Power Integrations, Inc. Power, Motor & Robotics Development Tools RDK-659

The Ref Design Board, AC Outlet with USB Port, part number 91AH8850, is designed for applications requiring a compact power supply with high efficiency. It supports an input voltage range of 180 VAC to 265 VAC and provides multiple output options: 5.1 V at 6 A, 9.2 V at 3.3 A, and 15.3 V at 2 A. The board achieves over 89% average efficiency at nominal AC input and has a low no-load input power consumption of less than 30 mW. Key features include synchronous rectification for improved efficiency, primary-side regulation that simplifies design, and secondary-side control that enhances performance. The design incorporates accurate thermal protection, input voltage monitoring, and compliance with IEC surge and EMI standards. This reference design is suitable for engineers looking to implement a reliable and efficient power management solution in their projects.