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dorhea lm2596 dc-dc buck converter step-down regulator 4.0-40v to 1.25-37v dc 36v to 24v to 12v to 5v volt power supply module with led voltmeter display compatible with car motor buck logo

Dorhea LM2596 DC-DC Buck Converter Step-Down Regulator 4.0-40V To 1.25-37V DC 36V To 24V To 12V To 5V Volt Power Supply Module With LED Voltmeter Display Compatible With Car Motor Buck Review

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Revainrating 3.5 out of 5  
Rating 
3.5
📺 Analog-to-Digital (DTV) Converters, 📺 Television & Video

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img 1 attached to Dorhea LM2596 DC-DC Buck Converter Step-Down Regulator 4.0-40V To 1.25-37V DC 36V To 24V To 12V To 5V Volt Power Supply Module With LED Voltmeter Display Compatible With Car Motor Buck
img 2 attached to Dorhea LM2596 DC-DC Buck Converter Step-Down Regulator 4.0-40V To 1.25-37V DC 36V To 24V To 12V To 5V Volt Power Supply Module With LED Voltmeter Display Compatible With Car Motor Buck
img 3 attached to Dorhea LM2596 DC-DC Buck Converter Step-Down Regulator 4.0-40V To 1.25-37V DC 36V To 24V To 12V To 5V Volt Power Supply Module With LED Voltmeter Display Compatible With Car Motor Buck
img 4 attached to Dorhea LM2596 DC-DC Buck Converter Step-Down Regulator 4.0-40V To 1.25-37V DC 36V To 24V To 12V To 5V Volt Power Supply Module With LED Voltmeter Display Compatible With Car Motor Buck

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img 5 attached to Dorhea LM2596 DC-DC Buck Converter Step-Down Regulator 4.0-40V To 1.25-37V DC 36V To 24V To 12V To 5V Volt Power Supply Module With LED Voltmeter Display Compatible With Car Motor Buck
img 6 attached to Dorhea LM2596 DC-DC Buck Converter Step-Down Regulator 4.0-40V To 1.25-37V DC 36V To 24V To 12V To 5V Volt Power Supply Module With LED Voltmeter Display Compatible With Car Motor Buck
img 7 attached to Dorhea LM2596 DC-DC Buck Converter Step-Down Regulator 4.0-40V To 1.25-37V DC 36V To 24V To 12V To 5V Volt Power Supply Module With LED Voltmeter Display Compatible With Car Motor Buck
img 8 attached to Dorhea LM2596 DC-DC Buck Converter Step-Down Regulator 4.0-40V To 1.25-37V DC 36V To 24V To 12V To 5V Volt Power Supply Module With LED Voltmeter Display Compatible With Car Motor Buck

Details

BrandDORHEA
ColorLM2596 LED
Item Weight3.98 Ounces
Output Voltage5 Volts

Description of Dorhea LM2596 DC-DC Buck Converter Step-Down Regulator 4.0-40V To 1.25-37V DC 36V To 24V To 12V To 5V Volt Power Supply Module With LED Voltmeter Display Compatible With Car Motor Buck

LM2596 buck converter stably output, voltage conversion efficiency is up to 96%. The output voltage is 1.25V-37V (continuously adjustable, the input voltage must be 1V higher than the output voltage),the output current is 2A (normal and stable), the maximum is 3A. The digital can be turn on or off, to show input or output voltage. With advanced voltage microprocessor, self calibration, the voltmeter error±0.1V, the input voltage is DC 0~40V, (Note: To ensure the accuracy of the voltmeter, please ensure that the input voltage is above 4V). NOTE: This is a buck module. The input and output connectors cannot be reversed. The input voltage must be higher than the output voltage. A radiator is required for long-term work above 2A/15W. When using it for the first time, it is necessary to turn the potentiometer counterclockwise more than 10 times. Press the button next to voltmeter to test input voltage or output voltage. Green LED lights on when testing output voltage; red LED lights on when testing input voltage.Press the button for 1 to 4 seconds, voltmeter would be shut off when releasing your hands; the voltmeter is very accurate. Analog control: using a mini screwdriver to increase or decrease output voltage by adjusting the screw, clockwise to step up voltage and counterclockwise to step down voltage.

