公开(公告)号：US08488283B2

公开(公告)日：2013-07-16

申请号：US12874423

申请日：2010-09-02

申请人： Motohiro Ando ,  Akio Sasabe

发明人： Motohiro Ando ,  Akio Sasabe

IPC分类号： H02H9/02

CPC分类号： H02H9/025 ,  H03K17/0822 ,  H03K17/166

摘要： The load drive device of the present invention comprises a load drive unit for switching on/off output current that flows to an inductive load; and an overcurrent protection circuit for detecting whether the output current is in an overcurrent state, wherein the load drive unit has an output transistor connected to one end of the inductive load; and a pre-driver for generating a control signal of the output transistor in accordance with an input signal, and the pre-driver has a first drive unit for switching on/off the output transistor during normal operation; and a second drive unit for switching off the output transistor more slowly than the first drive unit during overcurrent protection operation.

摘要翻译： 本发明的负载驱动装置包括负载驱动单元，用于接通/关闭流向电感负载的输出电流; 以及过电流保护电路，用于检测输出电流是否处于过电流状态，其中所述负载驱动单元具有连接到所述电感性负载的一端的输出晶体管; 以及用于根据输入信号产生输出晶体管的控制信号的预驱动器，并且所述预驱动器具有用于在正常操作期间接通/关断所述输出晶体管的第一驱动单元; 以及第二驱动单元，用于在过电流保护操作期间比第一驱动单元更慢地关断输出晶体管。

公开(公告)号：US20110051296A1

公开(公告)日：2011-03-03

申请号：US12874423

申请日：2010-09-02

申请人： Motohiro Ando ,  Akio Sasabe

发明人： Motohiro Ando ,  Akio Sasabe

IPC分类号： H02H9/02

CPC分类号： H02H9/025 ,  H03K17/0822 ,  H03K17/166

摘要： The load drive device of the present invention comprises a load drive unit for switching on/off output current that flows to an inductive load; and an overcurrent protection circuit for detecting whether the output current is in an overcurrent state, wherein the load drive unit has an output transistor connected to one end of the inductive load; and a pre-driver for generating a control signal of the output transistor in accordance with an input signal, and the pre-driver has a first drive unit for switching on/off the output transistor during normal operation; and a second drive unit for switching off the output transistor more slowly than the first drive unit during overcurrent protection operation.

摘要翻译： 本发明的负载驱动装置包括负载驱动单元，用于接通/关闭流向电感负载的输出电流; 以及过电流保护电路，用于检测输出电流是否处于过电流状态，其中所述负载驱动单元具有连接到所述电感性负载的一端的输出晶体管; 以及用于根据输入信号产生输出晶体管的控制信号的预驱动器，并且所述预驱动器具有用于在正常操作期间接通/关断所述输出晶体管的第一驱动单元; 以及第二驱动单元，用于在过电流保护操作期间比第一驱动单元更慢地关断输出晶体管。