DIY Buck/Boost Converter (Flyback) || How to step up/down DC voltage efficiently

Рет қаралды 707,975

7 жыл бұрын

Project file on the free design tool: easyeda.com/GreatScott/ATtiny...
Previous video: • Fix It!: Ceiling Lamp ...
Buck Converter video: • DIY Buck Converter || ...
Boost Converter video: • DIY Boost Converter ||...
ATtiny Programming Shield: • Electronic Basics #3: ...
Facebook: / greatscottlab
Twitter: / greatscottlab
Support me for more videos: www.patreon.com/GreatScott?ty=h
Project information (schematic, code, ....) on Instructables:
www.instructables.com/id/DIY-B...
Thanks to EasyEDA for sponsoring this video.
Check out their free circuit design tool here: easyeda.com
Parts list (Amazon.de on Instructables, affiliate links):
Aliexpress:
1x ATtiny85: s.click.aliexpress.com/e/_d6S...
1x MCP602: s.click.aliexpress.com/e/_dZI...
1x 7805 5V regulator: s.click.aliexpress.com/e/_d8k...
1x IRLZ44N: s.click.aliexpress.com/e/_dWh...
1x 100kΩ Potentiometer: s.click.aliexpress.com/e/_dX8...
1x 0.03mH Inductor: s.click.aliexpress.com/e/_dYc...
1x 1N5819 Schottky Diode: s.click.aliexpress.com/e/_dYR...
2x Screw Terminals: s.click.aliexpress.com/e/_dYb...
2x 100nF Capacitor: s.click.aliexpress.com/e/_dU4...
1x 100µF, 1x 220µF Capacitor: s.click.aliexpress.com/e/_d7d...
2x 10kΩ, 2x 5.1kΩ, 2x 20kΩ, 1x10Ω Resistor: s.click.aliexpress.com/e/_dTP...
Ebay:
1x ATtiny85: rover.ebay.com/rover/1/711-532...
1x MCP602: rover.ebay.com/rover/1/711-532...
1x 7805 5V regulator: rover.ebay.com/rover/1/711-532...
1x IRLZ44N: rover.ebay.com/rover/1/711-532...
1x 100kΩ Potentiometer: rover.ebay.com/rover/1/711-532...
1x 0.03mH Inductor: rover.ebay.com/rover/1/711-532...
1x 1N5819 Schottky Diode: rover.ebay.com/rover/1/711-532...
2x Screw Terminals: rover.ebay.com/rover/1/711-532...
2x 100nF Capacitor: rover.ebay.com/rover/1/711-532...
1x 100µF, 1x 220µF Capacitor: rover.ebay.com/rover/1/711-532...
2x 10kΩ, 2x 5.1kΩ, 2x 20kΩ, 1x10Ω Resistor: rover.ebay.com/rover/1/711-532...
In this project video I will show you how a buck/boost converter (flyback) works and how you can easily build one that can step up and step down DC voltage efficiently.
Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod (incompetech.com)

Пікірлер: 697

@boblablablaw6677 7 жыл бұрын

Best one yet. Brilliant video. It really helps the visual learners when you laid out the components on the diagram. My son finally got it! This really put all the pieces together in a great package. It is a wee bit fast, but honestly no issue since you can pause and play as needed. Well done!

@anwin85alon 19 сағат бұрын

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@zen29d 6 жыл бұрын

Since I'm already pursuing EE, your videos and its depth of knowledge are always ready to put me in action. Thanks for your existence.

@anwin85alon 19 сағат бұрын

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@purplespower9730 8 ай бұрын

Your videos changed my life! I wouldn't be where I am at this point if it weren't for these amazing tutorials.

@anwin85alon 19 сағат бұрын

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@p1nesap 7 жыл бұрын

You seem to have your passion, friend. And you're damn good at it.

@anwin85alon 19 сағат бұрын

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@alanlaiju3084 7 жыл бұрын

Great Scott! You just earned yourself a new subscriber. Your videos are so informative.

@uvlight 7 жыл бұрын

Great video as always. I like how your videos are structured, it explain things at the beginning, then do the practical stuff. As usual, your video give me better understanding on electronics.

@anwin85alon 19 сағат бұрын

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@HoffmanEngineering 7 жыл бұрын

Great video! I love these videos because they pack so much information into a relatively short video. Keep up the great work!

@anwin85alon 19 сағат бұрын

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@CharlesAugustosc 7 жыл бұрын

Sensational! I love this kind of content. Congratulations for the video!

@devwatts 7 жыл бұрын

I am 100% Sure That Great Scott Will Go really really Far. Best wishes man. :))

@luongmaihunggia 6 жыл бұрын

He is near one million subscribers now.