Reviews

Global ratings 16
  • 5
    6
  • 4
    5
  • 3
    0
  • 2
    2
  • 1
    3

Type of review

Revainrating 4 out of 5

Voltage and current and full charge indicator

Voltage and current and full charge indicator. Main point I got these was for the current adjustment, to turn down for less heat on projects and testing works good. Form factors a bit large wish there was a smaller unit size is every thing when DIY projects. Also going to test if the full charge indictor stops the voltage flow for charging batteries ( would like to be able to walk away for coffee or other things and not have to worry)If so this will be worth the $

Pros
  • Read instructions online first. Easy to break if you don’t. That’s not the mfg fault.
Cons
  • Two out of four were faulty in thst displays did not work correctly. Seller, please send me new ones.

Revainrating 1 out of 5

48volt MAX for my opinion

These are either miss labelled (not really the 'HVS' version) or the description is just wrong. I tested one with 12 volt input - worked just fine. Then tested it on a battery with 47.3 volts - worked fine. Then tested it on a battery with 50.3 volts and it blew immediately. Vendor needs to re-edit the description where it says, "4.5-53V." That is just wrong.Addendum - in all honesty, I posted the question about 54 volts after I ordered these things and Cbas responded with a terse "no". But…

Pros
  • Works as expected... No instructions included but easy to figure out
Cons
  • May not be compatible with certain types of batteries

Revainrating 2 out of 5

Maybe these work for lower voltages but there's a reason other sellers de-rate input voltage.

I intended to add a USB port & phone charger to my 48v Ebike, which outputs around 51vdc when fully charged. After exploding the first one after properly wiring on the ebike, I proceeded to slow-kill the remaining units on a benchtop power supply. Even with inputs as low as 40v, this simple task of stepping down voltage to 5v is problematic. There's aren't a lot of variables at play here: Wire input voltage, wire output voltage, adjust potentiometer. So within that useage scenario, I have…

Pros
  • Just what I was looking for and at a fantastic price too. Easy to hook up and works great.
Cons
  • Can create noise interference in some applications

Revainrating 1 out of 5

Faulty boards good for me

Every board shipped to me was faulty. None of them are sleeved from one side to the other, not on the inputs or the outputs. How anyone got these boards working is simply amazing. Hence the one-star review. Maybe the vendor is unaware of this?

Pros
  • Worked as expected and they have not died yet. Good deal.
Cons
  • May produce a lot of heat

Revainrating 5 out of 5

I work a lot with 48vdc batteries and this model has 65V caps on the input.

This makes a great power supply for devices powered directly from a 48vdc battery. The input caps are able to withstand normal battery charge conditions. It may not do well if used with alternator charging with risk of charger load dumps.

Pros
  • Cost-effective
Cons
  • Requires additional equipment to mount in some applications

Revainrating 2 out of 5

Partially faulty- unable to set current limit

I got a package of 5 and was not able to set the current limit on any of them. I adjusted the current set potentiometer from one extreme to the other, but the short circuit current remained stuck at 2.5+ Amps. Can not be used for battery charging, but only as variable voltage power supplies. Can't argue with a 4.5 star rating - maybe I just got some from a bad batch.?

Pros
  • LM2596 buck converter stably output, voltage conversion efficiency is up to 96%. The output voltage is 1.25V-37V (continuously adjustable, the input voltage must be 1V higher than the output voltage),the output current is 2A (normal and stable), the maximum is 3A.
Cons
  • May not be suitable for use with sensitive electronics

Revainrating 4 out of 5

Great Bang for the "Buck "! Only needed one, but, ore for later.

Easy to set-up and adjust. Output seems stable so far. Found a case for it on Thingiverse to 3D Print and isolate the bottom from incidental contact.Would definitely buy again, but, I only needed one for now, so I have plenty to last. Great Value.

