Convert 24V 36V 48V 72V to 12V high current
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- Опубліковано 19 тра 2020
- Convert 24V 36V 48V 72V to 12V high current
60V 48V 36V to 12V 3A 5A 8A DC DC Converter 48VDC to 12VDC Voltage Converter Step Down Buck Car Truck Vehicle Power Supply
This circuit can work in wide voltage range. From 24V to 72V, Output 12V - 30A. Can use it to charge battery from solar panel. It dont have overcurrent protection. If you want, I can add overcurrent and overheat protection in V2 version.
Facebook group : bit.ly/CreativeElectronic
Diagram here : File 79 in bit.ly/AllLink
Or www.mediafire.com/file/h9uhng...
Or drive.google.com/file/d/1othf...
All my projects are free, I design them on EAGLE 6.0. I uploaded it to Google drive. You need to use a web browser to download the file and open the file with winrar software (extract) on the PC. Open schematic file (.SCH) and PCB file (.BRD) with EAGLE software.
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#Buck
#12Vto220V
#48V - Наука та технологія
:D, I'm pretty lazy modifying eagle files. Please see the file list components
Hello sir PCB layout file is corrupted please help me
hi my friend ineed youre email:cosmasnjau@gmail.com
i need flook meter like you have
000000000000000
can you share circuit diagram
It was a nice and useful video. I watched with pleasure. thank you.
Yes, I'm glad to hear that
Very good 👍👍
Dear brother, I have no words to appreciate you.
Thank you so much.
Great job !! Very useful project !! You are the best!!
Thanks
Thanks, you circuit is one of the best...
Wow you are amazing I'm a big fun wonderful works keep it up. 🤖
Thanks for your reply sir,,,,a big fan of yours
Homemade 102 dear brother.... my request is pending......
Very good. Thanks Ad.
Nice, Cant wait to try it out
:D
They have become meke very useful projects👍
Iie warmest congratulations for this very very interesting and safe project I will try to make it happen. I await the latest version with the control of the output current, who knows it could be made for 50A. Then I wanted to ask if this circuit is good for powering electronic circuits because I don't see any inductance or capacitor in output for filtering. Well come on I'm sure the next version will be TOP. Congratulations again and to the next video. 😉😉
Thanks for such a great informative video , i just want to know for cost cutting if we use only one mosfet and one fast witching diode will it work properly
This video does not explain the principle, so I will try to explain one:
This is NOT a buck converter, there is no inductor here. This is using Push-Pull Half Bridge topology using IC SG3525 that is widely available. This IC responsibles for generating Inverting and Non-inverting alternating PWM output for those two MOSFETs on heatsink. The two MOSFETs responsible for delivering the "push & pull" current for in the transformer. The transformer is using turn ratio of 0.375.
Using transformer at "full duty cycle" the output voltage is input voltage times 0.375. For example, if the input is 72V then the output will be around ~26V (this is if both the MOSFETs have ~50% duty cycle). The output is then put on feedback into the inverting pin No. 2 of the IC. The duty cycle adjustment (shown in oscilloscope in this video) is only for one channel while the other channel is kept near 50% duty cycle. If the input is 72V with the "full operating" you get output of ~26V but if the duty cycle of one channel is reduced to around 23% instead of 50% of it then you get roughly 12V in output. The blue mini-trimpod that you see is for this duty cycle adjustment.
By the look of the MOSFET chosen IRF512, this can only handle at maximum 8A (4A for each MOSFET). Ideally this should only be used for 5A or less continuously and with additional fan.
Based on the transformer ratio 0.375 the minimum input voltage should be 1/0.375 x 12 = 32V. Input for lower than 32V will not be able to reach 12V output (it will output less).
Note that there is a difference in winding of the transformer. The push-pull topology is using transformer winding that is slightly different than the typical transformer. And unfortunately it is not shown in the video. Note that there are THREE terminals on push-pull in primary side of transformer and are connected to one to the Anode and two to the Drain of each of the MOSFET. The output winding is also complex and the video does not show it properly.
So I think if you are beginner or don't have experience in making push-pull transformer, you will find it is near impossible to create this converter by just looking at the video and schematic because of this transformer winding issue that this video does not give enough detail. If you are beginner I suggest you just make a simple BUCK converter first, if you need a buck converter that can go up to 100V then you just need to separate two buck converters in series: a buck that convert 60-100V to say 35V, then step it down again to 12V.
thanks for explaination
Chỉnh dc dòng nữa là ngon luôn ad ơi !
Grand chapeau
Good job , add current limiting mode “ CC “ and can step down voltage to 2v.
This circuit is not suitable for a wide voltage range. The effect will be very low when the duty is small.
Homemade 102 i mean fix point at 12v then can step down to 2v and step up to 24 v it’s buck-boost converter and have current limiting , rang is 2-24v and input voltage is 12v, can you do it ?
Lanjut Om 👍
Great work quality.
Question it I need more amperage on the output should I just use mosfet with higher amp rating or use thicker coil wire
both
Good job dude so cool and great guy
good one
Now We have need a good solar charger controller circuit.
