公开(公告)号：US20210296986A1

公开(公告)日：2021-09-23

申请号：US17204360

申请日：2021-03-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Xufeng WU ,  Wei ZHAO ,  Yueming SUN

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

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.

公开(公告)号：US20200373841A1

公开(公告)日：2020-11-26

申请号：US16794110

申请日：2020-02-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jianzhang XIE ,  Wei ZHAO ,  Yihan YAO ,  Yue WU

IPC: H02M3/158

Abstract: Aspects of the disclosure provide for a circuit. In some examples, the circuit includes a timing circuit and a state machine circuit. The timing circuit determines a relationship between a duty cycle of a power converter and a threshold value. The state machine circuit is coupled to the timing circuit and includes a plurality of states including a buck state, a boost state, and a buck-boost state. The state machine circuit transitions among the plurality of states according to time domain control and voltage domain control, based at least partially on the determined relationship between the duty cycle and the threshold value, transitions among the states according to the time domain control when the time domain control indicates an exit from the buck-boost state, and transitions among the states according to the voltage domain control when the voltage domain control indicates the exit from a buck-boost state.

公开(公告)号：US20200266702A1

公开(公告)日：2020-08-20

申请号：US16711200

申请日：2019-12-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Wei ZHAO ,  Jianzhang XIE

IPC: H02M3/07 ,  H03K4/06

Abstract: Aspects of the disclosure provide for a circuit. In some examples, the circuit includes a first charging path including a first capacitor coupled to a first output node. The circuit further includes a second charging path comprising a first switch and a second capacitor. The circuit further includes a third charging path comprising a second switch and a third capacitor. The circuit further includes a first discharging path comprising the second capacitor, a third switch coupled between the second charging path and a second output node, and a fourth switch coupled between the second charging path and a fourth node. The circuit further includes a second discharging path comprising the third capacitor, a fifth switch coupled between the third charging path and the second output node, and a sixth switch coupled between the third node and the fourth node.

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：US20180039351A1

公开(公告)日：2018-02-08

申请号：US15373929

申请日：2016-12-09

Applicant: Texas Instruments Incorporated

Inventor： Ling ZHU ,  Lixin CHEN ,  KangCheng XU ,  Wei ZHAO

IPC: G06F3/044 ,  G06F3/046

Abstract: In described examples, an apparatus includes a metal plate having a plurality of defined areas forming touch sensors on a first planar surface, and having an opposing planar surface. The metal plate is arranged to be deformable in the plurality of defined areas by a human touch. A circuit board has a plurality of conductive sensors on a first surface arranged with the plurality of conductive sensors facing and spaced from the opposing planar surface of the metal plate, the conductive sensors placed in correspondence with the defined areas on the metal plate so that deflection sensors are formed in the defined areas by the conductive sensors and the opposing planar surface of the metal plate. Methods are described.