H-bridge motor driver circuit

Discussion in 'Homework Help' started by yifei87, Jan 1, 2009.

  1. yifei87

    Thread Starter Member

    Sep 7, 2008
    hey guys,
    i am now working on dc motor driver using H-bridge connection.
    i am wondering designing a Bipolar transistor H-bridge motor driver is better or FET-tansistor H-bridge motor driver?
    1 more question is bout TC4424. what else components can replace it but giving same or better performance?

    thank you very much
  2. mik3

    Senior Member

    Feb 4, 2008
    I would use MOSFETs because they require negligible input current and they are easily switched on/off.
    However, if your load draws a lot of current and you need a very high drive frequency BJTs have better response (they can switch higher current faster than MOSFETs). The drawback of BJTs compared to MOS is that they require a significant amount of input current if the load needs much current.
  3. SgtWookie


    Jul 17, 2007
    Well, that's just a low-side driver. You'll need a driver capable of high AND low side, one for each side.

    Are you looking to build a driver from discrete components, or are you looking for a replacement IC, or do you want a fully integrated H-bridge in an IC?

    What are your voltage and current requirements?