Item specifics
Description
DC-DC Adjustable Automatic Buck-Boost Power Module Product Overview
This product is a high-efficiency DC-DC automatic buck-boost power module based on synchronous rectification technology, which uses ultra-low on-resistance power MOSFETs to replace traditional rectifier diodes, significantly reducing rectification losses, improving conversion efficiency, and minimizing heat generation. The module supports a wide DC 5-32V input voltage (10V+ recommended) with 1-30V continuously adjustable output, maximum output current of 10A (7A for long-term use), long-term output power of 80W and peak power of 130W. The output voltage remains stable regardless of whether the input is lower, higher, or equal to the set output – for example, with output set to 12V, the output stays stable at 12V even when input varies between 5-32V. The module integrates comprehensive protection including overvoltage, overcurrent, undervoltage, and short-circuit protection, making it ideal for solar charging, automotive power, high-power LED driving, battery charging, and various device power supply applications.
DC-DC Adjustable Automatic Buck-Boost Power Module Key Features
Synchronous Rectification Technology: Uses low-on-resistance power MOSFETs to replace rectifier diodes, significantly reducing rectification losses and improving DC-DC conversion efficiency without the dead zone voltage caused by Schottky barrier voltage.
Automatic Buck-Boost Function: Output voltage remains stable whether input voltage is lower, higher, or equal to the set output voltage.
Wide Input Voltage: Supports DC 5-32V input, 10V or above recommended.
Wide Adjustable Output: DC 1-30V continuously adjustable output with three precision potentiometers for adjusting output voltage, output current, and undervoltage protection threshold.
High Output Current: Maximum 10A output current, 7A recommended for long-term operation.
Constant Voltage / Constant Current Dual Mode: Supports both CV and CC output modes with automatic switching based on load, ideal for battery charging and LED driving.
Comprehensive Protection: Integrated overvoltage, overcurrent, short-circuit, and undervoltage protection with fault indicator LED.
Replaceable Fuse: Input features a replaceable fuse for enhanced power and device protection.
High-Quality Components: 1.6mm thickened gold-plated PCB; imported SMD low-ESR high-frequency capacitors; imported original ICs; and iron-silicon-aluminum (Sendust) core inductor for reduced heat generation.
Efficient Heat Dissipation: Black-anodized heatsink provides better heat dissipation than bare aluminum, with an aluminum backplate attached via thermal pad.
DC-DC Adjustable Automatic Buck-Boost Power Module Applications
This module is widely used in solar charging systems: stabilizing fluctuating solar panel output to a constant voltage for battery charging; automotive power: converting 12V/24V vehicle battery voltage to stable output for devices; battery charging management: charging lead-acid, lithium (including LiFePO4), NiMH/NiCd batteries; high-power LED constant current drivers: providing constant current for LED lighting; DIY adjustable power supplies: lab benchtop power supplies, electronics prototyping and debugging; wind turbine charging: voltage regulation for wind generators.
Specifications: Input DC 5-32V (10V+ recommended), Output DC 1-30V continuously adjustable, Max Current 10A (7A long-term), Long-term Power 80W, Peak 130W. Module dimensions: 77.2×45.5×12.5mm (approx. 15mm with heatsink), mounting holes 71×39mm, weight approx. 45g.
DC-DC Adjustable Automatic Buck-Boost Power Module Key Advantages
Synchronous Rectification for High Efficiency: Compared to traditional rectifier diode solutions, synchronous rectification significantly reduces rectification losses, improving conversion efficiency with lower heat generation.
Automatic Buck-Boost – One Module for All: Wide 5-32V input, 1-30V adjustable output – stable operation whether input is higher, lower, or equal to output, replacing both boost and buck converters.
10A High Current & High Power: Maximum 10A output current, 80W long-term power, 130W peak power – meets high-power load requirements.
CV/CC Dual Mode: Automatic switching between constant voltage and constant current – functions as both a regulated power supply and a constant current charger for versatile applications.
Comprehensive Protection for Safety: Overvoltage, overcurrent, short-circuit, and undervoltage protection with fault indicator LED and replaceable fuse for dual-layer safety.
High-Quality Components for Durability: 1.6mm thickened gold-plated PCB, imported low-ESR high-frequency capacitors, imported original ICs, and Sendust core inductor – built to last.
Optimized Heat Dissipation for Stable Operation: Black-anodized heatsink + aluminum backplate via thermal pad – efficient cooling, no fan required up to 80W.
Low Ripple Output: Output ripple as low as 50mV (12V to 12V, 5A load) – clean power for sensitive devices.
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FAQ
1. What is this DC-DC Automatic Buck-Boost Module?
It is a high-efficiency synchronous rectification automatic buck-boost power module. It can take a 5-32V input and automatically regulate it to a stable DC output voltage between 1-30V, regardless of whether the input is higher, lower, or equal to the set output.
2. What are its key specifications?
Input Voltage: DC 5-32V (10V+ recommended)
Output Voltage: DC 1-30V, continuously adjustable
Output Current: Max 10A, 7A recommended for continuous use
Output Power: 80W continuous, 130W peak
Output Ripple: 50mV (measured at 12V in/12V out, 5A)
Operating Temperature: -45℃ to +85℃
3. What package and dimensions does it have?
It's a PCB module with dimensions of approximately 77.2 × 45.5 × 12.5mm, featuring 4 mounting holes (71×39mm) for easy installation.
4. What applications is this module suitable for?
Solar Charging: Stabilizes the fluctuating voltage from solar panels to charge various batteries.
DIY Power Supply: Provides an adjustable bench power supply for electronics projects.
Vehicle Power: Powers 12V or 24V automotive electronics.
Battery Charging: Charges lead-acid, Li-ion, etc., with constant current (CC) and constant voltage (CV).
5. What do Constant Voltage (CV) and Constant Current (CC) modes mean?
CV Mode: The output voltage is constant, and current varies with the load. Ideal for powering most electronic devices.
CC Mode: The output current is constant, and voltage varies with the load. Used primarily for charging batteries or driving high-power LEDs.
The module automatically switches between these two modes based on the load.
6. What are the three potentiometers on the module for?
There are three trimpots on the module:
CV (Constant Voltage): Sets the desired output voltage.
CC (Constant Current): Sets the maximum output current.
UV (Under-Voltage Protection): Sets the input voltage threshold at which the module shuts down to protect the battery.
7. How do I adjust the output voltage and current?
Adjusting Voltage (CV): Apply input power first, then adjust the CV potentiometer while monitoring the output with a multimeter until the desired voltage is reached.
Adjusting Current (CC): Short the output with an ammeter in series, then adjust the CC potentiometer until the ammeter shows the desired current.
Note: Potentiometers generally increase clockwise and decrease counterclockwise.
8. How does the Under-Voltage Protection (UV) work?
Function: The module cuts off the output when the input voltage drops below the set UV value, protecting the battery from deep discharge.
Setup: Set your input power supply to the desired cut-off voltage, then adjust the UV potentiometer until the fault indicator LED (red) just turns on.
9. What protection features and indicators does it have?
Protections: Includes over-voltage, over-current, and short-circuit protection.
Indicators:
Power LED: Lights up when the module is powered.
Fault LED: Lights up during a fault condition (e.g., UV, OC, SC).
10. What are the key precautions when using it?
Power Limit: Keep continuous loads under 80W; improve cooling for loads exceeding 80W.
Input Polarity: The module does not have reverse polarity protection; ensure correct wiring.
Output Backflow: For charging applications, connect a Schottky diode in series with the output to prevent backflow.
Heat Dissipation: The module generates heat. For high-power or extended use, apply thermal paste and attach a heatsink.