Pros
  • I liked the size and the display to set the correct display
Cons
  • Not suitable for high-power applications

Revainrating 5 out of 5

Seems to work as advertised

I'm using a couple of these to derive 5 volts from 10S lithium packs (42-43V fully charged), and they seem to work.I'm not using the full rated current but I did test one just to check, and they do seem to limit output current rather than self-destruct.Some reviews have mentioned these exploding at less than their rated voltage. I haven't seen that with this batch, I tested several and they perform to spec. Not sure where the manufacturer sources their ICs, there may be variation among…

Pros
  • Analog control: using a mini screwdriver to increase or decrease output voltage by adjusting the screw, clockwise to step up voltage and counterclockwise to step down voltage.
Cons
  • Voltage meter may not be accurate

Revainrating 5 out of 5

Accurate and stable

They work great, as the input voltage fluctuates from under 12 volts to over 14 volts the output stays at 5.25 +/- 0.03 volts.

Pros
  • NOTE: This is a buck module. The input and output connectors cannot be reversed. The input voltage must be higher than the output voltage. A radiator is required for long-term work above 2A/15W. When using it for the first time, it is necessary to turn the potentiometer counterclockwise more than 10 times.
Cons
  • Can be difficult to troubleshoot if issues arise

Revainrating 1 out of 5

Worthless, can't hold voltage and current.

Using to power a raspberry pi. Constant undervoltage warnings when tuned to 5.1 volts as required, or even when tuned to 5.25 volts which is USB rated maximum. Source power supply is 24 volts at 350w (15 amps) so that's more than enough current. Will try adding capacitors but probably just gonna keep using external power so I don't ruin my computer.

Pros
  • With its small, portable design, the converter is convenient and easy to use in a variety of settings
Cons
  • May not be as efficient as other step-down regulators on the market

Revainrating 5 out of 5

Mostly great best in my review

Working well so far. If I have one critique it would be there's no easy way to keep the display turned off. It's not documented, but a medium long press on button will turn display off. However, if power is removed, display comes back on when it's restored. Annoying. Still, inexpensive, accurate, and works well otherwise!

Pros
  • User-friendly
Cons
  • Can be expensive compared to other similar products

Revainrating 5 out of 5

Worked great arrived quick

Each come individually wrapped then group together into one big bag. Used it on my Ender 3v2 in this nice housing I printed. using it for 24 V in converting to 12 V out.

Pros
  • Very good quality with competitive price
Cons
  • Requires technical expertise to install and use

Revainrating 4 out of 5

Output caps rated at 35V, not 50V as shown

Input cap is 63V and chip is a HV part, so other than the output cap rating, these are likely fine with a reduced output voltage range.

Pros
  • Efficient energy use
Cons
  • Cannot handle sudden changes in input voltage

Revainrating 4 out of 5

Good overall but voltage drops with increased current output

EE here ordered LM2596LED, the device voltmeter and output voltage drops as load current increases. The problem is the feedback connection is not connected directly to the output pad (but instead is back where the inductor is). Output appears to have a 0.3 ohm drop which translates to 14.5V dropping to 14.2V when loaded with 1 amp (more current will have an even greater drop, the effect is linear).The meter appears to be accurate (19V in reported as 18.9V). FYI/instructions: pressing the button

Pros
  • Great little converter. Quick delivery.Just what I needed.
Cons
  • Voltage output may fluctuate under load

Revainrating 5 out of 5

Does its job very well.

Excellent product . Using it to lower 40 DC volts to 12 DC volts. I let it run for a whole day to see if the voltage was maintained. It did so excellently.

Pros
  • The digital can be turn on or off, to show input or output voltage. With advanced voltage microprocessor, self calibration, the voltmeter error±0.1V, the input voltage is DC 0~40V, (Note: To ensure the accuracy of the voltmeter, please ensure that the input voltage is above 4V).
Cons
  • Can be sensitive to input voltage fluctuations

Revainrating 4 out of 5

Nice bang for the "buck " converter

Nice compact package. The input and output holes are not plated through so you need to solder both sides. May require frequent calibration to ensure accuracy.

Pros
  • The Dorhea LM2596 DC-DC Buck Converter is built to withstand wear and tear, ensuring long-lasting use even in harsh conditions
Cons
  • May require frequent calibration to ensure accuracy