All Market produce (MPPT controller) not charging properly.
simply the best
Great 💝
Super best 🙌😍
Thanks
LOVE YOU SIR
Thank you pro
:D nhớ like và chia sẻ nhé :D
Good project , make a adjustable 0-36v recommended,
It is very difficult to reduce the voltage to 0V. Most are at least 1.5V.
Bro request, short killer range voltage 1.2-5volt dc high current 😁
sir nice video but please make the video on design of transformer in detail.thank you.
High mate, I need a answer as soon as possible what changes i need to do to make it for 36v or 35v instead of 12V ?? do i need to change the number of windings and zener diodes ?
Sar aap ki video bahut acchi hai lekin a complete Milega Kahan
nice
Thanks
They bro add the soft starter to avoid the sparks at input
When will you publish updated version, it is one of best video. One question please does variation in input voltage (like 40 instead of 55 as a fluctuation) will make variation on output or output will remain constant ?? Please answer
It has voltage feedback. The output voltage will be stable
By any chance, have you created a graph of efficiency versus input voltage ?
I like very much what you do, anyway
I tested it. Maximum efficiency is 90% at 48V input. 15V output - 20A. Efficiency will be lower at other voltage levels. Minimum of 78% at duty less than 10%. The mosfet is quite hot.
@@PhdHung Those IRF512 FETs have a huge RDSon ! I understand these are salvaged from the skip, but you could probably reduce the heat, improve efficiency and perhaps get rid of the heatsinks as well, with better suited FETs. If you still want 100V, you can fit IRF4110, otherwise at 70V you can put IRF3077 with 3.3mOhms max !
Good works
output voltage stable to fix 12v if input voltage increase/dicreaase? or output voltage also increase/dicrease
Nice
Thanks
Pls do a tutorial on how to coil transformer for inverter to any wattage
ok, wait me
@@PhdHung
When making version 2, please make variable input from 10 or 12 volts to 72 volt variable input, your design is good but i working voltage source from 12 volt input, i am ok, if the output voltage is less than 12 volt DC if given variable voltage from 12 to 72 volts DC
how much maximum input ampers it can handled ?
How much maximum output ampers it can provide at 12 volt DC output ?
@@Royd20 Well, it's not possible. The circuit is a buck converter, ie it converts the voltage DOWN, not UP. What you ask for is a BOOST converter, which does the opposite.
Hi bro is this high efficiency buck? I plan to build one with pulse trafo for my solar. Since i dont know how to use uc3845. Can i increase the efficiency by adding 150uh inductor to the output?
What is the air gap(AL) value of this ferrite core?
I will eagerly wait for your reply.
Your design is prety good but did you caculate the efficiency off the circuit ?
Most of the video is watching assembly. No current indication at the end though it looks like a 55w headlamp bulb which is only 5A, not sure if that qualifies as 'high current'? As you're stepping down the voltage I'm not sure why a transformer is being used, unless isolation is required otherwise a simpler buck converter would have been more appropriate, surely?
You have shown 24v to 72v but u r testing in 55v? Is it work from 24v and in your diagram also mentioned 48v input. Please clear doubt.
Great job sir,
Is this circuit available for 60A input?
I'm waiting for V2 version
Thank you
Yes, I will design a new version.
Very informative.can you give information of transformer bax you used datasheet of that or turns ratio.
Project file in video description
If you provide in diagram it is very useful for us
Sir In project file secondary side three pin you used
@@PhdHung sir in secondary side you used 3pin
Can you give the link to get circuit diagram for this .
Thank brother.
Hi im trying to build the smallest inverter with feedback on the world. But i need a very small transformer. Can you make a Video about rewinding a transformer from an phone charger?
Thanks
Good tiçhing 👍👍👍👍👍👌👍👍👌👌👌👌👌
This is a great job, but you did not show the number of turns for the second side winding, because the first side was 6+6, and the other side is which turns. Thanks
16+16
but he has connected starting of winding to battery point dont know why
Very good video
But
12 voltage to 72 voltage convert.....?
Please tell me how was the efficiency of this design
Congratulation. If out Will 24v How Will make ?
Quanto fica uma desse amigo já montada?
ngoài mua sữa cho con em nhớ mua cho vợ 1 món quà nha em.....he he he
Lương tháng vợ giữ hết anh ơi :(
Muốn điện áp đầu ra tăng lên 24v thì cần can thiệp tần số hay tăng số vòng dây của biến áp ạ?
tăng vòng dây lên nhé
Tăng bao nhiêu vòng ạ? Em ko biết công thức tính biến áp xung ạ
ola´gostaria de informar , quase todos os arquivos que estou baixando estão corrompidos o que sera
Can you make a mppt charger for 12 volt battery charging.
Please explain a 72v to 240v 50 hz 4000w squ wave inverter with stebilised supply
how to make circuit which can take both AC / DC - 20 to 253V, & convert it to 24vdc 2 amp.
Hi my friend... can you fix an invert-er from car alternator? from 12 v to 60v or 72v for self charging my EV car of 5 or 6 batteries.... Thank you.
I'm not sure
Hi, i have a 75v transformer, can i use it ?
for 72v oor more, how many changes i have to do?
Will it work like mppt??
