发明授权
- 专利标题: Low-dropout regulator and method for voltage regulation
- 专利标题(中): 低压差稳压器和电压调节方法
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申请号: US14234612申请日: 2012-07-06
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公开(公告)号: US09395732B2公开(公告)日: 2016-07-19
- 发明人: Alessandro Carbonini , Paolo Draghi
- 申请人: Alessandro Carbonini , Paolo Draghi
- 申请人地址: AT Unterpremstaetten
- 专利权人: AMS AG
- 当前专利权人: AMS AG
- 当前专利权人地址: AT Unterpremstaetten
- 代理机构: McDermott Will & Emery LLP
- 优先权: EP11175617 20110727
- 国际申请: PCT/EP2012/063257 WO 20120706
- 国际公布: WO2013/013957 WO 20130131
- 主分类号: G05F5/00
- IPC分类号: G05F5/00 ; G05F1/575 ; G05F3/24
摘要:
A low-dropout regulator (1) comprises a differential amplifier (3) with a reference input (5) for applying a reference voltage (VIN), a feedback input (7) and an amplifier output (9). An output transistor (11) has a control connection (13) connected to the amplifier output (9), and a control section connected between a first supply potential terminal (VDD) and a voltage output (15) of the low-dropout regulator (1). A feedback branch (17) with an RC-parallel connection (19) is coupled between the voltage output (15) and the feedback input (7). A precharge circuit (30) includes a first field effect transistor (31) with a gate (32) coupled to the feedback input (7) and is configured to precharge the RC-parallel connection (19) to a threshold voltage (VTH) of the first field effect transistor (31).
公开/授权文献
- US20140225580A1 LOW-DROPOUT REGULATOR AND METHOD FOR VOLTAGE REGULATION 公开/授权日:2014-08-14
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