发明名称 |
Circuit and method for reducing electromagnetic interference |
摘要 |
A spread spectrum system having a self-oscillating delay-line digital pulse width modulator and a method for mitigating electromagnetic interference. The spread spectrum system has a pseudo-random pattern generator connected to a digital-to-analog converter, which in turn is connected to a linear regulator. The linear regulator receives a reference voltage from the digital-to-analog converter and creates a frequency varying voltage that serves as an input voltage for delay elements of a delay-line based digital pulse width modulator. In response to frequency varying input signal, the delay-line based digital pulse width modulator generates a frequency varying voltage that is input to a switching network to vary its switching frequency.
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申请公布号 |
US7342528(B2) |
申请公布日期 |
2008.03.11 |
申请号 |
US20060424499 |
申请日期 |
2006.06.15 |
申请人 |
SEMICONDUCTOR COMPONENTS INDUSTRIES, L.L.C. |
发明人 |
NG WAI TUNG;TRESCASES OLIVIER |
分类号 |
H02M1/80 |
主分类号 |
H02M1/80 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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