5V-32V Input to 1.5V-35V Output XL6009 Boost Buck Step Up Step Down DC-DC Converter

📋 Overview This versatile boost-buck DC-DC converter module accepts any input voltage from 5V to 32V and converts it to any adjustable output from 1.5V to 35V — stepping voltage both up and down with a single module. Based on the XLSEMI XL6009 chip, it uses a two-stage conversion design (boost then buck) to deliver a regulated output regardless of whether your target voltage is higher or lower than your input. An onboard multi-turn potentiometer lets you dial in your exact target voltage with precision. ⚠️ Important: Do not exceed 32V input or 35V output. This module does not include short-circuit or reverse polarity protection — always install a fuse on the input side and double-check polarity before powering on. ⭐ Key Features Boost and Buck in One Module: Steps voltage both up and down — output can be higher or lower than the input Wide Input Range: Accepts 5V to 32V DC input Wide Adjustable Output: Output continuously adjustable from 1.5V to 35V via onboard multi-turn potentiometer High Efficiency: Up to 94% conversion efficiency with MOSFET switching High Switching Frequency: 400KHz for low output ripple and fast transient response 1.5A Max Output Current: Supports a wide range of loads Compact Design: Small 48 × 25 × 14 mm (1.89 × 0.98 × 0.55 in) PCB fits easily into tight enclosures Industrial Temperature Range: Operates from −40°C to +85°C 📊 Specifications Converter Type Non-isolated Step-Up & Step-Down (Boost & Buck) IC Chip XLSEMI XL6009 Input Voltage 5V – 32V DC Output Voltage 1.5V – 35V DC (adjustable) Output Current 1.5A max Output Power 20W (natural cooling) / 25W (with heatsink) Conversion Efficiency 80% – 94% (varies with Vin, Vout, and load) Switching Frequency 400KHz Short Circuit Protection None (use external fuse) Operating Temperature −40°C to +85°C Board Dimensions Approx. 48 × 25 × 14 mm (1.89 × 0.98 × 0.55 in) L × W × H 📌 Pinout Pad Function IN+ Positive input — connect to DC power source positive (+) IN− Negative input — connect to DC power source negative (−) / ground OUT+ Positive output — connect to load positive (+) OUT− Negative output — connect to load negative (−) / ground 🚀 Getting Started Connect your DC power source (5V–32V) to the IN+ and IN− pads. With the output disconnected, attach a multimeter to OUT+ and OUT− (DC voltage mode). Turn the onboard potentiometer to set your desired output voltage (clockwise = increase, counter-clockwise = decrease). Connect your load to OUT+ and OUT−, then verify the voltage under load and fine-tune if needed. 💡 Tip: See our complete User Guide for detailed wiring instructions, how the two-stage conversion works, troubleshooting tips, and best practices. 🔋 How It Works Unlike a simple boost or buck converter, this module uses a two-stage conversion process: Stage 1 — Boost: The input voltage is first stepped up to an internal voltage above 35V. Stage 2 — Buck: This high internal voltage is then stepped down to the output voltage you've set with the potentiometer. This two-stage approach allows the module to output a voltage that is either higher or lower than the input — something a single-stage converter cannot do. The trade-off is slightly lower efficiency compared to a dedicated single-stage converter. 🎯 Applications Regulating a stable output from variable input sources (batteries, solar panels, etc.) Powering 3.3V or 5V devices from higher-voltage battery packs Stepping up battery voltage for LED strips or LED drivers Adjustable bench power supply from a fixed DC source Solar panel voltage regulation where input varies with sunlight conditions Automotive projects where accessory voltage differs from the vehicle's supply DIY and hobby electronics projects requiring flexible voltage conversion ⚠️ Important Notes This module can step voltage both up and down, but efficiency is lower than a dedicated single-stage boost or buck converter (80%–94%). No short-circuit protection — always install an inline fuse on the input side. No reverse polarity protection — connecting input with reversed polarity will permanently damage the module. Maximum output current is 1.5A — lower than the boost-only XL6009 (2.5A). For loads exceeding 1A, add a heatsink to prevent thermal shutdown. Always set the output voltage before connecting your load to avoid damaging sensitive electronics. 📦 What's in the Box 1x XL6009 Adjustable Boost Buck Step-Up Step-Down DC-DC Converter Module 📄 Documentation & Resources XL6009 Boost Buck Converter User Guide All Boost Buck Converter User Guides & Tutorials