Invention Grant
US09348348B2 Active clamps for multi-stage amplifiers in over/under-voltage condition
有权
用于过压/欠压条件下的多级放大器的有源钳位
- Patent Title: Active clamps for multi-stage amplifiers in over/under-voltage condition
- Patent Title (中): 用于过压/欠压条件下的多级放大器的有源钳位
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Application No.: US14191624Application Date: 2014-02-27
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Publication No.: US09348348B2Publication Date: 2016-05-24
- Inventor: Frank Kronmueller , Mahir Uka
- Applicant: Dialog Semiconductor GmbH
- Applicant Address: DE Kirchheim/Teck-Nabern
- Assignee: Dialog Semiconductor GmbH
- Current Assignee: Dialog Semiconductor GmbH
- Current Assignee Address: DE Kirchheim/Teck-Nabern
- Agency: Saile Ackerman LLC
- Agent Stephen B. Ackerman
- Priority: EP13173089 20130620
- Main IPC: G05F1/571
- IPC: G05F1/571 ; G05F1/56 ; G05F1/565
Abstract:
Multi-stage amplifiers, such as linear regulators or linear voltage regulators (e.g. low-dropout regulators) configured to provide a constant output voltage subject to load transients are presented. A multi-stage amplifier, having a differential amplification stage configured to provide a stage output voltage at an output node, based on a first input voltage and a second input voltage is presented. Furthermore, the multi-stage amplifier comprises a second amplification stage comprising an amplifier current source configured to provide an amplifier current; and an amplifier transistor arranged in series with the amplifier current source; wherein a gate of the amplifier transistor is coupled to the output node of the differential amplification stage. In addition, the multi-stage amplifier comprises a detection circuit.
Public/Granted literature
- US20140375289A1 Active Clamps for Multi-Stage Amplifiers in Over/Under-Voltage Condition Public/Granted day:2014-12-25
Information query
IPC分类:
