Ultra-low Standby/No-load Power Solutions
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
- 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.
Recommended Product Families
|SENZero™||AC Power Supply||NA|
|CAPZero™||AC Power Supply|
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.