公开(公告)号：US20230353037A1

公开(公告)日：2023-11-02

申请号：US18221012

申请日：2023-07-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Wei Zhao ,  Jianzhang Xie

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

CPC classification number: H02M1/08 ,  H02M3/158 ,  H02M1/0041 ,  H02M1/0025

Abstract: A converter system includes a first switch and a controller configured to switch the first switch between first and second states based on input and output voltages of the converter system. The controller includes: a timer unit including a first timer configured to determine a first duration based on a target switching frequency of the converter system; and a second timer configured to determine a second duration based on a predetermined duration equal to or greater than a minimum duration of the first state of the first switch and the input and output voltages; and a control logic unit configured to switch the first switch from the second state to the first state responsive to expiration of both the first and second durations.

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.

公开(公告)号：US11183930B2

公开(公告)日：2021-11-23

申请号：US16426942

申请日：2019-05-30

Applicant: Texas Instruments Incorporated

Inventor： Jian Liang ,  Wei Zhao ,  Weiwei Xiong

IPC: H05B3/04 ,  H05B39/00 ,  H02M3/157 ,  H02M1/08 ,  H04B10/80 ,  H02M1/00

Abstract: An optical communication system includes a light source and an output capacitor coupled to the light source. The system also includes a switching converter circuit coupled to the output capacitor. The switching converter circuit is configured to provide an output voltage to the output capacitor based on an active mode and a power-save mode. The switching converter circuit includes a controller configured to perform pulse gating in the power-save mode based on a timer and a comparison of the output voltage with a voltage threshold.

公开(公告)号：US11362584B2

公开(公告)日：2022-06-14

申请号：US16711200

申请日：2019-12-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Wei Zhao ,  Jianzhang Xie

IPC: H02M3/00 ,  H02M3/07 ,  H03K4/06 ,  H02M1/00 ,  H03K4/50

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：US11750078B2

公开(公告)日：2023-09-05

申请号：US16876897

申请日：2020-05-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Wei Zhao ,  Jianzhang Xie

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

CPC classification number: H02M1/08 ,  H02M1/0041 ,  H02M3/158 ,  H02M1/0025

Abstract: A converter system includes a first switch and a controller configured to switch the first switch between first and second states based on input and output voltages of the converter system, wherein the controller includes: a timer unit including a first timer configured to determine a first duration based on a target switching frequency of the converter system, and a second timer configured to determine a second duration based on a predetermined duration equal to or greater than a minimum duration of the first state of the first switch and the input and output voltages; and a control logic unit, configured to switch the first switch from the second state to the first state upon expiration of both the first and second durations.

公开(公告)号：US11418119B2

公开(公告)日：2022-08-16

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：US20210211047A1

公开(公告)日：2021-07-08

申请号：US16876897

申请日：2020-05-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Wei Zhao ,  Jianzhang Xie

IPC: H02M3/157 ,  H02M3/158 ,  H02M1/08

Abstract: A converter system includes a first switch and a controller configured to switch the first switch between first and second states based on input and output voltages of the converter system, wherein the controller includes: a timer unit including a first timer configured to determine a first duration based on a target switching frequency of the converter system, and a second timer configured to determine a second duration based on a predetermined duration equal to or greater than a minimum duration of the first state of the first switch and the input and output voltages; and a control logic unit, configured to switch the first switch from the second state to the first state upon expiration of both the first and second durations.

公开(公告)号：US10666144B1

公开(公告)日：2020-05-26

申请号：US16449659

申请日：2019-06-24

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Linghan Xie ,  Jianzhang Xie ,  Wei Zhao ,  Weicheng Zhang

IPC: H02M3/158 ,  H02M3/335 ,  G05F1/10 ,  H02M1/38 ,  H02M1/00

Abstract: A DC-DC converter controller includes a transistor driver, a flip-flop, a comparator, an integrator circuit, a switch, and a pulse generator circuit. The flip-flop includes an output coupled to an input of the transistor driver. The comparator includes an output coupled an input of the flip-flop. The integrator circuit includes an output coupled to an input of the comparator. The switch includes a first terminal coupled to the output of the integrator circuit, and a second terminal coupled to ground. The pulse generator circuit includes an input coupled to an output of the transistor driver, and an output coupled to a third terminal of the switch.