DC CC 9A 280W Step Down Buck Converter 7-40V To 1.2-35V XL4016 Module (tested under 12V)

In this video you will see the 9A 280W DC buck converter being used and tested under different current and voltage condition.
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Download resources for this module: robojax.com/L/?id=297
The following test have been performed:
input: 12V
00:00 Start
00:30 Introduction
02:17 Output voltage setting
04:15 Output 9V at 9A watch it at
-Output 9V at 8.5A,
-Output 9V at 8A
07:44 Output 5V at 9A
-Output 5V at 8.5A,
-Output 5V at 8A
08:52 Output 3.3V at 9A
-Output 3.3V at 8.5A,
-Output 3.3V at 8A
Tutorial by Ahmad Shamshiri form Canada
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[@AhmetOmerOzgen]

I needed this for 5V 4A. Works well with 6.4V SLA battery. Voltage is very stable. I hope it doesn't get over heated at 4A

[@andriandri3938]

Thank you for measurements! I got one module thanks to your video, much better than LM2596! I use it in the car, so 12V testing is just perfect.

[@robojax]

You are welcome.

[@anwin85alon]

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[@planker]

Like. I'm using one today on a Ryobi 18v One+ charger. 2nd build, this time with a 24v xfmr stepped down to 20.5v using the XL4016. I tried step up with a small 12v xfmr but could only get about 90ma. Your video gives me confidence, I hope I don't die.

[@anwin85alon]

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[@anythingunderthesun9930]

Great videos! Please keep posting these kind of videos. You are a great help for us DIYers. Thanks

[@anwin85alon]

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[@jonnewcomb]

Hi, Thanks for taking time to put these modules under test. This is very useful 'real world' information that can't be found on the datasheet. In future, may I suggest adding these very common use cases: in=24V out=12V, (Optionally 5V and 3V3?) in=12V out=5V, (Optionally 3V3?) in=5V out=3V3 I find them less efficient at the higher input voltages.. Good luck..

[@robojax]

Hi, You are welcome. Thank you for your comment. I am taking note the suggestions and will sure consider it in the future videos.

[@anwin85alon]

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[@dogeeatsveggies]

simple, easy to understand even for a noob like me, really inspiring, i wanna be like you someday.

[@robojax]

Thank you. Sure you will and you will be better. Good luck.

[@anwin85alon]

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[@blueprint1706]

I got one of this from china, and subjected it to 38 volts dc supply, and within seconds two capacitors from the input side blew up. Turns out they were rated at 35 V - 1000 microfarads. I noted the outgoing capacitors were rated at 50 Volts 470 microfarads. So I figured they must have been swaped by mistake. I changed the out going capacitors be the input capacitors and replaced the blown 35 volts capacitors. Works out great now. handling upto 42 volts input.

[@robojax]

Wow. Very interesting. Each product is supposed to be checked before shipped. This shows how quality control (QC) is very low in most Chinese manufacturers. I am glad you figured it out. Smart :-)

[@blueprint1706]

Thanks. I learnt something from that and that is not to assume the basics like visual inspections before putting them into use or even testing. It's good what you do, you give us a good head start so we know what to expect.

[@robojax]

You are welcome. I am glad my work is useful for humanity.

[@STONEDay]

Got one from China and it had loose solder points that caused strange operation. Also had one bad screw terminal.

[@arrevunella]

Thanks bro, I bought one some days ago but it come with a crushed capacitor, so I thought it would be better to replace it before connecting the module to the voltage (I still have to replace it) I read your comment and then comparing my module with that of the video, I noticed that the capacitors are inverted also in mine converter.

[@dragan3290]

I just got mine in the mail and used an 18 volt battery stepped down to 12.8 volts at 5 amps and i can't get more than 1.6 amps. So its not 300 watt but more like 20 watt! Oh well time to modify! Cheers from Australia subbed and liked 👍

[@MisterKaen]

Thank you. I just bought 2 of them . Now I know how to use it

[@robojax]

Good to hear that. you are welcome.

[@anwin85alon]

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[@keconsipsip]

that stamp was really shocking

[@pieceofpotato7883]

ikr, i thought there's something blew up

[@ElectronicsGate]

Please do not use that stamp effect

[@Nickscassera]

@@pieceofpotato7883 same lmao

[@samindaperamuna6392]

And annoying

[@anwin85alon]

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[@herbertpayson]

Thanks for this review. Now I know how this device works. Keep it up.

[@robojax]

You are welcome.

[@abidsinger2018]

Herbert payson how it works plz tell me in details

[@anwin85alon]

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[@fernandorubio9028]

Thanks, I just was looking for input 12v and output 3v3 at 9A. Now I realize that this thing can handle 7.5A at max.

