发明授权
US09395732B2 Low-dropout regulator and method for voltage regulation 有权
低压差稳压器和电压调节方法

  • 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
  • 申请号: US14234612
    申请日: 2012-07-06
  • 公开(公告)号: US09395732B2
    公开(公告)日: 2016-07-19
  • 发明人: Alessandro CarboniniPaolo Draghi
  • 申请人: Alessandro CarboniniPaolo 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
Low-dropout regulator and method for voltage regulation
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).
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