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DC to DC Buck Converter Step Down Voltage Regulator Sheet

DC Buck Converter

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By | 2018-02-28T06:23:32+00:00 February 16th, 2016|Categories: Buck Converter|64 Comments

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  1. scott falke March 24, 2016 at 4:18 am - Reply

    A DROK® Shockproof DC/DC 30-60V 36V/48V to ***19V*** 15A 360W Synchronous Buck power Converter Waterproof Step-down Voltage Regulator Power Supply would be very usefil for Laptop PCs, mini PCs and many types of LCD displays.

    • Drok March 25, 2016 at 1:40 am - Reply

      Hello scott falke,
      Thank you for your appreciation.
      If you have any questions, please feel free to contact us.
      Best regards

      • Jalene January 7, 2017 at 10:18 pm - Reply

        – Well I have to say, I’m not too sure spring has sprung yet in seattle. We still have a lot of root veggies going on at the market, but I loved this post. Sometimes certain lines from boek/sevon the newspaper strike me — other times, like last night, I make a pretty perfect cake and the science behind the whole thing kind of blows me away. Geekiness confirmed. Miss you!

    • Matthias kints, van March 18, 2018 at 10:33 am - Reply

      i completely agree with scott falke .. i am looking for the same thing myself but i can not find it! please add such a device to your supply.

      kind regards

      • Drok March 21, 2018 at 8:50 am - Reply

        Dear Matthias kints, van
        Thanks for your suggestion.
        We will take it into consideration in the future development.
        Best regards.

  2. David April 20, 2016 at 5:40 pm - Reply

    For your modules that support constant current, what is the minimum current and the step-amount/output resolution?

    • Drok April 21, 2016 at 1:29 am - Reply

      Hello David,
      Thank you for your message.
      Could you please tell us the ASIN or the link of the product you are referring to?
      With your help, we can find a solution more quickly.
      Best regards

  3. Nick April 28, 2016 at 8:22 pm - Reply

    Want Fuse protection for dc-dc 48v to 12v converter. Drawing 48 vdc out of a large battery pack and feeding 12vdc 240watts to misc 12v units.
    I want to protect the converter. What size fuse is needed for the 48v side?

    • Nick April 28, 2016 at 8:31 pm - Reply

      Our amazon order #110-6653973-5267465.

    • Drok April 29, 2016 at 1:23 am - Reply

      Hello Nick,
      Thank you for writing in.
      Could you please tell us what the load is in your application and how much the power of the load is?
      Waiting for your reply.
      Best regards

  4. David April 30, 2016 at 2:41 am - Reply

    Do you still sell this product:

    DROK® DC Boost Converter Step Up Voltage Module Regulated Power Supply Board DC 6V-35V to DC 6V-55V

    • Drok April 30, 2016 at 6:11 am - Reply

      Hello David,
      Thank you for writing in.
      Could you please tell us the ASIN or the link of the product you are referring to?
      With your help, we can find a solution more quickly.
      Waiting for your reply.
      Best regards

  5. Rick May 2, 2016 at 11:57 pm - Reply

    Could you please point me in the direction of a wiring diagram for the buck step down regulator.

    • Drok May 7, 2016 at 1:34 am - Reply

      Hello Rick,
      Thank you for writing in.
      Could you please tell us your order ID or the link of the product?

  6. Plamena May 10, 2016 at 12:47 am - Reply

    I just ordered a bunch of these units and haven’t been able to get any of the ones I’ve tested to work. The voltage regulation seems to work fine. When I connect my multi-meter in 10A current mode to the output the current initially reads somewhere around 3.5 Amps. As soon as I start to turn the pot counterclockwise to decrease the current, the output starts to jump around and settles at 4.4Amps. No matter which direction I turn the CC pot or how much I turn it, the current output does not change at all. I am using a 5.7 battery as the supply and trying to step it down to 3.3V with a current output max set to around 1.2 Amps. Am i doing something incorrectly or did I just buy 22 of the wrong thing? Or are a bunch of the units defective and I just haven’t gotten to a good one yet?

