公开(公告)号：US20230299677A1

公开(公告)日：2023-09-21

申请号：US18184111

申请日：2023-03-15

Applicant: Texas Instruments Incorporated

Inventor： Hongcheng Xu ,  Michael Schlenker ,  Konrad Wagensohner

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M3/1582 ,  H02M1/0009 ,  H02M1/0032

Abstract: A power conversion circuit includes a transconductance amplifier circuit, a current limiting circuit, and a controller. The transconductance amplifier circuit is configured to provide a first output current at a first output based on a differential between a first voltage at the first input and a second voltage at a second input. The current limiting circuit is configured to provide a second output current at the second output that is an input current at a third input limited to no greater than the first output current. The controller is configured to control first and second switches during a time period where the power conversion circuit transitions between an active mode and a skip mode.

公开(公告)号：US20230299675A1

公开(公告)日：2023-09-21

申请号：US18170085

申请日：2023-02-16

Applicant: Texas Instruments Incorporated

Inventor： Hongcheng Xu ,  Konrad Wagensohner ,  Michael Schlenker

IPC: H02M3/158 ,  H02M1/08

CPC classification number: H02M3/158 ,  H02M1/08

Abstract: Described embodiments include a circuit with a first amplifier having first and second amplifier inputs and a first amplifier output. The first amplifier input is coupled to a reference voltage terminal. The second amplifier input is coupled to a voltage feedback terminal. A second amplifier has third and fourth amplifier inputs and second and third amplifier outputs. The third amplifier input is coupled to the first amplifier output. A first switch has first and second switch terminals. The second switch terminal is coupled to the fourth amplifier input. A third amplifier has fifth and sixth amplifier inputs and a fourth amplifier output. The fifth amplifier input is coupled to the second amplifier output. The sixth amplifier input is coupled to the third amplifier output. A second switch has a third switch terminal coupled to the fourth amplifier output, and a fourth switch terminal coupled to the first amplifier output.