System Board 5858

MAXREFDES115#: ISOLATED 24V TO 5V 20W POWER

SUPPLY

Maxim’s power supply experts have designed and built a series of isolated, industrial

power supply reference designs. Each of these power supplies efficiently converts 24V

into useful voltage rails at a variety of power levels. Every power rail is isolated with a

readily available transformer from multiple, global vendors, providing for quick, convenient

transformer selection. Each design has been tested for load and line regulation, as well as

efficiency and transient performance.

MAXREFDES115# is an efficient active clamp topology design with 24V input, and a 5V at

4A (20W) of power. The design features the MAX17599, an active clamp, current-mode

PWM controller optimized for industrial supplies; this entire circuit fits on a 20mm x 55mm

board. As with all Maxim reference designs, the BOM, schematics, layout files, Gerber files

are all available. In addition, all boards feature through-hole pins for immediate board

placement and accelerated prototyping, and are available for purchase.

Features

• Functional Insulation

• Compact and Flexible

• Low Power Dissipation

• Minimal External Components

• Robust Operation in Adverse Industrial Environments

• 5V at 4A Output with 20% Over-Range Current

Applications