EU CoC and Ecodesign Requirements
The European Union published its Code of Conduct on Energy Efficiency of External Power Supplies Version 5 in October 2013. Tier 1 effectively harmonizes the EU with DoE Level VI, noting the differences in scope detailed below, and became effective as a voluntary requirement from January 2014, some two years ahead of Level VI. Its adoption as an EU Ecodesign rule is expected to be mandated from January 2017. The more stringent Tier 2 became effective on a voluntary basis from January 2016 and is expected to become mandatory as an Ecodesign rule from January 2018.
The key difference between the CoC requirements and Level VI is the new 10% load measure, which imposes efficiency requirements under a lowload condition where historically most types of power supplies have been notoriously inefficient. It is important to note that CoC does not distinguish between direct and indirect operation external power adapters. While CoC Tier 1 includes the new 10% load measure, its noload and active mode limits are less stringent than DoE Level VI.
CoC Tier 2 further tightens the noload and active mode power consumption limits for key classes of power adapters enacted by Level VI i.e. at output powers ≤49 W and 49 W < Pout ≤ 250 W and covers both standard voltage and low voltage adapters. The table below details the additional requirements imposed by Tier 2.
0.3 W ≤ P_{out} < 1 W

≥ 0.50 x P_{out} +0.146

≥ 0.50 x P_{out} +0.046

≤ 0.150

1 W < P_{out} ≤ 49 W

≥ 0.0626 x ln(P_{out}) + 0.646

≥ 0.0626 x ln(P_{out}) + 0.546

≤ 0.150

49 W < P_{out} ≤ 250 W

≥ 0.890

≥ 0.790

≤ 0.250

P_{out} > 250 W

N/A

N/A

N/A

0.3 W ≤ P_{out} < 1 W

≥ 0.50 x P_{out} +0.086

≥ 0.50 x P_{out}

≤ 0.150

1 W < P_{out} ≤ 49 W

≥ 0.0755 x ln(P_{out}) + 0.586

≥ 0.072 x ln(P_{out}) + 0.50

≤ 0.150

49 W < P_{out} ≤ 250 W

≥ 0.880

≥ 0.780

≤ 0.250

P_{out} > 250 W

N/A

N/A

N/A

0.3 W ≤ P_{out} ≤ 1 W

≥ 0.50 x P_{out} + 0.169

≥ 0.50 x P_{out} + 0.060

≤ 0.075

1 W < P_{out} ≤ 49 W

≥ 0.071 x ln(P_{out})  0.00115 x P_{out} + 0.670

≥ 0.071 x ln(P_{out})  0.00115 x P_{out} + 0.570

≤ 0.075

49 W < P_{out} ≤ 250 W

≥ 0.890

≥ 0.790

≤ 0.150

P_{out} > 250 W

N/A

N/A

N/A

0.3 W ≤ P_{out} ≤ 1 W

≥ 0.517 x P_{out} + 0.091

≥ 0.517 x P_{out}

≤ 0.075

1 W < P_{out} ≤ 49 W

≥ 0.0834 x ln(P_{out})  0.0011 x P_{out} + 0.609

≥ 0.071 x ln(P_{out})  0.00127 x P_{out} + 0.518

≤ 0.075

49 W < P_{out} ≤ 250 W

≥ 0.880

≥ 0.780

≤ 0.150

P_{out} > 250 W

N/A

N/A

N/A
