High frequency pulse width modulation shaping

A method for generating pulse width modulation (“PWM”) pulses each with specified duty cycles, the method comprising:

• determining a duty cycle for a specified PWM pulse to be generated;
• determining a first measurement of a ratio between a PWM clock signal and an internally generated clock signal;
• determining a second measurement of a ratio between a number of propagation delay elements and a cycle of the internally generated clock signals;
• determining a first number of cycles of the internally generated clock signal and a second number of the propagation delay elements to be utilized to produce the duty cycle for the specified PWM pulse as a function of the first and second measurements;
• and
• utilizing the determined first number of cycles of the internally generated clock signal and the determined second number of propagation delay elements to generate the specified PWM pulse.

A system for generating pulse width modulation (“PWM”) pulses each with individually designated duty cycles, the system comprising:

• a first clock circuit configured to generate a first clock signal having a first frequency;
• a second clock circuit configured to generate a second clock signal having a second frequency, wherein the second frequency is greater than the first frequency;
• clock ratio measurement circuitry configured to output a first measurement that is a ratio of the first frequency to the second frequency;
• circuitry configured to output a second measurement of how many propagation delay elements substantially equate to a single cycle of the second cock signal;
• and
• circuitry configured to designate a duty cycle for a PWM pulse as a function of the first and second measurements.