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  • VIDEO
DROK 090010 Buck ConverterDROK
  • DROK® Waterproof DC-DC Buck Voltage Converter 8-22V to 1-15V Step Down Volt Regulator 12V to 5V 3A Output Adjustable Power Supply Transformer Module for Solar Panel Electric Fan Car Vehicle Auto
  • To view this video, download

DROK® Waterproof DC-DC Buck Voltage Converter 8-22V to 1-15V Step Down Volt Regulator 12V to 5V 3A Output Adjustable Power Supply Transformer Module for Solar Panel Electric Fan Car Vehicle Auto

4.1 out of 5 stars 824 ratings
鶹's Choice highlights highly rated, well-priced products available to ship immediately.
鶹's Choice
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Purchase options and add-ons

Brand DROK
Power source Dc Powered
Product Dimensions 25D x 33W x 20H millimeters
Mounting type Mounted
Current rating 3 Amps
Minimum frequency 50 Hz
Specification met CE, UL, RoHS
Item weight 0.01 Ounces
UPC 619397027004
Global Trade Identification Number 00619397027004

About this item

  • Uses synchronous rectification technology, has high conversion efficiency and stable performance; The input should be at least 3V higher than output.
  • With potentiometer on the bottom, which allows you adjust the accuracy with the mini screw, but ensures you won't easily change its setting when mounted.
  • Fully sealed, outer enclosure acts as a heat sink, specially made to be waterproof, anti-shock, anti-humidity and dust-proof, more durable.
  • With reversed-connection protection, over-current protection, over-heating protection and over-voltage protection, hence is safe to use.
  • Perfect for electronic hobby project, wide application, you can use it on radio, Car Audio, LED display, motor, cell phone, etc.
› See more product details

Product details

  • Is discontinued by manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 3.3 x 2.5 x 2 cm; 0.28 g
  • Date First Available ‏ : ‎ May 23 2013
  • Manufacturer ‏ : ‎ DROK
  • Place of Business ‏ : ‎ Guangzhou, Guangdong 510420,CN
  • ASIN ‏ : ‎ B00C0KL1OM
  • Item model number ‏ : ‎ 090010
  • 鶹 Rank: #9,593 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
  • Customer Reviews:
    4.1 out of 5 stars 824 ratings

Frequently bought together

DROK® Waterproof DC-DC Buck Voltage Converter 8-22V to 1-15V Step Down Volt Regulator 12V to 5V 3A Output Adjustable Power Su
This item: DROK® Waterproof DC-DC Buck Voltage Converter 8-22V to 1-15V Step Down Volt Regulator 12V to 5V 3A Output Adjustable Power Supply Transformer Module for Solar Panel Electric Fan Car Vehicle Auto
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Sold by DROK and ships from 鶹 Fulfillment.
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Top Brand: DROK

Highly Rated
50K+ customers rate items from this brand highly
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Product Description

DROK Buck Converter
DROK Buck Converter
This Item
9-22V Buck Converter
DROK 5A Buck Converter
DROK 12A Buck Converter
DROK 20A AC to DC Buck Converter
DROK 4A Boost Buck Converter
Buying Options
Customer Reviews
4.1 out of 5 stars 824
4.4 out of 5 stars 862
4.3 out of 5 stars 2,006
4.1 out of 5 stars 893
4.4 out of 5 stars 1,071
4.3 out of 5 stars 573
Input Voltage DC 8-22V DC 9-22V DC 6-32V DC 5.3-32V AC 110-220V DC 5.5-30V
Output Voltage DC 5V DC 6V DC 1.5-32V DC 1.2-32V DC 0-24V DC 0.5-30V
Max Current 3A 3A 5A 12A 20A 4A
Waterproof ✓ ✓ no data no data no data no data
USB Output no data no data ✓ no data no data no data
Display no data no data LCD LCD LCD LED

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Customer reviews

4.1 out of 5 stars
824 global ratings

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Customers say

Customers like the functionality, durability, and adjustability of the transformer. They mention it works great for a trail camera running off a 12 volt car battery. Customers also say it's easy to install and simple to connect. However, some customers have reported that the transformer overheats and can cause fire.

