MH-KC24 QC3.0 2-Channel DC-DC Buck Converter

Overview

The two-channel MH-KC24 module adds two USB-A fast-charging ports to a 6-32 V DC source, such as a vehicle battery, a solar battery bank or a DC adapter.

Each port outputs 5 V by default and negotiates higher voltages with devices that support Qualcomm Quick Charge 2.0/3.0, Huawei FCP/SCP, Samsung AFC, Spreadtrum SFCP or MTK Pump Express. It is a compact choice for car-charger retrofits and DIY power boxes.

Key Features

• 6-32 V DC input, suitable for 12 V and 24 V systems
• 2 × USB-A outputs
• 5 V default output, higher voltages by fast-charge negotiation
• Supports the main phone fast-charge protocols

Typical Applications

• Car, motorcycle and truck USB charging points
• Solar and battery backup systems
• DIY power boxes and charging stations

Compatibility

Charges phones, tablets and other USB devices. Devices without a supported fast-charge protocol charge at the standard 5 V rate.

Important Notes / Safety

• Keep the input within 6-32 V DC and check the polarity before connecting.
• Fuse the supply wire in vehicle installations.
• Allow airflow around the board; it runs warm under heavy load.