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DROK 25W 3A Adjustable DC-DC Converter Automatic Boost Buck Volt Regulator 3-15V to 0.5-30V12V Step-up/Step-down Power Supply Module Board for Auto Solar Battery

3.5 out of 5 stars 18 customer reviews
| 7 answered questions
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Specifications for this item
Brand Name DROK
Part Number 090440
System of Measurement US
UPC 619397029329
EAN 0619397029329
Number of Items 1
Size 3A/25W
Size 3A/25W
UNSPSC Code 41113600
Industrial Deals
$10.18 Free Shipping for Prime Members | Fast, FREE Shipping with Amazon Prime Only 11 left in stock. Sold by DROK and Fulfilled by Amazon. Gift-wrap available.

Fulfillment by Amazon (FBA) is a service we offer sellers that lets them store their products in Amazon's fulfillment centers, and we directly pack, ship, and provide customer service for these products. Something we hope you'll especially enjoy: FBA items qualify for FREE Shipping and .

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Frequently Bought Together

  • DROK 25W 3A Adjustable DC-DC Converter Automatic Boost Buck Volt Regulator 3-15V to 0.5-30V12V Step-up/Step-down Power Supply Module Board for Auto Solar Battery
  • +
  • SUNKEE DC-DC Converter Module Step up and down In 3.5-28V Out 1.25-26V Adjustable (LM2596S+LM2577S)
  • +
  • DROK Micro LED DC-DC Digital Boost Voltage Converter LM2577 3-34V to 4-35V 5V/12V 2.5A Step-up Adjustable Volt Regulator Board Module Power Supply Transformer
Total price: $32.46
One of these items ships sooner than the other. Show details
Buy the selected items together

Product Features

  • The module is non-isolated boost/buck Voltage regulator
  • Small size(48×23×14mm) with wide input voltage(dc3-15v) and output Voltage (DC 0 5-30v)
  • With output short circuit protection(the output will be 0 if the Item in short circuit till you exclude short-circuit)
  • Adopts high quality control chip and Ultra low on-resistance(mosfet), can REACH 25W without cooling, high efficiency
  • Applications: solar charge regulator; power supply for electronic equipment; battery regulator

Product Description

Parameters:
Power: 25W (MAX)
Input current: 3A (MAX)
Input voltage: DC 3-15V
Output ripple: 40mV (max)
Load regulation: +/- 0.5%
Output voltage: DC 0.5-30V
Dimension: 48 x 23 x 14 mm
Switching frequency: 150KHz
Voltage regulation: +/- 2.5%
Conversion efficiency: 95% (MAX)
Operating temperature: -40 to +85 Celsius
Rectification: Non-synchronous rectification
Modules nature: non-isolated Boost Buck (SEPIC)
Output short circuit protection: Yes(The output will be 0 if the item in short circuit till you exclude short-circuit)

Some Applications:
Solar charge regulator
Power supply for electronic equipment
Battery Regulator, can Regulate 12V battery (10-14V) output in 12V

Typical output, do not need heatsink (reference):
Input 12V; Output 12V/2A; 24W
Input 12V; Output 5V/3A; 15W
Input 12V; Output 13.8V/1.8A; 25W
Input 5V; Output 3.3V/3A; 9.9W

Package includes:
1x DC Converter

Product Details

  • Shipping Weight: 0.3 ounces (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B00CCL3UP2
  • Item model number: 090440
  • Average Customer Review: 3.5 out of 5 stars  See all reviews (18 customer reviews)
  • Amazon Best Sellers Rank: #34,066 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
Customer Questions & Answers
See questions and answers

Customer Reviews

Top Customer Reviews

4.0 out of 5 starsDoes what it says
By J. Grant on March 18, 2015
Verified Purchase
Nice general-purpose converter that can handle any of your DC->DC conversion needs at fairly high amps. I got two for my portable electronics toolbox so I can use pretty much any handy DC supply to power whatever I happen to be working on. Solder a couple 'gater clips to the inputs and another set to the outputs and toss it in your bag of tricks. I've used them with small 12V solar panels and/or a supercap battery to power various electronics projects at everything from 3.3V to 24V. Just adjust the pot to dial in exactly the voltage that you need. I haven't approached the 25W/3A limit so I can't speak to any "high power" uses, but for the small electronics projects I typically work with it is perfect. It can even handle enough power to run a small motor or solenoid.

The only thing I don't like about it is that it won't soft-start. If your DC source drops too low the unit switches off and will need to be reset. This is probably meant to be a safety feature and there's a jumper on the board that you can wire to a switch or something to make the reset easy, but I wish there was an option to make it start automatically. In one application I had a solar panel driving a circuit directly (through the converter unit) without a battery. This was fine as I only needed the circuit to work during the day. Problem was that I had to rig a separate circuit to reset the board when the sun came up. That or go out and do it manually every morning. Minor problem, and easily solved, but..
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5.0 out of 5 starsI'm happy with the product for my purpose
By C. Dao on February 18, 2015
Verified Purchase
The first unit did not work. There were solder on the pads and it looked used. I contacted DROK. DROK responded quickly by sending a replacement. The replacement arrived today. There was not any solder on the input/output pads. It worked well as described. I'm happy with the product for my purpose. There aren't many buck-boost converter that can provide 5V, 3A output like this DROK unit.
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4.0 out of 5 starsI received the unit in a nicely sealed proper ESD bag
By Daniel on April 13, 2016
Verified Purchase
I received the unit in a nicely sealed proper ESD bag. Awesome. I was expecting one of those pink zip locked static bags, so being properly sealed was quite nice.

