How To Build A 5V Buck Converter

6 Jan 2021

When you're building a project that has multiple modules with different voltage requirements, you may need to build a 5V buck converter. This video walks through the process to build a converter that will take up to 40V input down to 5V at up to 5A, and you can get the schematic as well as the necessary parts in the show notes below!

PARTS/TOOLS:

https://www.newark.com/tdk/slf10145t-220m1r9-pf/power-line-ind-22uh-1-9a-20/dp/90R0605

https://www.newark.com/nichicon/upw1c181med1td/aluminum-electrolytic-capacitor/dp/65R3976

https://www.newark.com/vishay/vs-6tq045s-m3/schottky-rectifier-45v-6a-to-263ab/dp/68AC5624

https://www.newark.com/vishay/k474z20y5vf5th5/ceramic-capacitor-0-47uf-50v-y5v/dp/27X7721

https://www.newark.com/vishay/d103z25z5vf63l6r/ceramic-capacitor-0-01uf-50v-z5v/dp/80K9840

https://www.newark.com/panasonic/eea-ga1h150/aluminum-electrolytic-capacitor/dp/83T6876

https://www.newark.com/texas-instruments/lm2678s-5-0-nopb/step-down-regulator-to-263-7/dp/41K4192

RESOURCES:

Attachments:

	lm2678.pdf
5vbuck.fzz.zip

Parents

celcius1 over 3 years ago

Excellent work Matt, but these buck converters are available off the shelf, pretty much the same design, Ill attach the link where I can get it in Australia, which is Altronics, and they do a lot of there purchasing from element14 https://www.altronics.com.au/p/z6334-dc-dc-buck-module-3-40v-input/

So I hope this helps.
- Cancel
- Vote Up 0 Vote Down
- Sign in to reply
- More
- Cancel

Comment

celcius1 over 3 years ago

Excellent work Matt, but these buck converters are available off the shelf, pretty much the same design, Ill attach the link where I can get it in Australia, which is Altronics, and they do a lot of there purchasing from element14 https://www.altronics.com.au/p/z6334-dc-dc-buck-module-3-40v-input/

So I hope this helps.
- Cancel
- Vote Up 0 Vote Down
- Sign in to reply
- More
- Cancel

Children

No Data