The Dual USB QC3.0 Fast Charging Buck Converter is a high-performance power transformation module designed to turn any high-voltage DC source into a modern fast-charging station. At Electrapac, we recommend this module for automotive, solar, and industrial projects where you need to charge modern smartphones at their maximum supported speeds.

Product Overview

This module is a "Smart" Step-Down (Buck) converter. Unlike standard 5V regulators, it features an integrated Fast Charge Recognition IC. It communicates with your device to negotiate the highest safe voltage (up to 12V) using Quick Charge 3.0/2.0 protocols. With a wide input range of 6V to 32V, it is perfectly suited for 12V cars, 24V trucks, or off-grid solar battery banks.

Key Features for Electrapac Customers

• Dual Independent Ports: Each USB port operates on its own dedicated chip. Charging a phone on Port 1 won't slow down the fast-charging speed of a tablet on Port 2.

• Intelligent Voltage Scaling: Using the QC3.0 standard, the module can adjust output in 200mV increments to find the most efficient charging curve for your device, reducing heat and battery wear.

• Synchronous Rectification: Advanced switching technology ensures that even at 24W, the module remains highly efficient, wasting very little energy as heat.

• Wide Input Compatibility: Works seamlessly with 12V and 24V vehicle systems. It can even handle the voltage spikes commonly found in automotive alternators.

• Solder-Ready Design: Large, clearly marked solder pads make it easy to integrate into custom dashboard panels, portable power boxes, or 3D-printed enclosures.

Installation & Wiring Guide

To build a high-speed Electrapac charging hub, follow these steps:

1. Input Power (IN+ / IN-): Connect your DC source (Battery or Power Supply).

   • Note: The input voltage must be at least 2V higher than the desired output voltage to achieve fast charging (>14\V input for 12V output).

2. Mounting: The module features mounting holes for secure installation inside a project box.

3. Heat Dissipation: Under heavy dual-port 24W loads, the board will get warm. Ensure there is adequate airflow or mount it against a non-conductive, heat-resistant surface.

4. Polarity Protection: While the module has protection, always double-check your IN+ and IN- connections to prevent damage to the high-speed ICs.

Primary Applications

• Car & Truck Upgrades: Adding modern QC3.0 charging ports to older vehicles or heavy machinery.

• Solar Charging Stations: Converting 12V or 24V solar battery bank power into stable USB-A fast charging.

• DIY Power Boxes: Building "Field Boxes" for camping or RC flying that can charge phones and tablets rapidly.

• E-Bike Accessory Power: Stepping down 24V e-bike batteries to power GPS units or smartphones.

• Industrial Control Panels: Providing a service USB port for technicians to charge mobile diagnostic tools.

Why Shop at Electrapac?

We source our Dual QC3.0 Modules with high-frequency, low-resistance capacitors to ensure the power delivery is "clean" and won't interfere with your phone's touch screen or radio signals. At www.electrapac.com, we provide the intelligent power modules that keep your modern devices charged and ready for action.