1200W/1500W DC-DC Step-Down Buck Converter Power Module
1200W/1500W DC-DC Step-Down Buck Converter Power Module
1200W / 1500W Adjustable DC-DC Step-Down Power Supply Module
Take full control of your power delivery with this high-performance DC-DC buck (step-down) converter module by Gaqqee. Designed for engineers, hobbyists, and electronics professionals, this module steps voltage down from a wide DC 15V–90V input to a precise, adjustable DC 2.5V–72V output — making it the ideal solution for powering motors, computers, LED systems, battery chargers, and other high-demand applications.
With a selectable maximum output power of 1200W or 1500W and a conversion efficiency of up to 97%, this buck module minimises energy loss and heat generation while delivering rock-solid, stable voltage output. The air-cooled design features a thermostatically controlled fan that activates at approximately 45°C, ensuring reliable continuous operation in demanding environments.
Key Features
- Wide Input Range: DC 15V–90V input (10–15V also supported via terminal shorting)
- Adjustable Output: DC 2.5V–72V — fine-tune voltage to suit any application
- Selectable Power Rating: 1200W or 1500W maximum output power
- Up to 97% Conversion Efficiency: Reduces energy waste and minimises heat
- High Continuous Output Current: 25A (1200W model) / 45A (1500W model) in ventilated environments
- Maximum Output Current: 30A (1200W model) / 50A (1500W model)
- Constant Voltage Output: Ensures stable power delivery for precision-sensitive equipment
- Air-Cooled with Thermostatic Fan: Fan activates ~45°C for efficient heat management
- Output ON/OFF Switch Interface: Built-in (user wiring required)
- Operating Temperature: -10°C to +65°C
- Operating Frequency: 80kHz
Full Specifications
| Module Type | Non-isolated Buck Converter (BUCK) |
| Input Voltage | DC 15V–90V |
| Output Voltage | DC 2.5V–72V (adjustable) |
| Max Output Power | 1200W / 1500W (selectable) |
| Continuous Rated Power | 1000W (1200W model) / 1200W (1500W model) |
| Continuous Rated Current | 25A (1200W model) / 45A (1500W model) |
| Max Output Current | 30A (1200W model) / 50A (1500W model) |
| Conversion Efficiency | Up to 97% |
| Operating Frequency | 80kHz |
| Cooling Method | Air-cooled (thermostatically controlled fan, activates ~45°C) |
| Operating Temperature | -10°C to +65°C |
| Protections | Current limiting up to 30A/50A; no reverse polarity, under-voltage, or over-voltage protection — handle with care |
| Country of Origin | Made in Mainland China |
Important Usage Notes
- Output voltage must satisfy the step-down condition: Input Voltage × 0.8 = Maximum Output Voltage
- For 10–15V input: short the '12–15V' terminals. Inputs exceeding 15V after shorting will damage the module. The ON/OFF function will be inoperative when shorted.
- Inductive loads (e.g., motors) connected to the output must incorporate reverse protection diodes — no built-in output reverse current protection.
- Reverse polarity connection is strictly prohibited.
- Requires a well-ventilated operating environment for peak power performance.
What's in the Box
- 1 × 1200W or 1500W DC-DC Buck Converter Module (your choice)
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Frequently Asked Questions
Q: What is the difference between the 1200W and 1500W versions of this DC-DC buck converter module?
A: The 1200W model supports a maximum output current of 30A and a continuous rated current of 25A (rated power 1000W in a ventilated environment). The 1500W model supports a maximum output current of 50A and a continuous rated current of 45A (rated power 1200W in a ventilated environment). Both versions share the same input/output voltage range and efficiency. Choose based on your application's current and power requirements.
Q: Can I use this step-down module with a 12V input?
A: Yes — by shorting the '12–15V' terminals, you can use a 10–15V input. However, once shorted, inputs exceeding 15V will damage the module, and the ON/OFF switch interface will be non-functional. For all other use cases, the standard input range is DC 15V–90V.
Q: Does this buck converter module have short-circuit or overvoltage protection?
A: This module does not include dedicated short-circuit, under-voltage, over-voltage, or reverse polarity protection circuits. It does offer current limiting up to 30A (1200W model) or 50A (1500W model). Users must take care to avoid reverse connections, voltage spikes above 90V, and short circuits. For inductive loads such as motors, reverse protection diodes must be added externally.
Q: What operating environment does this power module require for peak performance?
A: This module is air-cooled with a thermostatically controlled fan that activates at approximately 45°C. For maximum continuous rated power output, a well-ventilated environment is required. Operating temperature range is -10°C to +65°C. Avoid enclosed or poorly ventilated enclosures when running at high power loads.
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.