    • Drok May 10, 2016 at 1:44 am - Reply

      Hello Plamena,
      Thank you for your message.
      Sorry for the inconvenience caused on you.
      Could you please send us an email to tell us more details of how you operate the product,such as the input voltage/current, the wiring, the working environment?
      If you can, we sincerely hope that you can send us some images or video to let us check the problem details.
      Waiting for your reply.
      Best regards

      • Plamena May 10, 2016 at 2:05 am - Reply

        I have discovered the issue. On the Amazon listing and on your website you list this product as having a minimum input voltage of 4V. However after I looked up the datasheet ( for the regulator you have on-board, that part is listed as having 8V minimum input voltage. So your incorrect listing mislead me into buying 22 of this part which does not work with my 6V input voltage and is now useless for my project needs. Please fix your listings for this part or other people will run into a similar frustration.

        • Plamena May 10, 2016 at 2:24 am - Reply

          Furthermore, I am noticing in your Amazon store that you have a few other listings stating incorrect information about the regulator used. In looking at the photos of your products you seem to be using the XL4015 regulator in a few of your devices where you state the specs for other regulators. This is major false advertising and incredibly frustrating.

    • Lucy January 8, 2017 at 1:43 am - Reply

      A really good answer, full of raianoiltty!

  7. […] A few links: TncPi : RaspberryPi: HdmiPi (screen) : Drok PS converter: on amazon  or DROK home page […]

    • Drok June 13, 2016 at 1:23 am - Reply

      Hi RaspberryPi and TncPi.. such fun! |,
      Thank you for writing in.
      What can we do for you?
      Best regards

  8. Gopinath Rajee July 6, 2016 at 3:52 pm - Reply

    Hi There,

    I’m a newbie to electronics and I’m learning to teach my 8yr old son. With the help of breadboards, I’m in the process of conducting experiments with him on Diodes and Transistors for which I need a variable voltage source. I searched on Amazon and thought this unit (DROK® LM2596) would be a good and I bought it (My amazon order is 104-0300285-9023436). Along with this, I bought quite a few digital voltmeter, ammeter … etc.

    The experiments that I will be doing with him are very academic in nature as I want him to learn the basics. Would this be a good choice for my need.

    Any help would be greatly appreciated.

    • Drok July 7, 2016 at 1:31 am - Reply

      Hello Gopinath Rajee,
      Thank you for writing in.
      Since there are limited information of your application, such as the input voltage/current, the output voltage/current, the working environment,
      it is hard for us to ensure if the product is suitable for your application or not.
      Here are the parameters of this product:
      Input voltage: 5-32.0V (we suggest you to leave margin)
      Output voltage: 0-30.0V
      Output current: 1.5A Max (please enhance cooling when > 1.5A)
      Output power: 30W Max
      Output voltage preset resolution: 0.1V
      Voltage testing accuracy: +/-(1%+2 digits)

      Wiring connection:
      IN+: connect IN+ to your Input +
      IN-: connect IN- to your Input –
      Out+: connect OUT+ to your output +
      Out-: connect OUT- to your output –

      How to use:
      1. ON/OFF is the output voltage control button. when connect the power supply, the default option is to turn on the output voltage. press the button will turn off the output voltage. then press it again can turn on the output voltage again, followed by recycling.
      2. The two buttons named IN & OUT (which are on the left of the digital display) can switch between current input voltage and output voltage.
      3. SET key is to set the output voltage. Press SET shortly, the decimal place of output voltage flashes. press the two buttons named + & – to increase or decrease the value, thereby setting the decimal place of output voltage. after select the required value of decimal place, press SET again and the integral place of output voltage starts flashing. with the same two buttons can set the required value by using the same method. when the required value is set, press the SET to quit setting. if you don’t press the SET key, the setting will be automatically quitted after 6 seconds and the item will store the current setting value.

      1. Please make sure that you use this module within its working range; do not output short-circuit or charge the battery, otherwise the board would burn.
      2. When you set the parameter, please use the module after you make sure output voltage is stable to avoid any possible damage.

      Hope this can help you.
      Best regards

  9. Enrique November 7, 2016 at 1:49 am - Reply

    Hello, I buy a voltage regulator but do not have the manual to connect, where I can order the manual.

