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USB QC2.0/QC3.0 4-Channel DC-DC Buck Converter Module Fast Charging 6-32V to 5V/9V/12V/24V

$15.92 USD

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4-Channel USB QC3.0 / QC2.0 DC-DC Buck Converter Fast Charging Module — 6–32V Input

A high-efficiency 4-port USB fast charging module that converts a wide DC input voltage (6–32V) to regulated USB output with full Qualcomm Quick Charge 3.0 and 2.0 protocol support. Each USB-A port independently negotiates the optimal charging voltage (5V, 9V, or 12V) with the connected device, delivering up to 24W per port — charging modern smartphones 3–4× faster than standard 5V/1A chargers.

Designed for vehicle installations (12V/24V automotive), solar power systems, lithium battery packs, and any DC source from 6V to 32V. The 90–97% conversion efficiency minimizes heat generation even at full load across all four ports simultaneously.

Specifications

Input Voltage: DC 6V – 32V (12V and 24V automotive, solar, LiPo packs)
Output Voltage: Default 5V; auto-adjusts to 3V–12V during fast charge negotiation
Output Power: Up to 24W per port (5V/3.4A, 9V/2.5A, 12V/2A)
Number of Ports: 4 × USB-A
Conversion Efficiency: 90% – 97%
PCB Size: 90 × 45mm
Material: Metal + plastic housing
Color: Black
Operating Temperature: −40°C to +85°C

Supported Fast Charging Protocols

Qualcomm QC3.0: Adaptive voltage negotiation in 200mV steps (3.6V–12V), up to 18W per port. Compatible with all QC3.0 smartphones (Samsung Galaxy S7+, OnePlus, LG, HTC, etc.)
Qualcomm QC2.0: Fixed voltage steps (5V/9V/12V/20V), up to 18W. Compatible with QC2.0 devices and backward-compatible with QC3.0 chargers.
Huawei FCP (Fast Charge Protocol): 9V/2A = 18W for Huawei P/Mate series
Huawei SCP (Super Charge Protocol): High-current fast charging for Huawei SuperCharge devices
Samsung AFC (Adaptive Fast Charging): 9V/1.67A = 15W for Samsung Galaxy devices
MediaTek PE1.1 / PE2.0 (Pump Express): For MTK-based smartphones
Spreadtrum SFCP: For Spreadtrum/UNISOC chipset devices
BC1.2 (Battery Charging 1.2): Standard USB charging, 5V/1.5A
Apple 2.4A: High-current charging for iPhone and iPad (5V/2.4A)
Samsung 5V/2A: Standard Samsung charging profile
DCP (Dedicated Charging Port): Universal 5V charging for all USB devices

Output Voltage Cable Compensation

The module includes automatic cable voltage drop compensation — it slightly increases the output voltage to compensate for resistance losses in the USB cable, ensuring the device receives the correct voltage at the connector rather than at the module output. This improves charging efficiency and reduces heat in long cable runs.

Wiring

VIN+ → Positive DC input (6–32V)
VIN− → Negative DC input (GND)
USB-A ports face outward for device connection
Add an inline fuse (5A per port, 20A total) on the input wire for protection
For automotive installation, connect to a switched 12V/24V source (ignition-switched) to prevent battery drain

Heat Management

At 90–97% efficiency, heat generation is minimal under normal loads. However, when all 4 ports are simultaneously charging at maximum power (4 × 24W = 96W input), ensure adequate airflow around the module. Mount on a metal surface or add a small heatsink to the main buck converter IC if operating in enclosed spaces above 40°C ambient.