Powerful BUCK 10A 24V 80V to 12V

Подписаться 273 тыс.

Просмотров 173 тыс.

50% 1

A few days ago, I bought a buck circuit from China. It has an input voltage range from 24V to 80V. Output voltage 12V 10A. After disassemble it, it uses IC UC3845. Amazingly, it uses N-mosfet. Usually the buck circuit will use P-Mosfet. I then redraw this circuit to find out why it might work with N-Mosfet. Another interesting thing, it uses diode and boostrap capacitors. So it can drive highside. In the next video, I will design a large power PCB Buck, with CC and CV. Wait for me.
If you like my video, please like, share and don't forget to subscribe to my channel, thank you everyone.
All my projects are open source. You need web browser to download file (I upload it to google drive), open the file with winrar on PC. I use EAGLE 6.6 to design the PCB.
Facebook group : bit.ly/CreativeElectronic
Diagram here : File 38 in bit.ly/AllLink You need web browser to download file (I upload it to google drive), open the file with winrar on PC. I use EAGLE 6.6 to design the PCB.
#Inverter
#12Vto220V
#Buck

Наука

Опубликовано:

18 окт 2019

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 310

@gemunujayasinghe618 2 года назад

Sir, thank you so much for shearing your knowledge . I am from Sri Lanka .

@edralinpusag8535 4 года назад

This is what ive been waiting for😊

@masifamu 4 года назад

Thank you very much for this useful tutorial, keep it up brother.

@PhdHung 4 года назад

Thank you so much

@diyexplorer8728 4 года назад

Thanks for sharing the schematics bro.

@PhdHung 4 года назад

@filipcipagauta2799 3 года назад

Se ve bueno, a practicar!! Felicidades

@linaymuran2985 4 года назад

NICE BRO . waitng for cc and cv video.....

@PhdHung 4 года назад

Yes, I think it will appear soon

@electronic7979 4 года назад

Very good project 👍

@PhdHung 4 года назад

thanks bro

@tuncaksoy5290 3 года назад

kardeşim bu devreyi kurdun mu sen ?

@Edmorbus 4 года назад

Good work thanks for sharing

@PhdHung 4 года назад

thanks bro

@mr.invertersine4161 4 года назад

*Nice. Very good design from china*

@PhdHung 4 года назад

Yes, the Chinese population is very crowded. So there are also many talented people.

@moonwaince 4 года назад

Brother really good work

@PhdHung 4 года назад

@eletrotecch Год назад

Nice Work Brod. 👏👏

@eletrotecch Год назад

How efficient is it compared to an mppt controller of the same working power? ty

@tarektitoo9757 4 года назад

continue sir to show this type of usefull videos.....best wishes

@PhdHung 4 года назад

Thanks

@sergnest5291 2 дня назад

thank you so much !

@HUQKIBAAT 3 года назад

Thanks brother

@teguhprasetyo3661 4 года назад

good brother

@PhdHung 4 года назад

@nidheeshjanardhanankp9019 4 года назад

Super bro keep it up

@PhdHung 4 года назад

yes, thanks bro

@mrfrog8502 9 месяцев назад

Bare in mind if the transistor shorts out full input voltage will be present on the output.It's better to use flyback topology because it's inherently safer if the fault occurs.

@Acid13a 4 года назад

Good work. You should put all the circuit diagrams at the end of the videos.

@PhdHung 4 года назад

Yes, I will

@iblesbosuok 4 года назад

Good reverse engineering. Cheers from Indonesia

@PhdHung 4 года назад

@MasterIvo 4 года назад

Thanks, I was looking for a higher voltage buck converter

@PhdHung 4 года назад

@johnconrad5487 4 года назад

80 volts is high enough.

@suhoabinh 3 года назад

Trở mồi 27k nhe, 2,7k khi cấp 50v là chết ic mất

@rawandjaza5929 4 года назад

Good job, that’s i’m talking about ... made with CC & CV mode high output current and not just buck converter made with buck-boost converter.

@rahulpatelgujratahmedabad3497 3 года назад

Good tiçhing 👍👍👍👌👍👍👍👍👌👌

@PhdHung 3 года назад

@jacksonteneng7287 Год назад

Once again thanks for your awesome projects! Please which resistor value should be change to enable 10V input? What should be the value?

