SK35 Solar Buck Boost Converter DC CC CV Adjustable Power Module

SK35 Adjustable Solar DC Buck Boost Converter – CC CV Power Module

The SK35 Adjustable Solar Buck Boost Converter is a high-performance DC-DC power module designed for engineers, hobbyists, and DIY enthusiasts who need precise control over output voltage and current. Whether you're building a solar charging system, a lab bench power supply, or a custom battery charger, this versatile module delivers stable constant voltage (CV) and constant current (CC) output in a compact, adjustable design.

Key Features

• Buck-Boost Topology: Operates as both a step-up (boost) and step-down (buck) converter, supporting a wide range of input/output voltage configurations.
• Constant Voltage & Constant Current (CC/CV): Precisely adjustable output for safe, reliable charging of batteries, capacitors, and other DC loads.
• Solar Charging Compatible: Optimized for use with solar panels — ideal for off-grid and renewable energy projects.
• Wide Input Range: Handles a broad DC input voltage range, making it compatible with various solar panels and DC power sources.
• High Efficiency: Low heat generation and high conversion efficiency for extended continuous operation.
• Compact & Durable PCB Design: Lightweight board form factor for easy integration into enclosures, project boxes, or larger electronic assemblies.
• Fully Adjustable: On-board potentiometers allow fine-tuning of both voltage and current limits without additional equipment.

Typical Applications

• Solar panel battery charging systems
• DIY bench power supply builds
• LED driver circuits
• Custom lithium-ion / LiFePO4 battery chargers
• RC vehicle and drone power systems
• Embedded electronics and maker projects

Product Details

• Model: SK35
• Converter Type: Buck-Boost (Step Up / Step Down)
• Output Mode: Constant Voltage (CV) / Constant Current (CC)
• Application: Solar charging, DC power regulation
• Made in: Mainland China

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External Resources

For guidance on electrical safety when working with DC power conversion circuits, visit the OSHA Electrical Safety Resource. For standards on electronic components and energy efficiency, refer to U.S. Department of Energy – Solar Energy Technologies.

Frequently Asked Questions

Q: What is the difference between a buck converter and a boost converter, and does the SK35 support both?

A: A buck converter steps down (reduces) the input voltage to a lower output voltage, while a boost converter steps up (increases) the input voltage to a higher output. The SK35 is a buck-boost converter, meaning it can do both — making it extremely versatile for solar and DC power projects where input voltage may vary above or below your target output.

Q: Can the SK35 be used to charge lithium batteries from a solar panel?

A: Yes. The SK35's CC/CV (constant current / constant voltage) output mode is well-suited for charging lithium-ion, LiFePO4, and other rechargeable battery types. Simply adjust the potentiometers to set the correct charge voltage and current limit for your specific battery pack, and connect it to a compatible solar panel input.

Q: How do I adjust the output voltage and current on the SK35?

A: The SK35 features on-board multi-turn potentiometers for precise adjustment of both output voltage and current limit. Use a small flat-head screwdriver to turn the potentiometers while monitoring output with a multimeter until you reach your desired settings. No additional programming or software is required.

Q: Is the SK35 suitable for beginners in electronics?

A: The SK35 is well-suited for intermediate to advanced hobbyists and electronics makers who are comfortable working with DC circuits and understand the basics of voltage and current regulation. Beginners should take care to follow safe wiring practices and always verify output settings with a multimeter before connecting sensitive loads.