Invention Grant
US09407192B2 Method and apparatus for charging a bootstrap charge storage device 有权
用于对自举电荷存储装置充电的方法和装置

  • Patent Title: Method and apparatus for charging a bootstrap charge storage device
  • Patent Title (中): 用于对自举电荷存储装置充电的方法和装置
  • Application No.: US14400086
    Application Date: 2012-06-05
  • Publication No.: US09407192B2
    Publication Date: 2016-08-02
  • Inventor: Thierry Sicard
  • Applicant: Thierry Sicard
  • Applicant Address: US TX Austin
  • Assignee: Freescale Semiconductor, Inc.
  • Current Assignee: Freescale Semiconductor, Inc.
  • Current Assignee Address: US TX Austin
  • International Application: PCT/IB2012/001270 WO 20120605
  • International Announcement: WO2013/182867 WO 20131212
  • Main IPC: H02P29/00
  • IPC: H02P29/00 H02P7/06 H03K17/06
Method and apparatus for charging a bootstrap charge storage device
Abstract:
A charging circuit for at least one bootstrap charge storage element within an inertial load driver circuit is described, the at least one bootstrap charge storage element comprising a first node operably coupled to an output node of at least one switching element of the inertial load driver circuit. The charging circuit comprises at least one current source controllable to provide a current to a second node of the at least one bootstrap charge storage element, and at least one detection component arranged to receive at a first input thereof an indication of a voltage level at the output node of the at least one switching element of the inertial load driver circuit, detect when the voltage level at the output node of the switching element of the inertial load driver circuit is below a negative threshold voltage level, and control the at least one current source to provide a current to the second node of the at least one bootstrap charge storage element when the voltage level at the output node of the switching element of the inertial load driver circuit is below the negative threshold voltage level.
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