[@robojax]

You are welcome.

[@Petardozord]

It can power 6 x mg995 servos and arduino at once - 5v, 9.33 amps is the max which i had on my multimeter. Is that real? Idk it's cheap model of multimeter - dt9205. But for sure it can deliver power for 6 servos and they can turn at high speed, while two of them were hanging on cables attached to 3rd one. And everything worked like dream. So i cna suggest it for robotic arm.etc.

[@muppetpaster]

It CAN handle 9A but limit inrush current.....

[@anwin85alon]

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[@andrimastirta4736]

Nice video, so I can consider to buy this module👍

[@anwin85alon]

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[@Rajalakshmi2]

My input is 12V 100Ah battery, can i select output as 12v & current as 7Ah , it is possible to work?

[@cyberbeast1789]

Good day sir! I would like to ask if I can use this on my 3pcs 12dc fan 15watts each with Direct to solar PV set up? Currently my set up is 100w solar panel and 3a mini buck converter each fan between solar panel. Am planning to use this DC CC 9A 280W Step Down Buck Converter for my 3 12vd fan instead of 3 3a mini buck converter. Will it work?

[@SKElectronics]

great video.

[@danyhakson1010]

Can i use this converter to run 12v 7A water pump continuously 7 hours? The input sourse is 24V 130Ah battery.

[@routadu]

Clean video and to the point Great I believe it can handle 7A at 12v output Let's see Can you make a video using this to make lab bench power supply

[@robojax]

Thank you. I have that in mind. Got very busy with work and school. I hope I get time to make one.

[@anwin85alon]

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[@richardnanis]

For more than 7 Amps (input or output) you should provide extra fan cooling! But 8 Amps will be the absolut maximum at lower voltage difference. I use many of these modules for diy lab power supplies - powered by old laptop PSUs - works great so far.

[@Matthew07080]

Yeah I don't think he has enough power going into it

[@louptriste493]

J'ai ce module et je n'arrive pas à régler l'intensité elle est en rapport avec la charge c'est tout il l'est impossible de la régler je voulais l'utiliser comme chargeur lithium dans ma voiture entré 14 volts sortie 16.8 sous environ 5a comment faire ? Merci

[@84ggo84]

ty nice test

[@robojax]

you are welcome.

[@webslinger2011]

Would it work on a raspberry pi3 with a 10inch touch screen? I tried 2 pcs Lm2596 to convert 28v dc to 12v and 5v respectively. Saw the voltage jumps for a split second. The video board can power the pi thru usb.

[@robojax]

Raspberry pi3 needs way less power. this is very powerful. My test showed this module is very stable with under 6A. Raspberry pi need less than 1A and the screen might need another 1 or 2 A. So you have 3 times more power.

[@webslinger2011]

Robojax I'm making a diy 10inch touchscreen raspad using my 24v scooter battery. Had some problems with LM2985's (was supposed to handle between 2~3 amps with heatsink) but it's not able to. I might just get one of these.

[@robojax]

Yes this should work.

[@MTechOver9000]

Great video! I have a question, I have several laptop/tv/printer chargers lying around (12 to 36V). What module do you recommend for me to turn it into a sort of bench power supply? Requirements are that it should be cheap, capable of handling up to say 5A, thanks!

[@robojax]

I don't know specifically which will have more power. But you can read the current rate as amper or power as watt. The higher the power, the larger the size of power adapter. So you need to multiply your required voltage by 5A and whatever power you got, just add 10% to 15% to it and select the adapter that is equal or higher than Power+10%Power.

[@MTechOver9000]

Robojax thanks for the reply. Do you have a recommendation for a buck converter I should use?

[@robojax]

There are so many potions. This module would be the best. But if you pick exact 5A, it will not work because it will give you 5A under strict condition. So pick something 2 or 3A higher. eBay is your best search option.

[@hsh_fpv]

Many thanks ❤️❤️❤️

[@robojax]

You're welcome 😊

[@edmundbajenting1182]

im newbie with in times of power supply .. my source is 12 v (4 amp) = my device is 6 volts.. (what if my device need 3 amp to work) soo do i have to adjust the power supply ampire more than 3 amp ("5 amp")? or let it be zero..? it will just automatically ? i notice u didn't adjust the ampire adjuster in power supply.

[@robojax]

Ampere is the current. If you have a drive that works with 10V 1A, You can connect it to 10V 1000A and that is fine because your device will draw only 1A. So the current is always determined by the load and not by the power supply. Your power supply should "supply" enough for the load. If Your power supply can supply more that is excess. But no harm.

