Patent ID: 8749303

Claim:
A method for detecting and solving an over-current situation of a pulse-width modulated system comprising the steps of: (1) providing a pulse-width modulated system comprising a filter, means to detect an over-current situation, a PWM modulator, a pulse generator, means to multiplex output from pulse generator with output from PWM modulator; (2) starting normal operation of the pulse-width modulated system; (3) monitoring continuously data stream out of the PWM modulator in order to detect an over-current situation until the pulse modulated system is switched off; (4) checking if an over-current situation is detected and, if so, go to step (5), otherwise repeat step (4); (5) setting an over-current signal; (6) enabling the pulse generator generating pulses having a supply-scalable duty cycle; (7) multiplexing the output of the pulse generator with PWM modulator output; (8) bounding output current by suitable modulation caused by pulses from the pulse generator; (9) resetting over-current signal after over-current situation is solved; and (10) resuming normal operation of the pulse-width modulated system and go back to step (4).