Power Integrations Launches New Non-Isolated Flyback Switcher ICs with Best-in-Class Efficiency and Light-Load Operation for Small Power Supplies

Power Integrations announced the LinkSwitch™-XT2SR family of off-line, constant-voltage (CV), non-isolated flyback switcher ICs. The new devices feature exceptionally high efficiency of up to 90 percent for small open-frame power supplies.

With no-load consumption below 5 mW, LinkSwitch-XT2SR ICs easily surpass the requirements of the European Union’s Energy-Related Products (ErP) Directive for standby power consumption. The new ICs deliver 250 mW to the load within the 300 mW ErP allowance, enabling designers of appliances and industrial systems to operate more system functionality in standby mode, enhancing the user experience and saving energy.

Capable of delivering up to 15 W at 230 VAC, LinkSwitch-XT2SR multi-output flyback switcher ICs reduce component count by incorporating a synchronous rectifier driver and an auxiliary, low-current, µVcc output to directly supply an MCU. Advanced protection and safety features include hysteretic thermal shutdown (OTP) and extended creepage between the drain pin and all other pins, improving field reliability. The 725 V MOSFET provides excellent surge withstand performance, while a 900 V switch is available for industrial applications and for geographies where fluctuating mains voltages call for extra safety margin (Graphic: Business Wire, more info)