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Small red circuit board with digital display and adjustment screw

KEHIPI

KEHIPI 180057 Buck Converter 4-32V 1.25-30V 3A Power Adapter

SKU CH-GNJB-9RABA

Adjustable buck module steps 4-32 V down to 1.25-30 V at 3 A peak with LED voltage, current and input readout

  • Product colorRed
  • Product dimensions60.0 in × 34.0 in × 13.0 in
  • Product weight24 g
  • Adjustable 1.25 V–30 V output from 4 V–32 V input
  • LED shows output volts, amps and input volts
  • Button switches output on or off with OFF display
  • Reverse polarity and short circuit protection included
  • Compact 6.0 × 3.4 × 1.3 cm board weighs 24 g

Adjustable Step-Down Converter

The KEHIPI 180057 buck converter accepts a DC input between 4.0V and 32.0V and produces an adjustable output from 1.25V to 30.0V. It is built around the LM2596 regulator and includes a three-digit LED display that cycles through input voltage, output voltage and output current. A screw terminal sets the output level while a front-panel button toggles the output on and off.

Three-Amp Peak Current Limit

The module delivers up to 3A peak current, but continuous operation is rated at 1.5A with total output power kept within 20W. Input reverse-polarity protection and short-circuit protection are integrated. The display shows voltage to ± (1% + 2 digits) and current to ± 2 digits.

Compact Board for Low-Power Loads

Measuring 6.0 x 3.4 x 1.3 cm and weighing 24 g, the red PCB suits breadboard or enclosure mounting. It comfortably powers microcontroller projects, LED strips or sensor arrays that stay below the 20W continuous envelope. Loads requiring sustained current above 1.5A or total power beyond 20W exceed its thermal design.

How it compares

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

Price $21.99
Typical for this category: the median of 3,875 items is $23.99.

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Specifications

Product
Brand nameDROK
Model name180057
Part number180057
Product colorRed
Size & build
Product dimensions60.0 in × 34.0 in × 13.0 in
Product weight24 g
In the box
In the boxNo

Questions about this item

What does the 3 A peak rating mean for continuous use?

The module can deliver up to 3 A for short bursts, but continuous operation is limited to 1.5 A as long as total output power stays within 20 W.

What input-to-output voltage drop does the buck topology impose?

Buck mode requires at least a 2 V difference between input and output, so the input must be 2 V higher than the desired output voltage.

How much board space does the 6.0 × 3.4 cm footprint need inside an enclosure?

The PCB measures 6.0 cm long by 3.4 cm wide with a 1.3 cm height, so allow that area plus clearance for wiring and the USB-style terminals.

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