@thanhsaynang7656 Год назад

Có mạch in thì tốt quá

@nin1ten1do 4 года назад

now ADD voltage divider for feed back line and tataaa output voltage regulator working like a charm :))

@PhdHung 4 года назад

@VijaySharma-ky5yc 2 года назад

Ground of 3845 circuit should be connected before the coil. I.e with junction of Drain/cathode of diode...

@gilgomesfs9363 4 года назад

Muito bom só falta o projeto em mppt, eu fico no aguardo...

@PhdHung 4 года назад

coming soon.

@hussien123451 3 года назад

how is pin 5 on the uc3845 in connected to the positive output?!

@kirtimohasharma1495 4 года назад

🤘

@republicoftutorials6068 4 года назад

Great, Can you make a video about MPPT , i mean a real MPPT which really track the maximum power point

@PhdHung 4 года назад

yes, i am designing mppt using arduino. It will appear soon

@davey2k12 4 года назад

Well that's sounds pointless Maximum power point 😂😂😂 When sun shines on all the panels just take a picture of solar output 😂 just dam lazy 😂

@marcuskahpeaysewat9075 4 года назад

@@PhdHung hhgghhhh

@MuhammadSaeed-qn1cf 3 года назад

@@PhdHung mppt charge controller 12 volt 60 amps

@eliasmangara1826 4 года назад

Hi, thanks for the circuit. Kindly post the PCB for this project

@PhdHung 4 года назад

ok, wait me

@RAJU-hu8xf 4 года назад

Sir one more question to ask that on following your video you are applying 31volts instead of 24v. Is that it will work from 24v? & in the converter box it is printed 36v to 70v.

@ra2192 4 года назад

👍

@PhdHung 4 года назад

@barjan82 4 года назад

Floating the ground of the pwm controller is a a tricky idea, however should work, but may end up in an unstable-oscillating operation. I would be a bit more cautious using this schematic over 50V of input with the irf3205. The shown schematic contains a bug and will not run more than a couple of miliseconds!!!

@eliascamino5920 Год назад

dear friend, could you please indicate what is the error?

@user-vh2ze4jx4h Год назад

I copied the schematic, but the mosfet heats up quickly on a 1 amp load

@johnconrad5487 4 года назад

6 PEOPLE DID NOT LIKE THIS VIDEO. WHY NOT? I am a p/s designer and I think it is a good video. He is sharing stuff that he learns from buying and checking Chinese p/s.

@PhdHung 4 года назад

Thank you, everyone has a different perspective on one thing, for example, you can see this girl is beautiful but not for others, this video too, I cannot please everyone. But I will still try. Thanks again, God bless you.

@RAJU-hu8xf 4 года назад

Please kindly help to mention active resistor in your diagram.

@RAJU-hu8xf 4 года назад

Sir, inductance value 50 micro henry with respect to 26 turns. What wil be the ampere for the same?

@wong-wongcreative3116 4 года назад

matul lurr,,, boleh jd ref.. thanks

@PhdHung 4 года назад

@RAJU-hu8xf 4 года назад

Kindly guide me. On input 30v applied the output is giving 11.7v, instantly if 12v 21w lamp is connected the load drops to 6v. Next if input is changed to 36v the ouput also changes to 18v. Please tell me ouput voltage is not fixed at 12v, is it variable?

@RAJU-hu8xf 4 года назад

Sir pin 5 of uc3845 is not grounded please kindly suggest corrected diagram.

@phongnguyenktg 4 года назад

🥰🥰🥰

@PhdHung 4 года назад

@rphillson4755 4 года назад

I hope we can replace uc3845 as uc3843

@AufTrass 3 года назад

there is a circuit for the converter and the printed circuit board in lay6?

@tharinduhapuarachchi6892 4 года назад

Sir, please tell me the core measurements

@tuncaksoy5290 3 года назад

hi my friend, I built the circuit. I fed the circuit with 24 and 36 volts, but I get a steady 2.8 volts. I can't get 12 volts. why could it be ?

@zahidswl 3 года назад

Hi All this circuts on paper is wrong ,this man only increse there watch time

@kadirsunman 3 года назад

Hi my friend, I built the circuit. I fed the circuit with 24 and 36 volts, but I get a steady 2.8 volts. I can't get 12 volts. why could it be ?

@foreverV0D 3 года назад

Same issue and the same output Voltage

@aboimad5178 2 года назад

same issue did you find out the problem ?

@galenbean3606 2 года назад

Bootstrap drawn wrong. 5.1k to MOSFET drawn going to + Out. Should be connected to cathode side of 1n4148 to provide MOSFET with enough voltage to turn on.

