Linear stage efficiency techniques for H-bridge systems
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United States of America Patent
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Dec 7, 2021
Grant Date -
Dec 31, 2020
app pub date -
May 28, 2020
filing date -
Jun 28, 2019
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Abstract
Techniques for efficient operation of a linear stage in an H-bridge system are provided. In an example, a linear stage can switch between voltage regulation and current regulation over a range of a command signal. The particular regulation mode can depend on the regulation mode of a switched stage of the H-bridge system. Efficiency can be realized by using current regulation of the linear stage when the output voltage of the linear stage moves away from the voltage of a supply rail. Such a control scheme can reduce the voltage across the linear stage for a larger range of the command signal resulting in less heat dissipation of the linear stage compared to conventional control of H-bridge linear stages.
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