Overview
The MH-KC24 is a specialized DC-DC step-down converter designed specifically for fast-charging mobile devices. It takes a wide range of input voltages (from 6V to 32V) and converts it into a high-speed USB output. The built-in intelligent chip automatically recognizes the fast-charging protocol of the connected device (Apple, Android, Samsung, etc.) and adjusts the voltage accordingly (from 3V to 12V) to maximize charging speed without damaging the battery.
Supported Fast Charge Protocols
Qualcomm: QC 2.0 / QC 3.0
Apple: 2.4A Fast Charge
Samsung: AFC (Adaptive Fast Charging)
Huawei: FCP (Fast Charger Protocol)
BC1.2: DCP (Dedicated Charging Port) protocol
Key Features
Automatic Negotiation: Intelligently adjusts output voltage between 3V and 12V based on your phone’s requirements.
High Efficiency: Up to 97% conversion efficiency, keeping the module cool even during 24W fast charging.
Wide Input Range: Perfect for cars (12V), trucks (24V), solar panels, or large Li-Po battery packs.
Complete Protection: Includes input over-voltage, under-voltage, output over-current, and short-circuit protection.
Compact Design: Small enough to be hidden behind a car dashboard or inside a small project box.
Technical Specifications
| Feature | Specification |
| Input Voltage | 6V – 32V DC |
| Output Voltage | Default 5V (Adjusts to 3V-12V for Fast Charge) |
| Output Power | Max 24W (5V/3.4A, 9V/2.5A, 12V/2A) |
| Efficiency | 90% – 97% |
| Switching Frequency | 220 KHz |
| Dimensions | 34mm x 17mm x 9mm |
Ideal Applications
DIY Solar Charger: Connect a 12V or 18V solar panel directly to charge your phone at full speed.
Car/Truck USB Upgrade: Replace slow factory USB ports with a true QC3.0 fast charger.
Field Charging Station: Use your 3S or 4S Li-Po drone batteries to charge your smartphone in the field.
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