This reference design is a 65-W USB PD3.0 adapter
targeted for many charging applications including
mobile phones, laptops and tablets. The design
achieves high efficiency and power density with the
use of LMG3624 integrated GaN FET with current sense emulation. High efficiency
is enabled with the quasi-resonant flyback, which
provides a balance between simplicity and low
switching losses.
Features
- 25.29-W/in³ power density achieved for compact adapter designs
- 92.83% efficiency at full-load, 90-Vac input
- 94.09% efficiency at full-load, 115-Vac input
- 94.32% efficiency at full-load, 230-Vac input
- 160-mW loss reduction provided with integrated lossless current sensing
- 30-mW standby power at 115 Vac