Invention Grant
US09379699B2 Switch driver with a low-cost cross-conduction-preventing circuit 有权
开关驱动器具有低成本的交叉导电防止电路

  • Patent Title: Switch driver with a low-cost cross-conduction-preventing circuit
  • Patent Title (中): 开关驱动器具有低成本的交叉导电防止电路
  • Application No.: US14759402
    Application Date: 2014-11-26
  • Publication No.: US09379699B2
    Publication Date: 2016-06-28
  • Inventor: Wenwei Wang
  • Applicant: Balanstring Technology, LLC
  • Agent Kevin Roe
  • International Application: PCT/US2014/067636 WO 20141126
  • International Announcement: WO2016/073012 WO 20160512
  • Main IPC: H03L5/00
  • IPC: H03L5/00 H03K17/16 H03K19/0185
Switch driver with a low-cost cross-conduction-preventing circuit
Abstract:
A driver for a power transistor switch comprising a FET complementary output stage which is driven by another FET complementary pre-driver stage which is further driven by an input-buffer and level-shifter stage. The pre-driver stage includes a current-limiting and cross-delaying circuit which is inserted in between drains terminals of a complementary FET pair. The current-limiting and cross-delaying circuit limits shoot-current at the pre-driver stage; and in conjunction with the FET pair and the input-buffer and level-shifter stage, it is adapted to delay turning on one complementary output FET until after the other complementary output FET is turned off, thereby preventing cross conduction at the output stage.
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