1500W DC-DC Buck Converter | 12–90V to 2.5–72V, 50A Adjustable
1500W DC-DC Buck Converter | 12–90V to 2.5–72V, 50A Adjustable
Gaqqee 1500W DC-DC Step-Down (Buck) Converter Module
Take precise control of your DC power supply with the Gaqqee 1500W Buck Converter Module. Whether you're powering motors, charging battery banks, running LED systems, or building custom electronics, this non-isolated step-down module delivers wide-range voltage and current adjustability with up to 97% conversion efficiency — all in a robust, CE & RoHS certified package.
Made in Mainland China.
Key Features
- Wide Input/Output Range: Accepts DC 12–90V input and delivers adjustable DC 2.5–72V output to accommodate a broad spectrum of applications and equipment requirements.
- High Power Capacity: Supports up to 1500W maximum output power and up to 50A continuous output current (requires well-ventilated operating environment).
- Long-Handle Precision Potentiometers: Easily dial in your exact voltage and current settings by hand — no screwdrivers needed for quick, accurate adjustment.
- Adjustable Constant Voltage & Constant Current (CV/CC): Both output voltage (2.5–72V) and output current (1.5–50A) are independently configurable to suit varied application scenarios.
- Pre-Fitted Terminal Block Design: Supplied with terminal blocks for fast, secure wiring connections right out of the box.
- External Meter Compatibility: Supports external voltmeters and ammeters for real-time output monitoring, giving you complete operational visibility.
- ON/OFF Switch Control: Built-in power switch for effortless output management without disconnecting wiring.
- Thermostatically Controlled Cooling Fan: Air-cooled fan activates automatically at approximately 50°C to maintain safe operating temperatures.
- Short-Circuit Protection: Constant current limiting provides short-circuit protection for connected loads.
- High Efficiency: Up to 97% conversion efficiency reduces heat and energy waste.
- CE & RoHS Certified: Meets EU safety and environmental compliance standards.
Technical Specifications
| Module Type | Non-isolated Buck Converter (BUCK) |
| Input Voltage | DC 12–90V (for 12–15V input, short-circuit the 12–15V port) |
| Output Voltage Range | DC 2.5–72V (adjustable; max output = input × 0.8) |
| Output Current Range | DC 1.5–50A (continuously adjustable) |
| Maximum Output Power | 1500W (in well-ventilated environment) |
| Conversion Efficiency | Up to 97% |
| Operating Frequency | 80 kHz |
| Operating Temperature | -10°C to +65°C |
| Cooling Method | Air-cooled (fan activates ~50°C) |
| Short-Circuit Protection | Yes (constant current limiting) |
| Reverse Polarity Protection | None — reverse connection strictly prohibited |
| Input Over/Under-Voltage Protection | None — do not exceed rated input voltage |
| Output Reverse Current Protection | None — add a reverse protection diode when charging batteries or driving inductive loads (e.g., motors) |
| Certifications | CE, RoHS |
| Brand | Gaqqee |
| Country of Origin | Mainland China |
What's in the Box
- 1 × 1500W DC-DC Step-Down Power Module (Gaqqee)
Important Safety Notes
- This is a non-isolated buck converter — output voltage is always lower than input voltage.
- Do NOT reverse polarity on the input — there is no reverse polarity protection.
- Do NOT exceed rated input voltage (90V DC max).
- Always operate in a well-ventilated environment at full power loads.
- When connecting to batteries or inductive loads, always add an external reverse protection diode.
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Frequently Asked Questions
Q: What is the maximum output voltage of this 1500W buck converter module?
A: The maximum output voltage is 72V DC, achievable when the input is 90V DC. The formula is: Input Voltage × 0.8 = Maximum Output Voltage. For example, with a 40V input, the maximum output is 32V. The minimum adjustable output voltage is 2.5V.
Q: Does this DC-DC step-down module have reverse polarity protection?
A: No. This module does not include reverse polarity, over-voltage, or under-voltage protection. You must ensure correct polarity is maintained at all times. When driving inductive loads (such as motors) or charging batteries, an external reverse protection diode must be added to prevent damage.
Q: How does the cooling system work on this buck converter module?
A: The module uses an air-cooled thermostatically controlled fan that activates automatically when the module temperature reaches approximately 50°C. For maximum output power operation (up to 1500W), the surrounding environment must be well-ventilated to maintain safe operating temperatures between -10°C and +65°C.
Q: Can I use this module to charge lithium or lead-acid battery banks?
A: Yes, this adjustable CV/CC (constant voltage / constant current) buck converter is well-suited for battery charging applications. However, because the module has no output reverse current protection, you must install an external reverse protection diode between the module output and the battery to prevent back-current damage to the module.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.