MAXREFDES124#, Isolated 12V to 5.5V, 22W No-Opto Flyback Power Supply Reference Design

MAXREFDES124#, Reference Design is an efficient no-opto flyback topology with 12V input, and a 5.5V output at 22W of power (4A). The design features the MAX17690, a peak-current-mode converter with flexible switching frequency and the MAX17606, a secondary side MOSFET driver for a flyback converter. The combination of no opto-coupler and a secondary-side MOSFET results in a design that is optimized for space, cost and efficiency. This entire circuit fits on a 20mm (0.7874in) × 66mm (2.5984in) board