A pulse width modulation system for use in a switching power supply circuit provides high-resolution pulse width modulated signals. The pulse width modulation system is configured to receive a control signal comprising a (m+n)-bit binary word and to provide a pulse width modulated signal with a predetermined...http://www.google.co.uk/patents/US7057379?utm_source=gb-gplus-sharePatent US7057379 - System and method for providing digital pulse width modulation
