LM2596 2v-37V 3A Voltage Step Down converter Module Tested/Reviewed

In This video you will see LM2596 Module labelled as 3A is tested with
different voltage input and output.
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Jump to different section of this video by clicking on the time
00:00 Start
01:42 Voltage adjustment test at
05:33 Data sheet viewed
08:00 Tested with 12V input 9V output with at 3A
09:00 Tested with 12V input 9V output with at 2A
10:15 Tested with 12V input 5V output with at 3A
11:10 Tested with 12V input 5V output with at 2.5A
12:26 Tested with 12V input 3.3V output with at 3A
13:30Tested with 12V input 3.3V output with at 2A
View the datasheet for LM2596 Regulator: www.ti.com/lit/ds/symlink/lm25...
Tutorial by Ahmad Shamshiri form Canada
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[@m3chanist]

This is my goto material on the use of this module, your thorough testing in different ranges makes this video reference gold. I've come back to watch it again each time I use one of these just to be sure of it's performance in my targetted load case, brilliant sir.

[@robojax]

Thank you. I am glad you found it useful.

[@prashanthb6521]

All your videos are so helpful, Thanks a lot. I bought 3 of these today. Worked them up to 0.6 amps only, got barely warm.

[@englishrupe01]

Thanks indeed for doing all these tests and all the others that you have done also. They are really great work and help us hobbyists immensely!

[@robojax]

You are welcome. I am glad my work is beneficent.

[@Die-Spezialisten]

Thanks for the test. I got a lot of these converters. There is a large ripple at the output. You can manage it with a filter.

[@alinboon4520]

thankyou so much. I was totally in the dark about what this thing was and why i needed it for my micro motor for my Zguage railway system. you explanation is all i needed. its all working fine now Thanks a lot

[@robojax]

You are welcome.

[@Royd20]

@@robojax What if we give variable or fluctuating DC voltage input range from 12 vdc to 30 vdc amper from 2.2 to 4.22 amperes input of LM2596 Module and set the desirable voltags to 12 volt DC , will the output voltage be constant ?

[@youpattube1]

thanks for the advice about continuing to wind the pot. i had assumed mine was bad.

[@robojax]

You are welcome. This happened to me initially. I even removed the potentiometer and checked it. but the seller told me to rotate it multiple times and it worked

[@MrBrymstond]

I ordered a bunch of these, when they first came out I paid less than $1.00 USD each, but I purchased a bunch of them. I never used them because bigger and better ones came out. These work best if your input is very close to your output. Hooked up to the car battery 13.8v and I need 12v @ 1.5amp I stand a good chance, even 2.0amp maybe with a small heatsink from a Raspberry PI

[@JobinAugustine]

Great video. Thank you for the information that the output voltage just goes unregulated if the input voltage dropped below the desired output voltage. I was looking for that information as my next project make use of that as an idea. :) Thanks again.

[@FluffieWolf]

Thanks! I was testing one for 1st time and it was getting warm (though not hot) powering an esp32 at 5v from 12v. I didn't realise it had an LED until I saw your video, why? Because the Led on mine was mis-soldered from the top pad to the positive side of the capacitor! Testing one without a badly soldered LED and it is much cooler. Worth checking the soldering on these modules.

[@bart99gt]

Hook one of these things up to a scope under load. I've been messing with one trying to adapt it into a bench power supply, and the ripple is just unreal above 100mA or so. Across a 15 ohm load at about 15v (1A), and I was seeing around 300mV p-p ripple. With some filtering I can get it down to about 150mV. This is with a different module that has a real heatsink on the LM2596. I tested it at 2A (30V/15 ohm) and the ripple stayed about the same, but the inductor on the board would start squealing within certain voltage ranges (27-29v). Then would quiet down right at 30V. But it uses the same 4.7uH inductor that yours does. As another person commented, it just needs more inductance for a full 3A.

[@GaryMcKinnonUFO]

Could the ripple affect the readings of analogue sensors ?

[@Prubotics]

This video is very useful to me at the moment. Can't thank enough!

[@robojax]

You're very welcome!

[@VauxhallViva1975]

The LM2596 device IS capable of 3A. This module is sold on the 3A thing, but it is not able to sustain that as you have found out. Not without some changes to the design. However having said that, they are a great little module, and if you are not planning to load it up to 100%, they work very well. The price of these things is so cheap, something has to give, and it is the lack of proper heatsinking for higher output currents. ;) I would not want to push them past 2A - ever. Not unless you WANT a nuclear meltdown. :D Nice video. :)

[@robojax]

You are right. Thank you for the informative comment.

[@AbhishekKumar1902]

I cannot thank you enough for making such an informative video on ymthis module

[@robojax]

You are welcome.

