PWM with options for changing dutycycle & frequency

Discussion in 'The Projects Forum' started by karunanithi_pricol, Aug 22, 2006.

  1. karunanithi_pricol

    Thread Starter Member

    Mar 13, 2006
    Hi All
    I am planning to design a test jig, Which will give square wave PWM output with the options for changing both frequency and duty cycle(I have to provide a mode switch for selection). By using the up/down keys the user can set particular frequency or duty cycle.

    Depends on the user setting i have to display the frequency&duty cycle in the lampex (16X2 Character) LCD.

    Frequency range - 1Hz to 5KHz
    Duty cycle range - 0% to 100%
    Load current range - Max 3A at 12V magnitude.

    I am planning to use a PIC micro controller, Can any one suggest me a suitable controller for this logic. Is there any reference design for this application.

    Thanks in advance