ATX Version 3.0 Multi Rail Desktop Platform Power Supply

Design Guide

ID 336521
Date 01/02/2022
Version 2.0
Public
Document Table of Contents

+5VSB Fall Time - RECOMMENDATION

Power supply 5VSB is recommended to go down to low level within 2 seconds under any load condition after AC power is removed as shown in Figure 4-7. Intel® test plan will test at Light 20% Load. If system requires specific +5VSB fall time, the PSU design is recommended to support it.

Figure 4-7: 5VSB Fall Time

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