[@VauxhallViva1975]

Robojax's conclusions are all correct, but I still like these modules. They are RATED for 3A, but that does not mean you can actually suck 3A from them(with this design) on a 100% duty-cycle. ;) They work really well as a sporadic PSU running a PTT transmitter or thermal printer, where the load is only present for a short time. They can easily pass the full 3A, but just not continuously. ;) 50/50 on-off duty-cycle for 2A, and 25/75 on-off duty cycle for 3A works though. :) For anything needing 100% load, they need heatsinking and lots of it, as heat is an electronics killer... :p I would not recommend these be used at 100% load for anything over 1A.

[@Royd20]

@@VauxhallViva1975 What if we give variable or fluctuating DC voltage input range from 12 vdc to 30 vdc amper from 2.2 to 4.22 amperes input of LM2596 Module and set the desirable voltags to 12 volt DC , will the output voltage be constant ?

[@VauxhallViva1975]

@@Royd20 Yes, the voltage will remain constant BUT the heat dissipation will vary depending on the input voltage and the output current. As both the input voltage and output current are changing in your example, the voltage should remain constant for low-duty-cycle loads, but the dissipation will be all over the place depending on the input voltage vs output load. It's tricky if you have a varying input voltage and output load. ;) If you mean that you want 12v out, but the input can vary up and down, that is fine. But you still need to calculate the heat dissipation to make sure you don't blow up the regulator. Essentially, the higher the input voltage, the less output current you can suck from the regulator, as the difference is dissipated in heat. Regulators like this are very efficient compared to the older linear ones, but even these need heatsinks if you are trying to suck 100% load from them with much of an input-output voltage difference.. Try to maintain the smallest input-output voltage differential, to get the best results and highest current from the setup. :)

[@Royd20]

@@VauxhallViva1975 What if we give variable or fluctuating DC voltage & ampere input range from 12 vdc to 30 vdc amper from 2.2 to 4.22 amperes input to XL4005, XL4015, XL4016, XL4019 Module and set the desirable voltage to 12 volt DC , will the output voltage be constant ? Which module will be more efficient ? I am getting the AC fluctuating volt from a bike head lamp, so i connected full bridge rectifier so that will be able to power DC led head lamp and Led fog light Below is one example of stepdown module kzbin.info/www/bejne/anq0c4FshN5rgsk He was able to increase the amperes to 9.9 amperes by giving 24 VDC 6 amperes to input getting more amperes Let me know what you think about the above video ?

[@Bianchi77]

Nice video, thanks for sharing it with us, well done :)

[@voiceoftruth1O1]

Thanks for testing.

[@robojax]

You are welcome.

[@PinoyTechTutorials]

Thankyou very much sir, that was very interesting.

[@robojax]

You are very welcome.

[@ertyuiiknbvcx]

One can likely solder on a spiral strip of a canned food can and get better results cheaply :)

[@TheHibener]

Great video. Very informative !. I would like to know about your test load. That looks fancy !

[@robojax]

Thank you. I should have mentioned in the video as "Electronic load" and I have a video on that: kzbin.info/www/bejne/Y5ysaIKqia2XZ5o

[@vnagaravi]

Thanks for the video

[@robojax]

You are welcome. The best thank you for me is to subscribe to my channel. Thank you.

[@lalan8862]

Thanks brodar

[@AbhishekKumar1902]

excellent

[@robojax]

Thank you.

[@benhur9624]

good tests , thanks

[@robojax]

You are welcome. ♥

[@Fahnder99]

At 3V, 3A out, from the efficiency of 73% (cf. datasheet) you know the dissipation must be 27% of 9W = 2,43W. At 12V out, eff is better: 90%. I'd recommend cooling for everything above 1W. And please use a thermometer. They're not expensive and fingers are ... ridiculus ;)

[@robojax]

the first and best sensor. finger no need to pay. You can send me a thermometer. My contact me via robojax.com contact page.

[@pavelbires]

@@robojax yeah but if you break one, you can not buy it (for cheap)

[@pavelbires]

actually you can, dark markets are a miracle

[@GaryMcKinnonUFO]

If you can't touch it for more than a few seconds then it's over 70 degrees C, i've read. I'm using these in a project and they seem fine but i never go over 700mA. Thanks again for your very useful reviews :)

[@robojax]

You are welcome. Thanks for your useful comment.

[@GaryMcKinnonUFO]

@@robojax What's the best way to have a conversation with you, i'm developing an automatic plant watering system and need some advice, i'd gladly pay you for your time ?

