发明授权
US07911267B2 Sigma-delta class-D amplifier and control method for a sigma-delta class-D amplifier
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Σ-Δ类D类放大器和用于Σ-Δ类D类放大器的控制方法
- 专利标题： Sigma-delta class-D amplifier and control method for a sigma-delta class-D amplifier
- 专利标题（中）： Σ-Δ类D类放大器和用于Σ-Δ类D类放大器的控制方法
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申请号： US12230648申请日： 2008-09-03
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公开(公告)号： US07911267B2公开(公告)日： 2011-03-22
- 发明人: Teng-Hung Chang , Jwin-Yen Guo
- 申请人： Teng-Hung Chang , Jwin-Yen Guo
- 申请人地址： TW Hsinchu
- 专利权人： Richtek Technology Corp.
- 当前专利权人： Richtek Technology Corp.
- 当前专利权人地址： TW Hsinchu
- 代理机构： Rosenberg, Klein & Lee
- 优先权： TW96134299A 20070913
- 主分类号： H03F3/38
- IPC分类号： H03F3/38
摘要：
A sigma-delta class-D amplifier includes a quantizer to quantize an input to produce a digital signal, and an output stage to produce an output according to the digital signal. The quantizer has a smaller step size so that the digital signal has at least five logical levels, and the sigma-delta class-D amplifier is thus improved to have wider stable modulation range and less switching loss.
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