公开(公告)号：US11949320B2

公开(公告)日：2024-04-02

申请号：US17678220

申请日：2022-02-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Vishnuvardhan Reddy Jaladanki ,  Preetam Charan Anand Tadeparthy ,  Scott Ragona ,  Rengang Chen ,  Evan Michael Reutzel ,  Bhaskar Ramachandran

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M1/0009 ,  H02M3/158

Abstract: A device includes a current mirror, a switch, first and second current paths, first and second buffers, a variable resistor, a temperature-sensing circuit, and a controller. The first current path is coupled between the current mirror's input and the switch. The switch switches between ground and a transistor based on a control signal. The second current path is coupled between a first current mirror output and ground. The first buffer is coupled to a second current mirror output. The second buffer is coupled to the variable resistor, which is coupled to the first buffer. The temperature-sensing circuit provides a device temperature to the controller, which is coupled to a first buffer output and determines a first adjustment to the first and second current paths and a second adjustment to the variable resistor based on the device temperature.