TOP248YN [Power Integrations]

TOPSwitch-GX is an integrated off-line switcher family that converts control input current to drain output duty cycle. It integrates a high-voltage power MOSFET, PWM control, fault protection, and control circuitry on a single chip. Key features include extended power range, reduced external component costs, fully integrated soft-start, externally programmable current limit, wider duty cycle (78% default, reducible to 38% via line feed-forward), line UV/OV detection, frequency jittering for EMI reduction, 132 kHz switching frequency (66 kHz half-frequency option), hysteretic thermal shutdown, and EcoSmart energy efficiency with ultra-low standby power consumption.