[@trickyriky1]

Thanks for the review, but have you done any stress tests by any chance? I am using 1 with up to 30V input (7s lithium battery) for 12V output to power a PC with a picopsu at 3-4A. It works but gets hot so i'm concerned about leaving it on over night. It would be good to know how it would hold up at say 4-5A over a week with temperatures.

[@robojax]

You are welcome. I did test to exactly answer that questions. You should come to conclusion from the test I did. I can't say because there are many factors that causes the device to overheat including location of the device and how good ventilation it has and other factors.

[@luxury_bahrain3909]

Thank you so much for your time

[@robojax]

You are welcome. Please subscribe. I appreciate it and helps my channel grow. Thank you

[@anwin85alon]

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[@TocsiCS]

I'm sorry for being a newbie. But what exactly it means, when the LED changes to red? Also, do you think I could find shorts in a circuit with this, like it was a normal bench PSU?

[@robojax]

the RED LED means that your load is drawing to the maximum set (current limit) or maximum allowed current. Yes it will let when there is short circuit. It is possible that you have set the current so low (minimum), even when there is no load, the current limiter kicks in. So measure the input current (connect ammeter in series with your power supply and this module), then short circuit the output and rotate the potentiometer with screwdriver and set the current to just above your expected value. Example set it to 2A.

[@TocsiCS]

Thanks for your answer! I would like to fix a laptop motherboard, which is shorted on the 1.5V rail. I was afraid, that the red LED means something bad, so I turned it off before I could feel a component getting warm. But now I'm going to try it. Thank you again.

[@desislavkanev9613]

Good test,thanks it is very helpfully

[@robojax]

You are welcome. Please subscribe. I appreciate it and helps my channel grow. Thank you

[@anwin85alon]

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[@bubucast]

Thanks for the video. I had a problem in 2 of 10 boards that a bought, I have set them to 8 amps and after 1 day working it stopped, and both where limiting the current to les than 1 amp. And the voltage regulator was working, the only problem was that they were limiting the current to less than 1 amp, and the current control was in the maximum. Very strange thing, I think that the IC may have burned.

[@anwin85alon]

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[@gabrielconstantine7384]

Hi Robojax, I just bought one of these XL4016 modules, hooked it up correctly, applied 6 volts to start and started turning the voltage cw. The red light came on right away and the voltage decreased from 4.8 to 2.9 and stayed there. Turning voltage and current pots either way does nothing, stays at 2.9 volts with the red light on. Gave it 18 volts DC and still nothing. Any ideas?

[@anwin85alon]

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[@Alamini96]

Question, I have a sony NPF battery (7.4V 10400mah) and I want to convert it into 5V 6-8A power supply for my neopixel led project. would this work for that?

[@robojax]

Watch the video and see if minimum voltage of this module is 7V then yes. I don't remember what it was so watch the video. The same for output current. if you need 6A or 8A see if this module did give 8A output. I don't remember.

[@stephenshop4946]

Hello. Is it possible to use two of this in parallel so to increase its tolerance from heat when used in 150w or 200w solar panel?

[@anwin85alon]

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[@velikogradistedanas]

Thanks for video. I have a question. I build (DIY) solar panel for a project 12V/5A . I want to regulate output voltage to 9V/1A for other devices . Do I need diode between solar and this XL4016 module to protect solar panel from returning power.or not.

[@robojax]

I don't have the module in hand. see if we don't have a diode, then put one.

[@fukaishikonoenjinia8729]

HOW about input of 12V to output of 6V? What do you think will be the maximum output current?

[@anwin85alon]

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[@sujithkumaran7717]

Hi,Is it right to assume that when the output load is more it can offer. it cuts off the load electronically, based on this can this be used to automatically switch on load when sufficient power is available from a converter whose input connected to a solar panel , solar panel output vary based on sunlight intensity

[@robojax]

Hi, Yes you can set the amount of current and it will disconnect the output if the output current exceed the settings. Of if the output is current is larger than the input.

[@techofficer1314]

I am working on a raspberry pi project using an old laptop screen. The screen control board requires 12v 3a and the pi4 requires 5v 3a. I have a power supply that can output 19v 6.5a. I would like to only have one power supply for both but I am confused on how to do this with buck converters. Do you have any input? Great info on these videos BTW!

[@robojax]

this module can give only ONE output which you can set to any voltages you mentioned. So you will need different module for other purposes because they are different in voltage.

[@beadsman13]

I've bought one of this but mine wont change the voltage output. If I connect 12V, on the output is also 12V no matter which way I screw trimmers. Same with 3V and 5V. Any suggestion where could be the problem?

