Invention Grant
US09552006B1 Wideband low dropout voltage regulator with power supply rejection boost
有权
宽带低压差稳压器,具有电源抑制提升功能
- Patent Title: Wideband low dropout voltage regulator with power supply rejection boost
- Patent Title (中): 宽带低压差稳压器,具有电源抑制提升功能
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Application No.: US14642647Application Date: 2015-03-09
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Publication No.: US09552006B1Publication Date: 2017-01-24
- Inventor: James Lawrence Gorecki , Han-Yuan Tan
- Applicant: INPHI CORPORATION
- Applicant Address: US CA Santa Clara
- Assignee: INPHI CORPORATION
- Current Assignee: INPHI CORPORATION
- Current Assignee Address: US CA Santa Clara
- Agency: Ogawa P.C.
- Agent Richard T. Ogawa
- Main IPC: G05F1/565
- IPC: G05F1/565 ; G05F1/575

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.
Information query
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