@JasonBaldwin301 5 жыл бұрын

He's at 1 million now.

@leplayz4499 4 жыл бұрын

@leafonabreeze 1.19

@youssefdirani 4 жыл бұрын

1.25

@user-co7do9nz9s 3 жыл бұрын

@@joa4935 1.47

@00xero 7 жыл бұрын

Awesome man, love your videos! I can't really keep up with them all the time, so I have to pause and research every so often, but that is way, way better than having a 30 minute video that goes into every excruciating detail.

@anwin85alon 19 сағат бұрын

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@jimbobillybob1959 7 жыл бұрын

Awesome engineering & teaching as usual!!

@agrxdrowflow958 7 жыл бұрын

I had no idea such a thing existed. Thank you!

@RaihanSergi 4 жыл бұрын

Dude's great effort then this video making my day with my project. Good Luck Scott! and thanks!

@willyhoogs 7 жыл бұрын

Still watching! Great vids!

@davidprice2861 7 жыл бұрын

Gee, that is quite innovative. very clever, and the video fast yet very informative. Thanks, I enjoyed it...

@habtamusium8646 Жыл бұрын

interesting working principle of boosters circuitry. many thanks !

@lds22222 7 жыл бұрын

You are doing a great job with this tutorials. Keep it up :-D

@danielbraphtgoint3165 Жыл бұрын

thank you very much. please keep making these videos. they are very appreciated!

@NicholasAarons 7 жыл бұрын

Fantastic Video Dude. Keep up the great work. Nick.

@escapadechannel8379 7 жыл бұрын

Your truly great , left when the channel had 100 k subs , Great man now your have Half a mil . Keep up the great job scott .

@anwin85alon 19 сағат бұрын

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@tunckuyel 4 жыл бұрын

I am sooo beginner for your projects most of the time. I wish i fully understand. But when i am not that a beginner you are like an enclopedia for me :)) thanks again man

@anwin85alon 19 сағат бұрын

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@Spacejorma 7 жыл бұрын

Im not building anything, no fking clue what hes talking about...still love to watch these videos. :D

@fidelcatsro6948 3 жыл бұрын

hes talking about buck rogers and the temple of doom

@zm7160 7 жыл бұрын

This is an outstanding video. Great stuff.

@fristpain9895 7 жыл бұрын

Scott you are the best .

@planedo79 6 жыл бұрын

This dude is Einstein the second :) keep up the good work!

@seeithappen1 2 жыл бұрын

Great video, thanks for uploading

@Rizon1985 7 жыл бұрын

We appreciate the work you put into preparing and drawing those schematics while explaining it. Never doubt that.

@anwin85alon 19 сағат бұрын

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@vlcekmlcek3393 7 жыл бұрын

Very nice video. Now I know, how are the China boost converters exactly working. Thanks for it!

@Ben-cb7uq 7 жыл бұрын

Finally somebody explained what voltage feedback means! Keppp up the good work!

@anwin85alon 19 сағат бұрын

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@jimadams2473 7 жыл бұрын

Another fantastic video. I am going to try all three projects; Buck, Boost and the Buck/Boost. Very nice instructions.. Thanks

@anwin85alon 19 сағат бұрын

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@abhi0495 7 жыл бұрын

I was expecting this video to release finally it has come

@anwin85alon 19 сағат бұрын

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@naami2004 7 жыл бұрын

Great video! as always :)

@Bob3519 7 жыл бұрын

Great video. Thanks for sharing.

@sergiomonzon8539 3 жыл бұрын

Hola saludos desde Guatemala muy buen canal!!!

@hurtadoa1 7 жыл бұрын

I have to say, everytime I see you explaining and creating diagrams of circuitry, it sparks my interest in learning more about it and being able to reach that knowledge you have as well (someday) Any recommendations of things to learn to be able to be on the right track?

@ElGatoDany 7 жыл бұрын

you are so smart bro, greetings from chile 👋👏✌

@gabrielflorit4470 7 жыл бұрын

great video, as always

@AllanUchoa 7 жыл бұрын

it is incredible the way you clearly make things easy

@anwin85alon 19 сағат бұрын

pm me can you to install do solar panel of charger,

@zaneyoumans2923 7 жыл бұрын

You deserve more subscribers. Superb quality videos that are very informative and easy to understand.

@anwin85alon 19 сағат бұрын

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@janmezulianik8508 6 жыл бұрын

Could you please make a video about how to build your own cc/cv power source? I mean building it from scratch. Thank you a lot. Btw. Your videos are so good and helpful. You brought me into electronics.