[@robojax]

The power MOSFET switch is dead. Unless there is incorrect soldering

[@jeanpierreabregumedina7374]

Hi, what is the name test to voltaje and current?

[@renhit2005]

Have you tested for 1.2v 5A output? What should be the input? Should we keep 90% efficiency in mind and decide input voltage and current? What happens if I use 19v 4a laptop charger as input for 1.2v 5a output.? Does it work?

[@robojax]

yes. Output Power = Input Power -10% or 15%.

[@hyrochinz]

Do i need to add a schottky diode on the output of this module to charge lithium batteries from solar panels?

[@robojax]

Job of the diode is to allow the current to flow in one direction. If you want to block the current from outside to come to this module when the other source has higher voltage, then Yes put a diode and it will block the current from entering to this .

[@superproxy3782]

What is the current of the input voltage to power on this buck converter? Is +32V, 720mA DC or +16V, 610mA DC will work as my input voltage to power on this buck converter?

[@anwin85alon]

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[@gapguy9564]

is this still the best one to buy in 2021?

[@sayalaperbandel]

Thank you

[@anwin85alon]

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[@arrevunella]

Thanks for the tutorial, I have one of these step down buck converters, I would like to use it to recharge a 3s 18650 battery pack (3x sony vtc5a 2600Mha, 35A maximum discharge) I adjusted the output voltage to 12.6V and the output current to a tenth, 260 Mha, when I connect the battery pack, the voltage (measured with the tester) drops drastically, is this normal?

[@robojax]

Hello, please see how to change battery from this converter. kzbin.info/www/bejne/f5DVg4eAnLSBitk

[@arrevunella]

@@robojax Thank you very much ;)

[@KennethTanFotografie]

Can this converted be switched with PCM in some way, so I could dim a high power led? There are no connections, but maybe you know a way to implement/hack this on this module?

[@robojax]

Yes it is possible to do it. If you look at the data sheet for XL4016 IC that is used in this module, it has a SW or Switch pin. In this module the SW pin is always HIGH so it has power at output. Check it and see to cut path on PCB and connect your own wire to the SW pin and control it from outside . Here is data sheet www.xlsemi.com/datasheet/xl4016%20datasheet.pdf

[@KennethTanFotografie]

Robojax That is not correct. The SW pin is the actual output. There is a schematic on page 7 that show how it can be done with a resistor and a diode, a pwm ttl signal can be fed to the FB pin and the SW output can be turned of and on. There is no data on frequency of this signal and how the SW output behaves. I'm going to test this.

[@robojax]

you are wight. I quickly give you wrong info from Table 1. The SW pin as shown in Figure 3 is just the output stage of the chip. As shown in Figure 9, you can do it with FB pin as you mention.

[@gomriria2197]

Please what is the machine with fan where you put the amperage you want?

[@robojax]

here kzbin.info/www/bejne/Y5ysaIKqia2XZ5o and there are links in description if you want to purchase it from eBay, Amazon, AliExpress etc.

[@pedroborges5203]

Good, I set the current to 5A if my load needs less than 5A for example 2.5A. Does the converter only carry this current at 2.5 A if it sees that 5 A is too much for the load?

[@robojax]

Calculate the power using voltage V and current I, so P= VxI and OUTPUT =INPUT-10% of INPUT

[@pedroborges5203]

@@robojax thanks , tell me one thing if I set the current 5a, I'll always have the current output 5a ?

[@Loftikaz]

can it handle input 40v, output 24v at 4a?

[@robojax]

Please read the title of the video.

[@sunrise4753]

Hello, I want to make a regulated power supply from the minus working computer power supply, I need a voltage converter for this, you have tested many voltage converters, which advice would you give me?

[@robojax]

Hi, you have so many options. Computer power supply has only 5V and 12V with lots of power depending how powerful your power supply is. if you need 5V and 12V, then you don't need converter. First you have to know what voltage you need. if higher than 12V, then you need boost convert so you can get higher voltage like 15V or 30V output. If you need lower than 12V or 5V then you need step-down converter or Buck converter . in Any case you need to know the amount of current at output. For example if you need 5A then get 5A converter.

[@sunrise4753]

@@robojax I want to convert 12v input, 19v, 20v, 24v.

[@africantwin173]

Which durable AliExpress buck converter would be best for a Raspberry Pi 4 . 13.8 vdc input must go in the buck converter. Pi needs 5vdc 4Amp average

[@robojax]

Hi, Raspberry Pi 2 needs only 2.5A see it here www.raspberrypi.org/products/raspberry-pi-4-model-b/specifications/ and this module is like carrying single person on a truck.

