ATX Version 3.0 Multi Rail Desktop Platform Power Supply
Design Guide
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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 | |