[@GaryMcKinnonUFO]

@@robojax I forgot, my email is [e-mail]

[@MMaheshThakur]

thanks

[@robojax]

you are welcome.

[@sataTemplar]

Thank you so much. For a moment I thought I got a damaged device.

[@robojax]

You are welcome. The best thank you for me is to subscribe to my channel. Thanks

[@jhbonarius]

Also: look at the LM2596 datasheet for inductor dimensioning for loads. It seems the LM2596-ADJ requires a ~20uH inductor for 3A loads.

[@robojax]

Yes . The data sheet has pretty everything you need to know snag.gy/AHhRpV.jpg

[@g.s.3389]

@@robojax by the way it is also stated in the datasheet that in order to get 3A output you need a dissipator.

[@tarunarya1780]

I appreciate your video. It would have been helpful to have a table summarising the results, as it was not lear re the time taken to the temperature reaching a certain temperature, at what amps and target voltage so we can tell if it is just related to the current or the difference in source and target valtage.This was said not to criticise but try and be helpful, . Project Farm does this format for power tools etc.

[@mr.dmr.d9348]

Many thanks for letting me know about potentiometer.! I was thinking my converter was faulty. many turns to the left and voltage came down. I needed 3v3 for N64 psu repair .. (:

[@robojax]

You are welcome.

[@MixedGears]

Hmmmm. I have a thought to put this in my testing power supply until I get a proper regulating circuit. With 38V at the input, it is working fine. But then I applied some stress. I set the output voltage to 33V I think the indicating LED is already burning. Then I tried to go all in and I think it burned at 2.5 A No smoke but dead. I think it is designed mainly for lower voltages let say to 24V. and probably 2A max without some proper cooling. In the datasheet are mainly measurements for 3.3V, 5V and 12V no info for higher voltages.

[@robojax]

@Mixed The input can be up to 40V. I just added the datasheet in the description.

[@douglashales3982]

Hey great video, when you buy the LM2596 online via Digikey or other electronics suppliers, I believe it only comes with the IC. Is there anywhere you can get the full module assembled and soldered already or do you always have to do this yourself?

[@robojax]

This is a module and comes ready like that. I have updated the description with link to eBay so you can see the product on sale from different sellers.

[@tolgadabbagh1877]

can you add a third pin to the little voltmeter , i have the same one but couldnt find a video or information about it . thanks .

[@irontronics4707]

Excellent video, I want to ask you something, that test board (right side) did you build it? if yes... can you share how build that test board? or, did you buy it? . I'm very interested to build something like that test board it is too useful. Thanks for the video :D

[@robojax]

You are welcome. NO I did not build it. I bought it.

[@irontronics4707]

Where did you buy it? can you share info? thanks!!

[@robojax]

Just search for LM2596 on ebay and you will see it. here is what I got www.ebay.com/sch/i.html?_nkw=LM2596

[@giuseppechiodi3356]

@@irontronics4707 you can find it here: tinyurl.com/yd5mnzxg

[@BuluBuridSMDA]

I have seen a review of your video about the LM2596 and XL4015 modules. I was thinking about how to stabilize the ic temperature when working full load. Now I have thoughts below, but I want to ask for your personal opinion. According to you : Can ic xl4015 (with the use of constant current 5A) or lm2596 (with the use of constant current 2A) be separated from the default board and then extended pinout the legs ic using a good cable and then attach it to a heatsink that has the fan? For example, it is affixed to an old VGA card fan heatsink where the power to turn it on comes from the input power module. I mean that the 3.42A / 19V (laptop charger) power source is coupled to the IC 7812 input (with a heatsink) then outputs the IC 7812 to the VGA card fan. By the way, in your opinion, which is more accurate in measuring currents using a common digital multimeter or digital volt and ammeter panel? Thank you in advance and greetings from Indonesia.. (^_*)/

[@robojax]

I replied to your other comments in the other dual display module.

[@MahipalYadavmahii]

was planning to use 2596 to power raspberry pi4(official power adapter ratings:5v 3a) from 12v dc in diy nas. but as you reasults showed 2596 is no good......thanks!!!

[@AshiqurRahman]

I have connected this device to 5v mobile charger as input...In the output, while measuring voltage, no matter how much I twist left or right the output always stays 4.4 v

[@robojax]

when the output is not changing, it means the main chip is either dead or there is some disconnection on the PCB path . check it.

[@mustakrakish6614]

Thanks for the video. Would the results be different if I try using it with around 8Volts input and 6volts output?

