Patent ID: 6459602
Filing Date: 2002-10-01
Classification: H02M

Abstract:
A DC to DC converter circuit, comprising:a comparator that is electrically coupled in said converter circuit so as to compare an output voltage of said converter circuit with a periodic reference signal having a DC offset determined by a DC reference voltage and generate a pulse width modulated signal; a driver that is electrically coupled to said comparator so as to use said pulse width modulated signal as its input and drive a pair of switches, one high, one low, which alternatively control a level of said output voltage; and a low pass filter that is electrically coupled to an output of said pair of switches so as to reduce noise of said output voltage; wherein said comparator forces said output voltage at a pre-established value by increasing or decreasing the pulse width of said pulse width modulated signal when said output voltage is lower or higher than said pre-established value.