Power Integrations TOPSwitch-JX Series AC/DC Converter IC, Flyback, 85-265V AC,

The Power Integrations TOPSwitch-JX Series AC/DC Converter IC integrates a high-efficiency, high-voltage power MOSFET and advanced control circuitry into a single monolithic device. Designed for flyback topology, it incorporates EcoSmart™ energy-efficient technology to achieve exceptional performance across the entire load range, with no-load consumption below 100mW at 265V AC.

This device offers high design flexibility, helping to reduce overall system cost while providing extensive protection features. Key functionalities include output overvoltage protection (OVP), line undervoltage detection to prevent turn-off glitches, line overvoltage shutdown for enhanced surge withstand, and an accurate thermal shutdown with large hysteresis (OTP).

With a 725V-rated power MOSFET, it simplifies design derating requirements. The multi-mode PWM control maximises efficiency at all load levels, and operation at 132kHz allows for a reduction in transformer and power supply size. Features such as fully integrated soft-start minimise start-up stress, and frequency jittering helps reduce EMI filter costs.

Comprehensive Protection

• Output short-circuit protection
• Output overcurrent protection
• Output overload protection
• Accurate programmable current limit

Performance Specifications

• Output Power: Up to 148W (open frame) at 230V AC
• Standby Performance: Delivers up to 750mW output power for 1W input at 230V AC
• Optimised line feed-forward for excellent line ripple rejection

Supplied in a SIP-7 package, this through-hole mount IC is a robust and reliable solution for a wide array of power supply applications.