Altera PowerPlay Early Power Estimator User Manual
Page 18
Figure 3-3: Power Tree Design Section in the Main Worksheet
Select a valid configuration from the Power Rail Configuration dropdown. When the Input Parameters
and Power Rail Configuration selections are complete, the power regulator selection will be enabled.
The current values shown for each regulator include the margin for regulator selection purpose. For more
information, refer to the Enpirion worksheet.
Errors regarding improper rail grouping may appear in the error window on the Main worksheet when
the Power Rail Configuration is selected. The following figure shows an example of the error message in
the error window.
Figure 3-4: Error Window in the Main Worksheet
This occurs when the EPE assigns rails with different voltage requirements to the same group. Since each
group is supplied by a single regulator, these errors must be corrected before the EPE can make proper
component selections. This is done in the EPE Report worksheet. Refer to the Report worksheet on how
to correct the error.
Related Information
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on page 3-39
3-8
Power Tree Design
UG-01070
2015.01.20
Altera Corporation
PowerPlay Early Power Estimator Worksheets