Universal AC Input 65W Dual USB Type-C Port USB PD Charger Reference Design With Integrated GAN
Description
This reference design is a 65W, dual USB Type-C® port USB power delivery (PD) charger reference design with integrated flyback controller and Gallium nitride (GaN) power switch. This design can deliver 65W full rated power across 90VAC to 264VAC and meet efficiency standards and regulations such as DoE Level VI and CoC V5 Tier 2 efficiency standards for average efficiency across 25%, 50%, 75%, and 100% while also achieving low standby power consumption. The AC-DC stage flyback converter UCG28826 features VCC self-bias and simplifies the circuity by eliminating auxiliary winding as well as associated VCC rectifier circuity. The DC-DC stage buck converter TPS56837HA switching frequency runs at 500kHz which can minimize the buck stage size further, yielding to 2.3W per cubic centimeters power density.
Features
- Achieve 91.8% efficiency at 90VAC, single port
- 2.3W per cubic centimeter power density based on PCB size
- Meets DoE Level VI and CoC V5 Tier2 efficiency standards
- No load power consumption 23mW at 115VAC, 30mW at 230VAC
- Full independent power 65W on each USB port
