公开(公告)号：WO1996036911A1

公开(公告)日：1996-11-21

申请号：PCT/US1996004069

申请日：1996-03-26

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  GROSSPIETSCH, John ,  ST. ANGEL, Lindo

IPC: G05F03/02

CPC classification number: G05F3/242

Abstract: A low power regenerative feedback device (301) and method automatically increases bias current during positive large-signal slewing, enabling output to change faster. The device includes a voltage transforming unit (302), adaptive regenerative feedback circuitry (304) and an output stage (309). When the device is not in a positive slew, bias currents are unchanged, providing a low standby current. Since regenerative feedback is internal and automatic to the device, current is increased only for the device driving an active column of an LCD panel. Thus, the present invention is power efficient. In addition, the AC response of the device is preserved because the device utilizes a regenerative feedback circuit (304) that does not add appreciable excess phase shift. The device achieves an output that switches readily from positive supply to negative supply.

Abstract translation: 低功率再生反馈装置（301）和方法在正大信号回转期间自动增加偏置电流，使输出更快地变化。 该装置包括电压变换单元（302），自适应再生反馈电路（304）和输出级（309）。 当器件不是正转时，偏置电流不变，提供低待机电流。 由于再生反馈对于器件是内部自动的，因此只能为驱动LCD面板的有效列的器件提供电流。 因此，本发明是功率效率的。 另外，设备的AC响应被保留，因为该设备利用不增加明显的多余相移的再生反馈电路（304）。 该器件实现了从正电源切换到负电源的输出。

公开(公告)号：EP0778966A1

公开(公告)日：1997-06-18

申请号：EP96911404.0

申请日：1996-03-26

Applicant: MOTOROLA, INC.

Inventor： GROSSPIETSCH, John ,  ST. ANGEL, Lindo

IPC: G05F3

CPC classification number: G05F3/242

Abstract: A low power regenerative feedback device (301) and method automatically increases bias current during positive large-signal slewing, enabling output to change faster. The device includes a voltage transforming unit (302), adaptive regenerative feedback circuitry (304) and an output stage (309). When the device is not in a positive slew, bias currents are unchanged, providing a low standby current. Since regenerative feedback is internal and automatic to the device, current is increased only for the device driving an active column of an LCD panel. Thus, the present invention is power efficient. In addition, the AC response of the device is preserved because the device utilizes a regenerative feedback circuit (304) that does not add appreciable excess phase shift. The device achieves an output that switches readily from positive supply to negative supply.