Ultra-low Standby/No-load Power Solutions
Ultra-low Standby/No-load Power Solutions
Power Integrations makes it easy to meet the standby power requirements of Ecodesign Directive (ErP), 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 |
|---|---|---|---|
| 15 W Dual Output Power Supply with >83% Standby Efficiency |  | ||
| 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 |
| InnoSwitch3™-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 |
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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.
