LinkSwitch™-TN2 Switcher IC

Power Integrations' LinkSwitch-TN2 family of ICs for non-isolated off-line power supplies provide dramatically improved performance compared to traditional linear or cap-dropper solutions. Designs using the highly integrated LinkSwitch-TN2 ICs are more flexible and feature increased efficiency, comprehensive system level protection, and higher reliability. The device family supports buck, buck-boost, and flyback converter topologies. Each device incorporates a 725 V power MOSFET, oscillator, On/Off control for highest efficiency at light load, a high-voltage switched current source for self-biasing, frequency jittering, fast (cycle-by-cycle) current limit, hysteretic thermal shutdown, and output and input overvoltage protection circuitry onto a monolithic IC.

Design Examples: 

• RDR-506 - 1.44 W Non-Isolated Buck Converter
• DER-508 - 4.75 W Dual Output Power Supply
• DER-507 - 175 mW Constant Voltage, Universal Input, Non-Isolated Buck Converter
• DER-574 - 1.65 W Non-Isolated Tapped Buck Power Supply