Power Integrations makes it easy to meet the standby power requirements of Ecodesign Directive (EuP), ENERGY STAR, and other emerging energy-efficiency standards.

Of specific interest to standyby and no-load power supply designers are the ways in which PI products help meet standards requirements for EC Ecodesign Lots 6 (Standby and Off-mode) and 7 (External Power Supplies). For more information, see:

• Lot 6 Standby and Off-mode EC 1275/2008 Amendment to Lot 6 - EU 801/2013 (Networked Standby)
• Lot 7 External Power Supplies EC 278/2009

Power Integrations ICs deliver extremely low standby/no-load power with energy saving features

The graph below shows input power vs. output power as load increases for different PI product families. (For greater detail, click on the image.)

The following shows the application of CAPZero, SENZero, and LinkZero-AX to achieve ultra-low, no-load power of <10 mW.

Design Examples

Design Documents	Design Ideas	Design Example Reports	Reference Design Reports
1.5 W Zero No-Load Power
3 W Power Supply with Less Than 10 mW No-Load
3.25 W Low Cost Constant Current/Constant Voltage Charger
12 W Power Supply with >83% Active -mode Efficiency
15 W Power Supply with Less Than 20 mW No-Load
20 W Dual Output Power Supply
27 W Low Profile, Low Standby Consumption Power Supply
27 W High Full-load Efficiency Power Supply
30 W High Efficiency Standby with 12 V Output
65 W Power Supply with Less Than 100 mW No-Load

Recommended Product Families

IC Product Family	Typical Circuit Configuration	Data Sheets	Application Notes
CAPZero™-2	AC Power Supply		NA
InnoSwitch™-EP	Flyback		NA
LinkSwitch™-3	Flyback
LinkSwitch-4	Flyback		NA
LinkZero™-AX	Flyback		NA
SENZero™	AC Power Supply		NA
TinySwitch™-4	Flyback		NA
TOPSwitch™-JX	Flyback

Power Consumption at No-Load

1.5 W Zero No-Load Flyback Power Supply

No-load Input Power in PD mode vs. Input Line Voltage, 25 ºC, 50 Hz. 30 Minute Dwell Time at 230 VAC Prior to Taking Measurements.	Circuit schematic 1.5 W non-isolated flyback power Supply using LinkZero™-AX

15 W PC Standby

Careful transformer design reduced power consumption of this 15 W solution from 29 mW no-load to less than 20 mW	15 W power supply using TinySwitch-III; less than 20 mW input at 230 Vrms no-load

30 W PC Standby

Zero Load Input Power vs. Input Line Voltage, Room Temperature, 60 Hz.	High Efficiency 12 V, 30 W Standby Power Supply Using TOPSwitch®-JX TOP265EG

For information on these designs and to receive detailed design reports, please contact your local PI representative or refer to the design example reports and product families listed above.