| 摘要 |
The present invention relates to an H-bridge controller and method for controlling a common-mode voltage and/or current of an H-bridge circuit. The H-bridge controller comprises a section for receiving a signal indicating at least one of a common-mode voltage and common-mode current of the H-bridge circuit, and a section for generating control signals which determine switching of the H-bridge circuit so as to control at least one of the common-mode voltage and common-mode current of the H-bridge circuit. The present invention also relates to a system and method for controlling a common-mode voltage and/or current of an H-bridge circuit, the system comprising a modulator for receiving an input signal, modulating the received input signal, and generating a digital signal, an H-bridge controller for receiving the digital signal and generating control signals for controlling operation of the H-bridge circuit, an H-bridge circuit for receiving the control signals and operating based on the received control signals so as to output an analog signal to a load, and a common-mode error determination circuit for generating an error signal indicating at least one of an error of a common-mode voltage and an error of a common-mode current of the H-bridge circuit, wherein the H-bridge controller receives the error signal and generates the control signals based on the received digital signal and the received error signal so as to reduce variations in at least one of an average of the common-mode voltage and an average of the common-mode current of the H-bridge circuit.
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