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FunctionalityDurabilityAdjustabilityEasy to installOverheating
33 customers mention "Functionality"33 positive0 negative

Customers like the functionality of the transformer. They mention it works like a charm, is extremely useful, and works fine. Some say it's perfect and has been working throughout the winter while exposed to moisture.

"...Works great." Read more

"Good." Read more

"Exactly what I needed. Working good. I have it hooked to a 25 watt solar panel that was outputting 15 to 20 volts...." Read more

"This worked perfectly for my backyard project, used it to step down from 12 volt to 5 volt no problem, just turn small screw on back to set required..." Read more

10 customers mention "Durability"9 positive1 negative

Customers are satisfied with the durability of the product. They mention it's of good quality, nice, and easy to fit on a board.

"Great product. Works as advertised." Read more

"nice product and small size easy to fit on a board" Read more

"Well made" Read more

"Super product and Vendor. Delivery was bang on as is the quality of their products. Recommended - Product / Vendor" Read more

9 customers mention "Adjustability"9 positive0 negative

Customers like the adjustability of the transformer. They mention it's a great feature, set your output voltage via the screw on the unit, and control to 6 volts. Some say the output is 5V stable with a very clean output.

"Adjustable voltage nice touch turn a little we screw on the back to get your proper voltage once you’re done put a little bit of hot glue on the..." Read more

"I like the fact that the voltage is adjusted via the screw on the unit. The downside is that it was not obvious which way to turn the screw...." Read more

"...Adjustible voltage is a great feature with this particular product. Use an in line led meter to confirm output...." Read more

"...Tested from 8V to 14V, output was 5V stable with a very clean output (about 50mv ripples on the Oscilloscope)...." Read more

4 customers mention "Easy to install"4 positive0 negative

Customers find the transformer easy to install and connect. They mention it works great.

"Was easy to install, and works great" Read more

"...Very simple to connect, although you will need an electrical tester to set the desired voltage...." Read more

"Easy to install and make the electrical connections. Use it to convert 18V to 12V for my cordless batteries...." Read more

"Easy set up. Clear explanation of input and output wires. Didn’t regulate volts as promoted. Was Generating some heat. Threw it out." Read more

4 customers mention "Overheating"0 positive4 negative

Customers are dissatisfied with the overheating of the transformer. They mention it's a potential safety hazard and can cause fire.

"...hook up to my fish finder .used it about 5 times .it ended up over heating smoking and melting and nasty smoke smell .glad I was beside it when this..." Read more

"...has failed, now only outputting a maximum of 0.9 volts and getting too hot to touch. Defective after 1.25 years of intermittent use...." Read more

"...Didn’t regulate volts as promoted. Was Generating some heat. Threw it out." Read more

"Can cause fire..." Read more

Ajustement du voltage avant tout branchements
5 out of 5 stars
Ajustement du voltage avant tout branchements
J'avais besoin d'un régulateur de voltage pour un clavier tactile pour système anti-intrusion, j'avais une perte importante de voltage sur un câble 22-4 d'environ 80', le clavier vient avec un transformateur de 7.5 volts, lors de l'installation je me suis rendu compte que le voltage au clavier était de 6 volts ce qui rendait celui-ci instable, alors pour régler le problème j'ai installé un transformateur de 12 volts et au clavier le petit module Drok que j'ai ajusté à 7.5 volts. Je suis très satisfait de ce produit. Je le recommande sans problème.
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Top reviews from Canada

