Reference Design Kit for Energy-Efficient Charger/Adapter

6th October 2006
ES Admin
Power Integrations has introduced a reference design kit for an energy-efficient charger/adapter based on its LinkSwitch-LP family of integrated circuits with EcoSmart technology. The new reference design kit (RDK-83) reduces no-load power consumption by 79 percent compared to existing linear solutions, and features a constant-voltage (CV) charger circuit capable of withstanding 10 kV common-mode / 2 kV differential-mode surges.
This level of surge protection is often required in power supplies for products that connect to telephone lines ― such as cordless/wireline phones, answering machines, modems and other telecom devices.

“Designing for adequate surge protection helps to minimize damage to products due to lightning strikes and other over-voltage events and thereby reduces the cost of replacement and repairs,” said Richard Fassler, director of product marketing for Power Integrations. “With the RDK-83 as a guide, designers can develop switched mode power supplies that will withstand 10 kV surges and operate far more efficiently than supplies based on linear transformer technology.”

The RDK-83 contains a working 7.7 V, 210 mA flyback adapter circuit that operates over the universal input voltage range of 85 VAC to 265 VAC. As with all recent PI reference designs, the RDK-83 has a high average active mode efficiency of 66.6 percent, which easily exceeds the ENERGY STAR and California Energy Commission (CEC) specification of 53.2 percent, and no-load power consumption of less than <220 mW at 115 VAC.

Included in the kit are LinkSwitch-LP samples, PCB, an engineering report on the power supply, and a PI Expert™ power supply design software CD-ROM.

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