Renesas Electronics Corporation AC DC Converters, Offline Switches RAA2231814GSP#HA0

The RAA2231814GSP#HA0 is an off-line flyback regulator designed for high input voltage applications, featuring a 900V integrated MOSFET. It supports a single 400V input capacitor for voltages up to 450VAC, which simplifies the design by eliminating the need for two stacked capacitors in high voltage scenarios. The device operates in discontinuous conduction mode (DCM) with a programmable constant frequency range of 50kHz to 100kHz, and it can deliver up to 12W output power for short durations, making it suitable for smart meter power supplies and other isolated power applications. Key protection features include short-circuit protection, overload protection, input undervoltage lockout, and over-temperature protection, ensuring reliable operation. The RAA2231814GSP#HA0 also incorporates valley switching to minimize switching losses and improve thermal performance. Additionally, it enters burst mode operation at light loads to reduce power consumption while maintaining low burst frequencies to avoid interference with communication systems. The product is packaged in a 13-lead SOIC format, suitable for various applications including smart meters, large appliances, and industrial control systems.