[@africantwin173]

@@robojax Okay. That part is clear. I just Ordered 2 XL4016 from AliExpress. What would be the best way to adjust the Amperage potentiometer. Since i only have a voltage DC meter. No current clamp meter. Should i just turn the current potentiometer far enough so that the Pi doesn't go out, or give me under voltage warnings.

[@Apphis]

hi, what is the name of that dummy load you used? where can i get one?

[@robojax]

Hi, it is called electronic load and here is introduction video for that kzbin.info/www/bejne/Y5ysaIKqia2XZ5o

[@vitorsantos3397]

Thank you for your videos; can you give me idea how to (set step by step) the current of the xl4016 on my power supply. My psu project will be for 3A and acording specifications xl4016 can supply 8A. The psu working good.

[@anwin85alon]

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[@PauloSilva-ll4vs]

Hi, I do not understand, you put 7,5 amp into the load, but your ammeter measured 2,6Amp at 3,3volts and you said the dc-dc converter is capable for 7,5amp. Please may you explain that to me,

[@robojax]

Hi, I made the video to explain that. If I type it, what was the point. You did not mention the time like (3:25) so I could look at it. Remember Input and output current are always different.

[@PauloSilva-ll4vs]

@@robojax Thank you for your answer, I did not see the ammeter was in the input, now it makes sense to me.

[@informing_]

I used it with power supply of 12V, 5A and output 5V in order to charge 18650 cells and it couldn't handle 2A.. the first cell was charging fine at around 1A but when I put a 2nd cell it only provides around 1.2A... and even the leds are struggling.. maybe I do something wrong??

[@robojax]

what voltage did you set? 18650 single or parallels of cells needed to be set at 4.2V. then you need to set the maximum current. I will make video for this module. Check my channel "Watt Hour" where I am focusing on Charger, Battery, Solar and Power supplies.

[@LincolnBrownLinpointKenya]

Great video, whats the make of the device you used as your load? and where can I buy it .

[@robojax]

no make or brand. Everyone copies cheap products. this can be purchased from eBay. Just search for 9A converter or 280W converter.

[@gomriria2197]

@@robojax no ahmed we are talking about the testing tool with the fan, could you tell us what it is? Thank you

[@jgc5782]

Thanx for the video my brother..what would be the result if input is 24v and output 30V set at 2A...Thank you

[@robojax]

This is NOT boost converter. If input is 24V the output is always less than 24V.

[@jaymundada9612]

i am making a solar cycle so my solar panel is 12v 50 w and i will place a converter that will change it to 24v 7 amp and recharge the battery . battery is 24v 20 ah and the motor is 24v 250 w. so plz tell me is this is right or i have to change it .

[@robojax]

Hi, your solar panel is 50W and voltage doesn't matter. Now you want to get P=IxV, where P=power in Watt, I=Current in A and V is voltage. for battery you want to get V=24V and I=7A, so P=IxV=7x24=168W. Never possible. you have $50 and want to purchase $168 goodes. you can only get 50W-(15% to 20%) . Voltage and current doesn't matter as long as the product (multiplication) of them is equal to P-Losses

[@EJEuth]

We observed the module maintains the RED Led on, even with 7.5A. It would mean, at least for me the circuit is limiting the current, or close to do so. That might explain the voltage drops we saw at 7.5A and the more drastic voltage fall at 9A~8A. There is another channel that modified the circuit to increase the CC operation from switched (in the current loop) to linear, adding a 100K resistor in the feedback of one of the LM358’s OpAmp. This made it work linearly, instead of a On-Off comparator.

[@anwin85alon]

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[@Caeralex]

Can it be used as a charger for an 18650 12v 45aH battery bank? thanks!

[@robojax]

yes it can. You set the current . the maximum current it can handle is shown in video.

[@william84293]

then can it bear a load from 5V to 9A? I need to connect a motor with those parameters

[@robojax]

your question is not clear. is 5V input or output? for input the title says 7-40V so no. for the current, please watch the video to see what is maximum current that you can get from this module.

[@soumikchakraborty515]

Shall I get 24v output if I give 10v input?

[@robojax]

this is Step Down (see the title). Search for boost converter so the output is larger than input . here are my videos on boost converters kzbin.info/door/kcBSig_Iu4ZnAIeCeG1TVgsearch?query=boost

[@danielm.4359]

Why does it shutting down? I have the some buck converter and it can easily do 9A forever with cooling fan. You might have a defective one.

[@stinkycheese804]

This XL4016 is an 8A rated regulator, not 9A, limiting the true output of the whole converter to 8A max, BUT it may need a fan to operate much past 6A.

