Has anyone used a DC to DC buck converter?

Got something to discuss that's not about Blackmagic products? Then check out the Off-Topic forum!
  • Author
  • Message
Offline

Leon Benzakein

  • Posts: 865
  • Joined: Thu Aug 15, 2013 3:40 pm

Has anyone used a DC to DC buck converter?

PostMon Oct 29, 2018 1:37 pm

I am looking at using a buck converter to convert and regulate 24 volts DC down to 12 volts DC. :ugeek:

Apart from smoke and sparks, is there anything else I should be aware of? :cry:
Last edited by Leon Benzakein on Thu Nov 01, 2018 1:43 pm, edited 4 times in total.
Television: Lighting/Cameraman, O.B. Camera Operator, Grip, Lamp Operator
Film: Grip, Lamp Operator
Theater: Lighting Designer, Light board Operator, Stage Electrician, Stage Management
Offline

Andy Coulthurst

  • Posts: 74
  • Joined: Thu Apr 21, 2016 12:04 pm

Re: Has anyone used a DC to DC buck converter?

PostMon Oct 29, 2018 2:34 pm

Current requirements.
Heatsinking ( depends on current requirements ).
Switching noise.
Regulation.

Find a friendly electronics engineer - especially if you are considering connecting to anything expensive :)
Offline

Asgeir Hustad

  • Posts: 113
  • Joined: Tue Sep 26, 2017 10:13 am

Re: Has anyone used a DC to DC buck converter?

PostWed Oct 31, 2018 12:35 pm

Ensure you are either using polarized connectors or double-check polarity when making the connections 8-)
Offline

Leon Benzakein

  • Posts: 865
  • Joined: Thu Aug 15, 2013 3:40 pm

Re: Has anyone used a DC to DC buck converter?

PostThu Nov 01, 2018 1:43 pm

My thinking behind the question.



Television: Lighting/Cameraman, O.B. Camera Operator, Grip, Lamp Operator
Film: Grip, Lamp Operator
Theater: Lighting Designer, Light board Operator, Stage Electrician, Stage Management
Offline

WarthogARJ

  • Posts: 2
  • Joined: Sun Dec 02, 2018 1:47 pm
  • Real Name: Alan Jarvis

Re: Has anyone used a DC to DC buck converter?

PostSun Dec 02, 2018 3:21 pm

You can find lots on eBay.

But you will need to have a heat sink and maybe a fan to help it, because you have a pretty big difference in input volts of 24 to output, and that is proportional to the heat that the system has to dissipate.
So depending on your current, it could be quite a bit.

That's why if you look at these two units, the 10Amp one has cooling fins, and the 5Amp one does not.
Do a search on eBay UK for this:
"Car Converter 24V To 12V 5A 60W Step Down Module DC To DC Buck Module"

And this:
"DC-DC STEP-DOWN BUCK CONVERTER 24V 12V TO 6V 10A 60W TRUCK CAR W/PROOF HEATSINK"
But in fact the actual converter unit in both cases is the same.

An even more dramatic example is this listing for various converters.
If you look at how the cooling increases dramatically as the current increases, it shows the same story.
Search on eBay UK for this:
"24V 12V 13.8V 5A 10A 20A 30A 40A 50A 60A 80A 100A DC DC Converter Buck Regulator"

Note: I originally used the URL option, but I got a warning message "Not allowed to post URL's".
Eh????
I've never seen a forum that blocks URL's.
Alan Jarvis
Sheffield

Return to Off-Topic

Who is online

Users browsing this forum: grimmpersonal and 3 guests