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Mismatch-Error Shaping-Based Digital Multiphase Modulator
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DOI：10.1109/TPEL.2011.2168612.png)
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摘要
En 中文
This paper introduces a digital multiphase modulator (MPM) using mismatch-error shaping techniques based on a digital-to-analog converter view of multiphase power converters. The proposed modulator has relatively simple implementation requiring no explicit pulsewidth modulation and generates control pulses for any number of phases using a single, low-frequency clock. Advantages and disadvantages of the mismatch-error shaping MPM are examined through analysis, simulations, and experimental results. The proposed MPM is particularly well suited for multilevel envelope-tracking amplifiers supplying power to linear RF power amplifiers. Results are shown for an experimental eight-phase buck converter in an envelope-tracking application.
Keyword:
Digital-analog conversion
digital control
noise shaping
switched-mode power supply
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期刊
IF:
6.5
论文数:
1.7W
被引数:
8.3W
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