[@robojax]

You are right the chip rating is 8A. But most sellers of THE module on eBay have labeled it as 9A.

[@edmundbajenting1182]

what does the output current adjuster do ? as the constant output current ?

[@edmundbajenting1182]

im planning to power my servo(www.lazada.com.ph/products/ft6560m-60kg-metal-gear-high-torque-servo-motor-i407918433-s982720998.html?spm=a2o4l.searchlist.list.1.cf1677af3ezmMV&search=1) with this ... the input source is 12 volts (4 amp) adjust the voltage output 6 volts and adjust the ampire adjuster to 0 amp..? do i make sense ? i dont know what ampire adjuster do..

[@robojax]

any module with Constant Current (CC) can control the output current and protect the device. (this you have to know first). You will connect your current meter between this module and power supply. then for example set output voltage to 5V. For example if you want to set maximum current to 3A, Then short circuit the output of this module and read the current on your current meter (ammeter). Adjust the knob until 3A current is displayed. Remove the short circuit from the output and your power supply never allow more than 3A.

[@Home1364]

Can we use this in solar pannel 12 volt 250 watt pannel to get constant current

[@robojax]

yes you can.

[@bnrrd_villanueva]

Hi do you think it will work at this voltage Input 16v output 12.6v@6a because I will buy one

[@robojax]

Hi, that is exactly why I made this video to answer it. I don’t remember what I said . So watch it fully and get the results

[@electro-baka8505]

is this module can ignore input for 42V 10A? because i want to step down to 25v 5A

[@robojax]

if you wan to adjust the current that is called constant current or CC. watch the video to see if it has Constant Current.

[@electro-baka8505]

@@robojax i have watched bro, so this module can it works to stepdown my power supply?

[@JoseAntonio-sn6sf]

I bought the same module and whenever I measured the current, it never changed and remains between 6-8mA even though I adjusted the trimmer, so I think those DC converters are not that thing you can trust on, sometimes can come failed

[@robojax]

when we talk about 9A or 9000mA the 6-8mA is 0.1%. This device (I believe) has 2-5% accuracy. So you still got good result. If you wan to measure small current, then get something that can adjusted between 0mA to 100mA or maximum 1A.

[@chelarestelar]

Is the current regulated the same as the voltage, i.e, clockwise increase and counterclockwise decrease?

[@chelarestelar]

Assuming this is true, I turned the amp potentiometer to the minimum (until it's started clicking) and then shorted the module with a multimeter, after which I started turning the amps up, and it seems that it actually is true

[@robojax]

You got it then.

[@dodiecarolino3268]

Is lm2575 suitable for xl4016 buck converter? Thanks hope somebody answer my question thanks

[@robojax]

Hello, they are totally different chips and used for different applications. LM2575 is 1A step down converter see it here www.ti.com/product/LM2575 and XL4016 is 12A step down converter which is 12 times higher see datasheet here www.xlsemi.com/datasheet/xl4016%20datasheet.pdf

[@leblebitozu7795]

What does you take max. output voltage with input 12v?

[@robojax]

The output is always about 1V to 1.2V less than the input. So for 12V input, you will get about 11V or 10.8V

[@leblebitozu7795]

@@robojax Thank youu ✌🏿

[@robojax]

you re welcome.

[@ricardocosta5942]

Obrigado pela explicação, este módulo que protecção tem? Do gênero, curto-circuito, inversão de polaridade, etc. Estou a iniciar eletrônica e queria construir uma fonte regulável de bancada. Obrigado

[@robojax]

Hello, here is the datasheet for the XL4016 www.makerfabs.com/desfile/files/XL4016-Datasheet.pdf

[@davidut55]

Got one of these units, but current is at maximum, cannot adjust. Had a look over the board but nothing stands out. Any ideas?

[@M_a_n_a_n1]

Facing the same issue. Any solutions?

[@DavidJUR-es2qn]

@@M_a_n_a_n1 Can't remember but could have been one of the potentiometers was too far. I mean if you have the voltage set too low, the current goes higher than the setting from potentiometer.

[@M_a_n_a_n1]

@@DavidJUR-es2qn I have set output voltage at 9V and input was 14V. The short circuit current went to 6.6A and didn't changed on changing the I_POT value. Current changed by changing the input voltage. The current followed input voltage proportionally.

[@M_a_n_a_n1]

Hey I got the solution! One pad of diode T4 was not soldered, after soldering it started working well.