[@robojax]

No. It would be very close to the test result. You like this meter kzbin.info/www/bejne/Y4bFnYaciqqMY5I

[@abed-itani1983]

what it the different between ( xl4015 vs lm2596 ) as a quality IC component, and the efficiency between them when you make from them a step-down converter. as there a lot of boards DC to DC step down converters use this type of IC (xl4015 or lm2596 )

[@robojax]

XL4015 can handle up to 8A and LM2596 only 3A. I have a video on the other device kzbin.info/www/bejne/d5zFmoKZpbyNr5Y

[@matkokubko123]

Hi all, do not buy this modules from china. They cost around 1Eur because they use some Chinese clone of the LM2596 which runs on 55-75kHz. Original Ti LM2596 cost around 3Eur. You can check the frequency of the switching - original runs on 150kHz. I did test of Chinese clones at specific overload conditions (3A, more than 70 Cdeg) will increase output voltage around 1,2V which can kill everything connected.

[@valdir7426]

can I sustain around 1.8A 7V from 12V without active ventilation? what if add small passive heatsinks on the LM2596?

[@RubenGT]

Thank you for stating that the potentiometer requires several turns prior to responding to voltage change, was wondering if it was not working. 🙏

[@robojax]

You are very welcome. Your subscription will help channel to be found by other. Thank you

[@francoisBonin-phils]

Nice video , is the output completely isolated from the input?

[@robojax]

NO. this is switching power supply. There is an inductor and/or diode.

[@Sopheris]

Very detailed testing, but im missing one thing. You didnt tested it with for example 30V input and 2V output. I wanted to build mini adjustable PSU with my 40V 2A supply from old printer. You think that module will handle it? I was thinking to put thermal pad and aluminium heatsink on bottom of the board, but stil doubt that i could produce 1,5-2A at low voltages.

[@robojax]

no it would not. it can't work with 40V.

[@Sopheris]

Thanks

[@jacksonblack9408]

10:07 I checked my phone :P

[@jhbonarius]

Do you think I could rewire it to make a negative voltage? I have a 24-0-24 balanced circuit for opamps, but need 12-0-12 for an other part of the circuit. I can use one of these to convert 24V to 12V, but I also need to convert -24V to -12V...

[@robojax]

No not possible. Negative voltage regulator has totally different functionality and can not be reversed by wires. it is the chip. there are negative regulator like this www.analog.com/media/en/reference-design-documentation/design-notes/dn1022f.pdf

[@robojax]

and here is dual regulator: www.aliexpress.com/item/20W-5V-6V-9V-10V-12V-15V-24V-Positive-Negative-Dual-Output-Power-Supply-DC-DC/32924044001.html

[@supraman215]

if I set it for 5v output will the output change if I put 12v on it or 24v on it? or will I have to adjust the screw every time to keep the 5v output?

[@robojax]

No. I have shown this at the beginning of test that once you set the output, as long as the output is greater than the input, it will not change.

[@mikejosef2470]

​@@robojaxDon't you mean "as long as the output is less than the input"?

[@gerard9114]

I want to flash a 1.6V LED with a PWM. The PWM is 3V. Is it possible to put a buck converter behind the PWM to control the voltage down?

[@robojax]

Hi, you can use soltuion shown in this video kzbin.info/www/bejne/Z2jZon-sapVri9k the video shows Arduino board is used to generate PWM but you can use your own PWM source to feed into this module and control LED or MOTOR.

[@melplishka5978]

Nice tester , what model is it ?

[@macdudy2424]

which buck converter to use for a constant 2.4 amp current at 5v output, input voltage 12 volts

[@robojax]

There are tones of 5V converter. Just get something like 3A or 4A to be safe.

[@callmart-6347]

Let's say we use it for 24 volt battery and we need 13 volt on out put is it gonna drop the the voltage as the battery is dropping voltage or it stays at 13 volt while battery voltage is coming to 13 volt ? Plz

[@robojax]

سلام علیکم دوست عزیز When you set the output to 13V, the input can be from 30V to 14V and you will get stable 13V. I have shown how much input should be higher than output in order for this to work. موفق باشید. احمد از کانادا

[@undercrackers56]

I am not sure that these tests are really usable. The LM2596 datasheet states that a heatsink is necessary for 3A. Perheps it would have been a better quality test to try this device with 1A, 1.5A and 2A loads with a scope to show the resulting ripple?

[@robojax]

I have not tested the chip. I have tested the module (PCB). This module is used like this you and you can't attache heat sink in it.

[@tornadokat]

The chip has an internal reference voltage of 1.235 volt which is why that (or close to it) is the lowest you can go.

[@robojax]

Thank you.

[@ozranger8506]

thank you! I thought mine was damaged!! I turned a lot with no result. I was about to bin it!

[@robojax]

You are welcome.

[@shreedharhegde]

Output current is constant Or it varies according to the load...? I have set 12v as output voltage..