@andrehoogeland3234 7 жыл бұрын

great tutorial, thanks!

@fatonisodiq9341 5 жыл бұрын

great scott, great video

@jarrettdoesstuff2318 7 жыл бұрын

cool! I have some attiny85s coming in soon so maybe I'll have to build one.

@Filaxsan 7 жыл бұрын

Great - and i mean GREAT! - video! Thanks for sharing! :))

@1Robbie75 7 жыл бұрын

what can I say more? GREAT SCOTT!

@kevindelima4829 7 жыл бұрын

I have no idea But I really enjoy you soldering.great vid

@ThirdPer3on 7 жыл бұрын

Very nice!

@fi89298 7 жыл бұрын

Great tutorial :D

@pawel4066 6 жыл бұрын

Ficraft Skowyrsyn

@fdsgsdghgbsdgsd2275 7 жыл бұрын

REALLLLLLLLLLLLLLLLLLY LIKE IT

@mdsatter1306 7 жыл бұрын

Amazing video thanks

@ricardocubias7297 7 жыл бұрын

Nice video Your channel is very interesting

@MobiusHorizons 7 жыл бұрын

Very interesting video, I had no idea you could create a buck/boost with only one inductor.

@hardrocklobsterroll395 7 жыл бұрын

easy eda

@erastescientifique9213 5 жыл бұрын

You're amazing. Thank.

@rinimadeven8082 7 жыл бұрын

Great, explanation, nice tutorial

@greatscottlab 7 жыл бұрын

Thanks

@saminasir6012 7 жыл бұрын

Great video! Kinda informative

@usmani93 7 жыл бұрын

nice work!

@yelenaantipova3964 7 жыл бұрын

I don't know what you are doing, but it looks fun

@alashiya9536 7 жыл бұрын

Hi Great Scott, can you make a video about a UPS design for providing battery backup for DC devices such as routers, switches, access points etc? Kind of like a battery charger circuit combined with a SMPS

@liyz7142 7 жыл бұрын

good video!

@wilddog1979 7 жыл бұрын

Great video and explanation. Thank you, I really appreciate it. I wonder in the same time if ATTINY85 could be replaced with something else and increase the efficiency through that solution?

@Andrea_Selena 7 жыл бұрын

Deine Videos sind simple und gut zu schauen. Und dein Vorgehen ist super, erst Grundlagen, dann Bau ist genial. Nutzung der Englischen Sprache hilft auch ne Menge.

@qzorn4440 3 жыл бұрын

Gee.. i am still learning LTspice and setting up various circuits for some practical experience? Soo... greatscott... this seems like a good one to simulate... thanks...:)

@ricolauersdorf687 Жыл бұрын

The designs problem is, that the output has always the mosfet/inductor switching voltage as an offset to the input. that can lead to serious emc/radiation problems. by switching the diode and the cap, you solve the problem, ending with a standard boost topology which has the input+ voltage as gnd- for the output voltage. just the absolute opposite to the flyback. the main differences between all 4 possible combinations are if the input can be capacitor referenced to the output, if we need high side switching and if we need galvanic isolated dc voltage level to power on an additional "output on/off" mosfet. there is not the best design (otherwise the others were not in use). Thanks for your guides and tips :)

@teyjingwoon 7 жыл бұрын

Brilliant !!!

@kakadu2685 7 жыл бұрын

Just thinking about it :)

@carlosagorreta5276 6 жыл бұрын

This is an excellent project for an engineering student.

@anwin85alon 19 сағат бұрын

pm me can you to install do solar panel of charger,

@JOELwindows7 7 жыл бұрын

Wow, I got it. thx

@MDFRESCUER 7 жыл бұрын

Good video.

@buddhadebdutta6289 6 жыл бұрын

Great video. Liked it. Can you show how to make an emp jammer

@Fosforitofercho 7 жыл бұрын

This is that i search for weeks, and is best, i want to convert an ATX power supply in lab source and intelligent charger, with this I feel that i can reach my purpose

@PU6NPC 6 жыл бұрын

Very good

@anandmohan6412 5 жыл бұрын

I can say that the rather low efficiency of ur circuit is due to the 7805 linear regulator used to power the attiny with 5 volts. You could use a smaller Buck converter module for that but that'll totally destroy the diy aspect. Great work as allways

@Dryadwoods 7 жыл бұрын

Just found your channel today and subscribed, I will need to see all your old movies now :) Thanks for sharing them with us.... Note: not all of us have an +11K euro oscilloscope, 500 Euro multimeter, etc.... I assume this is not only an hobby for you.

