公开(公告)号：US11533049B2

公开(公告)日：2022-12-20

申请号：US17363630

申请日：2021-06-30

Applicant: Texas Instruments Incorporated

Inventor： Tong Yao ,  Johan Tjeerd Strydom

IPC: H02M1/08 ,  H03K5/156 ,  H02M3/158 ,  H02M1/00

Abstract: A circuit includes first and second transistors, a capacitor, and a controller. The controller is coupled to the control inputs of the first and second transistors. The controller configured to, during a first mode and in accordance with a first time-varying duty cycle, turn on and off the first transistor while turning on the second transistor when the first transistor is off. The controller is also configured to, during a second mode following the first mode, and in accordance with a second time-varying duty cycle, turn on and off the first transistor while turning on the second transistor when the first transistor is off.

公开(公告)号：US20220399879A1

公开(公告)日：2022-12-15

申请号：US17513505

申请日：2021-10-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Tong Yao ,  Johan Tjeerd Strydom

IPC: H03K3/017 ,  H02M1/08

Abstract: A method includes generating a PWM signal having a first edge to turn a transistor on and a second edge to turn the transistor off in respective switching cycles; determining a target turn on point and a target turn off point based on a measured electrical signal of the transistor responsive to the PWM signal of a switching cycle of a present control cycle; and adjusting the first edge and/or the second edge of the PWM signal for a switching cycle of a subsequent control cycle based on the determined target turn on point and/or the determined target turn off point.