I attached a 12 volt power supply to test the unit and it did quite well with the voltage. The adjuster is quite sensitive, I had a little trouble getting to an exact voltage, but once I managed to dial it in, it did a fairly good job at keeping it at the desired voltage. From where it was set, the most it dropped was ~0.02v, so a slight tolerance was needed for testing, but given the price, it managed to maintain the desired voltage quite nicely, even at ~2 amp pull from a USB tester.

If I had any complaints, it would probably be that the hole on the pad for attaching a wire is a little small, and that I will likely have problems trying to attach a solar panel to this given its thicker wiring, but I used alligator clips when I tested it, and will probably just clamp the wires that way, so it won't be a permanent installation if I do use it for solar, as I originally planned to.

All in all, I really like the unit, and I will end up getting more of these if I have use for more than just one.
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4.0 out of 5 starsI love the Buck/Bost feature, your voltge can never be wrong!
By Radar Mile on September 12, 2015
Verified Purchase
At first I had a little trouble, but the fine people at DROK helped me out.
My suggestion is, load the thing before setting the voltage.
I was adjusting the voltage of the first one, and it went ballistic, blew the supply fuse, and emitted smoke from the board.
The second one I loaded it with a small lamp, then I set the voltage. It worked much better.
Working great now, the coolest thing is, no matter what your supply voltage does, the output remains the same
I am using this on an off grid system to supply device that needs 13,6 volts to be happy, no matter where the battery voltage goes down to 11.7 in the early morning, or 14.8 volts on the absorption charging phase, the output is very close to the 13.6 volts the board is set at. It does run a few degrees above ambient, but not bad at all.
Minus one star because the first one broke, second one is doing a great job.
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5.0 out of 5 starsFor a Battery-Powered IP Camera carried by my cat
By D. Chanin on January 15, 2016
Verified Purchase
This was purchased in order to use two AA batteries to power something like a Yi Smart Camera (WiFi IP Camera with 2-way audio) that's been stripped down and configured to be a streaming webcam carried by my cat who would be carrying the camera and batteries by means of the Metpet Walking Jacket.

The specs look fine. It performs fine but it's a bit large for my application, and I'm going to see if a much smaller board from this vendor will do the trick. All I need is the set-up function. And the output need only be at least 4.5 volts and no more than 5.5 volts.
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3.0 out of 5 starsTypical
By lglb on April 16, 2016
Verified Purchase
Won't turn on with strong, steady 3.3V supply. Brand new Energizer AA Li-Ion batteries run the load easily without this regulator. Board won't even turn itself on. Board does work - runs like all the other comparable units when fed 12V from another power supply. Specs say 3 volt min. - not true, at least not this unit. Did not give it 1 star - it did run like all similar boards - just another average unit. Also note that there are no terminal connectors - just solder tabs.
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2.0 out of 5 starsIt does not show high efficiency. I did some ...
By ANTONIO C. on August 23, 2016
Verified Purchase
It does not show high efficiency. I did some measurements and max. eff. is 77% when voltage at input and output are the same. Also it is hard to start when is in step up mode. Actually I have to start in step down mode and then shift to step up to get it working. Is it defective???
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Most Recent Customer Reviews

1.0 out of 5 starsjunk or defective?

i cant tell if this is just a piece of junk or simply defective, i am returning this. 1 star just because this was very well packaged, otherwise 0.

Published 5 days ago by Amazon Customer
5.0 out of 5 starsLove it !

Great little power supply. I'm powering an 8.6 volt video camera from a 5 volt lithium 16Ah battery pack. No more wimpy battery issues.

Published 4 months ago by Stephanie Anne
5.0 out of 5 starsIt also is working fine for what it was used for

This item was exactly as described, delivered on time and packed well. It also is working fine for what it was used for....thank you.

Published 4 months ago by Donald Maher
1.0 out of 5 starsdead on arrival

dead on arrival. no output voltage what so ever

Published 6 months ago by kw
5.0 out of 5 starsWorked great, stepped up LiPo battery to 9V

Worked great, stepped up LiPo battery to 9V.

Published 10 months ago by mhsneon
5.0 out of 5 starsWorks very well

The unit has maintained a very steady output voltage with varying inputs. Working exactly as described!

Published 11 months ago by Fayk
4.0 out of 5 starsFour Stars

voltage step up and step down are good and stable.

Published 11 months ago by Jenny
5.0 out of 5 starsperfect solder connections

As an electronics technician, I have tested this to full capability, and it does work. I'm positioning it in path of a CPU fan, it does get warm at full power. Read more

Published 11 months ago by R. Seward
5.0 out of 5 starsFive Stars

It works flawlessly.

Published 13 months ago by Ray

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