公开(公告)号：US20180150093A1

公开(公告)日：2018-05-31

申请号：US15637225

申请日：2017-06-29

Applicant: STMicroelectronics S.r.I.

Inventor： Vanni Poletto ,  Biagio Provinzano

IPC: G05F1/575 ,  H03F3/45 ,  H03K19/003

CPC classification number: G05F1/575 ,  H03F3/45475 ,  H03F3/45511 ,  H03F3/505 ,  H03K17/04206 ,  H03K17/166 ,  H03K17/687 ,  H03K19/00361

Abstract: A (pre) driver circuit includes first and second output terminals configured to be coupled to a power transistor. A differential stage has non-inverting and inverting inputs for receiving an input voltage. The input voltage is replicated as an output voltage across the first and second output terminals as a drive signal for the power transistor. The differential stage includes a differential transconductance amplifier in a voltage follower arrangement configured to provide continuous regulation of a voltage at the first output terminal with respect to the second output terminal.