公开(公告)号：US20210211052A1

公开(公告)日：2021-07-08

申请号：US16877785

申请日：2020-05-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Wei ZHAO ,  Jianzhang XIE ,  Yihan Yao ,  Xufeng Wu

IPC: H02M3/158 ,  H02J7/02 ,  H02M1/08

Abstract: A system includes an input voltage node configured to provide an input voltage (VIN). The system also includes a load (RLOAD) and a switching converter coupled between the input voltage node and the load (RLOAD). The switching converter is configured to provide an output voltage (VOUT) to the load (RLOAD) based on the input voltage (VIN). The switching converter includes gate driver circuitry and a current mode control circuit coupled to the gate driver circuitry. The current mode control circuit is configured to output control signals to the gate driver circuitry in accordance with different modes of operation, wherein the current mode control circuit is configured to adjust a threshold (IPSM*) used to switch between a discontinuous conduction mode (DCM) and a power save mode (PSM).

公开(公告)号：US11496050B2

公开(公告)日：2022-11-08

申请号：US17204360

申请日：2021-03-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Xufeng Wu ,  Wei Zhao ,  Yueming Sun

IPC: H02M3/158 ,  H02M3/157 ,  H02M1/32 ,  H02M1/00 ,  H02M1/38

Abstract: A device includes a first FET coupled between first and drive terminals, and is configured to turn on/off responsive to a PWM signal having a first/second state, respectively. A second FET is coupled between the first and drive terminals and is configured to turn on responsive to the PWM signal having the first state, and turn off responsive to expiration of a particular delay after the second FET turns on. A third FET is coupled between drive and second terminals, and is configured to turn on/off responsive to the PWM signal having the second/first state, respectively. A fourth FET is coupled between the drive and second terminals, and is configured to turn on responsive to the PWM signal having the second state if a switching terminal has a first voltage, and turn off responsive to the PWM signal having the first state or the switching terminal having a second voltage.