Wideband low dropout voltage regulator with power supply rejection boost
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United States of America Patent
Stats
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Mar 20, 2018
Issued Date -
N/A
app pub date -
Dec 9, 2016
filing date -
Mar 9, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present disclosure provides a detailed description of techniques for implementing a wideband low dropout voltage regulator with power supply rejection boost. More specifically, some embodiments of the present disclosure are directed to a voltage regulator comprising a voltage regulator core powered by a supply voltage and providing a regulated voltage output, and a power supply feed forward injection module delivering an injection signal to the voltage regulator core to effect a power supply rejection of the supply voltage variation from the regulated voltage. In one or more embodiments, the injection signal is determined from the supply voltage variation and a gain factor that is based on various design attributes of the output stage of the voltage regulator core. In one or more embodiments, the power supply feed forward injection module comprises a supply voltage sense circuit, a low pass filter, and one or more selectable transconductance amplifiers.
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Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- G05F Class
- 14.88 % this patent is cited more than
- 7 Age
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