# Test review of 2A DC-DC Step up boost converter MT3608

My name is Ahmad Shamshiri and I present this tutorial from Canada. Hello, welcome to Robojax. in this video we are going to converter test. It is a 3 amp booster converter that is 3.3 volts up to 27 volts so you can get 3 volts 4 5 6, and then the higher voltage you want adjust. so it increases it. but this is the setup i now connected, as you can see here, five points come in seven volts and these are the wires, so it is linked to the output we measure 27 volts. Because this voltmeter cannot use the 2-point 4 volts, I have a 2-point-4-volt set to the maximum, which is 27.7V . Now I reduce the tension okay, 2.23V and then we have 27 volts. So let me reduce it. 2V and yet we get 27 volts and as soon as I go down, the output will change so that it can work with the 2 volts and higher to give you the regulated to give tension what you set from here. Let me put 5 volts now and now you see 4.9V and this is the voltage is 27.7 volts when I increase it 7 or 8 volts, it's when seven point nine, a little variation we see here, and maybe we should adapt.

But usually you will use it to get a certain fixed voltage from ' to get a fixed input. let's say from 5 volts you want 12 volts or from 5 volts you have 9 volts or 24 volts, for example, in some industrial applications you need 24 volts, so let me adjust a voltage, that's the output. so I reduce it. let's make it 12 volts, so now I set it to 12V and the input is 8 volts.

It's not good now, because my power supply shows 7.8 volts, so it's not a good voltmeter. it is 12.06 volts. I change the input now and reduce it, so it's still 2 volts because we can see 6.7 volts. There is a 0.2 volt difference, but even 3 volts gives us 11.99, so 12 volts. As soon as you have connected for a certain fixed input, the output is quite stable. it is a booster module, this is the positive input and then it is a ground UN and it's a V-out plus and then it's a minus or an earth and we have a mostly rotary potentiometer with which you can change the output voltage, so remember that it is multistun, which means you will rotate it or multiple turns (like 15 to 20 turns) until you see an effect, so you will see it on some values ​​turn so many turns until you see the effect, so do not give up. it is therefore based on MT 3608. There is a data sheet of 4 MT for the effect weight, because J it says a high efficiency of 1.2 megahertz, this is the conversion frequency of to 2 amp.

And input voltages 2 to 24 volts and get internal 4 ampere switching current limit. production up to 28 volts, so we got 27.7, which is pretty close. and this says efficiency up to 97%. so here's the circuit UN, it's a slide, it has a lot minimal parts, so you have one or two and then the L an inductor. the efficiency we use is 5 volts, is 12 volts, that's the amperes the output, so the efficiency 93% 92 percent, as you can see here at 100 million, the highest efficiency is 200 milli amp. As the current increases, the efficiency decreases by 800 million amperes, that is 88% energy disappears, so at 1 amp it may be discovered that you 86% can understand and accept it from 5 to 24 volts and also the output will be slightly greater than the input up to 28 volts. my plan is to do it all the time to use 5 volts from USB or Arduino or other sources get and maybe 12 to get everything I need, or 9 volts, regardless of the export demonstration, now I use my electronic load, these are the two wires I will use it as a load on the output of this one farm.

My electronic load is now connected and it read that the voltage of the module is 12 volts. it takes three amp from the source i measure. and it has one amp, let me touch this chip is so hot it now burns nine volts nine point two volts and then we want 12 volts so let me adjust the tension we can read the tension here so clockwise reduces the voltage so make it total, so it's about 12 volts now, so it's about 12 volts, let me now about 10.

Set to make sure it does not turn off, so let's start 12 volts 1 amp and you can see that the voltage is still good, so from 9 to 12 they draw 1.44 amps, it is not very stable. so from 9 to 12 it gives a very good voltage very little temperature oh absolutely you see I can keep my finger this past so it's good. from 9 to 12 it is an amplifier. let's change it now to 2 amp at 9 to 12 now I'm going 2 amp at 12 now pulls it out of the load 3 amp the voltage drop significantly it drops because maybe it gets hot yes yes it can not to this chip is not affected he heats as the temperature rises, the voltage drops.

so it's 2 amp 11.3 let me leave it for the couple for a minute and heats so consistently drops the voltage it now goes 11.18V so I still dropped very hot can not be so touched very well harmed so we have 3.3 volts input Let me put it on 1 amp, let me have the voltage changes to 4 volts, so 3.6 volts .. now 5 volts 1 amp input is 3.3 volts, it shows 3.2, but we have 3.3 volts, and that leaves me when it is so 3.3 volts and we have 5 volts one amp so far, it's very cool, the system subtract 1.9 3 amp from the source, very normal. It seems like it can handle one 1 amp, so let me just leave it after 2 amp bump, turn it off let's make it two amp and see what's going on so that the voltage drops significantly 3.6, so let's make it three so it does not switch off not, so that the voltage is very very low. (test failed) now the input is 12 point 12 volts the output is 24 volts as you can see we are going to test it at 1.5 so the voltage is already dropped below 20 volts, this means very hot amp 12 in 24V from 1A amp let's try it now draw 2.1 3 amp from the input for 12 volts and this is the output 1 volt has already dropped, so once 23 it is 23 watts power dissipation, so now the voltage still drops no it's good so you see the tension.

I believe the fan affect it, it cools down, let me just block the fan. so the voltage should now drop three two one. You see it heating up. Let's try 0.5 three volts 0.5 now it draws 1.06 amperes from the source. the voltage is many studies a very good 24 volt 500 milliampie so far let's see 10mV millivolts drop hot burning but not so much. the voltage drop therefore continues, but let's look at how many seconds it will be again daal. (test passed) now it has gone up, so that means it is steady. This was the test of MT3608 1 amp booster converters. This article can range from 3.3 V to 5 volts at 1A work. 9 to 12 volts at 1 amp 12 to 24 volts at 0.5 amp as the voltage increases the conversion so that the current will be lower, you keep it in mind because you can not trust it with higher current or the claim of 2 amp. thank you for watching, please accept the video, please share it.

I appreciate it if you have any questions, please post your question the comments section. I will try to answer that. Subtitled by Ahmad Shamshiri on October 22, 2020 in Canada. I did my part to help you learn. Now it's your turn. you can 👍 the video, Subscribe 🔔 on my channel and simply say 'thank you'. If you would like to donate cash, the link to my PayPal account is below this video ⬇ in the description..