[@abeditani8293]

i just buy one and its work grate on 8A

[@anwin85alon]

pm me can you to install do sola paint of charger¥

[@abeditani8293]

@@anwin85alon yes it can work with solar panels charge but you need to not pass 5A max for long term working . And use it as 2 to 30v uses . It's good unit as step down converter from 35v to (2-30v) and don't use high current with out Colling fan . You can use it with out fan for 3A or Soo for charge. You know how to select voltage but do you know the way for how to select the current ? ( I know how if you want ). And by the way you can use it as protection from over current ....

[@riyadhrahman4986]

Ampere does not work. Only voltage works. The green light is on but the red light is not. What is the solution?

[@AitoLaikoSamoMoaCawfy]

you cant go above 5a at 4v as amp increase so as voltage

[@bader68]

Hello Robojax first of all I am beginner in electronics what is the name of the power with green display and big fan ??

[@robojax]

Hello, it is called Electronic Load. Thank you for not skipping the ads and keep watching it. This will help me a lot.

[@uttambhattacharjee]

I wants to charge 10 ups battery( 12v 9ah )at a time with a laptop charger and this buc converter pleas guide me

[@robojax]

Sorry I read your comment over 6 or 7 times and hesitate to replay as charging is not simple things. Proper charging will keep the battery healthy and make it work longer. But I have no experience with that. I know the theory only.

[@uttambhattacharjee]

@@robojax thanks

[@atakaravelioglu301]

Hi, first of all thank you for this video. I have got it too. I have a question. If i use 12 volt 2A adaptor in source side, will i take 6volt with 4A? (Like a transformator)(I am asking just teorical with %100 efficiency) Lastly whats the meaning of color of led? Thank in advance

[@alilatifovic1628]

Yes! You'll get max 7 amps with that adapter. Blue - no current, red - in use.

[@muppetpaster]

No it won't

[@kaldennis2772]

What driver is used for the mosfet

[@robojax]

Hi, I saw this comment so many times. but when I got home, I forgot to check it. I've included the datasheet link in the description. it is XL4016 convert chip. here is datasheet www.xlsemi.com/datasheet/xl4016%20datasheet.pdf

[@MACYNET323]

What happen if you remove the insulator paper betwin XL4016's and heatsinks? Thermal transfer should increase

[@robojax]

no. it will decrease. the metal surface is not as smooth as you think and both metals will not stay in contact. So keep it.

[@MACYNET323]

@Robojax I guess the insulator is used to avoid that heatisink become electrical conductive. But have worst heat conduction than quality thermal paste.Try remove imperfection from Mosfets and fine sand heatsinks then apply MX-4 instead the insulators. It's hard put in shortcuit them since they are black anodized

[@keith_ferdinanduz]

Hi, Can I use this module to charge 12v UPS lead acid battery?...

[@robojax]

Hi, Yes you can. Just set output to 13.8 or something like that . The voltage will be initiall when you connected to level of battery When the battery is filled up the voltage will increase to 13.8V. Make sure to check if your battery voltage is 13.8V before conning it. 12V is nominal voltage but charging voltage is different.

[@keith_ferdinanduz]

@@robojax thanks for the reply!. Do I need to adjust the current to certain amount?

[@tomaszbiskup891]

The 5V and 8A test is not exactly failed. It was thermal throttling and the description on many china site claims that on high power it need external fan.

[@robojax]

You might be right. My test was without any fan. Thank you.

[@EnriqueLUrcia]

Does anyone knows if this buck converter can adjust a current as low as 20mA? thanks a lot!

[@robojax]

if this module can supply 9A=9000mA and you want 20mA, it means 20x100÷9000=0.22%. the potentiometer used in this module has 10% tolerance in best case it has 5%. so you can never set less than 10% of the current 900mA or in best case 5% which is 450mA. The answer is NO. If you are looking for 20mA, then get something with about 1000mA maximum current or even 500mA so you can set 20mA. good luck.

[@EnriqueLUrcia]

@@robojax I understand. I have been looking for a Buck Converter with variable voltage and current to add to my power supply project. I want to take one of the cables of the ATX to add leads that would output low voltage and low current. Buck Converters I see that work with low current only have one potentiometer to control voltage, and not current. I will keep searching. Yes, good luck for me! Thank you so much for the elaborated answer!

[@tejsgaur1245]

Can I use 36v and 6amp adapter and get max power ???

[@robojax]

P=36V x 6A =216W, if this module has efficiency is about 90% so 10% or 21.6W will be lost and you should get 94.4W. so watch the video and see at 30V what is the efficiency and then you will know.

[@BingoBongoMan]

touching all those components with your screwdriver while you are explaining makes me very nervous. But great videos as always. Thanks a lot!

