Altera Cyclone III LS FPGA Development Board - Manual (Page 53)

Chapter 2: Board Components 2–45
Power Supply
© October 2009 Altera Corporation Cyclone III LS FPGA Development Board Reference Manual
Power Measurement
There are eight power supply rails which have on-board voltage and current sense
capabilities. These 8-channel differential 24-bit ADC devices and rails are split from
the primary supply plane by a low-value sense resistor for the ADC to measure
voltage and current. A SPI bus connects these ADC devices to the MAX II CPLD
EPM2210 System Controller as well as the Cyclone III LS FPGA.
Figure 2–10. Power Distribution System
12 V
2.095 A
C3LS_VCCA
C3LS200 VCCA
2.5 V
1.052 A
VCCIO_B1B2
C3LS200 Banks 1 & 2 VCCIO
5,0 V
LCD
5V MONITOR
3.3V
HSMC Port A and B
LVDS Clock Buffer,
Programmable Oscillator
12V
HSMC Port A and B
Cooling Fan
2.5 V
0.100 A
3.3 V
4.155 A
5.0 V
0.010 A
LT2418
2.5V
Sync SRAM, Flash VDDQ,
Enet PHY AVDD,
EPM2210, 2 Oscillators
1.8V
DDR2 Devices, Flash VDD,
Oscillator
0.9VTT & 0.9VREF
DDR2 ADDR/CMD Term & Ref
VCCIO_B7
C3LS200 Bank 7
1.8 V
0.300 A
C3LS_VCCINT
C3LS200 VCCINT
1.2 V
5.878 A
VCCD_PLL
C3LS200 VCCD_PLL
1.2 V
0.100 A
1.2V
Enet PHY DVDD
1.2 V
0.608 A
R
SENSE
R
SENSE
R SENSE
R
SENSE
14 V - 20 V
DC INPUT
5.37 V
0.010 A
Linear
Regulator
(LT1761)
Linear
Regulator
(LT1761)
Controller
(LTC3853)
12 V
2.105 A
Linear
Regulator
(+/- 5%)
(LT1761)
0.100 A
2.5V_VCCA
4.255 A
10.239 A
3.3 V
2.5 V
VCCIO_B3B4
C3LS200 Banks 3 & 4 VCCIO
VCCIO_B5B6
C3LS200 Banks 5 & 6 VCCIO
2.5 V
0.170 A
R
SENSE
2.5 V
0.075 A R
SENSE
2.5 V
0.170 A
R SENSE
1.8 V
1.153 A
1.8 V
3.173 A
Switching
Regulator
(LTC3414)
0.9 V
1.450 A
Linear
Regulator
(TPS51200)
1.8 V
0.300 A R
SENSE
VCCIO_B8
C3LS200 Bank 8
BEAD
VCCD_PLL
0.100 A
1.2 V
6.586 A
Switching
Regulator
(+/- 5%)
(LTC3418)
*85% efficiency has been
assumed for all switching
regulators
USB 5.0V
USB PHY Analog,
AT93C46DN EEPROM
Linear
Regulator
(LT3023)
USB 2.5V
EPM240Z VCCIO Emb,
Blaster, USB PHY IO,
24M OSC, AT93C46DN
EEPROM
M2Z VCCINT
EPM240Z VCCINT
0.024 A
0.002 A
0.005 A
0.33 A
USB 5.0V
5.0 V
1.8 V
2.5 V
5.599 A