Intel ATX12V manual Remote Sensing, Typical Power Distribution

ATX12V Power Supply Design Guide

Version 2.0

3.2.2. Remote Sensing

The +3.3 VDC output should have provisions for remote sensing to compensate for excessive cable drops. The default sense should be connected to pin 11 of the main power connector. The power supply should draw no more than 10 mA through the remote sense line to keep DC offset voltages to a minimum.

3.2.3. Typical Power Distribution

DC output power requirements and distributions will vary based on specific system options and implementation. Significant dependencies include the quantity and types of processors, memory, add-in card slots, and peripheral bays, as well as support for advanced graphics or other features. It is ultimately the responsibility of the designer to derive a power budget for a given target product and market.

Table 3 through Table 5 and Figure 1 through Figure 3 provide sample power distributions and a graphical recommendation for cross loading. It should not be inferred that all power supplies must conform to these tables, nor that a power supply designed to meet the information in the tables will work in all system configurations.

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