公开(公告)号：US07535189B2

公开(公告)日：2009-05-19

申请号：US11690280

申请日：2007-03-23

申请人： Joji Noie

发明人： Joji Noie

IPC分类号： H02P6/00

CPC分类号： H02H7/0844

摘要： A motor drive circuit comprises a first power line; a second power line; an H-bridge circuit that includes a first source transistor and a first sink transistor connected serially, a second source transistor and a second sink transistor connected serially, a motor coil connected at a connection point between the first source transistor and the first sink transistor, and first to fourth regenerative diodes disposed respectively on the first and second source transistors and the first and second sink transistors, the H-bridge circuit being connected between the first power line and the ground, the first source transistor and the second sink transistor being switched complementarily to the second source transistor and the first sink transistor; and a voltage constraint circuit connected between the second power line and control electrodes of the first and second source transistors, the voltage constraint circuit constraining increase in the voltage of the control electrodes of the first and second source transistors to a voltage corresponding to the voltage of the second power line, the first and second source transistors being transistors turned on/off in accordance with a voltage difference between an electrode on the first power line and the control electrode, the voltage of the second power line being a voltage that turns off the second source transistor if a current flows from the first source transistor to the second sink transistor.

摘要翻译： 电动机驱动电路包括第一电力线; 第二条电力线 H桥电路，包括串联连接的第一源晶体管和第一宿晶体管，串联连接的第二源晶体管和第二宿晶体管，连接在第一源晶体管和第一宿晶体管之间的连接点处的电机线圈， 以及分别设置在第一和第二源极晶体管以及第一和第二宿晶体管上的第一至第四再生二极管，H桥电路连接在第一电力线与地之间，第一源极晶体管和第二宿晶体管被切换 互补于第二源晶体管和第一宿晶体管; 以及连接在第二电源线与第一和第二源极晶体管的控制电极之间的电压约束电路，电压约束电路限制第一和第二源极晶体管的控制电极的电压升高到对应于 所述第二电源线，所述第一和第二源极晶体管根据所述第一电力线上的电极与所述控制电极之间的电压差导通/截止，所述第二电力线的电压为关闭所述第二电力线的电压 第二源晶体管，如果电流从第一源晶体管流到第二宿晶体管。