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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
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.
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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
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.
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公开(公告)号：US20170324327A1
公开(公告)日：2017-11-09
申请号：US15492884
申请日：2017-04-20
Applicant: Texas Instruments Incorporated
Inventor： Jianzhang Xie
CPC classification number: H02M3/158 , H02M1/08 , H02M3/1588 , H02M2001/0054 , Y02B70/1466 , Y02B70/1491
Abstract: A DC-to-DC converter includes an input voltage node, an inductor, and a switch coupled to the inductor and the input voltage node. More specifically, the switch has an on state and off state, wherein during the on state, current flowing through the inductor increases and the off state results in a decrease of the current flowing through the inductor via a driver coupled to the switch. The driver comprises a plurality of transistors and an adaptive voltage node, wherein a voltage level at the adaptive voltage node is to vary in accordance with the current flowing through the inductor so as to decrease a variation of the amount of time to turn off the switch.
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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
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.
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Patent Agency Ranking
公开(公告)号：US10020733B2
公开(公告)日：2018-07-10
申请号：US15492884
申请日：2017-04-20
Applicant: Texas Instruments Incorporated
Inventor： Jianzhang Xie
CPC classification number: H02M3/158 , H02M1/08 , H02M3/1588 , H02M2001/0054 , H03K17/04206 , H03K17/145 , H03K17/166 , Y02B70/1466 , Y02B70/1491
Abstract: A DC-to-DC converter includes an input voltage node, an inductor, and a switch coupled to the inductor and the input voltage node. More specifically, the switch has an on state and off state, wherein during the on state, current flowing through the inductor increases and the off state results in a decrease of the current flowing through the inductor via a driver coupled to the switch. The driver comprises a plurality of transistors and an adaptive voltage node, wherein a voltage level at the adaptive voltage node is to vary in accordance with the current flowing through the inductor so as to decrease a variation of the amount of time to turn off the switch.
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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
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.
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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.
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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
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.
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公开(公告)号：US09660528B2
公开(公告)日：2017-05-23
申请号：US14631178
申请日：2015-02-25
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Jianzhang Xie
CPC classification number: H02M3/158 , H02M1/08 , H02M3/1588 , H02M2001/0054 , Y02B70/1466 , Y02B70/1491
Abstract: A DC-to-DC converter includes an input voltage node, an inductor, and a switch coupled to the inductor and the input voltage node. More specifically, the switch has an on state and off state, wherein during the on state, current flowing through the inductor increases and the off state results in a decrease of the current flowing through the inductor via a driver coupled to the switch. The driver comprises a plurality of transistors and an adaptive voltage node, wherein a voltage level at the adaptive voltage node is to vary in accordance with the current flowing through the inductor so as to decrease a variation of the amount of time to turn off the switch.
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