Benn Ng
Newbie level 6
hi guys,
i would require to control a 3 phase PWM signal using dsp from ti, f28335.
i would like to bulid a circuit that could control the duty cycle. meaning to put a potentiometer in its analog control a0 to vary the reference voltage to output the frequency. by controlling the reference voltage. the output duty cycle will change hence the 3 phase pwm will change it duty cycle with respect to the input of the dsp.
but i could not bulid a potentiometer as i have no knowledge of DSP. please advise.
attached is the 3 phase pwm circuit that is able to produce 3 phase 120deg apart signal.
i would require to control a 3 phase PWM signal using dsp from ti, f28335.
i would like to bulid a circuit that could control the duty cycle. meaning to put a potentiometer in its analog control a0 to vary the reference voltage to output the frequency. by controlling the reference voltage. the output duty cycle will change hence the 3 phase pwm will change it duty cycle with respect to the input of the dsp.
but i could not bulid a potentiometer as i have no knowledge of DSP. please advise.
attached is the 3 phase pwm circuit that is able to produce 3 phase 120deg apart signal.