[@robojax]

Thanks 👍

[@anwin85alon]

pm me can you to install do sola paint of charger¥

[@arghyadas5789]

Sir ...how will it work at 23v input and 20v output at 3.29a ...?? PLZZ reply.

[@robojax]

I believe I did the test to answer the question. I always show the maximum and minimum voltages.

[@sunilj10]

How can the component on the underside be protected ?

[@robojax]

cut case of a CD the same size as this module and tape it on the module.

[@rubenmarques9549]

How can I find the datasheet of this converter?

[@robojax]

I just added in the description of the video. Check it. Thank you for letting me know. I had forgotten to put it.

[@ch2o2]

..please, help me in understanding - this module is supposed to deal with 280W (does that mean "power-support value to a load" or "heat dissipation"?) and, for example, in your first measurement it can't even deal with Uin=12V (I=7,5A), resp. Uout=9V (I=9A) (??) which means: Pout =81W ; Pin =90W (and the Power to dissipate = around 9W) - is that right or am I totally wrong? ...nice review, btw, thanks :)

[@robojax]

I am sorry for late reply. I was on vacation. Yes. The output can NEVER be more than the input. 280 is not right if you see the test.

[@MaxMax-wy7bi]

Can you explain me how to set the current to max 5A?

[@robojax]

I will make video

[@MaxMax-wy7bi]

Thank you! very kind

[@jagadeeshapatil75]

Any lead acid12 v 80Ah battery charger module with step down modules share ideas please.

[@robojax]

80A is huge. you can charge it with with this module at 8A in 10 hours you will get 80A. But if you want faster charging, keep in mind that charging with higher current reduces life of the battery.

[@redvalley9807]

Hey Sir ! Can I use it in 24 volt power supply to make (1.25 - 24) volt 9A power supply

[@robojax]

Hi, this is exactly why I made this video. I have shown all input and output voltages and tested it with different currents. Please watch without skipping so you have no questions at the end.

[@redvalley9807]

@@robojax Yes sir, I watched the video but If I use 24v input, will it provide more ampere at output than 12v input??

[@MyJordan201]

what the meaning red lamp on the step down?

[@robojax]

that is the CC or constant current light. When the current reaches the maximum setting value of current, it will reduce the output voltage to keep the current constant.

[@prathameshraikar5428]

Can i use it with 12v 2amp load??

[@robojax]

I did the test to exactly answer these types of questions. if I want to answer your question, I have to watch. So you watch it and please do not skip. Some people skip the video and then ask exact question that has been answered. Good luck.

[@SriHarshaArigela]

Can you recommend Step Down Buck Converter for Arduino Uno Digital input pin

[@robojax]

Arduino digital input is accepting 5V. Yes if you set the output of converter to 5V.

[@africantwin173]

@@robojax can i use this for a raspberry pi 4 that needs 5 volts dc. How do i adjust the ride current. Since i dont have a Amp meter. My voltage meter only measures AC/DC and Resistance. The XL4015 has trouble on getting the pi4 with usb wifi adapter running. . The input on the xl4015 is 13.8 volts dc. Outputs around 5.1 vdc.

[@dj_sorra8605]

Can I use 24v input with 6a 100w for this module? RESPECT🙋‍♂️

[@robojax]

yes you can. input is as important as output. but the total power you can't get more power than the input power.

[@dj_sorra8605]

Is good thanks

[@anzirudefitra7352]

great lesson I learned. there is another Vidio discussing about the PWM signal in the Buck converter?

[@robojax]

I should've measured it. I just started measuring the switching frequency from a few days ago and tomorrow will be video where the buck converter frequency is shown.

[@anzirudefitra7352]

@@robojax Thank you sir, I will wait for your next video, I hope God will always give you health :)

[@robojax]

you are welcome. May god keep also safe and healthy.

[@sksdy9444]

Bro as i remember xl4016 is rated for 8A of current( i think i saw on data sheet🤔 not sure), so why you are testing with 9A.?

[@robojax]

On eBay they listed it as 9A and some as 8A. So i am giving warning to the buyer. see ebay listings www.ebay.ca/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR11.TRC1.A0.H0.XDC+CC+9A.TRS0&_nkw=DC+CC+9A&_sacat=0

[@sksdy9444]

@@robojax oh okay. got it . nice work by the way 🤗🤗

[@shardy_tv]

What value of potentiometer do i need to replace the trimmers?

[@robojax]

what is written on the part? if it is 104, then 10 and 4 zeros 100000Ω or 100kΩ if 503 then 50 and 3 zeros 50,000Ω or 50kΩ

[@shardy_tv]

They are w103

[@robojax]

there you go, you found it.

[@shardy_tv]

Ty