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DROK Buck Converter 12v to 5v, 5A USB Voltage Regulator DC 9V-36V Step Down to DC 5V-5.3V 5.2V 3.5-6A Volt Transformer Power Supply Module for Phone Fast Charging

4.5 out of 5 stars 719 ratings
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Purchase options and add-ons

Brand DROK
Color Black Pro
Connectivity Technology USB
Compatible Devices Power Tools
Item Weight 22 Grams

About this item

  • DROK buck converter input voltage is DC 9v-36v, output voltage is 5.2V (5V-5.3V available according to your input voltage).
  • The step down regulator adopts synchronous rectification scheme to provide wide voltage range, large current and high efficiency.
  • Our buck voltage regulator is user-friendly, accompany with DC interface and connecting terminals, make it easier to be connected to different devices.
  • The voltage reducer is with USB interface and quick charge identifying chip, and is compatible with Android and Apple.
  • Note: Input different voltage will output different power: input DC 9-24V, output 5.2V/6A/30W; input DC 24-32V, output 5.2V/5A/25W; input DC 32-36V, output 5.2V/3.5A/18W.

Frequently bought together

This item: DROK Buck Converter 12v to 5v, 5A USB Voltage Regulator DC 9V-36V Step Down to DC 5V-5.3V 5.2V 3.5-6A Volt Transformer Power Supply Module for Phone Fast Charging
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Product Description

Integrity, Quality, Innovation, Customer----DROK

DROK has been engaged in technical research, development, manufacture and sale of all kinds of buck converters for many years.

With acquisition of leading technology, we strictly enforce quality management system and improve operational management, dedicate to produce high performance voltage step down transformers for our valued customers.

Wiring connection
Charge your phone

Buck Converter detail

Reverse Connection Protection Diode

Much safer to use the converter module with the protection.

Buck Converter detail

DC Plug

There are connection terminals and a DC plug, which is very easy to use the voltage converter.

Different Input Different Output

Different Input for Different Output

Input DC 9-24V, output 5.2V/6A/30W;

Input DC 24-32V, output 5.2V/5A/25W;

Input DC 32-36V, output 5.2V/3.5A/18W.

USB Output

USB Output DC 5.0V/5A

With a USB port and fast charging identification chip which is compatible with Android and iPhone.

This Item
Buck Converter
Buck Converter
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Customer Reviews
4.5 out of 5 stars 719
4.3 out of 5 stars 2,083
4.1 out of 5 stars 102
4.3 out of 5 stars 1,640
4.5 out of 5 stars 719
4.3 out of 5 stars 2,083
Price $9.99 $14.99 no data $16.99 $12.99 $16.99
Input Voltage DC 9-36V DC 6-32V DC 5-23V DC 6.5-36V DC 6-32V DC 6-30V
Output Voltage 5-5.3V DC 1.5-32V DC 0.01-18V DC 1.2-32V DC 3-12V DC 7-32V
Max Current 3.5A/5A/6A 5A 3A 4.5A 5V/3.4A; 9V/2.5A; 12V/2A, etc. 5A
CC/CV mode no data no data no data
Display no data LCD LCD LCD no data LCD
Case no data no data
USB Output no data no data no data

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DROK Buck Converter 12v to 5v, 5A USB Voltage Regulator DC 9V-36V Step Down to DC 5V-5.3V 5.2V 3.5-6A Volt Transformer Power Supply Module for Phone Fast Charging
DROK Buck Converter 12v to 5v, 5A USB Voltage Regulator DC 9V-36V Step Down to DC 5V-5.3V 5.2V 3.5-6A Volt Transformer Power Supply Module for Phone Fast Charging
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Price$9.99$8.99$26.99$14.99-17% $17.49
List:$20.99
$12.89
Delivery
Get it as soon as Thursday, Apr 17
Get it as soon as Thursday, Apr 17
Get it as soon as Thursday, Apr 17
Get it as soon as Thursday, Apr 17
Get it as soon as Thursday, Apr 17
Get it as soon as Thursday, Apr 17
Customer Ratings
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power source
current rating
mounting type
model number

Product information

Customer Package Type Standard Packaging
Unit Count 1.0 Count
Style Black/1pcs
Manufacturer DROK
Package Dimensions 3.78 x 2.28 x 0.98 inches
Item Weight 0.776 ounces
ASIN B01NALDSJ0
Item model number 200217
Customer Reviews
4.5 out of 5 stars 719 ratings