    • Drok November 7, 2016 at 2:53 am - Reply

      Hello Enrique,
      Thank you for writing in.
      Could you please tell us your order ID or the link of the product so that we can ensure which product you have bought?
      With your help, we can find a solution more quickly.
      Waiting for your reply.
      Best regards

      • Brandi January 7, 2017 at 10:18 pm - Reply

        I look at the posts of countless bloggers, but not one of them is allowed to match you in terms of writing design! Thr&ee#8217;s a thing magical of what attracts and so are not permitted to break apart for extended stays! Keep up!

        • Drok January 9, 2017 at 8:50 am - Reply

          Thank you for writing in.
          And thank you for your support.
          We will keep moving.

  10. John Basile November 16, 2016 at 9:54 pm - Reply

    Hi Guys

    I just received my amazon order of my DROK® DC-DC Buck Converter 3.5-30V to 0.8-29V 10A Step-down Volt Adjustable Output Voltage Regulator Module Power Supply with High Accuracy Voltmeter Red Digital Tube Display. Just wanted to let you know what i found,one screw was missing from the board that hold to the case.
    ( No problem i found a replacement one) and the case was bent, ( no problem fixed it too.)

    Just wanted to let you know what i found .And it works just find.


    John B

    • Drok November 17, 2016 at 1:58 am - Reply

      Hello John Basile,
      Thank you for writing in and so sorry for the trouble caused on you.
      We have tested our products seriously before shipping to Amazon warehouse.
      This problem may be caused by the shock during delivery.
      However, we must apologize for the inconvenience caused on you.
      We will check all the product again and pay more attention to the packing method.
      Great thanks for bringing this matter into our attention.
      If there is any problem or suggestions to our products or service, please feel free to contact us.
      Looking forward to hearing from you.
      Best regards

  11. ABEL December 22, 2016 at 2:35 pm - Reply

    I recently purchased DROK Stable DC-DC30-60V 48V to 24V 10A 240W Buck Power Converter Waterproof Non-isolated Synchronous Step-down Voltage Regulator Volt Power Supply Transformer.

    I want to use it to step down the voltage going to a contactor operating at 24V dc.

    Input to the converter is from a PV / Inverter system bus bars where the operating current can go up to 200Amps.

    The output current from the converter is some how negligible since it’s just to operate the Contactor dc coil.

    Confirm that the converter will work in such configuration.

    • Drok December 23, 2016 at 10:02 am - Reply

      Dear ABEL,
      Thanks for your message.
      Does your PV/ Inverter system output constant current?
      If it doesn’t, our converter can work, on condition that the output voltage of your PV is within DC DC30-60V.
      Hope this would be helpful.
      Best regards

  12. Mohannad El-Tarzy January 25, 2017 at 10:43 pm - Reply

    I want to know if the DROK (48/12V 15A) DC Buck Converter ‘s case would be durable in 4-m-depth circumstances underwater ?

    • Drok January 26, 2017 at 3:40 am - Reply

      Hello Mohannad El-Tarzy,
      Thank you for writing in.
      Since there are several buck converter on the post, it is hard for us to ensure which product you are referring to.
      Could you please send us the link of the product to let us ensure it?
      Whit your help, we can find a solution more quickly.
      Best regards

  13. Gary February 3, 2017 at 5:23 pm - Reply

    Hello. On the product “DROK® Car Power Converter DC 8-20V 12V to 5V/3A Voltage Converter Parallel Dual USB Adapter Connector” several comments on the amazon Uk site have stated that this product interferes with radio & DAB reception. How can I minimise the interference?

    • Drok February 5, 2017 at 9:35 am - Reply

      Hello Gary,
      Thank you for writing in.
      Since there are many similar titles for our product, could you please send us the link of product so that we can confirm it?
      Look forward to your reply.
      Best regards.

        • Drok February 7, 2017 at 8:21 am - Reply

          Hello Gary,
          Thank you for your reply.
          Could you please tell us how do you use it?
          If there is interference, we are terribly sorry the only way is try to keep the item away from other device.
          Beg your forgiveness and hope you can understand.
          Best regard.

