Diy bec - RC Groups
Shop our Airplanes Products Drone Products Sales
Thread Tools
Jun 05, 2012, 09:42 PM
Registered User

Diy bec

I'd like to know how to make my own bec, but i have a problem it have to be 48v to 5v with like 100A.
Thats something difficult to find.
Can somebidy give me some material so that i can learn more abou high current BEC's
Sign up now
to remove ads between posts
Jun 06, 2012, 12:40 AM
"Simplify, then add lightness"
Again, you are asking beginner questions about building things that are definately not beginner projects. If you would describe what you are doing and why you need to build it yourself you might get more help.

BEC is a term used mostly in RC modeling. It is really just a step down DC to DC converter. To handle converting from 48v to 5v/100A you need a switch mode DC to DC buck converter. At 5 volts and 100 amps, you are talking about a 500 watt converter. That is somewhat more power than the typical power supply in a personal computer, so if you have ever seen a PC power supply that is the size and complexity you are talking about.
This app note describes some TI chips for switching power supplies and the last schematic is exactly what you say you want, a 48v to 5v/100A converter. You can see how complex it is, and the odds of a beginner building something like that and getting it working are very slim.
Jun 06, 2012, 04:22 AM
We want... Information!
Bruce Abbott's Avatar
Do you really want 100A at 5V, or 100A at 48V with a 5V control port (eg. Kelly KEB48220 100A 48V)?

What do you need it for?

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
using parallel LM2940 for DIY BEC? spastic DIY Electronics 33 Jun 18, 2009 07:00 PM
Discussion Need some DIY help looking for a BEC Ping DIY Electronics 7 Oct 15, 2007 12:59 PM
Discussion DIY switchmode-BEC Inflexo DIY Electronics 56 May 12, 2007 05:28 AM
Discussion Question: DIY BEC and Lipo's ek123 DIY Electronics 3 Mar 10, 2006 05:40 PM
bec diy esc, how much current is needed? plane_spotter DIY Electronics 9 Jun 16, 2004 08:13 AM