MAXREFDES1218: 24V, 3A Average Current, 4A Peak Current Active Clamp Forward DC-DC Converter Using the MAX17599


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The MAXREFDES1218 is an active-clamp forward power supply that delivers up to 4A at 24V from a 18V to 36V supply voltage. It is designed for industrial equipment that needs high power isolated power supply. The typical application of the MAXREFDES1218 is an IO-Link® application that needs a 24V isolated voltage from an industrial 24V supply voltage.

The MAXREFDES1218 illustrates techniques using the active-clamp forward controller to generate isolated voltages. This document explains how the MAX17599 activeclamp forward controller can be used to generate 24V isolated voltage from 18V to 36V input voltage. An overview of the design specification is shown above.


Designed, Built, Tested

Board pictured here has been fully assembled and tested. Not available for sale.



Input Type Vin(Min) Vin(Max) Iout(Max) Single/Multiple Output Vout(V) Pout(W) Isolated/Non-Isolated Topology
DC 18 36 4 - 23.76 96 Isolated Forward


Input Type DC
Vin(Min) 18
Vin(Max) 36
Iout(Max) 4
Single/Multiple Output -
Vout(V) 23.76
Pout(W) 96
Isolated/Non-Isolated Isolated
Topology Forward

Maxim Devices (1)

Part Number Name Product Family Order Design kits and evaluation modules
MAX17599 Low-IQ Wide-Input-Range Active-Clamp Current-Mode PWM Controllers Isolated Power Buy Now Design Kits

Maxim Devices (1)

Part Number Product Family
Isolated Power
Low-IQ Wide-Input-Range Active-Clamp Current-Mode PWM Controllers

Design Files (4)

Title Type Size Date
maxrefdes1218-pcb PDF 671KB 2019-07-08
maxrefdes1218-schematic PDF 23KB 2019-07-08
MAXREFDES1218 - Design Verification Testing PDF 107KB 2019-07-08
maxrefdes1218-bom PDF 106KB 2019-07-08
Date Type


(PDF, 671KB)



(PDF, 23KB)


MAXREFDES1218 - Design Verification Testing

(PDF, 107KB)



(PDF, 106KB)

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