[@robojax]

Current is always determined by load. Some power supplies can limit it.

[@ImTheDud3]

hey i'm not good at eletronic but just solder it to ac adapter with is 19v-1,75a and i get only 18,6volt out ant its capable 2a to 28v but its allready all the way to max value why i can't get more than 20volt out put ? thanks for ansver

[@robojax]

this is step down converter. Meaning the output voltage will be less than input. So for any input voltage, you will get (at max) a little less then maximum input voltage and then you can adjust it to get very low like 2V.

[@ImTheDud3]

Robojax yes i after this post find out that i have buy wrong one instead stepup i take step down.

[@henryshadowjet]

I was gonna buy this to power a Raspberry Pi that needs 5V4A from 12V (car battery). So basically what you're saying is it won't work?

[@dj_sorra8605]

For this model, is 24v in and 12v out ok for a 12v fan with 0.48mA?

[@robojax]

my friend, I did the test so you see and get the result. so please watch and see .

[@amirulhafiz4969]

Hi wanna ask..can the module support more than one output? I tend to step down the voltage from 12v to 5v for 6 servos.

[@robojax]

Yes it can. it is up to you as many devices as you like. Just do not go above the limit of 2A or 3A I forgot how much. Watch the video.

[@amirulhafiz4969]

@@robojax ive bought it and ive tried it. it can power up to 4 servo. thankyou

[@robojax]

You are welcome.

[@amirulhafiz4969]

@@robojax hi, sorry i have another question. in the beginning, it can support up to 4 servo. after few trials, found that, my step down, doesnt work fine. i got 12v input, step down to 5v, and power up 1 servo, the voltage suddenly drop to 2.27V. when remove the servo, the output voltage back to 5V. servo current only 500mA. is my module burn? also happened to my IR sensor. IR sensor only 20mA. when connected to the module, it drop to 2.27..

[@amirulhafiz4969]

or do you have another way that i can contact you? cause you got the best explaination for now:)

[@tinhvenoidau6642]

Nối với bình acquy 12v , hạ xuống 5v làm sạc dự phòng đc k , nếu bình còn 10v thì điện áp ra có là 5v k ????

[@robojax]

Có, bạn có thể kết nối nó.

[@SR-bq1di]

Does it work on unregulated DC supply coes from solar panel ?

[@robojax]

yes it does as long as the voltage doesn't go above 37V

[@cvkogz]

Is it safe to use like 24v 2A adapter - >> 3v 1.5 A (for little motor FF-180SV-3730)

[@robojax]

I believe the 1.5A is very easy for this. But I have forgotten the exact values. You may like this energy meter kzbin.info/www/bejne/Y4bFnYaciqqMY5I

[@cvkogz]

@@robojax thank you

[@ahmedshamlan1197]

Brother, please, does the circuit heat up when loading anything When I turn on a router of no more than 1 Amp, I find that IACI overheats with Diode and transformers, and with an output capacitor, what causes the problem? Is it natural in itself answer please With problem solving thank you very much

[@robojax]

you know I made this video so people find answers. I have tested with many current and voltage so you find the result somewhere close to what you have and come to conclusion. I just looked at the video and it seems I did not leave such important detail. But your project you always look at Power (watt). The module has 125C junction temperature when you touch it perhaps at 80 or 90 degress C at outside you should be okay. I can't understand this from here. So test it for 24 hours in a safe place away from living room on a concrete away from everything and if it dies, you know it is bad, else you might come to conclusion that it can be trusted. Do your own test.

[@anuragbhandari1838]

can 9V battery be used to as input for 5v output as 9v has not been mention in data sheet?

[@robojax]

we have fixed voltage version and adjustable version. at at page 6 of datasheet www.ti.com/lit/ds/symlink/lm2596.pdf it shows that the input can be 4.5V to 40V.

[@royireland1127]

Can you remove the little blue LED? I need to operate it in the dark, and removal of the LED might lower the operating current a bit (30 ma?). I need to operate from batteries, and minimizing idle current is important.

[@robojax]

the LED uses about 10mA. Yes you should be able to remove it.

[@royireland1127]

@@robojax Thanks for a prompt and proper reply. For 10 ma it may not be worth the bother but for removing excessive blue light, I will give it a try.

[@jhbonarius]

Of course you are

[@tugasakhirhendro9965]

can i use it when the input of the module is 12V 10A ?

[@robojax]

the 10A doesn't matter. Yes you can with 12V.

[@milo7442]

marhaba kefak ahmad , ramdan kareem i have a question the moment i connected this model to power source (36v battery power pack) the LM2596S exploded i already tried 3 different ones and same thing keeps happening any ideas or suggestion on what I'm doing wrong Thank you!

