TNY290PG

The TNY290PG from Power Integrations is part of the TinySwitch-4 family, offering energy-efficient, off-line switching solutions. This device integrates a 725V rated MOSFET, increasing de-rating margin and providing line-compensated overload power without additional components. It dramatically reduces maximum overload variation over a universal input voltage range.

Designed for flyback topology, the TNY290PG operates with a frequency between 124kHz and 140kHz. It offers a minimum continuous output power of 20W in adapter configurations and up to 28.5W in peak or open-frame applications. The device features simple ON/OFF control, selectable current limit through a BP/M capacitor value, and self-biasing, eliminating the need for external bias components.

Enhanced safety and reliability features include accurate hysteretic thermal shutdown protection with automatic recovery, and auto-restart for fault conditions like short-circuit and open loop, delivering less than 3% of maximum power. The TNY290PG is housed in an 8-DIP package suitable for through-hole mounting.

This component is well-suited for various power supply applications requiring high efficiency and low system cost. Its design considerations include selectable current limits for optimizing efficiency in enclosed adapters or increasing peak power in open-frame designs. The frequency jittering feature helps reduce EMI filter costs.