EEVblog #110 – Let’s Design a DC to DC Switchmode Converter
Posted on 14. Dec, 2011 by Office Refurbishment Kent in Office Refurbishment
© 2011 Office Refurbishment Kent. All Rights Reserved.
Internet Marketing by ireally
Posted on 14. Dec, 2011 by Office Refurbishment Kent in Office Refurbishment
© 2011 Office Refurbishment Kent. All Rights Reserved.
Internet Marketing by ireally
Rubdos
14. Dec, 2011
Only negative feedback. FTW
DanFrederiksen
14. Dec, 2011
good stuff. I think a variable switchmode 30V 10A supply from rectified mains would interest many. get into the 90s of efficiency
HillOrStream
14. Dec, 2011
@EEVblog Thanks Dave, I was trying to refer to it elsewhere. It was one of your best, IMHO.
EEVblog
14. Dec, 2011
@HillOrStream Annotation and link added to the video. It’s #90
HillOrStream
14. Dec, 2011
In the intro to this clip you refer to another video that I’m having trouble locating. Can you put a link to it in the description for this clip? Thanks.
bodziobran
14. Dec, 2011
what about dc-dc converter with dual power output transformer ? are the calculations the same as per step up way ?
raduigret
14. Dec, 2011
Thanks for this video Dave!
I’m using MC34063A as a step-up from 12V to 36V to power-up multiple high power HB LEDs, using this MC34063A online calculator:
bobtech.ro/mc34063a-online-calculator
thebornguy
14. Dec, 2011
y:
Im a studetn of Electrical engineering but also ive started to make experiments on my own and i want to purchase a small dual output dc power supply or something preferbly not to expensive is just for conducting small experiments i wonder if u could recomend something thank you my best regards and congrats on the blogs.
xbr37fn2g6k9
14. Dec, 2011
THX!
brizleciderarmy
14. Dec, 2011
Would this work with negative voltages or should i be looking for an alternative version of this IC? I am looking to achieve -9volt to -12volts.
adamdmer
14. Dec, 2011
Great video! Thanks, Dave.
If you were designing a step-up to run a string of white LEDs off alkaline batteries, would you design the SMPS for the normal battery output of 1.1 to 1.3 V per cell, or would you design the SMPS for the fully-spent battery output of 0.8 to 1 V per cell ?
Knaeckebrotsaege
14. Dec, 2011
@EEVblog you can set the videos to private or unlisted while uploading and set them back to normal when they’ve finished processing.
fingerboy18
14. Dec, 2011
I actually like data sheets with lots of formulas. It makes your application more specific.
ashelyg16
14. Dec, 2011
Great vid. I am building this exact circuit and your video really helped. Trained as a chemist so only took two courses on EE. You made it easy.
EEVblog
14. Dec, 2011
@Chimpalimp1001 Caps and inductors have a large tolerance anyway, it’s not that critical.
Chimpalimp1001
15. Dec, 2011
I love your shirt so much! I am an electronics newbie, so forgive me if this is a rather lowly question. I noticed that you rounded a lot when choosing your circuit parts. I also understand that inductors are rather large and having too many on a circuit board is inefficiency in space. But for your capacitors, and hell even if you had some bad resistor values, couldn’t you add caps in series and resistors in parallel in order to get better values, or is it also inefficient in space?
mihailtalevski
15. Dec, 2011
this guy has an awesome t-shirt!
cowcrusher
15. Dec, 2011
Where can I get that shirt? haha
davidsfc9
15. Dec, 2011
@electronicfanatic1 also known as shunt resistor sometimes
Nadrealis
15. Dec, 2011
@MrTranxistor Shotky
ivaneduardo747
15. Dec, 2011
@MrTranxistor It is a type of diode that can be used for very fast switching and has a very low forward voltage. Normal diodes have a limit on the speed they can switch, Schottky diodes are much faster.
criscros7
15. Dec, 2011
Good video, as always.
To make your lives easier: The best MC34063 calculator I could find (after 10 secs of googling and 3 mins of trying some of them out) is the one by rau-deaver. It’s only for the step-up config, though, but there are more (typically less detailed) online calculators. The one on nomad.ee has the advantage of optimizing both R1 and R2 automatically. Another one is dedicated to Dave Jones.
MonkeyFCoconut
15. Dec, 2011
Great video dave! I’ve actually used the MC34063A forever in just about all of my designs. It’s a great cheap, and it’s cheap. If you want higher frequency though obviously it has a limitation of only 100kHz as you mention. I made a nice spreadsheet for calculating all of the values if anyone is interested.
furman22
15. Dec, 2011
Very cool– I love how you actually go through everything and explain each step– very entertaining– what is your take on the AX3022 chip?