  • 鶹 Customer
    5.0 out of 5 stars Works as a voltage limiter for automotive gauges.
    Reviewed in Canada on July 10, 2025
    Verified Purchase
    The DROK Adjustable DC-DC Buck Voltage Converter worked great as a voltage limiter for the gauges in my 1977 Dodge CB300 van. I chose it because I wasn't sure what the final voltage needed to be. It turned out that 5 V worked fine.
    Helpful
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  • 鶹 Customer
    5.0 out of 5 stars Good.
    Reviewed in Canada on June 16, 2025
    Verified Purchase
    Good.
    Helpful
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  • claude j
    4.0 out of 5 stars as per description
    Reviewed in Canada on April 23, 2025
    Verified Purchase
    nice product and small size easy to fit on a board
    Helpful
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  • Fredd-E
    5.0 out of 5 stars Works as expected
    Reviewed in Canada on May 29, 2023
    Verified Purchase
    I like the fact that the voltage is adjusted via the screw on the unit. The downside is that it was not obvious which way to turn the screw. Eventually, I noted that tuning clockwise would reduce the voltage. This is only possible with a voltmeter and power supply connected.
    Helpful
     Report
  • Joe Consumer
    1.0 out of 5 stars Doesn't regulate anything, 12v in, 12v out
    Reviewed in Canada on June 6, 2025
    Verified Purchase
    Doesn't regulate anything, 12v in, 12v out. Tried adjusting POT but no change. Piece of crap, don't buy!!!!!
    Helpful
     Report
  • Travel trailer tower
    5.0 out of 5 stars It works!
    Reviewed in Canada on April 25, 2025
    Verified Purchase
    We were having trouble with the water heater in our travel trailer since converting to lithium iron battery system as it runs over 14 volts normally. This knocked it down enough so the circuit board could work properly.
    Helpful
     Report
  • Stevo
    3.0 out of 5 stars Do your research and ask questions. More technical info should be provided. Fire hazard?
    Reviewed in Canada on February 2, 2023
    Verified Purchase
    It arrived on time. It's a great idea if it works without causing other issues. These r used to protect electonics, in my case the equipment is worth over $3,000 so I'm gonna highlite my concerns with hope answers will be provided. Adjustible voltage is a great feature with this particular product. Use an in line led meter to confirm output. Waterproof feature is great as used in hard water battery box. Installed Drock dc/dc voltage regulator in battery box to drop and regulate 20v tool battery to 16 v to power fish finder, lights, and USB ports for hard water fishing. Dialed it down to 16V per led meter installed after master switch. I initially installed Drock in line before master kill switch directly after twin Dewalt 20v batteries in parallel. I suspect it is drawing power slowly from batteries as batteries had fraction of charge after a week despite master switch off. This is a concern mfg has not advertised. I am also concerned bout several reviews on line stating it can get very hot and melted wires on similar applications I saw after I received it. If this is true, this product should be recalled or explained better. Don't leave batteries hooked to this unless can be disconnected by switch or unplugged. MFG SHOULD INVESTIGATE AND EXPLAIN CONCERNS OR RECALL AFFECTED UNITS ASAP. I note input and output wires are very light guage, Maby 20gu or lighter?? Maby should be upgraded to 14 gu considering posted amperage capacity. I later moved master switch between batteries and Drock to avoid battery draw if its happening. Also posted reviews and ratings do not identify between the many components marketed by this seller so reviews may be misleading to potential buyers of any product considered. I've noticed this other items on 鶹 so may be an 鶹 issue?? Will be interesting if this review gets mfg or 鶹 attention/response?
    Customer image
    Stevo
    3.0 out of 5 stars
    Do your research and ask questions. More technical info should be provided. Fire hazard?

    Reviewed in Canada on February 2, 2023
    It arrived on time. It's a great idea if it works without causing other issues. These r used to protect electonics, in my case the equipment is worth over $3,000 so I'm gonna highlite my concerns with hope answers will be provided. Adjustible voltage is a great feature with this particular product. Use an in line led meter to confirm output. Waterproof feature is great as used in hard water battery box. Installed Drock dc/dc voltage regulator in battery box to drop and regulate 20v tool battery to 16 v to power fish finder, lights, and USB ports for hard water fishing. Dialed it down to 16V per led meter installed after master switch. I initially installed Drock in line before master kill switch directly after twin Dewalt 20v batteries in parallel. I suspect it is drawing power slowly from batteries as batteries had fraction of charge after a week despite master switch off. This is a concern mfg has not advertised. I am also concerned bout several reviews on line stating it can get very hot and melted wires on similar applications I saw after I received it. If this is true, this product should be recalled or explained better. Don't leave batteries hooked to this unless can be disconnected by switch or unplugged. MFG SHOULD INVESTIGATE AND EXPLAIN CONCERNS OR RECALL AFFECTED UNITS ASAP. I note input and output wires are very light guage, Maby 20gu or lighter?? Maby should be upgraded to 14 gu considering posted amperage capacity. I later moved master switch between batteries and Drock to avoid battery draw if its happening. Also posted reviews and ratings do not identify between the many components marketed by this seller so reviews may be misleading to potential buyers of any product considered. I've noticed this other items on 鶹 so may be an 鶹 issue?? Will be interesting if this review gets mfg or 鶹 attention/response?
    Images in this review
    Customer image
    2 people found this helpful
    Helpful
     Report
  • Dave Freed
    5.0 out of 5 stars awesome part
    Reviewed in Canada on July 6, 2022
    Verified Purchase
    I used it on my motorhome bathroom fan. You will need a very small screw driver to adjust voltage like glasses set of screw drivers. I adjusted to voltage to 12.3 shut power off 4 to 5 times and the voltage never changed. Works great.
    Helpful
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Top reviews from other countries