[@robojax]

Assalamu alaikum, Ramadan Kareem. Either you connect the + and - incorrectly. or when you said explode, the actual black chip or the capacitor? if the chip explodes, then wiring is wrong. if capacitor, then read the voltage on the capacitor. make sure not to connect higher than what is written. you might read 30V or 36V. just check it.

[@milo7442]

@@robojax i was wiring it wrong 😂everything is working as it should now thank you for the response 😀

[@patakiattila8970]

Robojax, can I use this for powering Arduino mega from 12V power supply to step down to 9v? 3A means for output right?

[@robojax]

Yes you can. it is way more powerful than what you need.

[@patakiattila8970]

@@robojax thank you!!!

[@robojax]

you are welcome.

[@patakiattila8970]

@@robojax still didn't think about this project? I would wrote to you down and send via e-mail and you can still say no. ? So what do you say?

[@robojax]

I am sorry. I am not following. What project?

[@mjyanimations1062]

Plz tell me if I can convert 5v dc to 12v dc and if yes, how? I tried to turn the thing clockwise with a cordless drill but the max I got is 4.85 v dc.

[@robojax]

I made the video to explain that. If you follow the video and don't get the result, either have different module or your module is defective.

[@englishrupe01]

No....you cannot get a voltage higher than the input with a buck converter. You would need a boost converter. This is a buck. There are many cheap boosters available however.

[@mjyanimations1062]

englishrupe01 thanks. I bought the wrong inverter

[@gearup603]

is it ok to input 60v by changing input capacitor voltage to 100v?

[@robojax]

NO. Read the input capacitors voltage. They will explode if you connect them to higher voltage.

[@renatomoreira5594]

Hello so this card is used to replace the ubec installed in my model 30cc petrol?

[@robojax]

You would have find out the amount of current , Amper and then see if it is less than what is shown in my test, then use it

[@renatomoreira5594]

@@robojax Here I use 2 ubecs of 3 amps in parallel and it works well but the quality of the ubecs are not good here and I thought about using 2 step down plates in regular parallel to the 2 would it work? To replace the ubec? 3 ampere

[@PeniZzZ95]

Is it possible to connect the device with an LED stripe which current is max. 5A?

[@robojax]

The amount of current is shown and forgot how much it was but LED or motors are load and yes it can be used to power any load within the voltage and current that I tested

[@PeniZzZ95]

From where the power dissipation comes from? The chip gets hot because of that. Is it because of the switch inside the LM2596? But then for the calculation you need the resistance of the switching device, probably mostet ? I couldn’t find anything in the datasheet

[@BobCorey]

If I use a 12 volt battery to get 8 volts output, would this increase the Amphours of the battery? Also how much would be my loss...?

[@robojax]

this is exactly why I made the video. I have tested it with different voltage. so you have to watch and come to conclusion.

[@BobCorey]

@@robojax Ι watched the whole video! But I didn't understand what would be the benefit if there is any in Amphours, right now I am doing a test of powering the device with different batteries and/or using my convertor-regulator. Some of my results: 2 cells 5000mAh regulated to 8.4v = 3 hours of use 3 cells 1800mAh regulated to 12v = 1.5 hours of use 3 cells 1800mAh no regulation = Coming soon...

[@dejcalibuso5407]

How much ampere input can handle this module sir? Can be handle 15amp?

[@robojax]

You have not subscribed. I will reply to all Subscriber's 🔔 questions. So make sure to Subscribe.😊 I have answered this question in the video.

[@gurumultitask9979]

I made an ultrasonic sensor project with Arduino Uno and I have powered 5v 3a from the step down module connected to the 12v 3a adapter. what happens is that my ultrasonic sensor is always on, normally the sensor will on if the triger is on. what's the problem?

[@robojax]

it has nothing to do with the power module. Ultrasonic sensor will always produce a value . I assume when say it is ON, it reads some value. I would suggest using it with Arduino and power it up from Arduino's 5V and see how it behaves.

[@gurumultitask9979]

@@robojax Thanks Robo I have done 5v 3a which is right inside the arduino board now

[@robojax]

Arduino needs less than 500mA power. 3A is 3000mA and 6 times higher. But it will not harm Arduino.

[@gurumultitask9979]

@@robojax I can reduce the ampere with the step down ampere module

[@AsifAli-pt1tr]

Can we adjust the output current (amp)??

[@robojax]

when you can adjust the current, it is called Constant Current or CC. This doesn't have it. the module what has it will have 2 potentiometer.

[@AsifAli-pt1tr]

@@robojax thanks reply of my stupid question .

