Brushless DC design sanity check

Discussion in 'The Projects Forum' started by dpeterson3, May 11, 2011.

  1. dpeterson3

    Thread Starter New Member

    Oct 9, 2009
    Hi. I am trying to build my own ESC to drive brushless DC motors from scratch. I eventually want to use them on a quadrotor, but that's another project. I think I have the hardware design down, but I want to make sure before I get the parts and build a board. I attached a schematic of my design and the LTSpice output using two pulsed voltage sources as inputs (V2 and V3). The first is the currents across the delta load and the second is the voltages across the load. I think the currents are showing the correct output. The fact that the voltage spikes all line up is what is making me question. Comments/advice is very welcome.