• XH-M401 DC-DC Step Down Buck Converter – 8V-36V to 1.25V-36V 8A 200W

  Product Description

  The XH-M401 DC-DC Step Down Buck Converter is a high-performance adjustable power supply module designed for efficient voltage regulation in electronic, industrial, and DIY applications. Based on the XL4016 buck converter, the module provides a stable and adjustable DC output voltage while efficiently reducing a higher input voltage to the required lower output voltage.

  The module supports an input voltage range of 8V to 36V DC and provides an adjustable output voltage from 1.25V to 36V DC, making it suitable for a wide range of power supply requirements.

  With a maximum power capability of 200W and load current up to 8A, this buck converter can be used for powering displays, embedded systems, portable equipment, networking hardware, motors, and other suitable DC loads.

  The module operates at a fixed 180 kHz switching frequency and can achieve efficiency of up to 96%, helping reduce power loss and heat generation during voltage conversion.

  Features

  • High-performance DC-DC step-down buck converter
  • Based on XL4016 PWM buck converter
  • Adjustable output voltage
  • Input voltage range from 8V to 36V DC
  • Output voltage adjustable from 1.25V to 36V DC
  • Maximum power output up to 200W
  • Supports load current up to 8A
  • High efficiency up to 96%
  • Fixed 180 kHz switching frequency
  • Built-in thermal shutdown protection
  • Built-in current limiting protection
  • Short-circuit protection
  • Compact PCB design
  • Suitable for high-current power applications
  • Useful for industrial and DIY electronics projects
  • Easy to integrate into custom power supply systems

  Specifications

  Parameter	Specification
  Product Type	DC-DC Step Down Buck Converter
  Module Model	XH-M401
  Main IC	XL4016
  Input Voltage	8V – 36V DC
  Output Voltage	1.25V – 36V DC (Adjustable)
  Maximum Power	200W
  Maximum Load Current	Up to 8A
  Efficiency	Up to 96%
  Switching Frequency	180 KHz
  Short Protection Frequency	48 KHz
  Load / Voltage Regulation	±0.5%
  PWM Duty Ratio	0% – 100%
  Protection	Thermal Shutdown, Current Limiting, Short Circuit
  PCB Size	40 × 65 mm

  Working Principle

  The XH-M401 works as a buck converter, reducing a higher DC input voltage to a lower regulated DC output voltage.

  The XL4016 switching controller rapidly switches the input power at a fixed frequency and uses PWM control to regulate the output voltage. The output can be adjusted using the onboard voltage adjustment control according to the requirements of the connected load.

  The module incorporates protection functions to help safeguard the converter during abnormal operating conditions. In the event of a short circuit, the protection mechanism reduces the switching frequency from 180 kHz to 48 kHz to help protect the circuit.

  Protection Features

  The module includes several built-in protection mechanisms for safer operation:

  • Thermal Shutdown: Helps protect the module from excessive temperature.
  • Current Limiting: Helps limit excessive load current.
  • Short-Circuit Protection: Helps protect the converter during output short circuits.
  • Frequency Reduction During Short Circuit: Switching frequency can reduce from 180 kHz to 48 kHz during short-circuit protection.

  Design and Construction

  The XH-M401 features a compact 40 × 65 mm PCB design that can be easily integrated into custom enclosures and electronic systems.

  Its adjustable voltage output and high-current capability make it suitable for projects where a flexible DC power source is required. The module is designed for direct integration into electronic systems and can be used as an adjustable regulated power supply for compatible loads.

  Adequate ventilation and heat dissipation should be provided when operating the module at high load current or high power.

  Typical Application Scenarios

  Display Technology

  Suitable for providing regulated DC power to LCD monitors, LCD TVs, display systems, and related electronic equipment where the required voltage falls within the module’s output range.

  Portable Power Systems

  Useful as a high-current adjustable power source for portable instruments, electronic equipment, and custom DC power systems.

  Telecom and Networking Equipment

  Can be used in suitable telecom and networking applications requiring adjustable regulated DC power.

  Embedded Electronics

  Suitable for powering microcontrollers, development boards, sensors, modules, and other electronic circuits requiring a regulated DC supply.

  DIY Power Supply Projects

  Useful for building adjustable bench power supplies, custom battery-powered systems, electronic prototypes, and experimental power circuits.

  Applications

  • Adjustable DC power supply
  • Electronics prototyping
  • Embedded systems
  • Arduino projects
  • ESP32 projects
  • Raspberry Pi peripheral power systems
  • LCD and display equipment
  • Telecom equipment
  • Networking equipment
  • Portable instruments
  • Industrial electronics
  • DIY power supply projects
  • Automation systems
  • Battery-powered projects
  • Custom power conversion
  • Laboratory electronics
  • High-current DC applications

  Package Includes

  • 1 × XH-M401 DC-DC Step-Down Buck Converter Power Supply Module

  Product Disclaimer

  Product images are shown for illustrative and representational purposes only. The actual product may vary slightly in PCB colour, component placement, terminal design, labeling, or appearance depending on the manufacturing batch or supplier.

  Always verify the input voltage, required output voltage, load current, maximum power, and wiring configuration before connecting the module to your equipment.

  This module is a power conversion component and should only be used within its specified electrical and thermal limits.

  Important Note

  Variant Information

  This product may be supplied in different external variants, including XH-M401, HW-439, and HW-674, with similar working principles and functionality. The variant may be shipped randomly depending on stock availability.

  Thermal Management

  When operating at high current or high power, adequate cooling, ventilation, and heat dissipation are required to maintain stable operation and prevent excessive heating.

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