公开(公告)号：US10014760B2

公开(公告)日：2018-07-03

申请号：US15395370

申请日：2016-12-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Shailendra Kumar Baranwal ,  Alan Stephen Bass ,  Vighnesh Rudra Das ,  Anant Shankar Kamath ,  Abhijeeth Aarey Premanath

IPC: H02M1/08 ,  H02M3/335

CPC classification number: H02M1/08 ,  H02M1/36 ,  H02M3/33515 ,  H03K17/163 ,  H03K17/164

Abstract: One example includes a switch circuit. The switch circuit includes a transistor configured to activate in response to an activation voltage at an activation terminal of the transistor. The switch circuit also includes a current source coupled to the activation terminal and being configured to generate an activation current. The switch circuit further includes a driver control circuit interconnecting the activation terminal and a voltage rail. The driver control circuit includes digital counter logic configured to cycle through a predetermined number of count values based on an oscillator signal. The driver control circuit is configured to adjust an amplitude of the activation voltage at each of the predetermined number of count values based on the activation current to provide a soft-start activation of the transistor.