Power Integrations recently launched TOPSwitch-JX, a highly integrated family of 16 power conversion ICs incorporating a 725 V power MOSFET for use in flyback power supplies.
The device’s multimode control algorithm maximises power efficiency across the entire load range. High efficiency at full power minimises power wasted during normal operation and reduces the complexity and expense of thermal management on the system. At low power levels, high efficiency enables adapters with very low no-load consumption and maximises power available to the system in standby mode for applications constrained by standards and regulatory controls.
Excellent light-load efficiency and low power consumption in the no-load condition are facilitated by a novel multicycle modulation mode, which reduces the average switching frequency while minimising output ripple and audible noise. This allows designs to meet stringent new efficiency specifications, such as Energy Star and the EC EuP Ecodesign Directive, while maintaining a stable output voltage. Standby power consumption below 100 mW (for a 20 mW load) at 264 V a.c. is easily achieved using TOPSwitch-JX.
The part is available in the new low-profile eDIP package, which is optimised for outstanding heat dissipation in slim form-factor applications such as LCD monitors, TVs and netbook/notebook adapters. The device is also well suited for printers, PC and TV standby, set-top boxes, and other consumer audio/video equipment requiring up to 177 W of power with a universal input voltage range.
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