          • Gary February 25, 2017 at 9:35 pm

            I am using it to power a dashcam and charge a phone. The unit is mounted behind the dashboard about 0.7 meters from the radio. When it is connected some of the FM and DAB radio signals drop out.

  14. Mike Kirkpatrick March 30, 2017 at 4:59 pm - Reply

    I just purchased the 12v to 6v step down buck converter. Does this have reverse discharge protection or do I need to add a diode and if so can you make recommendations on size and placement location?

    • Drok April 6, 2017 at 3:02 am - Reply

      Hello Mike Kirkpatrick,
      Thank you for writing in.
      We are sorry this item only have over temperature and over current protection.
      Actually, we suggest not to refit our item by themselves. We can’t ensure whethere somehting wrong in that case.
      Hope you can understand.
      For more questions, please feel free to contact us.
      Best regards.

  15. Larry April 1, 2017 at 5:19 am - Reply

    What is load regulation (output voltage droop versus current sourced) of the

    “DROK Shockproof DC/DC 30-60V 36V/48V to 24V 15A 360W Synchronous Buck power Converter”

    And also of the

    “DROK Waterproof DC-DC Buck Converter 8-75V to 5V 10A 50W Voltage Regulator 12V/24V/36V/48V/60V to 5V Volt Step-down Power Supply Transformer Module”

  16. Tran April 5, 2017 at 10:17 pm - Reply

    On your listing of DC-DC 8A Buck converter offered through and have listed detail mounting interface for stabilivolt tube of 12V fan installation. But received a version that doesn’t have that interface which i wanted that interface for a project. On the PCB printed with ZS-PD8A and have a transistor/regulator type at the input end. Seem a little misleading.

    • Drok April 6, 2017 at 3:28 am - Reply

      Hello Tran,
      Thank you for your writing in.
      We are sorry to hear that.
      Could you please firstly send us the order ID so that we can confirm the item you purchase?
      If you don’t want to send order ID here, you can send it to our service email:
      service#droking dot com ( please replace # with @)
      Best regards.
      Please don’t worry, we will find solution for you as soon as possible.
      Best regards.

  17. Ken May 23, 2017 at 2:50 am - Reply

    I was just looking at the list of DC Buck Converters. Please add a column to the table and put a part number in it for each item. That would make it much easier to discuss issues in the forum by referring to a part number. How many times have you had to ask for additional information or description of an item before you can respond? A simple part number would really help!

    • Drok May 23, 2017 at 8:02 am - Reply

      Hello Ken,
      Thank you for your suggestion.
      Actually, we really want to solve problem for our customer quickly. We do have part number and ASIN for each item, which can be found on Amazon product page. We know our customer has placed order on Amazon, but without part number or ASIN, it is really hard for us to confirm the item they are talking. Hope you can understand.
      Best regards.

  18. Michael Waite July 10, 2017 at 7:20 pm - Reply

    I ordered this DC to DC Buck Converter: (Part 180049). My question: Is the output ground isolated from the input ground? I would like to use an external dual-voltage meter to read simultaneously the input and output voltages, but it would require me to tie the input and output grounds together.

    • Drok July 11, 2017 at 8:07 am - Reply

      Hello Michael Waite,
      Thanks for yoru business.
      There is no isolation between input ground and output ground.
      For any more questions, please don’t hesisate to contact us.
      Best regards.

  19. Rajeev August 15, 2017 at 5:48 pm - Reply

    DROK DC-DC Buck Converter 12V/24V to 5V 5A/25W Step-down Voltage Transformer Volt Regulator Power Supply Inverter Module
    DROK Waterproof DC Buck Converter Voltage Regulator 8-22V to 1-15V 5V 12V 3A Adjustable Output Power Supply Transformer

    Can i get data sheet for these two products ?? I tried looking everywhere.
    I want to know how clean the output volatge is ??

    • Drok August 16, 2017 at 9:27 am - Reply

      Hello Rajeev,
      Thanks for writing in.
      Are you talking about the following products?

      Here are the simple instructions.
      090010 pdf
      Best regards.

