0 Replies Latest reply on Oct 22, 2012 10:53 PM by rqiu

    3 Wire Fan Controller

    rqiu

      This component is a variant of the 4 wire fan controller available in PSOC Creator. In 3 wire fan application, power is not constant applied to the fan so a "PWM stretch" technique is used to measure fan speed. PWM stretch basically expend the high period of the PWM pulse so that power is applied to fan while speed measurement is taking place.