4.5 out of 5 stars
Best Sellers Rank #49,656 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
#172 in Power Converters
Is Discontinued By Manufacturer No
Date First Available December 21, 2016
Country of Origin China

Warranty & Support

Product Warranty: For warranty information about this product, please click here

Feedback

DROK Buck Converter 12v to 5v, 5A USB Voltage Regulator DC 9V-36V Step Down to DC 5V-5.3V 5.2V 3.5-6A Volt Transformer Power Supply Module for Phone Fast Charging


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Customer reviews

4.5 out of 5 stars
719 global ratings

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Customers say

Customers find the buck converter works well, delivering steady high power and being constructed solidly. The device is easy to solder and connect, and customers appreciate its fast-charging capabilities. The power source aspect receives mixed feedback - while some say it's perfect for Raspberry Pi, others report no power at all. The heat level also gets mixed reviews, with some noting it doesn't get too hot while others mention it can get warm.

AI-generated from the text of customer reviews

91 customers mention "Works well"86 positive5 negative

Customers find that the transformer works well, particularly for Raspberry Pi applications and as a charger.

"...Works perfectly. I bought 4 as a set. Now, I have 2 left over." Read more

"...Works like a charm. I really didn't want more than a single power cord to my pedalboard, and this converter makes that possible...." Read more

"These buck converters work well and are very versatile." Read more

"...Overall, I love it. It's tiny, efficient, and works well with my Raspberry pi's in waterproof boxes, powered by 12V LiFePo's." Read more

47 customers mention "Power output"36 positive11 negative

Customers praise the transformer's power output, noting its steady high performance and rock-solid voltage delivery. One customer mentions it can provide up to 3A of power.

"...this little converter that will take various voltages and convert them to the needed 5V, so I purchased one, hoping for the best...." Read more

"...Overall, I love it. It's tiny, efficient, and works well with my Raspberry pi's in waterproof boxes, powered by 12V LiFePo's." Read more

"Amperage is ok, running small wireless cameras from this 5V output, from a 12V 8AH battery. Lasts for days...." Read more

"...I am very impressed by it. It definitely needs a good power supply. For sure. as you see in one of my photos. only time will tell." Read more

38 customers mention "Build quality"33 positive5 negative

Customers praise the build quality of the buck converter, noting its solid construction and high-quality components, with one customer specifically mentioning its well-designed circuitry.

"...recommend to anyone needing USB-level power from other DC voltages in a neat, convenient package." Read more

"...that already had a 12v power supply and this has been rock solid for years...." Read more

"...Lasts for days. Much better conversion rate than a 7805. Not even comparable. So far this unit has performed...." Read more

"This module seems to be well designed and they squeezed in two sizable filter capacitors, one for the applied power source and a second for the USB..." Read more

18 customers mention "Ease of installation"18 positive0 negative

Customers find the transformer easy to install and solder, with quick installation time, and one customer mentions it simplifies the wire run.

"...That worked and install time was very quick with this method...." Read more

"I really like how easy this is! I needed to lower my solar power voltage from 12v to 5v for the raspberry pi and this does an amazing job!..." Read more

"...Easy, found that it fits inside a prescription pill container. I used the barrel connector for the input voltage." Read more

"...To simplify the wire run, I got a 3A 12v supply, and split it off at the spotlight to power the USB camera...." Read more

15 customers mention "Fast charging"15 positive0 negative

Customers appreciate the transformer's fast charging capabilities, with one customer noting it performs better than a 7805 converter.

"...Lasts for days. Much better conversion rate than a 7805. Not even comparable. So far this unit has performed...." Read more

"...a QC3 device (I only seem to have one unfortunately) the charging voltage is increased...." Read more

"Quick Charge works as expected (12V input and 9V@1.5A output using my cellphone)" Read more

"...Very quickly. It could definitely charge my earpiece very quickly. I am very impressed by it. It definitely needs a good power supply. For sure...." Read more

13 customers mention "Voltage converter"13 positive0 negative

Customers praise the voltage converter's performance, with one mentioning its critical components and another highlighting its 12v to 5v functionality.

"...These are critical components of a DC-DC converter, to prevent output overshoot at startup and maintain better regulation through load current..." Read more

"...Seriously folk. It’s a DC to DC converter! How are you supposed to review THAT? It works, the price is cool. Not a bother. Want a moan?..." Read more

"...fans in the size I needed were out of stock so this buck converter came in real handy, plus it was less expensive than the fan would’ve been...." Read more

"Very cool converter to run USB devices hardwired...." Read more

32 customers mention "Power source"22 positive10 negative

Customers have mixed experiences with the power source: some find it perfect for Raspberry Pi, while others report receiving no power at all.

