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Small green circuit board with USB-A port and screw terminals

JacobsParts Inc.

JacobsParts Inc. 24W USB QC 3.0 Step-Down Buck Module 12-24V DC Input

SKU CH-V258-SBWSX

Converts 9–32 V DC sources into a USB fast charger delivering 5 V 3.4 A, 9 V 2.5 A or 12 V 2 A with 90–97 % efficiency and multiple protection features

  • TypeStep-Up Voltage Regulator
  • Input Voltage12 V
  • Power Rating24 W
  • FeaturesDC to DC
  • Turn any 9-32V DC source into USB fast charging
  • Delivers 5V 3.4A, 9V 2.5A, 12V 2A for rapid device power
  • Achieves 90-97% conversion efficiency across input range
  • Supports QC 2.0/3.0, BC 1.2, MTK PE1.1/PE2.0, AFC, SFCP protocols
  • Compact 34x17x9.5mm module with full protection suite

Compact 9-32 V DC to USB fast-charge module

This step-down buck converter accepts any DC source between 9 and 32 volts and delivers USB fast charging at 5 V 3.4 A, 9 V 2.5 A or 12 V 2 A. It supports QC 2.0, QC 3.0, BC 1.2, MTK PE 1.1, PE 2.0, AFC and SFCP protocols. Conversion efficiency ranges from 90 to 97 percent depending on the input-to-output voltage gap. The board measures 34 by 17 by 9.5 mm and includes overvoltage, undervoltage, overcurrent, short-circuit and thermal protection.

For vehicle and battery-powered USB charging

Installers adding USB fast-charge ports to 12 V or 24 V vehicle systems, solar setups or portable battery packs will find the wide input range and multiple protocol support a direct fit. The tiny footprint suits tight enclosures and panel-mount projects. Builders needing AC mains input, isolated output or programmable voltage steps should look at alternative power-supply types because this module only performs non-isolated DC-to-DC conversion.

9-32 V input range decides compatibility

The single specification that determines whether this part works is the 9 to 32 volt DC input window. Your power source must stay inside this range under all load and temperature conditions. If the supply can dip below 9 volts or rise above 32 volts the module will not operate correctly and its protection circuits may shut it down.

Highlights

  • Turn any 9-32V DC source into USB fast charging
  • Delivers 5V 3.4A, 9V 2.5A, 12V 2A for rapid device power
  • Achieves 90-97% conversion efficiency across input range
  • Supports QC 2.0/3.0, BC 1.2, MTK PE1.1/PE2.0, AFC, SFCP protocols
  • Compact 34x17x9.5mm module with full protection suite

Specifications

BrandJacobsParts
TypeStep-Up Voltage Regulator
Input Voltage12 V
Power Rating24 W
FeaturesDC to DC

Questions about this item

What DC power source voltage range is required to run this 24 W buck module?

The module accepts any 9 V to 32 V DC supply, so a 12 V or 24 V battery, vehicle system or regulated adapter will work.

Will the module negotiate fast charge with a phone that only supports QC 2.0?

Yes — it supports QC 2.0, QC 3.0, AFC, MTK PE 1.1/PE 2.0, SFCP and BC 1.2, so older Quick Charge handsets will still fast charge at 9 V 2.5 A.

How can I confirm the converter is delivering the correct voltage after wiring it up?

Measure the USB output with a multimeter; you should see 5 V, 9 V or 12 V depending on the device negotiation, and the built‑in protections will shut the output down if limits are exceeded.

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