QC3.0 / QC2.0 USB DC-DC Buck Converter Module — Fast Step-Down Charger, 6–32V to 3V / 5V / 12V

QC3.0 / QC2.0 USB DC-DC Buck Converter Module Fast Step-Down Charger, 6–32V to 3V / 5V / 12V

$6.20 USD

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QC3.0 / QC2.0 USB DC-DC Buck Converter Module — Fast Step-Down Charger, 6–32V Input

This QC3.0 / QC2.0 USB DC-DC buck converter module steps down a 6–32V DC input to a USB output supporting Qualcomm Quick Charge 3.0 and 2.0 protocols — delivering 5V, 9V, or 12V at up to 18W to compatible devices. It enables fast charging from 12V car batteries, 24V truck systems, solar battery banks, and industrial DC supplies. The USB-A output negotiates the optimal charging voltage with QC-compatible smartphones and tablets automatically.

Key Specifications

Parameter	Value
Input Voltage	6V – 32V DC
Output Voltage	3.6–6.5V (5V), 6.5–9V (9V), 9–12V (12V)
Max Output Power	18W (QC3.0)
Charging Protocol	QC3.0, QC2.0
Output Connector	USB-A
Topology	Step-down (buck)
Efficiency	Up to 93%
Operating Temperature	-40°C to +85°C

QC3.0 vs QC2.0 vs Standard 5V USB

Feature	QC3.0 (This Module)	QC2.0	Standard USB
Max Power	18W	18W	5W (5V/1A)
Voltage Steps	200mV increments	5V/9V/12V fixed	5V only
Charge Speed	Up to 4× faster	Up to 3× faster	Standard
Device Compatibility	QC3.0 + QC2.0 + 5V	QC2.0 + 5V	5V only

Why Choose This QC3.0 Buck Module?

✅ 6–32V wide input — covers 12V car, 24V truck, and solar battery systems
✅ QC3.0 + QC2.0 protocol — fast charges Qualcomm-compatible smartphones up to 4× faster
✅ 18W output — significantly faster than standard 5W USB chargers
✅ Up to 93% efficiency — minimal heat generation
✅ -40°C to +85°C — reliable in automotive and outdoor environments