Altera PowerPlay Early Power Estimator User Manual
Page 33
Figure 3-18: Total Thermal Power
thermal power = thermal P
VCC
+ thermal P
PD
+ thermal P
IO
The following figure shows the I/O power consumption. The I
CCIO
power rail includes both the thermal
P
IO
and the external P
IO
.
Figure 3-19: I/O Power Representation
VCC
VCCPD
VCCIO
ICC
ICCPD
ICCIO
Thermal PVCC
Thermal PPD
Thermal PIO
External PIO
Stratix III Device
The VREF pins consume minimal current (typically less than 10 μA) and is negligible when compared
with the current consumed by the general purpose I/O (GPIO) pins; therefore, the PowerPlay EPE
spreadsheet does not include the current for VREF pins in the calculations.
Table 3-8: I/O Power Rail Information
Column Heading
Description
Power Rails
Power supply rails for the I/O pins.
Voltage (V)
The voltage applied to the specified power rail in Volts (V).
Current (A)
The current drawn from the specified power rail in Amps
(A).
Table 3-9: I/O Worksheet Information
Column Heading
Description
Module
Specify a name for the module in this column. This is an
optional value.
UG-01070
2015.01.20
I/O Worksheet
3-23
PowerPlay Early Power Estimator Worksheets
Altera Corporation