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

• PLCs
• Industrial Process Control and Sensors
• Telecom and Datacom Power Supplies