Patent ID: 7388431
Filing Date: 2008-06-17
Classification: H03F

Abstract:
1. A switching amplifier comprising: an H-bridge circuit with a pair of output terminals; and a control circuit for operating said H-bridge circuit in response to an input signal to thereby generate a first output signal on the first one of said pair of output terminals and a second output signal on the second one of said pair of output terminals; wherein responsive to said input signal being equal to a reference value, said first output signal has a first duty cycle and said second output signal has a second duty cycle; responsive to said input signal being greater than said reference value, said first output signal has a third duty cycle varying with said input signal and said duty cycle of second output signal remains fixed at said second duty cycle; and responsive to said input signal being less than said reference value, said duty cycle of first output signal remains fixed at said first duty cycle and said second output signal has a fourth duty cycle varying with said input signal.