"Nice little efficient step-down module! It draws about 2ma in idle, so you can't ever just leave it connected to a battery when not in use...." Read more

"...Also the ideal solution for powering a Pi from an automotive DC source." Read more

"...of 12v-5v buck convertors to power a Raspberry Pi, but they provide inadequate power...." Read more

"...It is flawlessly powering a traffic camera in my car while wired to a 12 volt circuit in the windshield mirror so that no wires hang down towards..." Read more

13 customers mention "Heat level"6 positive7 negative

Customers have mixed opinions about the transformer's heat level, with some noting it runs cool while others mention it can get a little warm.

"...It also only ever got slightly warm, never hot. It does however lack holes to screw it to anything...." Read more

"...I wanted to see how warm they would get. The converter module does get warm, but not too hot to handle...unlike another similar product that got..." Read more

"...Unit can get a little warm but not hot to the touch, even under a constant 2A load. I have not tested higher amperage than that." Read more

"...These things get Really Hot when you are pushing them up there. I mean, so Hot you wouldn't be able to keep your finger on the chip!..." Read more

It Works GREAT With a Battery Made of 2, 3.65v LiFEPO4 Prismatic Cells
5 out of 5 stars
It Works GREAT With a Battery Made of 2, 3.65v LiFEPO4 Prismatic Cells
Almost 1 & 1/2 years ago, I ordered a 10 pack of 3.2v, 50ah, Prismatic Lifepo4 cells from an online vendor. With 8 of those cells I built a 100 amp hour LiFEPO4 battery. But I had 2, 3.2v, 50ah cells remaining that I did not know what to do with. I started wondering if there was a USB module that would accept an input of a minimum of 6 volts to which I could connect the battery to charge and power USB devices. Then I discovered the DROK USB DC-DC Step Down Buck Converter capable of taking 6 volts minimum and converting it to a 5V QC 3.0 Charging Module. I read the reviews, good and bad...bad to see what people were complaining about, and decided to buy a set of 4. I figured that the converter module should work as a USB charging device when connected to the 2 remaining LiFEPO4 cells if the cells are wired in series to produce the required 6+ volts. (See the first picture of the 2 LiFEPO4 cells connected in series with one of the 2 connections coming from the converter module connected.) The second photo shows both wires connected, and the blue illuminated LED on the converter module. You can see "78% 10 m until full" on the screen of my phone. The third photo shows the charging symbol on the screen. It shows 79%. Sorry for the fuzziness of that picture. I used a few of the converter modules to charge my phone and tablet for quite a while over the last few days. I wanted to see how warm they would get. The converter module does get warm, but not too hot to handle...unlike another similar product that got far too hot to be safe. And that was only at about 1 amp of current output. I'll be submitting a brutally honest review on that one soon. I foresee finding an appropriate container in which I will cut holes for the 4 converter modules and the the 50 amp hour battery and use the power source for a portable mega-USB charging station. I'll upload pictures when I get around to making it. I am very happy that my idea panned out!
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Top reviews from the United States

  • Reviewed in the United States on April 3, 2025
    Style: Black Mini/4pcsVerified Purchase
    I’m into electronics and need a 5v supply to mod a Bose Wave Radio. The minus supply and output rails are common and is exactly what I needed for my project. I removed the usb connector and soldered the wires to the usb output in order to miniaturize the board. Works perfectly. I bought 4 as a set. Now, I have 2 left over.
  • Reviewed in the United States on August 10, 2020
    Style: Black/1pcsVerified Purchase
    I am a working musician and was putting together an effects pedalboard, when I noticed my wireless unit (Line 6 G10) actually runs off 5VDC through a USB cord instead of the more typical 9VDC barrel plug. After a brief search I discovered this little converter that will take various voltages and convert them to the needed 5V, so I purchased one, hoping for the best.

    I wired it into my pedalboard power supply, fired it up, and tested the voltage as a precaution - 5VDC and some change - exactly as described. I tested it with the wireless unit and it worked perfectly.

    The *only* drawback I can see to this product is that there is really no easy way to mount it - I didn't see any sort of project box sized for it. I modified an empty Altoids tin, Velcroing this adapter in place inside with plastic surrounding it to prevent contact between the board and the tin. I then Velcroed the tin to the bottom frame of my pedalboard.

