公开(公告)号：US11765499B2

公开(公告)日：2023-09-19

申请号：US17572769

申请日：2022-01-11

申请人： Cirrus Logic International Semiconductor Ltd.

发明人： Jon D. Hendrix ,  Emmanuel A. Marchais ,  Nicholas Joseph ,  Bryant Tran ,  Marco A. Janko ,  Noel Preecs

IPC分类号： H04R3/00 ,  G06F3/01 ,  H03F1/56

CPC分类号： H04R3/00 ,  G06F3/016 ,  H03F1/56 ,  H03F2200/03 ,  H03F2200/471

摘要： In accordance with embodiments of the present disclosure, a method of driving a playback waveform to an electromagnetic actuator by a transducer driving system may include operating the transducer driving system in a first mode wherein the electromagnetic actuator is driven with the playback waveform in a closed loop to form a closed-loop voltage drive system that includes a negative impedance, operating the transducer driving system in a second mode wherein the electromechanical actuator is driven with the playback waveform in an open loop, and operating a mode switch for transitioning the transducer driving system to operate between the first mode and the second mode.