@johnconrad5487 4 года назад

Something is wrong with the scope waveforms. Some pulses are very small and some are big. you need to check if it is running smoothly or cutting out and oscillation. Try to trigger at the high point of the big pulses and then make the time base 1 mS and look at it. Does it look steady?

@PhdHung 4 года назад

Because it's simple, there's a lot of noise. But it still works fine.

@asadrao5147 Год назад

Two parallel straight line symbol you used is for ceramic capacitor or electrolytic?

@GregOnSummit 3 месяца назад

More info on the tester

@enriquegalleguillo1102 3 года назад

Hola.en la placa de pcb hay una bobina impresa.donde iría conectada? Solo veo el tiroide.buen video .saludos.

@pervineliyev1553 4 года назад

the circuit diagram error problems ground ?

@ramaswamyranganathan9171 2 года назад

Sir coil is getting heat? Why? I have connected 12v 21w 2 bulbs.

@magiclabelectronics8818 4 года назад

Hello sir Please explain the uc3845 pin 5 grounded in you symmetric.. I Do not understand

@fury4076 4 года назад

Another great scheme and project. Btw, what is the title of song in 7:44

@PhdHung 4 года назад

I don't remember its name, I took it in the library of camtasia software 9.0

@HUQKIBAAT 3 года назад

How is pin 5 Ground on the UC3845 in connected to the positive output?!

@jjhack3r 2 года назад

Output voltage is invented. The fly back voltage from the inductor will be negative.

@RAJU-hu8xf 4 года назад

Kindly mention core type.

@lenaroseguera1241 4 года назад

I don't understand how can the ic ground pin be connected to the output, make a the cc cv video please.

@PhdHung 4 года назад

Yes, wait for me

@RAJU-hu8xf 4 года назад

Sir inductance value 50 micro henry how many ampere?

@luiscarlosmarques3946 2 года назад

no current limitier ?

@vctech4954 4 года назад

Can use uc3842 ? please reply sir

@KinhKha-lm2zl 4 года назад

he he he cái này em vẽ luôn mạch in chứ...he he he

@RAJU-hu8xf 4 года назад

Sir, uc2845 & uc 3845 is same?

@RAJU-hu8xf 3 года назад

Sir kindly help this type of converters are all working from 36v and not 24v what is the reason?

@sushillad1051 2 года назад

Irf3205 is 55v volt ,so how is working 80v

@gokulgopal9851 3 года назад

Can I use uc3843 ic

@PhdHung 3 года назад

Ok, u can

@madiharish1678 3 года назад

Sir jest personal input Ac 10 to 50v output Dc 12v this is possible?

@phongnguyenktg 4 года назад

like! Wait for me

@PhdHung 4 года назад

@sunuk1915 4 года назад

Ur captured schematic wrong c #5 of 3845,43,42 is negative voltage , you connect in positive!

@PhdHung 4 года назад

Because it uses mosfet N. So it needs highside driver for mosfet N. Could not connect it to GND.

@BogdanSerban 4 года назад

It won't work with an n-channel mosfet. You need a bootstrapped high side driver for it, or a gate drive transformer.

@PhdHung 4 года назад

it works fine, this circuit has a boostrap capacitor and a diode

@SaliyaRuchiranga 4 года назад

inductor coil diameter ??

@derrickpro4105 3 года назад

If you use any DIY meter in your video like the inductance meter used in this video please share a link to the circuit for someone that needs to build it.Thanks.

@PhdHung 3 года назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-t4SyZxUxDOs.html

@lawalmohammed83 4 года назад

Please Sir,if the input voltage is high but the current is small, could higher current be achieved after stepping down the voltage?

@PhdHung 4 года назад

of course.

@ramaswamyranganathan9171 2 года назад

Sir i have tested with bulb it is working from 24vdc. But if i connect amplifier drawing current 5A it is not working. Why?

@martinbubenik5407 Год назад

Hi is possible to put in 90V 1KW solar panel? thanks

@ramaswamyranganathan9171 2 года назад

Sir, it is not working with 24v battery ? What i will do?

@kunalvadgama9440 3 года назад

Great video Sir, I want 12 Volts, 30 Amps at the output what changes should I make

@PhdHung 3 года назад

using mosfet IRFP4668 and larger diode. Larger inductors

@kunalvadgama9440 3 года назад

@@PhdHung and how to calculate their values sir?

@Nurul_Amin786 4 года назад

12v Module Se 6v input le sakte hai kya...?

