发明申请
- 专利标题： Filterless class-D speaker driver with less switching
- 专利标题（中）： 无滤波D类扬声器驱动器，切换少
-
申请号： US11797037申请日： 2007-04-30
-
公开(公告)号： US20080265989A1公开(公告)日： 2008-10-30
- 发明人: Minsheng Wang
- 申请人： Minsheng Wang
- 申请人地址： US CA Irvine
- 专利权人： Broadcom Corporation
- 当前专利权人： Broadcom Corporation
- 当前专利权人地址： US CA Irvine
- 主分类号： H03F3/217
- IPC分类号： H03F3/217
摘要：
Methods for designing a filterless class-D amplifier and driver are described herein. In the exemplary embodiment, a feedback loop is used to stabilize the filterless class-D amplifier. A pulse width modulated (PWM) output signal is generated by adding a comparator input signal to a comparative signal, and comparing the sum to a peak voltage, which can be a peak value of the comparative signal. A limit of one PWM sample will be generated half per period of the comparative signal, resulting in lower dynamic switching noise and a decreased sensitivity to jitter noise than conventional filterless class-D amplifiers.
公开/授权文献
- US07609110B2 Filterless class-D speaker driver with less switching 公开/授权日：2009-10-27
信息查询
IPC分类:
