CNC Buck-Boost DC Power Supply – CC CV Adjustable 0.5–30V
CNC Buck-Boost DC Power Supply – CC CV Adjustable 0.5–30V
CNC Buck-Boost DC Power Supply – Precision CC/CV Voltage & Current Control
Take full control of your electronics projects with this compact, feature-packed CNC Buck-Boost DC Power Supply. Whether you're charging batteries, powering DIY circuits, or testing components, this programmable module delivers stable, adjustable output with a clear LCD display and multiple built-in safety mechanisms. Made in Mainland China.
Key Features
- Wide Adjustable Output: Output voltage freely adjustable from 0.5V to 30V; input range 5.0–30V — works as both a step-up (boost) and step-down (buck) converter.
- Constant Current (CC) & Constant Voltage (CV): Limit current adjustable from 0–4A for precise control over power delivery.
- Clear LCD Display: Real-time readout of input/output voltage, output current, power, capacity (Ah), and elapsed time.
- Numerical Control Adjustment: Fast, accurate digital tuning — no fumbling with analog potentiometers.
- Soft Start: Gradual power ramp-up protects sensitive loads on startup.
- π-Type Output Filter: Minimizes output ripple for cleaner, more stable power.
- Thick Heat Sink: Supports up to 35W under natural cooling and up to 50W with enhanced heat dissipation (fan or heatsink upgrade).
- Configurable Default On/Off State: Set the module to power on or remain off at startup — ideal for automated setups.
Comprehensive Protection Mechanisms
- ✅ Input anti-reverse connection — won't burn if wired backwards
- ✅ Output anti-backflow — safely charge batteries without an extra diode
- ✅ Input undervoltage protection (4.8–30V, default 4.8V)
- ✅ Output overvoltage protection (0.5–31V, default 31V)
- ✅ Output overcurrent protection (0–4.1A, default 4.1A)
- ✅ Output over-power protection (0–50W, default 50W)
- ✅ Over-temperature protection (80–110°C, default 110°C)
- ✅ Timeout protection (0–100h, default off)
- ✅ Over-capacity protection (0–60Ah, default off)
Technical Specifications
| Input Voltage | 5.0 – 30V |
| Output Voltage | 0.5 – 30V |
| Output Current | 3A continuous; up to 4A with enhanced heat dissipation |
| Output Power | 35W (natural cooling) / 50W (enhanced cooling) |
| Voltage Display Resolution | 0.01V |
| Current Display Resolution | 0.001A |
| Conversion Efficiency | ~88% |
| Working Frequency | 180 kHz |
| Dimensions | 79mm × 43mm × 26mm |
| Weight | 92g (including packaging) |
| Country of Origin | Made in Mainland China |
What's in the Box
- 1 × CNC Buck-Boost Power Supply Module
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Frequently Asked Questions
Q: Can this CNC buck-boost power supply module both step up and step down voltage?
A: Yes! Unlike a traditional buck (step-down) or boost (step-up) converter, this module can do both. With an input range of 5.0–30V and an output range of 0.5–30V, it can step the voltage up or down as needed, making it extremely versatile for DIY electronics, battery charging, and prototyping applications.
Q: Is it safe to use this module for battery charging?
A: Absolutely. The module includes output anti-backflow protection, meaning you can connect it directly to a battery for charging without adding an external blocking diode. Combined with adjustable overcurrent and over-power protection, it's well-suited for controlled battery charging when configured correctly.
Q: How do I increase the output power beyond 35W?
A: The module supports up to 50W output when enhanced heat dissipation is applied — for example, by attaching an external heatsink or adding active cooling (a small fan). Under natural (passive) cooling, keep loads within the 35W limit for safe, stable long-term operation.
Q: What does the timeout and over-capacity protection do?
A: These are optional programmable safeguards. Timeout protection (0–100h) automatically shuts off the output after a set duration — great for unattended battery charging. Over-capacity protection (0–60Ah) cuts the output once a defined total charge has been delivered, preventing overcharging. Both are off by default and must be enabled manually.
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.