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New Energy Efficiency Requirements

Home News >  New Energy Efficiency Requirements

The US Department of Energy (DOE) has issued a final rule to propose new energy efficiency requirements for external power supplies.


The new regulations apply to all direct external power supplies, including Class A power supplies already covered in the 2007 standard and power not included in previous DOE regulations,such as:Multiple output external power supply.


§Branded output power greater than 250 watts of external power supply Part of an external power supply for a battery that is primarily or partially powered by a motor-driven product.

Single-Voltage External AC-DC Power Supply,Basic-Voltage

Nwmeplatc Output Power(Pout)

Minimum Average Efficiency in Active Mode

(expressed as a decimal)

Maximun Power in No-Load Mode[W]

Pout1W

0.5x Pout+0.16

0.100

1W< Pout49W

0.071xIn(Pout)-0.0014xPout +0.67

0.100

49W< Pout250W

0.880

0.210

Pout>250W

0.875

0.500

Single-Voltage External AC-DC Power Supply,Low-Voltage

Nwmeplatc Output Power(Pout)

Minimum Average Efficiency in Active Mode

(expressed as a decimal)

Maximun Power in No-Load Mode[W]

Pout1W

0.517x Pout+0.87

0.100

1W< Pout49W

0.0834xIn(Pout)-0.0014xPout+0.609

0.100

49W< Pout250W

0.870

0.210

Pout>250W

0.875

0.500

Meet DOE & ERP LEVEL 6 efficiency products:

15W series

SB-2808

Double output :

+8V,1.5A,  -8V,0.375A 

40W series

SF-058A0F

5V,8A 

60W series

SF-125A0F

12V,5A 

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