(LTC3418)
0.348A
1.8V
1.8V_B7_B8
Partial Plane
FPGA VCCIO7
FPGA VCCIO8
0.348A
1.8V
V
IN
V VLDOIN
V
IN
V VLDOIN
1.8V Partial Plane DDR2 VDD/
VDDQ, MAXIIG VCCINT,
MAXIIG VCCIO3/4, SRAM VCC/
VCCQ, Flash VDDQ,
24M/50M/125M Oscillators
1.902A
3.3V
4.184A
1.2V
3.814A
1.2V
1.2V
Power Net
Enet PHY DVDD
Switching
Regulator
(LTC3418)
0.250A
1.2V
1.2V_INT
Partial Plane
FPGA VCCINT
0.120A
3.3V
0.120A
1.2V
0.120A
1.2V Linear
Regulator
(LTC1963A)
1.2V_VCCD
Partial Plane
FPGA VCCD
3.3V Partial Plane
Flash VDD, FTDI USB VCC,
Cypress USB VCC/AVCC,
25M Oscillator,
HSMC Port A, HSMC Port B
DC Input
14V - 20V
80% eff.
R
MEASURE
R
MEASURE
R
MEASURE
R
MEASURE
R
MEASURE
R
MEASURE
R
MEASURE
R
MEASURE
R
MEASURE
R
MEASURE
R
MEASURE
R
MEASURE