@Dkprat310 4 года назад

What is your qualifications sir ?

@circuitrana 3 года назад

your print circuit diagram is worg connection with mosfet????

@filipcipagauta2799 3 года назад

Amigo cómo estás, si yo mismo armo el inductor que calibre de alambre uso? Saludos de Bogotá Colombia

@reimarengellage3676 4 года назад

I/m sorry to tell that I could not get access to Facebook, it's prohibited by our ISP! That applies to all Facebook accounts! as some of your work is very interesting and to be able to follow and try on my own, I need access to the relevant data as Circuits, etc., etc. and it would be very appreciated to get access to another way/location to it, if possible. Thanks for any help and thanks also for your excellent work.

@PhdHung 4 года назад

I use facebook because it's easy to share with everyone, however, if you want any project, I can email you.

@noetech792 4 месяца назад

Vous pouvez placer le schéma dans la description

@FurqanAli-uy5ci 5 месяцев назад

Can i use direct so)ar pannal 24v plat

@arulmurugan7981 4 года назад

Dear bro, it produce 14v output. 30v input. I used 10w led only. When i connect led load output voltage reduce to 6v. As well output not good brightness too. Do u know what is wrong

@RAJU-hu8xf 4 года назад

Sir, pin 5 of 3845 is not grounded as per your schematic . Kindly clear the doubt.

@PhdHung 4 года назад

possible, but the PIN BCE location is different

@RAJU-hu8xf 4 года назад

Sir, pin 5 of ic3845 is not grounded instead it is connected to postive output. Please clarify & suggest for any change in diagam.

@PhdHung 4 года назад

This circuit uses mosfet N, so we need boostrap circuit. Pin5 will not be connected to GND

@RAJU-hu8xf 4 года назад

Thanks for ur response

@RAJU-hu8xf 4 года назад

Thanks for your reply❤

@RAJU-hu8xf 4 года назад

Sir, is that output is variable or fixed ? Also in the pcb there is 2 mosfets but the digram is showing 1 mosfet. Further can i use 3844 in place of 3845?

@PhdHung 4 года назад

1 of them is a diode.

@RAJU-hu8xf 4 года назад

Oh i got it schottky diode.

@RAJU-hu8xf 4 года назад

Sir, pin5 of uc3845 is not grounded in the diagram shown. Please suggest.

@PhdHung 4 года назад

This circuit uses mosfet N, so we need boostrap circuit. Pin5 will not be connected to GND

@RAJU-hu8xf 4 года назад

Thank you so much you are really great my brother.😁👍

@RAJU-hu8xf 4 года назад

Please kindly help i recently purchased similar dc to dc converter & connected 3 nos 12v battery 36v & found output is oscillating. Therefore i connected 4 battery in series to make 48v instantly it is giving 12v output. Please help to suggest how to make it work from 24v ?

@RAJU-hu8xf 4 года назад

Sir. Can you please suggest is this converter will work from 24vdc? The rating display in your video 36v to 80v.

@PhdHung 4 года назад

it can work well at 80V if you use mosfet IRF3710

@RAJU-hu8xf 4 года назад

Please suggest it will switch at 24v?

@kennethcoutinho4439 2 года назад

Drain source voltage is it 100 volt

@RAJU-hu8xf 4 года назад

Sir, pin 5 of uc3845 is not gounded in the schematic diagram. Please kindly reply.

@PhdHung 4 года назад

This circuit uses mosfet N, so we need boostrap circuit. Pin5 will not be connected to GND

@RAJU-hu8xf 4 года назад

Thanks👌

@hemant3388 3 года назад

Sir input 36v - 72v se output 10v- 3amp ka diagram bna skte he ky plz argent chyie

@user-vh2ze4jx4h Год назад

I copied the schematic, but the mosfet heats up quickly on a 1 amp load

@thang1462 4 года назад

Ừm ok

@mdjasimuddin2650 3 года назад

We need a DC DC converter with input (36 to 60v) and Output 24 V 5A to charge 24v battery bank. Initially a piece required for test. If our management accepted your products, then requirement will be 500 to 1000 pcs

@PhdHung 3 года назад

ok bro

@arjunmani4907 6 месяцев назад

I have a 82 v to 12 v dc to dc converter, I had connected it with opposite terminal , afterwards I noticed it.. But now it's showing only 50v ( where it has to show 62v) what will be the problem

@RAJU-hu8xf 4 года назад

Sir, please kindly let me know inductance ampere on 26 turns?