Power Measurement - Altera Cyclone III LS Reference Manual

Chapter 2: Board Components
Power Supply
Figure 2–10. Power Distribution System
DC INPUT
14 V - 20 V
*85% efficiency has been
assumed for all switching
USB 5.0V
USB PHY Analog,
AT93C46DN EEPROM
USB 5.0V
5.0 V
0.024 A
0.33 A
Linear
Regulator
(LT3023)
0.005 A
USB 2.5V
EPM240Z VCCIO Emb,
Blaster, USB PHY IO,
24M OSC, AT93C46DN
EEPROM
M2Z VCCINT
EPM240Z VCCINT

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.
© October 2009 Altera Corporation
12 V
2.105 A
3.3 V
Controller
4.255 A
(LTC3853)
2.5 V
10.239 A
regulators
1.8 V
0.002 A
2.5 V
5.599 A
Linear
Regulator
(LT1761)
Linear
Regulator
(LT1761)
Linear
Regulator
2.5V_VCCA
(+/- 5%)
0.100 A
(LT1761)
R
SENSE
R
SENSE
R
SENSE
Switching
1.8 V
Regulator
3.173 A
(LTC3414)
Linear
Regulator
(TPS51200)
Switching
Regulator 1.2 V
(+/- 5%)
6.586 A
(LTC3418)
VCCD_PLL
0.100 A
BEAD
Cyclone III LS FPGA Development Board Reference Manual
12V
12 V
HSMC Port A and B
2.095 A
Cooling Fan
5,0 V
5.0 V
0.010 A
LCD
5V MONITOR
5.37 V
0.010 A
LT2418
3.3V
3.3 V
HSMC Port A and B
4.155 A
LVDS Clock Buffer,
Programmable Oscillator
2.5 V C3LS_VCCA
0.100 A
R
C3LS200 VCCA
SENSE
2.5V
2.5 V
Sync SRAM, Flash VDDQ,
1.052 A
Enet PHY AVDD,
EPM2210, 2 Oscillators
VCCIO_B1B2
2.5 V
0.170 A
C3LS200 Banks 1 & 2 VCCIO
VCCIO_B3B4
2.5 V
0.075 A
C3LS200 Banks 3 & 4 VCCIO
VCCIO_B5B6
2.5 V
0.170 A
C3LS200 Banks 5 & 6 VCCIO
1.8V
1.8 V
DDR2 Devices, Flash VDD,
1.153 A
Oscillator
0.9VTT & 0.9VREF
0.9 V
1.450 A DDR2 ADDR/CMD Term & Ref
VCCIO_B7
1.8 V
0.300 A
C3LS200 Bank 7
R
SENSE
VCCIO_B8
1.8 V
C3LS200 Bank 8
0.300 A
R
SENSE
C3LS_VCCINT
1.2 V
5.878 A
R C3LS200 VCCINT
SENSE
VCCD_PLL
1.2 V
0.100 A
C3LS200 VCCD_PLL
R
SENSE
1.2V
1.2 V
0.608 A Enet PHY DVDD
2–45