  • Jwj
    5.0 out of 5 stars Dropped that 20v right down to 12v
    Reviewed in the United States on May 29, 2025
    Verified Purchase
    I used this device to easily drop the 20 volts from my Dewalt battery down to 12 volts to run a small pump. Worked flawlessly. Allows voltage change with the adjustment of a single potentiometer. Glad I found a review for another product where someone referenced this device as I had never heard of a buck converter.
    Report
  • Mr. Wilson
    5.0 out of 5 stars The one you want.
    Reviewed in the United States on May 9, 2025
    Verified Purchase
    Use is for 5v dash cam with LiFePO3 battery in parking mode. Replaced another brand DC buck converter that had a handy LED readout but also a 0.4w parasitic draw. This DROK has no detectable draw when powered up. Maintained a rock steady 5.00 vdc output when tested with 12.0 through 13.7 vdc input.

    Another benefit to this design is the stout build. The other DC buck converters are "very fragile". I will be surprised if this ever fails. DROK products have not failed me yet.
    Report
  • Wookieecantina
    5.0 out of 5 stars Great little converter! Compact and accurate, couldn't ask for more.
    Reviewed in the United States on September 10, 2024
    Verified Purchase
    Being so small and compact, this converter exceeded. my expectations. Albeit waterproof, I wouldn't feel quite right placing in an ultra wet location without some degree of protection, but that's just me, I'm probably a bit too cautious.
    I tested the unit and works extremely well, quite accurate and doesn't heat up.
    We're using this to reduce 12 volts DC down to 8 volts DC for stage lighting, that being custom flickering candles, think Haunted Mansion. Running at the recommended 9 volts causes them to run hot and also taxes the three incandescent bulbs, so we lower the voltage to help the candles last a great deal longer.
    This small converter is perfect for this application, allowing us to adjust the voltage with some degree of precision.
    Great part!
    Report
  • Tip DS
    4.0 out of 5 stars Does the trick.
    Reviewed in the United States on January 15, 2025
    Verified Purchase
    This item is easy to get working. Connect the input voltage, adjust the output voltage. (Using the miniature adjustment screw on the bottom of the unit.). I was able to adjust between 1.5VDC to 18+ VDC using 12.5VDC as input. It arrived with one of the mounting tabs broken off, but that didn't affect overall function, or my ability to mount the unit. Satisfied for the short term. I will have to update later if anything changes.
    Report
  • Tom G
    5.0 out of 5 stars good efficient power supply
    Reviewed in the United States on January 5, 2024
    Verified Purchase
    When I 1st powered this up it was ‘railed’ high. With 12v in it had 11.18 v out. I turned the adjustment pot counter clockwise (a lot) with no change. Seemed dead on arrival. I turned the adj. pot clockwise and it (eventually) began to change the output voltage. I set the voltage to 6.5 volts (what I need for my application). I then applied a variety of loads. The next time I powered it up it was at 6.66 volts. I couldn’t figure out why it shifted. Perhaps my setting pot was dirty? I went on test how efficient it was. With a 12v supply and no load it draws just 1.7 mA. As I increase the load to 1.3 Amps the output voltage dropped just 0.03 v, and its efficiency ranged from 85% to 93%. Those are very impressive numbers for an inexpensive stand alone power supply. I still haven’t pinned down the voltage shift. I let it sit for a couple of days, and the voltage remained constant. I changed the set point back to 6.5 volts and it seems to be staying constant. I don’t know what other say about the problem of the output voltage moving around, but it seems to have gone away. It is installed and working fine.
    Report