公开(公告)号：US20150349690A1

公开(公告)日：2015-12-03

申请号：US14335877

申请日：2014-07-19

Applicant: RICHTEK TECHNOLOGY CORP

Inventor： Wei-Hsu Chang ,  Jo-Yu Wang

IPC: H02P23/04 ,  H02P25/06 ,  H02P25/16

CPC classification number: H02P23/04 ,  H02P25/034

Abstract: A driving signal generator for driving a transducer includes: an input terminal for receiving a control signal; and a digital filter, coupled to the input terminal, for generating a driving signal to drive the transducer in response to the control signal. The digital filter is a notch filter, and the transfer function of the digital filter is related to the characteristics of the transducer.

Abstract translation: 用于驱动换能器的驱动信号发生器包括：用于接收控制信号的输入端; 以及耦合到输入端的数字滤波器，用于响应于控制信号产生驱动信号以驱动换能器。 数字滤波器是陷波滤波器，数字滤波器的传递函数与传感器的特性有关。