  20. Rajeev August 16, 2017 at 12:40 pm - Reply


    Thank you for reply, I am actually looking for complete datasheet with all the out put graph and want to see how much the noise levels are ?
    Data sheet you gave is available in the amazon sale page but i am looking for more information than that.


  21. John Hurst August 21, 2017 at 1:48 pm - Reply

    Is there any way to eliminate the RFI emitted by the 090605 DC-DC Buck Voltage Converter 8-22V 12V to 5V/3A USB charger? It is interfering with nearby radio receivers.

  22. James December 4, 2017 at 4:25 pm - Reply

    Are there any plans to create a version that converts from 90v DC or 110v DC to 12v/24v DC?
    I know of several applications where such a conversion is required and would be very helpful…

    • Drok December 5, 2017 at 8:31 am - Reply

      Hello James,
      Thanks for writing in and suggestion.
      Though we don’t have such converts now, we will reflect this to our team and think about it for future development.
      Best regards.

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    • Drok March 26, 2018 at 9:28 am - Reply

      Dear mezo,
      Thanks for your suggeston on our website.
      Best regards.

  24. Lumigan otc March 29, 2018 at 9:53 am - Reply

    It is truly a nice and useful piece of information. I am glad that you shared this useful info with us.
    Please stay us informed likke this. Thanks for sharing.

  25. Phil March 12, 2020 at 12:55 pm - Reply


    I have purchased this module.

    I found every time I turn on the module (provide supply voltage). It gives an default constant voltage output of 5V. Can I change default voltage into 12V instead of 5V.

    Thank you

  26. bill deatherage March 17, 2020 at 1:03 am - Reply

    i bought a 12v converter. i have 12v in and nothing out. is there a reset on this? why no volts coming out? it use to work.

    • Drok March 18, 2020 at 10:22 am - Reply

      Hello bill deatherage,
      Would you like to offer a product link or other information so that we confirm item?
      Best regards.

  27. Superv900 January 5, 2021 at 9:21 pm - Reply

    I am having an issue that I can’t seem to troubleshoot. I purchased a DC Buck Module, DROK Adjustable Buck Converter Step Down Voltage Regulator 6V-32V 30V 24V 12V to 1.5-32V 5V 5A LCD Power Supply Volt Reducer Transformer Module Board with USB Port Protective Case.  I am powering the Drok with a isolated ground 20 volt 4.65 amp power source. The output of the Drok is going into a device that requires 9 volts and can use up to 5 amps. The devices after powered on stabilizes at 9v  and 0.21 amps. As soon as more current is needed the Drok immediately switches from Constant current (blue light) to Variable (green light) and supplies ample amperage to do power what is needed up to about 1.5 amps, which is all the demand I am asking.  Where I am having my issue is when my device goes into a bypass mode and consumes less current. When my device goes into bypass mode the amps drop to 0.16 amps and voltage is maintained at 9 volts. When this happens after the Drok stabilizes at 0.16 amps and is in constant current mode 3 seconds later the Drok powers off and then powers back on, this happens immediately. When this happens it powers off my device and then resets it out of bypass mode back to 0.21 amps. As long as I do not allow the device to enter bypass mode I have no problems once it enters bypass it does this repeatedly. Is the Drok designed to shut down below an amp threshold? If so is this something I can change? Any insight into this will be most helpful.  Thank you,

    • Drok January 7, 2021 at 6:51 am - Reply

      Hello Superv900,
      Is it this item?
      Could you pleaste tell us more details about bypass mode? And would you like to show us the problem by video?
      You can offer a video link or send it to
      Best regards,

      • Superv900 January 7, 2021 at 1:20 pm - Reply

        That is the correct Buck module.  I believe I have found my problem.  The source voltage to the Buck module is digitally controlled. When it sees the low current draw of 0.16 amps it assumes the battery is charged and drops the voltage to about a 1 volt which causes the Buck module to shut down, then the source voltage control sees the voltage drop of the shut down and it immediately ramps back up I assume it is thinking that the battery just went dead and starts to charge. I will just have to trick the source into thinking that there is always a need of a charge. Thanks for your response.

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