Patent ID: 6188276
Filing Date: 2001-02-13
Classification: H02M,H03F

Abstract:
A power amplifier having a ground, a voltage input, a power supply input, and a voltage output, the circuit comprising:an input resistor connected between the voltage input and a feedback node;a feedback resistor connected between the voltage output and the feedback node;the feedback node coupled to a first pulse-width modulator, the first pulse-width modulator generating a first pulse-width modulated signal when the feedback node has a voltage lower than a first voltage reference, the first pulse-width modulated signal periodically activating a first switch, the first switch inductively coupling the voltage output to the power supply input; andthe feedback node coupled to a second pulse-width modulator, the second pulse-width modulator generating a second pulse-width modulated signal when the feedback node has a voltage higher than a second voltage reference, the second pulse-width modulated signal periodically activating a second switch, the second switch inductively coupling the voltage output to ground.