Generating complex PWM sequences for power control applications

A microcontroller, comprising:

• a first timer;
• a second timer;
• and
• a main timer coupled to the first timer and the second timer, wherein the main timer is configured to provide a main timer signal to the first timer, wherein the first timer is configured to:
• generate, based on the main timer signal, a drive (QA) signal and an event signal indicative of a timing of the QA signal;
• and
• provide the event signal to the second timer;
• wherein the second timer is configured to:
• maintain, during a first group of cycles of the QA signal, a fixed phase difference between the QA signal and a drive (QC) signal by generating the QC signal based on the main timer signal and the event signal;
• and
• a PWM generator configured to apply a current to a load based on the fixed phase difference between the QA signal and the QC signal.

A pulse width modulation (PWM) system, comprising:

• a plurality of timers comprising a counter;
• and
• one or more multiplexers coupled between the plurality of timers,
• wherein the plurality of timers is configured to:
• generate a drive (QA) signal and an event signal indicative of a timing of the QA signal;
• and
• store the event signal in the counter;
• maintain, during a first group of cycles of the QA signal, a fixed phase difference between the QA signal and a drive (QC) signal by generating the QC signal based on the event signal in the counter;
• and
• apply a current to a load based on the fixed phase difference between the QA signal and the QC signal.