According to an exemplary embodiment, a driver circuit for generating a reset pulse of an output waveform includes a plurality of ramp paths, each ramp path being configured to control the slope of the reset pulse. The driver circuit also includes a falling switch configured to selectively hold the output waveform low. The driver circuit further includes a switch controller for selectively enabling the plurality of ramp paths and the falling switch to generate the reset pulse. The switch controller can selectively enable the plurality of ramp paths responsive to a reference setting signal to select the slope of the reset pulse. The driver circuit can also generate a sustain pulse. The driver circuit is can generate the reset pulse and the sustain pulse by driving a transistor.