RDK-659, Reference Design Board, INN3268C-H202, AC Outlet with USB Ports

30W supply for wall outlet using InnoSwitch3-CP INN3268C-H202. It is an output power supply intended for a USB wall outlet charger. The 30W output (selectable 5.1V / 6A or 9.2V / 3.3A or 15.3V / 2A) rail is designed for a high power USB charging with Type-A or Type-C ports. The output utilizes INN3268C from the InnoSwitch3-CP family of ICs. This design shows high power density and efficiency that is possible due to the high level of integration of the InnoSwitch3-CP controller providing exceptional performance. DER-659 is a high-line input flyback converter design. The key design goals were high power density, high efficiency, low no load consumption and best in class thermal performance. This is intended for wall outlet USB chargers.

• Input voltage range from 180VAC to 265VAC
• Less than 30mW no-load input power
• Greater than 89% average efficiency at nominal AC input
• All the benefits of secondary side control with the simplicity of primary-side regulation
• Insensitive to transformer variation
• Extremely fast transient response independent of load timing
• Synchronous rectification for higher efficiency
• Accurate thermal protection with hysteretic shutdown
• Input voltage monitor with accurate brown-in/brown-out and overvoltage protection
• Meets IEC 2KV common mode surge, 1KV differential surge and EN55022 conducted EMI