Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Help with an h bridge controller

  1. Dec 20, 2006 #1
    i'm using p type mosfets for an r/c cars h bridge controller (the two n types have been replaced with p types because of thier lower internal resistance) and was wondering if there is a way to do it with out voltage pump circuits that stills alllows a P.W.M. torque controller.
     
  2. jcsd
  3. Dec 20, 2006 #2

    berkeman

    User Avatar

    Staff: Mentor

    So you're using p-type mosfets for the low-side switches as well?

    EDIT -- I would have thought the n-fets would have better performance. What are the devices?
     
  4. Dec 20, 2006 #3
    large 1:4 scale r/c car and use a LOT of current the difference in the internal resistance was becoming a problem in heating, and srry it was n types just i was typeing without thinking
     
    Last edited: Dec 20, 2006
  5. Dec 20, 2006 #4

    berkeman

    User Avatar

    Staff: Mentor

    Okay, so you want to use n-channel power MOSFETs for the high-side switches instead of p-channel. Hmmm, gotta think about that one. Do you have a pointer to the n-channel device datasheets? And maybe one to the p-channel FETs that you are trying to replace.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Help with an h bridge controller
  1. H-Bridge help (Replies: 3)

  2. H-Bridge for DC Motor (Replies: 1)

  3. H bridge Inverter (Replies: 1)

Loading...