公开(公告)号：US09716398B2

公开(公告)日：2017-07-25

申请号：US14483541

申请日：2014-09-11

申请人： AMtek SEMICONDUCTOR CO., LTD.

发明人： Teng-Hui Lee ,  Chen-Pin Lo ,  Keng-Yi Wu

IPC分类号： H03K3/00 ,  H02J7/00 ,  H02J7/02 ,  H03F3/45 ,  H03K5/003 ,  H03K5/007

CPC分类号： H02J7/007 ,  H02J7/0077 ,  H02J7/025 ,  H02J50/00 ,  H03F3/45475 ,  H03F3/45762 ,  H03F2200/375 ,  H03F2200/78 ,  H03F2203/45048 ,  H03F2203/45078 ,  H03F2203/45212 ,  H03F2203/45588 ,  H03F2203/45594 ,  H03F2203/45604 ,  H03K5/003 ,  H03K5/007

摘要： A driving device with correction function is provided herein and utilizes a sensing resistor to detect the variation in an operation amplifier. A signal generated by an offset voltage correction circuit is fed back to the operation amplifier and the offset voltage of the abnormal input in the operation amplifier is corrected to be zero so as to keep the operation amplifier under the best performance condition. The driving device implements in the wireless charger driving system can enhance the accuracy of the current value and can achieve good output performance and better system stability.

公开(公告)号：US09124199B2

公开(公告)日：2015-09-01

申请号：US14224880

申请日：2014-03-25

申请人： AMtek Semiconductor Co., Ltd

发明人： Teng-Hui Lee ,  Keng-Yi Wu ,  Chin-Hung Liu ,  Chen-Pin Lo

IPC分类号： H02P7/00

CPC分类号： H02P7/00 ,  G01R33/0017 ,  G01R33/0035 ,  H02P6/15 ,  H02P6/16

摘要： A motor driver IC with auto calibration function is provided, the motor driver IC utilizes a Hall sensor of a switched sensor circuit to detect the changes in an external magnetic field. By using the compensation current which is generated by the automatic calibration circuit to correct the unexpected offset existed in the Hall sensor of the sensing unit itself to zero so that the sensing unit can sense the changes in the external magnetic field accurately and can point out the rotor position correctly, and the motor can be further driven to commutate relatively to reduce the motor rotation noise to achieve good output performance of the motor rotation and the better motor driving system stability.

摘要翻译： 提供具有自动校准功能的电机驱动器IC，电机驱动器IC利用开关传感器电路的霍尔传感器来检测外部磁场的变化。 通过使用由自动校准电路产生的补偿电流来将感测单元本身的霍尔传感器中存在的意外偏移校正为零，使得感测单元可以精确地感测外部磁场的变化，并且可以指出 转子位置正确，电机可以进一步驱动相对转动，以减少电机旋转噪声，实现电机旋转的良好输出性能和更好的电机驱动系统稳定性。