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CLASS-D AMPLIFIER WITH PULSE-WIDTH MODULATION COMMON-MODE CONTROL AND ASSOCIATED METHOD FOR PERFORMING CLASS-D AMPLIFICATION
CLASS-D AMPLIFIER WITH PULSE-WIDTH MODULATION COMMON-MODE CONTROL AND ASSOCIATED METHOD FOR PERFORMING CLASS-D AMPLIFICATION
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机译:具有脉宽调制共模控制的D类放大器及其相关的实现D类放大器的方法
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摘要
A class-D amplifier includes a loop filter, a pulse-width modulation (PWM) circuit, an output circuit, and a common-mode control circuit. The loop filter receives an input signal of the class-D amplifier to generate a filtered signal. The PWM circuit converts a non-PWM signal into a PWM signal, wherein the non-PWM signal is derived from at least the filtered signal. The output circuit generates an output signal of the class-D amplifier according to the PWM signal. The common-mode control circuit monitors a common-mode level of the output signal to generate a common-mode control signal for PWM common-mode control.
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