发明申请
- 专利标题: MULTI-CHANNEL DIGITAL PULSE WIDTH MODULATOR (DPWM)
- 专利标题(中): 多通道数字脉宽调制器(DPWM)
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申请号: US12608186申请日: 2009-10-29
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公开(公告)号: US20100117752A1公开(公告)日: 2010-05-13
- 发明人: ERIC IOZSEF , IRV LUSTIGMAN , ABDELKARIM GADIRI
- 申请人: ERIC IOZSEF , IRV LUSTIGMAN , ABDELKARIM GADIRI
- 申请人地址: US CA Fremont
- 专利权人: EXAR CORPORATION
- 当前专利权人: EXAR CORPORATION
- 当前专利权人地址: US CA Fremont
- 主分类号: H03K7/08
- IPC分类号: H03K7/08
摘要:
A multiple channel Digital Pulse Width Modulator (DPWM) can include a single delay locked loop with a delay line, the delay line producing a number of outputs. Circuitry can use a delay line mask to mask a portion of the delay line outputs to produce a modified outputs so as to prevent premature pulse width reset. Jitter tolerance look ahead circuits can prevent jitter from causing premature reset of pulse width modulated signals. The pulse width modulators can include multiple alternately used multiplexers so that the operation of the pulse width modulators is not affected by the load time of the multiplexers.
公开/授权文献
- US07915938B2 Multi-channel digital pulse width modulator (DPWM) 公开/授权日:2011-03-29