Invention Grant
US08351235B2 Level shift circuit 有权
电平移位电路

  • Patent Title: Level shift circuit
  • Patent Title (中): 电平移位电路
  • Application No.: US12926500
    Application Date: 2010-11-23
  • Publication No.: US08351235B2
    Publication Date: 2013-01-08
  • Inventor: Masashi Akahane
  • Applicant: Masashi Akahane
  • Applicant Address: JP Kawasaki-Shi
  • Assignee: Fuji Electric Co., Ltd.
  • Current Assignee: Fuji Electric Co., Ltd.
  • Current Assignee Address: JP Kawasaki-Shi
  • Agent Manabu Kanesaka
  • Priority: JP2009-276806 20091204; JP2010-143826 20100624
  • Main IPC: G11C19/00
  • IPC: G11C19/00
Level shift circuit
Abstract:
A feedback circuit by which an output of a memory device for storing level-shifted data can be fed back to the input side includes inverters, resistors, and transistors. The resistance value of combined resistance for pulling up or down first and second switching devices is varied in accordance with the output of the memory device by the feedback circuit, so that malfunction caused by dv/dt noise can be dealt with out generating any through current. In this manner, it is possible to provide a level shift circuit which can deal with malfunction causing dv/dt noise regardless of an on or off state of a high-potential-side switching device, while generation of a through current can be suppressed.
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