PWM Controller

Discussion in 'General Electronics Chat' started by Jim_2.0, Feb 14, 2007.

  1. Jim_2.0

    Thread Starter Well-Known Member

    May 14, 2006
    Hi guys

    we currently produce a 24V PWM output using a 5V PWM output from a microcontroller and then use our own circuit to gain the 24V we need.
    In a new design we are wondering if there are any dedicated chips that take a serial input and give a PWM output. Kind of like a DAC i guess but with a variable PWM output rather than analogue voltage. There are plenty of PWM driver chips around such as the burr brown DRV103 but we would like a serial interface rather than analogue.

    anyone know of something that may help??
  2. Papabravo


    Feb 24, 2006
    I think your best bet would be a microcontroller with an SPI port and a PWM output. This approach is straight forward and the implementation would be most cost effective. The unit cost in volume might be less than $1.00 US. It would also be the case that with Flash memory for programs you would not have to inventory preprogrammed chips. I'd be glad to quote such a design for you.