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公开(公告)号：US20210399638A1
公开(公告)日：2021-12-23
申请号：US17348122
申请日：2021-06-15
Applicant: Texas Instruments Incorporated
Inventor： Yinglai Xia , Yogesh Ramadass , Jessica Danielle Boles
Abstract: A power converter including a piezoelectric resonator. The power converter includes a first transistor coupled between an input terminal and a first plate of the piezoelectric resonator, and a second transistor coupled between the first plate of the piezoelectric resonator and an output terminal. A load may be coupled at the output terminal. Controller circuitry has inputs coupled to the input node, the output node, and to the first plate of the piezoelectric resonator, and outputs coupled to control terminals of the first and second transistors. The controller circuitry operates to turn on the first transistor responsive to a comparison of voltages at the first plate and the input terminal, turn on the second transistor responsive to a comparison of voltages at the first plate and the output terminal, and turn off one of the first and second transistors responsive to an output level at the output terminal.
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Patent Agency Ranking
公开(公告)号：US11081955B2
公开(公告)日：2021-08-03
申请号：US15716647
申请日：2017-09-27
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Sujan K. Manohar , Shailendra Baranwal , Jeffrey Morroni , Michael Lueders , Yogesh Ramadass
Abstract: A system includes a high side transistor switch coupled to a first voltage node and a low side transistor switch coupled to the high side transistor switch at a switch node. The system further includes a unidirectional decoupling capacitor circuit including a capacitive component. The unidirectional decoupling capacitor circuit is coupled between the first voltage node and a common potential. Responsive to a voltage on the first voltage node being more than a threshold greater than an input voltage to the first voltage node, the unidirectional decoupling capacitor circuit is configured to sink current from the first voltage node to the capacitive component. The capacitive component can therefore be charged, with the charge used to subsequently power a load.
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公开(公告)号：US20250080920A1
公开(公告)日：2025-03-06
申请号：US18240668
申请日：2023-08-31
Applicant: Texas Instruments Incorporated
Inventor： Bichoy Bahr , Udit Rawat , Mohit Chawla , Yogesh Ramadass
Abstract: In one example, an audio device includes a substrate, a first piezoelectric flap, a second piezoelectric flap, a transmit circuit, a first receive circuit, a switch circuit, and a second receive circuit. The substrate has an opening. The first piezoelectric flap has a first end on the substrate and extending over the opening, the first piezoelectric flap having first and second terminals. The second piezoelectric flap has a second end on the substrate and extending over the opening, the second piezoelectric flap spaced from the first piezoelectric flap, the second piezoelectric flap having third and fourth terminals. The transmit circuit has driver outputs. The first receive circuit has first receiver inputs. The switch circuit coupled to the driver outputs and the first receiver inputs, and the first and second terminals. The second receive circuit has second receiver inputs coupled to the third and fourth terminals.
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公开(公告)号：US20250080918A1
公开(公告)日：2025-03-06
申请号：US18240676
申请日：2023-08-31
Applicant: Texas Instruments Incorporated
Inventor： Bichoy Bahr , Udit Rawat , Mohit Chawla , Yogesh Ramadass
IPC: H04R17/02 , H04R17/10 , H10N30/063 , H10N30/086 , H10N30/20 , H10N30/87
Abstract: In one example, an apparatus comprises a substrate, a first piezoelectric flap, and a second piezoelectric flap. The substrate has an opening. The first piezoelectric flap has a first end on the substrate and has a first portion extending over a first part of the opening, the first piezoelectric flap including first electrodes, in which the first electrodes extend no more than half of a first length of the first portion. The second piezoelectric flap has a second end on the substrate and has a second portion extending over a second part of the opening, the second piezoelectric flap including second electrodes, in which the second electrodes extend no more than half of a second length of the second portion.
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15.发明授权公开(公告)号：US12095471B2
公开(公告)日：2024-09-17
申请号：US17936505
申请日：2022-09-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Bichoy Bahr , Yogesh Ramadass
CPC classification number: H03L7/0995 , H03B5/326 , H03H9/02244 , H03K3/0231 , H03L7/085 , H03M1/46
Abstract: A clock circuit includes a voltage-controlled oscillator (VCO) having a control input and a first clock output. The clock circuit includes a frequency-locked loop (FLL) having an FLL input and a control output, the control output coupled to the control input. A microelectromechanical system (MEMS) resonator-based oscillator has a second clock output. A multiplexer has a first multiplexer input, a second multiplexer input, a selection input, and a multiplexer output. The first multiplexer input is coupled to the first clock output. The second multiplexer input is coupled to the second clock output. The multiplexer output is coupled to the FLL input.
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公开(公告)号：US09746868B2
公开(公告)日：2017-08-29
申请号：US13768983
申请日：2013-02-15
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aatmesh Shrivastava , Yogesh Ramadass , Steven Bartling
CPC classification number: G05F3/08 , H02J1/00 , H02M3/1563 , H02M3/1582 , Y10T307/50 , Y10T307/696
Abstract: A system comprising an ambient energy source, a power supply, and a power storage device. The ambient energy source is coupled to a first terminal end of an inductor. The power supply is also coupled to the first terminal end of the inductor. The power storage device is coupled to a second terminal end of the inductor. The ambient energy source provides power through the inductor in a first direction to the power storage device. The power storage device provides power through the inductor to the power supply in a second direction opposite the first direction.
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