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

Other Low Power System Requirements

To help meet multiple world-wide Energy Regulations the +5VSB standby rail must meet the following efficiency as shown in Table 4-5 which is measured with the main outputs off (PS_​ON# high state). These World-Wide Energy Regulations and standards include: Blue Angel* system requirements, RAL-UZ 78, US Presidential executive order 13221, ENERGY STAR*, ErP Lot 6 requirements (2010 and 2013 levels), and 2014 ErP Lot 3 requirements. Additionally, if any Computers use an Alternative Low Power Mode (ALPM) then the +5VSB standby efficiency has similar requirements as shown below.

Table 4-5: Recommended Standby Rail DC and AC Power Efficiency

5VSB

Load Target

5VSB

Actual Load

Efficiency Target (both 115V and 230V input)

Remark

Max / Label

3.0A / Label

75%

Recommend

1.5 A

75%

REQUIREDALPM and ErP Lot 3 2014

1.00 A

75%

Recommend

0.55 A

75%

REQUIREDALPM and ErP* Lot 3 2014

90 mA

55%

Recommend

45 mA

45%

REQUIREDErP* Lot 6 2013