EcoSmart charger reference design reduces energy waste
( 01 Nov 2005 )
Power Integrations has unveiled a 3W charger reference design that consumes less than 30mW of no-load power. Typical applications for this design include cellphones, cordless phones, PDAs, MP3 players and other batterypowered portable equipment. The DI-84, consumes 97% less no-load energy than traditional linear transformerbased power supplies and beats the recently announced mandatory regulations from the California Energy Commission (CEC), which permit up to 500mW of noload energy consumption. No-load power, the energy consumed by a charger or adapter when it’s not powering a device but is still plugged into a wall socket, is considered a major source of energy waste, costing consumers billions of dollars annually. The no-load power performance of the DI-84 is achieved through a combination of reducing the IC’s internal power consumption, the low bias current design of the secondary feedback circuits, and efficient transformer design. Built around Power Integrations’ TinySwitch-II power conversion IC family, the 5V, 600mA charger operates over an input voltage range from 85 to 265 VAC.
Keithley Instruments
With more than 60 years of measurement expertise, Keithley Instruments has become a world leader in advanced electrical test instruments and systems from DC to RF (radio frequency). Our products solve emerging measurement needs in production testing, process monitoring, product development, and research...
