发明授权
- 专利标题: Low drop-out voltage regulator with dynamic voltage control
- 专利标题(中): 具有动态电压控制的低压差稳压器
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申请号: US13134603申请日: 2011-06-10
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公开(公告)号: US08917069B2公开(公告)日: 2014-12-23
- 发明人: Rupert Howes , Alexandre Tavares , Anthony Clowes , Mark Childs
- 申请人: Rupert Howes , Alexandre Tavares , Anthony Clowes , Mark Childs
- 申请人地址: DE Kirchheim/Teck-Nabern
- 专利权人: Dialog Semiconductor GmbH
- 当前专利权人: Dialog Semiconductor GmbH
- 当前专利权人地址: DE Kirchheim/Teck-Nabern
- 代理机构: Saile Ackerman LLC
- 代理商 Stephen B. Ackerman; Billy Knowles
- 优先权: EP11392004 20110525
- 主分类号: G05F1/563
- IPC分类号: G05F1/563 ; G05F1/565 ; G05F1/575
摘要:
A low dropout voltage regulator circuit that dynamically adjusts its output voltage has a voltage adjustment circuit in communication with a dynamic voltage controlling circuit for modifying the output voltage of the low dropout voltage regulator. A first amplification circuit is connected to receive an adjusted reference voltage from the voltage adjustment circuit and compare it with a feedback signal from the output voltage to provide a drive signal to a signal input terminal of a follower output transistor. An output terminal of the follower output transistor provides the output voltage of the regulation circuit. An adjustable internal load circuit applies a load current to the output terminal of the follower output transistor to increase the bandwidth of the output of the voltage regulation circuit that is sensed by a dynamic biasing sensing circuit to generate a dynamic biasing signal that modifies the bandwidth of the first amplification circuit.
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