公开(公告)号：EP3091659A1

公开(公告)日：2016-11-09

申请号：EP15197508.3

申请日：2015-12-02

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd

Inventor： LIU, QiYu ,  LIN, Hong Wu

IPC: H03F3/217

CPC classification number: H03F3/2173 ,  H03F2200/03 ,  H03F2200/114

Abstract: A class-D amplifier (100) includes a signal processing block (140). The signal processing block generates a first processed signal (Vp) representing a difference between a first differential signal and a second differential signal, when a duty cycle of the first differential signal is greater than that of the second differential signal. The signal processing block generates the first processed signal representing a reference DC level, when the duty cycle of the first differential signal is less than that of the second differential signal. A second processed signal (Vn) representing a difference between the second differential signal and the first differential signal is generated when the duty cycle of the second differential signal is greater than that of the first differential signal, and the second processed signal representing the reference DC level is generated when the duty cycle of the second differential signal is less than that of the first differential signal.

Abstract translation: D类放大器（100）包括：信号处理块（140）。 信号处理块基因率表示第一差分信号和第二差分信号，当第一差分信号的占空比比所述第二差分信号的更大之间的差的第一经处理的信号（VP）。 信号处理块基因率表示参考DC电平的第一处理后的信号，当第一差分信号的占空比小于所述第二差分信号的。 生成表示所述第二差分信号，并将所述第一差分信号之间的差的第二经处理的信号（VN）当将第二差分信号的占空比大于第一差分信号的更大，并且所述第二处理后的信号代表的参考DC 产生电平。当将第二差分信号的占空比小于该第一差分信号的。