An asymmetrical ramp generator system for a pulse width modulator includes a complementary clock circuit; a first symmetrical dual ramp generator, responsive to the clock circuit, for generating first and second ramps having a predetermined voltage range and extending for a period equal to or greater than one half the clock cycle; a comparator device, responsive to the first and second symmetrical ramps and to a reference level within the predetermined voltage range of the first and second ramps, for generating corresponding dual first and second asymmetrical drive signals; and a second asymmetrical dual ramp generator, responsive to the first and second asymmetrical drive signals, for generating third and fourth asymmetrical overlapping ramps which extend beyond the predetermined voltage range.