How do I achieve 3-5A in this circuit ?
Nic
I am confused about one connection, why have you connected battery voltage to starting of transformer secondary winding? Shouldn't it be at center point of secondary side??
Can you send your contact details.
This can 24V 20A with trafo EER28?
I am follow yours interesting videos about inverters.
I am interest to know the a circuit diagram for my amplifier... 12vDC input from battery and output is 33-0-33 v DC WITH 20 AMP.
INCLUDES OVER, under voltage protection and constant voltage and amps output.
Plz give me any circuit diagram with transformer makibg. Or any assembled kit available from you... Cost please...
💝
Thanks
Can we get constant output if our input is variable
Yes, ok
Overcurrent AND overheat yes
Yes, in a later version, I will do it
Hi, what did you use as a 20A Fast Diode? Thank you.
Find fast diode in ATX power supply
Hello sir it would be helpful if you say the inductance of the both coil please
biến áp xung dây bao nhiêu chập bao nhiêu vòng vậy ad ơi , cả sơ và thứ cấp nhé
Hai..
You can make switching smps 35vac ~ 85vac to 24vdc max 1a
Use regulator catv amplifier
ok, wait me
I never understood this at first but I get it just like inverter but convert the ac back to dc
please make dc to dc. from 12v 5a and above until the 12v lamp breaks or turns off
Bro, which one is more high efficiency (%) using TRAFO(EER28) or Toroid cores 33mm for large currents (step down)?. thanks
Toroid cores, for sure
Toroid cores yellow/white and green color. Which one more better Bro which same of turn wire.?
SIr ji. 48 volt solar panel to 12 volt battery charge mppt controller banaiye pls. thank u
Can be used as universal buck converter 0 to30v an so on thanx for nice project
I think it is similar.
Using same circuit modifying feedback. Is it possible
is it convert extra voltage to current (amp) if input voltage more then output voltage?
Exactly
Is output volt fix to 12 if input voltage up or down?
Thanks
Yes, the output voltage is always stable at 12v
Nice project
Nice work.
I can't see your project file.
Please re upload the file and verify that the file is accessible to everyone that needs it.
Thanks
The download link is still good. You need a computer to download the file. Can use mediafire link or google drive. open dile .rar with winrar on pc.
Ok
I will try to access it from the desktop computer.
Thanks alot
hi,the values of resistance which you use is not same with circuit diagram.can you share the final circuit diagram.as r3 and r7can you redraw circuit again.
Project file in video description
@@PhdHungThe resistance values in the circuit diagram and the resistance values you use are not the same.
Pls I need the circuit diagram for this project
Hola descargue el archivo y cuando lo descromprimo está vació me pudieras ayudar
I can input 24v solar 5amp and out 12v 10amp ?
Yes
Giả sử dùng mấy con công suất như 100A/90V thì dùng tải có tăng lên đc ko
tăng là phải tăng tất cả mới đc. Mosfet, biến áp. Diode, totem pole driver
Serious question: can a e-bike running 36v 10amp battery handle a 48v 10amp battery with no mods?
no bro, It will burn
@@PhdHung I thought amperage burned. How then might I extend the battery life?
What might be practical? Also, I had a populo 8amp that I noticed had 4 prongs of which 4 were active. On the nakto camel the battery is 2 prong. Yet the recepticle accommodates 4.
What mod would be needed? Motor is 250/350w.
Can i direct connect a recharger? And can I run while recharging? Or would this over amp? Sorry so many questions but people out here have no idea and it looked like you might.
please you can do v2 (( Convert 24V 36V 48V 72V to 12V high current))
ok, rảnh thiết kế, giờ nắng nóng, ngồi tý là ko chịu đc rồi :v
i connect 2 battery total voltage 24 can it convert 12 volt and can it run dc led 13 bulbs
Sir plz plz
40v to 28 v dc to dc step down செய்வது எப்படி. அதாவது சோலார் பவர் 40 v 1.05 A இதை 2 பேட்ரியில் சேமிக்க வேண்டும் என்ன செய்வது விளக்கம் தாருங்கள் please
Can I use this in battery charger by solar panel
I think it is ok. But it has no current protection, please consider.
@@PhdHung can it work in bike as regulator and rectifire (RR unit)
I want continuously current without wave changing so that head light will work continuously without doing deam and hight ..
My bike rr unit is giving wave changing ac current , i want pure dc current without wave changing...
I'm waiting for news virsion of this converter upto 12 volt 80 amp thanks
I stopped this project.
🙋♂️👍
Hi. How to get 5A 10A .. smaller size. Space?
Please explain your request more clearly.
@@PhdHung 3-5A
can you make a video about eagle pcb designing
Sir, can it produce 40 volt 3 amphere to 12 volt 10 amphere??
Please reply...
Yes
Hai...
You can make 35vac>85 to 24v-1a
ok, wait me
Tại minh koa xem va làm theo mấy clip trước cua bạn ma n hay bị nóg một bên fet z bạn có thể giúp minh được k
Sir which paper u use for toner transfer
I use glossy paper and laser printer
Please what is the size of the transformer use it here?
i use EE28
@@PhdHung thanks