---
product_id: 162967153
title: "DROK Boost Buck Converter, DC 5.5-30V to 0.5-30V 5V 12V 24V Output Adjustable Power Supply Regulator Module, 4A 35W High Power Voltage Step Up Down Converter Board with Case LCD Display"
brand: "drok"
price: "€ 34.26"
currency: EUR
in_stock: true
url: https://www.desertcart.nl/products/162967153-drok-boost-buck-converter-dc-5-5-30v-to-0
store_origin: NL
region: Netherlands
---

# 5.5-30V input range 4A max current, 35W power 0.5-30V adjustable output DROK Boost Buck Converter, DC 5.5-30V to 0.5-30V 5V 12V 24V Output Adjustable Power Supply Regulator Module, 4A 35W High Power Voltage Step Up Down Converter Board with Case LCD Display

**Brand:** drok
**Price:** € 34.26
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your projects with precision and confidence — never settle for less!

## Quick Answers

- **What is this?** DROK Boost Buck Converter, DC 5.5-30V to 0.5-30V 5V 12V 24V Output Adjustable Power Supply Regulator Module, 4A 35W High Power Voltage Step Up Down Converter Board with Case LCD Display by drok
- **How much does it cost?** € 34.26 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/162967153-drok-boost-buck-converter-dc-5-5-30v-to-0)

## Best For

- drok enthusiasts

## Why This Product

- Trusted drok brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dynamic LCD Display:** Stay informed with real-time voltage, current, power, and temperature readouts at a glance.
- • **Precision Voltage Control:** Seamlessly dial your output from 0.5V to 30V for ultimate customization.
- • **Robust 4A Current Capacity:** Power through demanding projects with a reliable 4A continuous current output.
- • **Versatile Application Ready:** Perfect for LED drivers, DIY electronics, and professional power regulation with easy-to-use potentiometers and control buttons.
- • **Comprehensive Protection Suite:** Built-in safeguards including over-current, short-circuit, reverse polarity, and thermal protection keep your devices safe.

## Overview

The DROK Boost Buck Converter is a high-performance voltage regulator module supporting input voltages from 5.5V to 30V and adjustable output from 0.5V to 30V. It delivers up to 4A current and 35W power, featuring a clear LCD display for real-time monitoring and multiple built-in protections. Encased in a protective shell, it’s ideal for professionals and makers seeking reliable, customizable power solutions.

## Description

Full description not available

## Features

- PARAMETER --- Buck boost converter. input voltage range 5.5-30V; output voltage range 0.5-30V; working current 4A; power 35W. CV potentiometer: voltage setting potentiometer. The CC potentiometer sets only the current limit (max output current) not actual current. Actual current depends on the load.
- APPLICATION --- as a normal boost buck converter module with over-current protection; as a high-power LED constant current driver module, etc.
- PROTECTION --- soft start; input reverse connection protection; output anti-backflow protection; short-circuit protection; over-current protection(6A); over-power protection; over-temperature protection.
- DISPLAY --- clear LCD screen displays input voltage, output voltage, temperature, output current & output power (switched by button).
- OTHER FEATURES --- with protective case (needs to be manually assembled); with LC filter; with buttons to switch displayed parameter & set output ON/OFF; with CC(constant current) & CV(voltage setting) potentiometer; Rotate clockwise to increase set current value and counterclockwise to decrease. When the load current reaches the set current value, it will enter constant current status, and the red CC indicator light will be on.When there is voltage outputs, the green ON indicator will be on.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Weight | 3.98 Ounces |
| Output Voltage | 30 Volts (DC) |
| Input Voltage | 5.5 Volts (DC) |
| Color | blue-2 |

## Product Details

- **Brand:** DROK
- **Color:** blue-2
- **Item Weight:** 3.98 Ounces
- **Input Voltage:** 5.5 Volts (DC)
- **Output Voltage:** 30 Volts (DC)

## Images

![DROK Boost Buck Converter, DC 5.5-30V to 0.5-30V 5V 12V 24V Output Adjustable Power Supply Regulator Module, 4A 35W High Power Voltage Step Up Down Converter Board with Case LCD Display - Image 1](https://m.media-amazon.com/images/I/613lo7nJBuL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: How would i use this as a constant voltage supply if i don’t want a constant current supply (eg, i don’t want to accidentally spike the output v) ?**
A: For me this has been a marvelously useful device.   I power it with the charger "brick" from a retired laptop PC, capable of as much as a couple amps at 25VDC.    The specifications don't make it clear, but you independently set the maximum output current and output voltage using the on-board 10-turn pots while monitoring it on the display.   For example when charging a lithium-ion battery, its specs might suggest a the maximum charging current of 0.5A and maximum output voltage of 4.2V.   So first, you set the open-circuit voltage to 4.2V.   Turn the output current to minimum and connect the batery.   Assuming the battery is pretty well discharged, when you first connect it you could potentially sink as much as several amps but that would hurt the battery.   No problem, you've set the current to minimum (a few mA).  When you connect the battery, turn up the current to 0.5A; the voltage will rise as you turn up the current, probably settling around 3.5V.   (I am assuming that your power source will easily supply the required power.)  As the battery charges, the voltage will gradually increase to 4.2V while the current stays at 0.5A.   But once the voltage gets close to 4.2V the current will start to taper off.   If left for several hours the voltage will still be at 4.2V but the current will be only a few mA.   So the supply acts like constant current, then transitions to constant voltage.    I hope this answers your question.   I  haven't seen any evidence of loss of control over either output voltage or current.   FYI it's worthwhile to experiment with the unit connected to an output load resistor first, to get an understanding of which buttons to press to read the desired values.   From memory, you can read input voltage and current, temperature of the heat sink in F or C, and output voltage and current.   And you can also read output voltage independent of supplying power to the load (i.e. it can act like a voltmeter).

**Q: What does opp error mean?**
A: Dear customer,
OPP:Over-power Protection
When output power reaches 35W, OPP will be enable.
Best regards.

**Q: Is there an operating/owners manual**
A: Good day.
You can get the user manual on product detailed page ---> Product information ---> Technical Specification ---> User Manual [pdf ]
You can also get it via the link below:
https://images-na.ssl-images-amazon.com/images/I/C1RCvx6bFMS.pdf
If there are any problems, please feel free to contact through Amazon's direct messaging service:
https://www.amazon.com/ss/help/contact/?_encoding=UTF8&marketplaceID=ATVPDKIKX0DER&ref_=v_sp_contact_seller&sellerID=AFHAE9RJVUMB
Best regards.

**Q: I need to increase voltage from 11V to 15V, can it do it?**
A: Yes this will work.  This morning I needed to run 2 12V PC fans from a USB 2.0 port.  It worked drawing around 400mA.

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-19*