This is an application note about 12 V - 150 W resonant converter with synchronous rectification using the L6563H, L6699 and SRK2000
This document describes the EVL6699-150W-SR demonstration board, a 12 V - 150 W resonant converter designed for all-in-one computer power supplies or high power adapters. The architecture utilizes a two-stage approach featuring a front-end PFC pre-regulator based on the L6563H and a downstream LLC resonant half-bridge converter using the L6699 controller.
| Input mains range | 90 - 264 V,,- frequency 45 to 65 Hz |
|---|---|
| Output voltage | 12 V at 12.5 A continuous operation |
| No load mains consumption | < 0.17 W at 230 V,,, according to ENERGY STAR® 2.0 |
| Avg. efficiency | > 91% at 115 Va,, according to ENERGY STAR® 2.0 |
| Dimensions | 65 x 154 mm, 28 mm component maximum height |
It is tailored to a typical specification of an all-in-one (AIO) computer power supply or a high power adapter.
The board uses the L6563H PFC controller, the L6699 resonant controller, and the SRK2000 SR driver.
The turn-off threshold has been set to 300 V to let the resonant stage operate in the case of mains sag.