Invention Grant
- Patent Title: Two-stage error amplifier with nested-compensation for LDO with sink and source ability
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Application No.: US15679274Application Date: 2017-08-17
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Publication No.: US10725488B2Publication Date: 2020-07-28
- Inventor: Ni Zeng
- Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd
- Applicant Address: CN Shenzhen
- Assignee: STMicroelectronics (Shenzhen) R&D Co. Ltd
- Current Assignee: STMicroelectronics (Shenzhen) R&D Co. Ltd
- Current Assignee Address: CN Shenzhen
- Agency: Crowe & Dunlevy
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@48ee12fb
- Main IPC: G05F1/575
- IPC: G05F1/575

Abstract:
A low dropout amplifier may include an error amplifier having first and second inputs coupled to a reference signal and a feedback signal, respectively. The error amplifier may be configured to generate first and second error signals at first and second outputs, respectively, with the first and second error signals based upon a difference between the reference signal and the feedback signal. A sink stage may be coupled to the first output and configured to generate a sink current based upon the first error signal. A source stage may be coupled to the second output and configured to generate a source current based upon the second error signal. An output node may be coupled to receive the sink and source currents.
Public/Granted literature
- US20180011506A1 TWO-STAGE ERROR AMPLIFIER WITH NESTED-COMPENSATION FOR LDO WITH SINK AND SOURCE ABILITY Public/Granted day:2018-01-11
Information query
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