Power Integrations Launches LinkSwitch

23 DECEMBER 2008

Power Integrations, the leader in high-voltage analog integrated circuits for energy-efficient power conversion, today announced additions to its extremely successful LinkSwitch family of AC/DC switched-mode power conversion ICs. The new LinkSwitch-CV series of devices includes the LNK626PG, the world’s highest-power accurate constant voltage (CV) integrated switcher IC with primary-side control. The new devices target applications requiring +/-5% voltage accuracy, such as AC/DC adapters up to 10 W, auxiliary power supplies for appliances up to 17W and multiple-output supplies for consumer products.
LinkSwitch-CV integrated circuits simplify the design of CV converters by eliminating all secondary-side CV and control-loop compensation circuitry, significantly reducing the system cost. System reliability is greatly increased by the elimination of the optocoupler. Moreover, the new devices feature extremely high energy efficiency, beating ENERGY STAR 2.0 specifications for external power supplies by 10% across the entire load range and consuming under 70mW in no-load mode. The new devices combine a 700V power MOSFET, on/off control state machine, self-biasing circuit, frequency jittering, cycle-by-cycle current limit and hysteretic thermal shutdown circuitry.

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