The new LinkSwitch-XT2 family of offline, low-power converter ICs from Power Integrations offers high accuracy, high efficiency and excellent no-load performance. They target isolated and non-isolated flyback applications in which accurate regulation of output voltage and current are important. The new ICs can deliver up to 6.1 Watts in wide-input range designs, and up to 9,2 Watts for 230 V a.c. open-frame applications.
Designed for flyback topologies, LinkSwitch-XT2 delivers designs that exhibit current and voltage regulation of better than ±3% and typical efficiency above 80%, while consuming less than 10 mW in no-load conditions. High (132 kHz) operating frequency enables the use of small power transformers, while the programmable current limit function enables further transformer optimisation.
The converters combine a 725 V power MOSFET with control circuitry on a single silicon die. Integrated safety and reliability features include input over-voltage protection, hysteretic thermal shutdown for over-temperature protection, and auto-restart for output short circuit, over-voltage and open-loop protection.
The performance of LinkSwitch-XT2 ICs makes them ideal for small appliances such as microwave ovens, IoT applications, utility meters, industrial and smart-home installations. They come in P-package (DIP-8C), D-package (SO-8C) and G-package (SMD-8C) formats.
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