    Works like a charm.

    I really didn't want more than a single power cord to my pedalboard, and this converter makes that possible. Highly recommend to anyone needing USB-level power from other DC voltages in a neat, convenient package.
    10 people found this helpful
    Report
  • Reviewed in the United States on February 24, 2025
    Style: Blue/2pcsVerified Purchase
    These buck converters work well and are very versatile.
  • Reviewed in the United States on September 2, 2020
    Style: Black Mini/4pcsVerified Purchase
    Nice little efficient step-down module! It draws about 2ma in idle, so you can't ever just leave it connected to a battery when not in use. Add a switch. It might draw less if you smash the tiny blue LED to bits :p

    The solder terminals are also a wee bit small, maybe 22AWG or smaller wire only. I carefully tack-soldered 18AWG, which was way overkill obviously, but it's what I had to use to get a prototype in the field that day. You can do it if you are good with the iron.

    There are no mounting holes, so if you need to mount this, you have to use foam tape or some rubber band solution, lol. I want to shrink wrap mine, but then I can't see the tiny blue LED anymore :( Just remember, stock, you need to be careful not to short the input wires when handling it with the power on.

    Overall, I love it. It's tiny, efficient, and works well with my Raspberry pi's in waterproof boxes, powered by 12V LiFePo's.
    6 people found this helpful
    Report
  • Reviewed in the United States on November 4, 2024
    Style: Black/1pcsVerified Purchase
    Needed to power a Raspberry Pi 4 and 5 in some project enclosures that already had a 12v power supply and this has been rock solid for years. The Pi 5 is very "hungry" for power (5 amps) and if you power from a common 12v/24v power supply you will get 5+ amps from this converter without an issue. Also the ideal solution for powering a Pi from an automotive DC source.
    3 people found this helpful
    Report
  • Reviewed in the United States on August 12, 2022
    Style: Black Mini/4pcsVerified Purchase
    Almost 1 & 1/2 years ago, I ordered a 10 pack of 3.2v, 50ah, Prismatic Lifepo4 cells from an online vendor. With 8 of those cells I built a 100 amp hour LiFEPO4 battery. But I had 2, 3.2v, 50ah cells remaining that I did not know what to do with.

    I started wondering if there was a USB module that would accept an input of a minimum of 6 volts to which I could connect the battery to charge and power USB devices. Then I discovered the DROK USB DC-DC Step Down Buck Converter capable of taking 6 volts minimum and converting it to a 5V QC 3.0 Charging Module. I read the reviews, good and bad...bad to see what people were complaining about, and decided to buy a set of 4.

    I figured that the converter module should work as a USB charging device when connected to the 2 remaining LiFEPO4 cells if the cells are wired in series to produce the required 6+ volts. (See the first picture of the 2 LiFEPO4 cells connected in series with one of the 2 connections coming from the converter module connected.)

    The second photo shows both wires connected, and the blue illuminated LED on the converter module. You can see "78% 10 m until full" on the screen of my phone. The third photo shows the charging symbol on the screen. It shows 79%. Sorry for the fuzziness of that picture.

    I used a few of the converter modules to charge my phone and tablet for quite a while over the last few days. I wanted to see how warm they would get. The converter module does get warm, but not too hot to handle...unlike another similar product that got far too hot to be safe. And that was only at about 1 amp of current output. I'll be submitting a brutally honest review on that one soon.

    I foresee finding an appropriate container in which I will cut holes for the 4 converter modules and the the 50 amp hour battery and use the power source for a portable mega-USB charging station. I'll upload pictures when I get around to making it.

    I am very happy that my idea panned out!
    Customer image
    5.0 out of 5 stars
    It Works GREAT With a Battery Made of 2, 3.65v LiFEPO4 Prismatic Cells

    Reviewed in the United States on August 12, 2022
    Almost 1 & 1/2 years ago, I ordered a 10 pack of 3.2v, 50ah, Prismatic Lifepo4 cells from an online vendor. With 8 of those cells I built a 100 amp hour LiFEPO4 battery. But I had 2, 3.2v, 50ah cells remaining that I did not know what to do with.

    I started wondering if there was a USB module that would accept an input of a minimum of 6 volts to which I could connect the battery to charge and power USB devices. Then I discovered the DROK USB DC-DC Step Down Buck Converter capable of taking 6 volts minimum and converting it to a 5V QC 3.0 Charging Module. I read the reviews, good and bad...bad to see what people were complaining about, and decided to buy a set of 4.

