P0040 Datasheet, PDF (19/25 Pages) List of Unclassifed Manufacturers – Terasic SFP HSMC Board User Manual

Board Components
3.3 3.3 Power Supply
This section describes the power supply on the SFI HSMC board
The SFP HSMC is powered through the HSMC connector’s 3.3V and 12V pins. The SFP and clocking
circuitry requires 3.3V. A switching regulator powered from the 12 HSMC input produces 4V. Three linear
regulators powered from 4V will produce the 3.3V. The switching frequency is set to 1MHz. The power
distribution network is shown in the figure below. Max power consumption is estimated at 1A on 12V.
Typical power consumption is considerably less than this.
Figure 3.3 Power distribution on the SFP HSMC board
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