D-Sun 3A DC-DC Buck-Boost Adjustable Voltage Regulator Module
D-Sun 3A DC-DC Buck-Boost Adjustable Voltage Regulator Module
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D-Sun 3A DC-DC Buck-Boost Adjustable Voltage Regulator Module
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A compact DC-DC buck-boost converter for electronic projects requiring an adjustable regulated voltage. The module can step voltage up or down, making it useful for model railway lighting, Arduino accessories and other low-voltage electronics.
Supplier specifications (AliExpress version shown)
- Input: DC 3–20V
- Adjustable output: DC 1.2–18V, set using the onboard potentiometer
- Maximum rated current: 3A, subject to input voltage, output voltage and thermal limits
- Maximum stated power: 24W
- Board dimensions: 25 × 18mm (length × width)
- Switching frequency: 450kHz
- Enable (EN) connection: low disables output; high enables output (normally enabled)
- One buck-boost module supplied
Installation notes
Connect IN+ and IN− to the DC supply, and OUT+ and OUT− to the load. Check polarity and adjust and measure the output voltage with a multimeter before connecting sensitive equipment. Turn off the supply before wiring or changing connections. The supplier advises against direct inductive loads such as motors or fans because of startup current and back-EMF.