MAXREFDES1051: 24V/2A, Active Clamp Forward DC-DC Converter Using MAX17599


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The MAX17599 low IQ active clamp current mode pulsewidth modulation (PWM) controller contains all the control circuitry required for the design of isolated forward converter power supplies. The MAX17599 is optimized for low-voltage industrial (4.5VDC to 36VDC) power supply applications.

The device includes the two ground referenced MOSFET drivers, NDRV and AUXDRV, required to implement the active clamp transformer reset topology for forward converters. Programmable dead time between NDRV and AUXDRV enables low loss zero voltage switching (ZVS) over a wide load range.

The MAX17599 features a programmable switching frequency from 100kHz to 1MHz that allows the power supply designer to optimize the passive components in the power train, resulting in a compact, efficient, and cost-effective isolated power supply. It incorporates adjustable switching-frequency dithering that enables low EMI spread spectrum operation.


  • 20µA Startup Current in UVLO
  • Programmable Input Under-Voltage Lockout
  • Programmable Input Over-Voltage Protection
  • Switching Frequency Synchronization
  • Adjustable Soft-Start
  • Programmable Slope Compensation
  • Fast Cycle-by-Cycle Peak Current Limit
  • 70ns Internal Leading Edge Current Sense Blanking
  • Hiccup Mode Output Short Circuit Protection


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 2 - 24 48 Isolated Active Clamp Forward


Input Type DC
Vin(Min) 18
Vin(Max) 36
Iout(Max) 2
Single/Multiple Output -
Vout(V) 24
Pout(W) 48
Isolated/Non-Isolated Isolated
Topology Active Clamp 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 (5)

Title Type Size Date
maxrefdes1051-fab-assembly ZIP 6MB 2019-11-04
maxrefdes1051_pcb PDF 2MB 2019-07-09
maxrefdes1051_test_results PDF 530KB 2019-07-09
maxrefdes1051_schematic PDF 25KB 2019-07-09
marketing_bom_maxrefdes1051_apps_p2 RC Edit 1-26-2018.xlsx PDF 49KB 2019-07-09
Date Type


(ZIP, 6MB)



(PDF, 2MB)



(PDF, 530KB)



(PDF, 25KB)


marketing_bom_maxrefdes1051_apps_p2 RC Edit 1-26-2018.xlsx

(PDF, 49KB)

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