What are the new energy conservation standards for external power supplies?

The U.S. Department of Energy (DOE) has recently proposed new energy conservation standards for External Power Supplies (EPSs). These proposed standards, known as Trial Standard Level 4 (TSL4), aim to tighten energy efficiency requirements across all types of EPSs. TSLs are a tool used by the DOE to set energy conservation benchmarks.

Do external power supplies have a power efficiency mandate?

At a global level, mandates for power efficiency exist for most consumer electronics and home appliances. External power supplies have had regulations dating back to 2004, when the California Energy Commission created one of the first mandates for efficiency of external power supplies used to power appliances or consumer electronic devices.

What are the new standards for power supply design?

In 2014, the US Department of Energy formalized their newest mandatory standard and the EU’s voluntary Code of Conduct version 5 took effect. This white paper briefly explains the US and EU’s new standards and what they mean to power supply designers.

Do external power supply models qualify for Energy Star?

2) Qualifying Products: In order to qualify as ENERGY STAR, an external power supply model must meet the definition in Section 1.A, as well as either the definition in 1.B or 1.C, and the specification requirements provided in Section 3, below. ENERGY STAR.

How do you know if a power supply meets the new ratings?

In order to determine if a power supply meets the new proposed power supply ratings, a set of international testing standards exist to determine the efficiency of the power supply. For a power supply with a maximum rating of 10W, for example, that power supply is said to have a Nameplate Output Power of 10W.

What percentage of power does a power supply take?

All specifications, both EU and US standards, are based on taking an average of 25%, 50%, 75% and 100% of the nominal output power.