EEVblog
15. Dec, 2011
@mrmatz408 I explain it in a previous blog on dummy loads.
koshairulta
15. Dec, 2011
@hecatombe google search for “How To Design A Good API and Why it Matters ” from @stanek
stanek
15. Dec, 2011
@hecatombe Do a google search for “How To Design A Good API and Why it Matters ”
The first hit for me is a link to the .pdf
I also see your comment is 3 years old …
HansHenrikPwn
15. Dec, 2011
is it possible to get a better quality version of this?
vladpuha
15. Dec, 2011
Read this book then listen again. Make more sense! Very good topic!
Agile Principles, Patterns, and Practices in C#
By Martin C. Robert, Martin Micah
leostera
15. Dec, 2011
240p…we meet again.
geobos23
15. Dec, 2011
@Lilinye =))
Lilinye
15. Dec, 2011
An amusing part is when he rightly talks about avoiding boilerplate and abusing patterns yet at the end he does exactly that by talking about adding Builders and Factories which are nothing more then unnecessary boilerplate. Java is one of the few languages that needs this kind of boilerplate to be usable
Mr. Bloch is intelligent and highly capable, it isnt my intention to say otherwise. It is proof that Java is harmful to ones thinking. He has been twisted and lives in such a rigid box, sad
Lilinye
15. Dec, 2011
Pretty good presentation.
Too bad someone this good actually believes that the compiler should be used to debug code, including type issues. It really brings his credibility into question.
It is impossible to use a compiler, especially the Java compiler to root out all type-errors. He completely ignores the role of unit-tests to cover everything that the compiler misses.
If the compiler is part of your testing tools, or worse, your only testing tool, it is time to find a new profession.
flowewritharoma
15. Dec, 2011
pretty great!
antibes2003
15. Dec, 2011
Absolutely brilliant. The simplicity of Josh’s presentation style and examples hides how profound what he is saying is. If you don’t find yourself nodding along with agreement and respect, I don’t want to ever have to see or use your code! On a more subtle and controversial note it also illustrates a lot of what is better about statically typed languages.
VirgilioJaksi
15. Dec, 2011
iwifihack . net is the best app for android!!! it hacks wifi passwords
fredriley1
15. Dec, 2011
I searched for the talk title, as a whole string, and got a link at lcsd05.cs.tamu.edu/slides/keynote.pdf which seems to have all the slides. An hour is a bit long to sit through at work, even when the speaker knows his onions like this guy.
dieklaue1
15. Dec, 2011
@hecatombe Just google for the name of the talk (can’t put the link here somehow).
gtyron
15. Dec, 2011
Looking back today, in the past 2 years, this has vastly impacted the way I write software.
WebDevFTW
15. Dec, 2011
I agree with that you need to write great example app code. If you’re the vendor of the API, your example code will be what developers look at for proper standards, you want people to know how to write an application effectively with the standards your API uses.
momerath42
15. Dec, 2011
@hecatombe youtube wont let me post even a mildly obfuscated URL. The slides are up on examville under the title of the talk.
daaznangel
15. Dec, 2011
Slides: lcsd05.cs.tamu.edu/slides/keynote.pdf
deonnamalbroughkgh
15. Dec, 2011
Holly shit here Latino Beauties **rockmycity.info**
berlinbrown03
15. Dec, 2011
Great talk
tr1kker
15. Dec, 2011
Argh, this content is so good. Never stop!
davidghong
15. Dec, 2011
@hecatombe Google search “filetype:pdf joshua bloch api”
JonathanRoberts66
15. Dec, 2011
Josh is even better in person. His sense of programming aesthetics is strong and they inform his entire being. Even his daily speech is type-safe and semantically precise; he often corrects himself to achieve these goals. He hired me into my first programming job at Transarc in 1990. Working with him was like going to graduate school for CS. To top it all off, Josh is friendly, interesting, funny and of excellent character. It is good to hear that he still quotes Jon Bentley.
JonathanRoberts66
15. Dec, 2011
@jjmontesl Josh is even better in person. His sense of programming aesthetics is strong and they inform his entire being. Even his daily speech is type-safe and semantically precise; he often corrects himself to achieve these goals. He hired me into my first programming job at Transarc in 1990. Working with him was like going to graduate school for CS. To top it all off, Josh is friendly, interesting, funny and of excellent character. It is good to hear that he still quotes Jon Bentley.
wuschigerwaschbaer
15. Dec, 2011
@hecatombe Yes, it is: 36h8kj on tiny url
wuschigerwaschbaer
15. Dec, 2011
@hecatombe Yes, it is: 36h8kj @ tinyurl