[@robojax]

you are welcome. no question is stupid. It was very important question.

[@tawfde1000]

Thank you i thout that meins is demaged

[@robojax]

You are welcome.

[@user-do9le6lc8y]

can I use the 5v output voltage from the converter to safely charge my phone?

[@robojax]

yes. Be careful with the polarity. Your phone has charge control and it just need 5V which this can provide.

[@xadion6866]

@@robojax can i get my laptop adapter-- which is at 30V, to power the display that i salvaged from my broken laptop?

[@robojax]

Yes I believe you can. I don't remember what is exactly is the input maximum voltage. so check that out first in the video and then if it is not exceeding the maximum use it.

[@xadion6866]

@@robojax i will try it out. thank you.

[@king24km]

Can i use this as a charger for phone? My phone required 5volt 2A,

[@robojax]

I will reply to all subscriber's 🔔 questions. So make sure to subscribe.😊

[@anasaliyarkunju6746]

This product is used for charge lithium ion battery pack with bms board of 22 volt 12 18 21 24 volt with bms board

[@aniketsawant8498]

If i connect 12v 5amps can i get 5v output? How many amps at output?

[@robojax]

if efficiency is 100%, then Pin=Pout. P is power P=IV, I is current in Ampere. V is voltage. So input P is P=IV=12(5)=60W and if you want 5V output then I=P÷V=60÷5=12 so you can get 12A. but you can't find 100% efficient module. you will lose 10 to 20% energy as heat. Now with this module, you have to see how much current this can handle. it is rated at maximum of 3A. I don't remember. so you gotta watch it to see.

[@thewondersofscience9740]

Can it increases voltage, I mean more than input voltage.

[@robojax]

that type of converter is called "boost converter" and I have so many videos on that. Search my channel . Here is how to find Specific KZbin Video in a channel bit.ly/findKZbinVideo

[@dj_sorra8605]

From 3V can you get to 6v with it?

[@robojax]

Yes

[@monipilli5425]

I AM USING LM 2596 IC BUCK CONVERTER , I NEED TO REDUCE SOLAR PANEL 22V TO 12V....BUT NOW INPUT AND OUT PUT SAME VOLT....PRESET ADJUST ..BUT NO CHANGES OUT PUT VOLT ...WHAT IS THE REASON ....

[@robojax]

when output and input is the same, the converter power chip is dead.

[@avnikociaj68]

@Robojax, does this really cost 1€?? Please I need help to buy!

[@robojax]

Yes. I have provided the link in the description of video. Here 2 pieces for US$1. www.ebay.com/itm/272420115300

[@gertikociaj]

Robojax woow how it is so cheap? (Edit)Do you think it is suitable to use to power my 9w speakers from my pc power supply, converting from 12 to 9v with this?

[@robojax]

The modules are made cheap in China. If you wanted fast it would be $10 to $15 but this with this price it will take 30 to 70 days to arrive. If you want to know if this work for your application, watch the video I have tested it.

[@gertikociaj]

Robojax I see. Well thanks a lot for the replay!

[@robojax]

You are welcome.

[@absurdywokonas6695]

Chaotic it...

[@nahidhassan6422]

is it safe to put 12v 3a input and 5v output

[@robojax]

Yes you can but how much current you need at output. for example if you have 10W load, then P=IV, I = P ÷ V, --> I=10÷5=2A I have updated the description of this video so you can click and view directly desired test.

[@nahidhassan6422]

Robojax thanks 😀

[@BavarianM]

My module failed I input 4v and it outputs 66! And I can't adjust the darn thing

[@HappyTinfoilCat]

I've never seen someone jam a metal screwdriver into a power circuit as much as you do.

[@robojax]

Bingo! you found one. Good for you. (i did not get it if it good or bad. LOL)

[@johnney87]

D1 Is not a zener diode, 1N5824 would be a Schottky Diode, why would you need a zener on the output of a regulator? Its the flyback diode for the Inductor so it doesn't blow up your Regulator when you disconnect the load. DO NOT put a zener in its place. Also in the data sheet you can use it as an inverting regulator to generate negative voltage with a common ground.

[@robojax]

Thank you for mentioned that. I have looked the symbol and it seems similar to zener diode. I fixed the video.

[@DjJoeEmeric]

question how can i solve the problem , hope you will understand ... :) i have one power source , 5 step down converter and 5 li ion batterries How can i use the same power source to power all 5 converter to charge every batteries what are connected in serial ? +/-+/-+/-+/-+/-

[@robojax]

Get five cell battery charger. All chargers work exactly they way you described it.

[@princbill]

input Amp and output Ampere always same, only voltage change on theses typ converter. You don't show input Amp?

