Power Integrations, Inc. PMIC - PMIC - AC DC Converters, Offline Switchers - TOP250FN TOP250FN

The TOP250FN is an offline switcher from Quarktwin Technology Ltd. designed for AC to DC conversion using flyback topology. It operates at a switching frequency of 132 kHz, which can be reduced to 66 kHz for specific applications. This device supports a maximum output power of 45 W in a non-ventilated enclosed adapter and up to 135 W in an open frame design. The integrated features include soft-start functionality, hysteretic thermal shutdown for fault recovery, and programmable current limit, enhancing design flexibility and system reliability. The device is optimized for energy efficiency, with low consumption in remote off mode (80 mW at 110 VAC and 160 mW at 230 VAC). It incorporates line under-voltage and over-voltage detection to prevent operational glitches and extend surge limits. The frequency jittering feature helps reduce electromagnetic interference (EMI), potentially lowering EMI filtering costs. The TOP250FN is suitable for applications requiring compact power supplies with high efficiency and minimal external components.