公开(公告)号：US20170264276A1

公开(公告)日：2017-09-14

申请号：US15065166

申请日：2016-03-09

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Mahmut Sinangil ,  Hsin-Hsin KO ,  Chiting CHENG ,  Yen-Huei CHEN ,  Hung-Jen LIAO ,  Jonathan Tsung-Yung CHANG

IPC: H03K3/356 ,  H03K19/0185

CPC classification number: H03K3/356113 ,  H03K19/018521

Abstract: A level shifter circuit is provided that uses a boosting circuit. The boosting circuit is configured to improve the operation of the level shifter circuit when the high voltages of voltage domains across the level shifter circuit are widely separated. A circuit apparatus includes a core level shifter circuit that changes a first voltage of an input signal to a second voltage of an output signal. The circuit apparatus further includes a first boosting circuit that is coupled to the core level shifter circuit and generates a first transient voltage applied to the core level shifter circuit when the input signal transitions from a low value to a high value. The circuit apparatus also includes a second boosting circuit that is coupled to the core level shifter circuit and generates a second transient voltage applied to the core level shifter circuit when the input signal transitions from a high value to a low value.