[@robojax]

No. Input and out are ALWAYS different. This was done a while a ago where I did not have equipment. Please watch the latest video here you will see the input and out current kzbin.info/www/bejne/r6G5iWelmsd5fdE

[@princbill]

@@robojax Ok thanks

[@rogerschmid8612]

i have rather bad experience, first they getting hot, 12V input 5V output 1A .. lifetime is about 3-5 month until they start heating extremely up and die i used arround 40 units in projects .. they are all replaced now with xl4015 based converters which stay much cooler, lets see how there lifespan is. btw, RFI is much lower as well, of corse depends on the implementation ...but....

[@robojax]

thank you for sharing. I don't like them either. They need huge heat sink. The way they are sold will not last as you said.

[@jensschroder8214]

First, there is a 48uH Inductor, the datasheet say 33uH. 2. the input cap is only 100uF, in the datasheet is 680uF. 3. there is no heatsink on the board, only a very litle copper on the tab. And last the quality of the inductor is not great. Over all 2A are fine.

[@robojax]

the value for inductor is the typical application and you can change it.

[@Cabeza492]

HELP! My OUT LED is red, and the potentiometer is doing nothing!

[@robojax]

I don't have the module in hand, when is the LED ON? as soon as you turn it ON or at certain condition it turns ON?

[@Cabeza492]

Robojax the red light turns as soon as I connect it. It works fine but I've seen that all of the modules presented on youtube have blue light.

[@robojax]

I dont' know then. these modules are produces in basement of homes and have no single manufacturer. So anyone can put any components and change the design

[@shashanktg08]

Can any one tell me what is The maximum input current of this module

[@robojax]

Input current is 15% more than the output. Just add it. We have about 15% losses in this module.

[@shashanktg08]

My input is is 6amps 12v can I connect to this module as input and get constant 5v 3amp output

[@MrKlaygomes]

Mine always blow up with 9v input and 3.3v output :(

[@robojax]

how much current do you draw from this?

[@poerwojadoel7992]

hi mr Robojax meet again i want to ask how arduino is coupled with LM2596 2v-37V module and relay. with two buttons to control push pull solenoids. the first button to press every 1x in 1x punch hit The second button presses 1x solenoid hitting automatically / keep beating please teach me how to install it with program code warold arduinonya because i need voltage. thank you

[@robojax]

Sorry, what is 1x in 1x punch? why you need the voltage regulator LM2596? please post diagram or plan of your work here snag.gy/ and share the link back by clicking on "Reply"

[@poerwojadoel7992]

sorry I mean 1x = one click . and not lm2596 but xl6009 or MT3608. tank

[@robojax]

okay, you have to draw a flow chart like this snag.gy/VsfTm5.jpg and post it. Then I have to see if I can do it. without a flow chart, it would be very hard to ask or work with other people.

[@poerwojadoel7992]

Mr. Robojax. I thank you, because I saw your video "How to use Relay 5V with Arduino to turn the AC light on and off" By raising the automatic ups it runs smoothly. Just to add one button can not yet, my desire when the massage button is longer the desire lights turn on and off automatically, until I massage it again. because I have not mastered the arduino program yet. Ease You can provide solutions. thank you

[@robojax]

I have updated the code in this page which is for Push ON and Push off : goo.gl/zTPsdh Use the 2nd code at the bottom. I will try to help you if I can more.

[@astrogerard]

This review could have been nice but unfortunately the verdict "bad" has given many times which is unfair. The datasheet and even most of the descriptions on aliexpres/baggood/amazon tells you to use a heatsink or other form of cooling. Sorry, but you could have done a better review by sticking on a heatsink and test again.

[@robojax]

The datasheet suggest using heat sink. This design is already done. Installing heat sink is very hard if not impossible. So the review is on this module as it is sold.

[@rishigondiya689]

How much input current require to give 3A output

[@robojax]

I did not provide it but I have noticed that these converters have about 90% efficiency which is 10% loss. So they need 10% extra power at input. for 9V and 3A output 9V x3A=27W, add 10% to it would be 1.1x27 =29.7W. Now if you need to get this power from 12V input, then 29.7W÷12V =2.48A at input.

[@user-zd4hb9js6h]

I am an Egyptian Arab Sunni Muslim Welcome, brother Don't you think that lm2577 has a high efficiency and better than lm2596 ?????

[@robojax]

Welcome to Robojax. LM2577 is step-up converter www.ti.com/lit/ds/symlink/lm2577.pdf while LM2596 is Step-down converter www.ti.com/lit/ds/symlink/lm2596.pdf and each has different efficiency characteristics. So we can't compare them.