    I figured that the converter module should work as a USB charging device when connected to the 2 remaining LiFEPO4 cells if the cells are wired in series to produce the required 6+ volts. (See the first picture of the 2 LiFEPO4 cells connected in series with one of the 2 connections coming from the converter module connected.)

    The second photo shows both wires connected, and the blue illuminated LED on the converter module. You can see "78% 10 m until full" on the screen of my phone. The third photo shows the charging symbol on the screen. It shows 79%. Sorry for the fuzziness of that picture.

    I used a few of the converter modules to charge my phone and tablet for quite a while over the last few days. I wanted to see how warm they would get. The converter module does get warm, but not too hot to handle...unlike another similar product that got far too hot to be safe. And that was only at about 1 amp of current output. I'll be submitting a brutally honest review on that one soon.

    I foresee finding an appropriate container in which I will cut holes for the 4 converter modules and the the 50 amp hour battery and use the power source for a portable mega-USB charging station. I'll upload pictures when I get around to making it.

    I am very happy that my idea panned out!
    Images in this review
    Customer imageCustomer imageCustomer image
    8 people found this helpful
    Report
  • Reviewed in the United States on March 2, 2023
    Style: Black/1pcsVerified Purchase
    Amperage is ok, running small wireless cameras from this 5V output, from a 12V 8AH battery. Lasts for days. Much better conversion rate than a 7805. Not even comparable.
    So far this unit has performed. Had a bad camera that made it look as though the buck converter was failing. It was not. It was the esp32-cam card, it eventually fried.
  • Reviewed in the United States on January 30, 2025
    Style: Black Mini/4pcsVerified Purchase
    No ability to say input wasn't enough for QC3.... Fed the part 32V at 5amps max on my supply...
    Max voltage it can receive. Same results at 24V....
    It's a 5V regulator, that's all. It is no longer a QC3 device with high ratings.
    Part has changed to a cheaper part.
    SCAM SCAM SCAM. I could get the same for half the cost. Lasered part numbers so you cannot proof the design... Straight up 5 Volt 1.2 Amp 10 year old Junk being sold as QC 3.0. Swapped device to ride a different device... 10 of 11 images show a different part! Now add mine!
    Customer image
    1.0 out of 5 stars
    Not what it used to be. 5V 1.2A maximum!!!

    Reviewed in the United States on January 30, 2025
    No ability to say input wasn't enough for QC3.... Fed the part 32V at 5amps max on my supply...
    Max voltage it can receive. Same results at 24V....
    It's a 5V regulator, that's all. It is no longer a QC3 device with high ratings.
    Part has changed to a cheaper part.
    SCAM SCAM SCAM. I could get the same for half the cost. Lasered part numbers so you cannot proof the design... Straight up 5 Volt 1.2 Amp 10 year old Junk being sold as QC 3.0. Swapped device to ride a different device... 10 of 11 images show a different part! Now add mine!
    Images in this review
    Customer imageCustomer imageCustomer imageCustomer image
    One person found this helpful
    Report

Top reviews from other countries

Translate all reviews to English
  • Alberta-Ham
    5.0 out of 5 stars Awsome QC 3.0 board for projects.
    Reviewed in Canada on December 14, 2023
    Style: Black Mini/4pcsVerified Purchase
    I removed the USB connector as I wanted to direct-wire a USB cable to the board. I would be nice to have a solder-pad output option rather than only the USB port.
  • Wes M.
    5.0 out of 5 stars Work great!
    Reviewed in Canada on November 5, 2021
    Style: Black Mini/4pcsVerified Purchase
    Product looks as sold. Each unit has performed well. Recommend!
  • Luc
    5.0 out of 5 stars Bon achat
    Reviewed in Canada on February 21, 2021
    Style: Black Mini/4pcsVerified Purchase
    Fonctionne tel qu'espéré.
    Report
  • Jinyi Leang
    5.0 out of 5 stars good item
    Reviewed in Canada on July 15, 2020
    Style: Black Mini/4pcsVerified Purchase
    Excellent product
  • Amazon Customer
    2.0 out of 5 stars Does the bare minimum
    Reviewed in Canada on December 10, 2022
    Style: Black Mini/4pcsVerified Purchase
    Will fast charge when initially plugged in, but overheats and drops to 3 watt charging in about 30 seconds...

    Tested multiple boards from the pack on multiple devices (phone, gps, etc)