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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

  • Supply voltage12 V
  • Rated power24 W
  • Product typeStep-Up Voltage Regulator
  • Key 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.

How it compares

Measured against everything we stock in AC Adapters & Power Bricks, at today’s prices. Recalculated every night.

Price $3.99
Cheaper than about 98% of the 3,875 comparable items (median $23.99).

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Specifications

Product
Brand nameJacobsParts
Product typeStep-Up Voltage Regulator
Power
Supply voltage12 V
Rated power24 W

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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