@anwin85alon 19 сағат бұрын

pm me can you to install do solar panel of charger,

@yetanother_guy8438 7 жыл бұрын

Great video, I was wondering if the commercial buck-boost board you show at the beginning has a different type of circuit than you make? I noticed that it has two inductors on it unlike your design.

@zsjun2722 5 жыл бұрын

This video is good!!!!!!

@xanderhover2645 7 жыл бұрын

Nice video! Why didn't you try a building a SEPIC step up/down converter?

@homelessguy6947 7 жыл бұрын

awesome ..keep it up

@facundopacini1591 5 жыл бұрын

Great job! I got a question. Where should i connect the Load in the N-Mosfet circuit? Is there a way to turn-off the circuit if i drive it with a micro?

@ddtdanilo 7 жыл бұрын

Hey, thanks. You could do a MPPT with that circuit for solar applications. Just an idea!

@marcossoto1616 4 жыл бұрын

Thanks for your contribution to the development of knowledge, I have learned a lot about this type of switched sources. Tip: You may be able to extend your tutorials to design half brigde or push pull converter topologies. Thank you!!

@anwin85alon 19 сағат бұрын

pm me can you to install do solar panel of charger,

@lukalopin 4 жыл бұрын

Great video man! Thanks for sharing practical knowledge. The position of the switch must be on the low side for practical reasons. With high side switch, there will be negative voltage on the source when diode is conducting and you can not use bootstrap method to drive the MOSFET than. You saved me time, thanks again.

@anwin85alon 19 сағат бұрын

pm me can you to install do solar panel of charger,

@AhmedAli-sn3ty 6 жыл бұрын

Scott can you make more projects in one week . I will be very thankful to you if you do. your projects are worth apprectation. It is very learning for students.

@anwin85alon 19 сағат бұрын

pm me can you to install do solar panel of charger,

@timolibo 7 жыл бұрын

nic3eeeeeee! thats what I actually need

@TT-fv3mk 7 жыл бұрын

First best youtuber

@youssefdirani 4 жыл бұрын

Thanks a tons

@tctrainconstruct2592 5 жыл бұрын

2:00 You could set a 50% duty cycle for the 1st switch and then only regulate the boost part.

@CyberSpace100011 2 жыл бұрын

Another great video... Question: You calculated the efficiency of your own buck/boost converter at 80% on the boost or buck side... is that about the same as a standard commercial buck/boost? If not.. .how do commercial manufacturers accomplish higher efficiency? ... and thanks for the insights.

@control226 7 жыл бұрын

No soy muy bueno con el inglés, pero es emocionante ver tus vídeos. Saludos!

@anwin85alon 19 сағат бұрын

pm me can you to install do solar panel of charger,

@giacomo1191 7 жыл бұрын

Hi scott! Another great video! Amazing!! I have one question, could be a good idea use this circuit instead of the LTC3780 in the previous bench power supply project ? are there any disavantages ?

@prabhadevi7762 5 жыл бұрын

Nice video thank you sir , is necessary to use microcontroller

@zaidhussain5206 7 жыл бұрын

Thank you so much

@ziadfawzi 5 жыл бұрын

Thank you.

@MrMattemac 7 жыл бұрын

Nice Video as always ! 👌😀

@greatscottlab 7 жыл бұрын

Thanks ;-)

@hardrocklobsterroll395 7 жыл бұрын

what pens do you use

@hardrocklobsterroll395 7 жыл бұрын

thanks

@user-vh6nv1fs8p 7 жыл бұрын

👍👈👉✌😐😕😶😯😟😦😧😎😘

@herrnamenlos1238 7 жыл бұрын

fineliner

@user-wq6gk6vr6b 6 жыл бұрын

Please make video about buck/boost converter with output voltage and current adjustment. How to adjust the output current and support constant output voltage simultaneously?

@akshitsharma2737 4 жыл бұрын

WELL! i watches this video, understood the basic concept,nothing else

@ThomasHaberkorn 7 жыл бұрын

Hi, great video! Could you do an add-on on how to control the output voltage using the PWM of an Arduino?

@AmardeepSingh-gv1ut 6 жыл бұрын

nice work friend. will continue checking out your videos for more learning on my practical hand. M also interested to make something new. please share if you have any new project.

@chandanpiku 5 жыл бұрын

Great video just like Great Scott.....but is it possible to achieve the same results without any microcontroller?

@christopherweston6028 7 жыл бұрын

Love the videos. I have a question I think you could answer quickly for me. In terms of efficiency and energy waste, Charging with wind or solar )low voltage(, would it be reasonable to charge the cap bank closer to 75% of it's max only to bump back down to a lower voltage on the load? would this extend the time or just waste energy in the conversion?