Power Integrations INN3268C | Demoboard RDR-659

Description

This engineering report describes an output power supply intended for a USB wall outlet charger. The 30 W output (selectable 5.1 V / 6 A or 9.2 V / 3.3 A or 15.3 V / 2 A) rail isdesigned 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.

Features

• 30W compact power supply for high power USB type A/C port charging.

• 89% average efficiency at nominal AC input

• <30 mW no-load input power
• 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 2.0 kV common mode surge, 1.0 kV differential surge and EN55022 conducted EMI

Typical applications

• AC Outlet with USB Ports

More information

• Datasheet
• IC product information