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MAXREFDES1234: Miniature 5W DC-DC Flyback Converter Using the MAX17596

MAXREFDES1234

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Description

Flyback converters are the preferred topology in isolated converters for medium and low power range applications due to their simplicity and economic considerations. As flyback converters are isolated converters, the output voltage and the current are traditionally regulated by utilizing the secondary side regulation (SSR) composed of an optocoupler and a secondary-error amplifier.

The MAXREFDES1234 is a miniature, isolated power supply that can deliver 5V at 1A of load current. The design uses the MAX17596 peak-current-mode controller operated in discontinuous-conduction mode (DCM) flyback topology to efficiently control the MOSFET switching, current sense, output-voltage feedback sense, and optimization. An additional bias winding provides a power supply to the device under operating conditions so that the primary winding of the flyback transformer can function at high input voltages up to 160V.

Features

  • Miniature Design Optimized for Small Size
  • 24V to 160V Input Range
  • Isolated Output of 5V DC at 5W
  • Cycle-by-Cycle Current Limit
  • Resistor-Programmable UVLO/OVI Threshold
  • Low-Cost DCM Flyback Design
  • Galvanic Isolation Up to 1500VRMS
  • Proven PCB Layout
  • Fully Assembled and Tested

  • MAXREFDES1234: Miniature 5W DC-DC Flyback Converter Using the MAX17596

    The MAXREFDES1234 is a miniature, isolated power supply that can deliver 5V at 1A of load current. MAXREFDES1234: Miniature 5W DC-DC Flyback Converter Using the MAX17596

  • MAXREFDES1234: Miniature 5W DC-DC Flyback Converter Using the MAX17596

    The MAXREFDES1234 is a miniature, isolated power supply that can deliver 5V at 1A of load current. MAXREFDES1234: Miniature 5W DC-DC Flyback Converter Using the MAX17596

The MAXREFDES1234 is a miniature, isolated power supply that can deliver 5V at 1A of load current.

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Designed, Built, Tested

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

 

Schematic

PCB Layout

Test Results

Parametrics

Input Type Vin(Min) Vin(Max) Iout(Max) Single/Multiple Output Vout(V) Pout(W) Isolated/Non-Isolated Topology
DC 24 160 1 - 5 5 Isolated Flyback

Parametrics

Input Type DC
Vin(Min) 24
Vin(Max) 160
Iout(Max) 1
Single/Multiple Output -
Vout(V) 5
Pout(W) 5
Isolated/Non-Isolated Isolated
Topology Flyback

Maxim Devices (1)

Part Number Name Product Family Order Design kits and evaluation modules
MAX17596 Peak-Current-Mode Controllers for Flyback and Boost Regulators Isolated Power Buy Now Design Kits

Maxim Devices (1)

Part Number Product Family
Isolated Power
Peak-Current-Mode Controllers for Flyback and Boost Regulators

Design Files (4)

Title Type Size Date
maxrefdes1234-bom PDF 374KB 2019-09-03
maxrefdes1234-pcb PDF 696KB 2019-09-03
maxrefdes1234-schematic PDF 23KB 2019-09-03
TTS MAXREFDES Test Results Template_Rev 0_0318 PDF 965KB 2019-09-03
Date Type
2019-09-03

maxrefdes1234-bom

(PDF, 374KB)

2019-09-03

maxrefdes1234-pcb

(PDF, 696KB)

2019-09-03

maxrefdes1234-schematic

(PDF, 23KB)

2019-09-03

TTS MAXREFDES Test Results Template_Rev 0_0318

(PDF, 965KB)

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