System Board 6285

MAXREFDES113#: ISOLATED 24V TO 12V 20W POWER SUPPLY

Overview

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. As with all Maxim

reference designs, the BOM, schematics, layout files, and Gerber files are all available in the Design

Resources tab. In addition, boards are available for purchase; most boards feature through-hole pins

for immediate board placement and accelerated prototyping.

MAXREFDES113# is an efficient flyback topology with 24V input, and a 12V output at 20W of power

(1.6A). The design features the MAX17596, a peak-current-mode converter with flexible switching

frequency. This entire circuit fits on a 20mm × 35mm board.

Features

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Functional Insulation

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Compact and flexible

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Minimal external components

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Robust operation in adverse environments

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12V 1.6A with 20% Over Range Current

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±5% Output Accuracy

Applications

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Industrial control and automation

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Process control

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PLC

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Telecom and Datacom power supplies

MAXREFDES113# System Board