MAXREFDES1034: High-Efficiency Power Supply for TVs Using MAX17506

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Designed, Built, Tested

The Reference Design Document describes the hardware pictured below. It provides a detailed systematic technical guide to designing a high-efficiency power supply for TVs using MAX17506. The hardware was built according to the linked Schematic, Bill of Materials and PCB Artwork. It was tested by Maxim’s expert applications engineering team in a state-of-the-art design lab and the Test Results are fully documented. Functionality of the design over all electrical operating conditions was verified with the MAXREFDES1177 Simulation Circuit using Maxim’s OASIS Circuit Simulation Tool. Downloadable ECAD/EDA files are available in 7 different formats including OrCAD, Altium, Mentor DX Designer, Eagle and more.


Input Type VIN (MIN)
Isolated/Non-Isolated Topology
DC 11.5 28
5 Single 5 25 Non-Isolated Buck

The MAXREFDES1034 is an auxiliary power supply for TV applications. This design provides a 5V output and up to 5A of load current for system power of auxiliary functions such as monitoring and control. A wide operating range from 11.5V to 28V allows system designers to adapt this design to their input voltage needs. As with most modern TVs, flat panel screens limit the available area for the converter. This power supply is a low-profile design, which considers modern TV sizes and available space. This design focuses on providing high efficiency while limiting the total height to 6mm.

This design is centered around the MAX17506 peak current- mode controller. The design is tested at 12V and 24V, which are common TV system voltages.

Key Features

  • Low-Profile Design (6mm Height)
  • 5V/5A Output
  • Built-In Soft-Start
  • 300kHz Switching Frequency
  • PWM Mode
  • Bootstrap LDO for Improved Efficiency at High VIN
  • Built-In Soft-Start
  • Internally Compensated
MAXREFDES1034 Hardware Enlarge+

This board is not available for purchase.


Test Results

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Bill of Material

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Reference Design Document

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4.5V–60V, 5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation

  • Reduces External Components and Total Cost
  • Reduce Number of DC-DC Regulators to Stock
  • Reduces Power Dissipation