Description
Product Overview
The 6.5-40V to 5V DC-DC Step-Down Power Converter Module is a versatile, high-efficiency switching regulator designed to convert higher DC voltages (from 6.5V to 40V) into a stable 5V output suitable for powering USB devices. This all-in-one module combines a buck converter, a digital LED voltmeter, and a USB charging port in a compact, ready-to-use package.
Whether you need to charge a smartphone from a 12V car battery, power a Raspberry Pi from a 24V industrial supply, or monitor battery voltage on a solar power system, this module provides a simple and efficient solution. With its wide input voltage range, it is compatible with 12V, 24V, and even 36V systems commonly found in vehicles, trucks, boats, and industrial equipment.
A standout feature of this module is its intelligent push-button control. Unlike many converters that output power as soon as they are connected, this module defaults to an “output off” state for safety. You must press the “Output Enable” button to activate the USB port. This prevents unwanted power drain or accidental device activation when the module is first connected. Additionally, a “Low Power” button puts the module into an ultra-low-power standby mode, disabling both the display and the USB output to conserve battery power when not in use.
The integrated LED voltmeter provides real-time monitoring of the input voltage, allowing you to keep an eye on your battery’s state of charge. For precision applications, the voltmeter can also be manually calibrated to ensure accurate readings.
Key Features
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Wide Input Voltage Range: Accepts DC input from 4.5V to 40V, with a regulated 5V output available when the input is between 6.5V and 40V. Compatible with 12V, 24V, and 36V systems.
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5V/2A USB Output: Provides a stable 5V output with a maximum current of 2A, suitable for charging smartphones, tablets, MP3 players, and other USB-powered devices.
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High-Efficiency Conversion: Utilizes a switching regulator design to achieve high efficiency and low ripple, minimizing power loss and heat generation compared to linear regulators.
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Integrated LED Voltmeter: Features a built-in digital voltmeter that displays the input voltage in real-time, with an automatic calibration function for accuracy.
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Push-Button Output Control: The “Output Enable” button allows you to turn the USB output on or off as needed, while the “Low Power” button puts the module into standby mode to conserve energy.
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Comprehensive Protection: Includes reverse polarity protection, over-current protection, and over-temperature protection to safeguard the module and your connected devices.
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Compact and Lightweight: Small form factor (approx. 58mm × 21mm × 10mm) and lightweight (approx. 13g) allows for easy integration into tight spaces.
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USB Power Indicator: A convenient LED indicator illuminates when the USB output is enabled, providing clear visual confirmation.
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Voltmeter Calibration Capability: The voltmeter can be manually calibrated to ensure accurate voltage readings for your specific setup.
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Input Voltage | DC 4.5V – 40V (Regulated 5V output requires 6.5V–40V) |
| Output Voltage | 5V (Fixed) |
| Output Current | 2A (Max, continuous) |
| Voltmeter Display | LED Digital Display |
| Voltmeter Calibration | Yes, manual calibration via push buttons |
| Protection Features | Reverse Polarity, Over-Current, Over-Temperature |
| Quiescent Current (Standby) | Ultra-low (approx. 1.5mA when display off) |
| Module Dimensions | Approx. 58mm × 21mm × 10mm (L×W×H) |
| Weight | Approx. 13g |
| Operating Temperature | -40°C to +85°C (Industrial Grade) |
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