Low-distortion tri-state switching amplifier

Details Low-distortion tri-state switching amplifier Low-distortion tri-state switching amplifier

2007-09-04

2007-09-04

Pascal, Robert (Department: 2817)

Amplifiers

Modulator-demodulator-type amplifier

C330S20700P, C330S251000

Reexamination Certificate

active

11611893

ABSTRACT:
A switching amplifier includes a level shifting circuit for adjusting a voltage level of an original input signal to generate a first input signal and a second input signal. The first input signal is identical to the original input signal except for referring to a first reference level. The second input signal is identical to the original input signal except for referring to a second reference level. In response to the first input signal and an oscillating signal, a first control circuit generates a first width-limited PWM signal for controlling a first half-bridge switching circuit. In response to the second input signal and the oscillating signal, a second control circuit generates a second width-limited PWM signal for controlling a second half-bridge switching circuit.

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patent: 6727752 (2004-04-01), Skinner et al.
patent: 6788137 (2004-09-01), Morita

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