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11.发明授权公开(公告)号：US09812960B2
公开(公告)日：2017-11-07
申请号：US14983227
申请日：2015-12-29
Applicant: Texas Instruments Incorporated
Inventor： Keith Edmund Kunz , Vipul Kumar Singhal , Rajat Chauhan , Per Torstein Røine , Danielle Griffith
CPC classification number: H02M3/158 , H02M3/156 , H02M2001/0032 , H02M2003/1566 , Y02B70/16
Abstract: Methods and apparatus for DC-DC power controller with low standby current and fast transient response. In an example arrangement, an apparatus includes a voltage converter outputting a direct current output voltage, configured to increase the output voltage responsive to an enable control signal; at least one feedback comparator configured to output a first control signal, the feedback comparator being active responsive to an edge at a clock signal input; an adjustable frequency oscillator for outputting a first clock signal; and a fast transient detect circuit configured to output a second signal asynchronously upon detecting a rapid change greater than a voltage threshold in the output voltage; the voltage converter receiving the enable control signal when either the first clock signal is active, or the second signal is active and the output voltage is less than a reference voltage. Additional apparatus and methods are disclosed.
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12.发明申请公开(公告)号：US20170187286A1
公开(公告)日：2017-06-29
申请号：US14983227
申请日：2015-12-29
Applicant: Texas Instruments Incorporated
Inventor： Keith Edmund Kunz , Vipul Kumar Singhal , Rajat Chauhan , Per Torstein Røine , Danielle Griffith
IPC: H02M3/158
CPC classification number: H02M3/158 , H02M3/156 , H02M2001/0032 , H02M2003/1566 , Y02B70/16
Abstract: Methods and apparatus for DC-DC power controller with low standby current and fast transient response. In an example arrangement, an apparatus includes a voltage converter outputting a direct current output voltage, configured to increase the output voltage responsive to an enable control signal; at least one feedback comparator configured to output a first control signal, the feedback comparator being active responsive to an edge at a clock signal input; an adjustable frequency oscillator for outputting a first clock signal; and a fast transient detect circuit configured to output a second signal asynchronously upon detecting a rapid change greater than a voltage threshold in the output voltage; the voltage converter receiving the enable control signal when either the first clock signal is active, or the second signal is active and the output voltage is less than a reference voltage. Additional apparatus and methods are disclosed.
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公开(公告)号：US20170155397A1
公开(公告)日：2017-06-01
申请号：US15430182
申请日：2017-02-10
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Arun Paidimarri , Danielle Griffith , Alice Wang
CPC classification number: H03L7/24 , H03B1/00 , H03B5/20 , H03B5/24 , H03B5/26 , H03B5/32 , H03B2200/0082 , H03L7/0802
Abstract: Systems and methods of low power docking of sleep mode radios are disclosed herein. In an example embodiment, a crystal oscillator is purposefully mistuned to achieve lower power consumption, and then synchronized using a high frequency crystal oscillator. In an alternative embodiment, the input offset voltages of the comparator in an RC oscillator are cancelled, which allows low power operation and high accuracy performance when tuned to the high frequency crystal. A lower power comparator may be used with higher input offset voltages but still achieve higher accuracy. The RC circuit is switched back and forth on opposite phases of the output, cancelling the offset voltage on the inputs of the comparator.
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公开(公告)号：US20250119171A1
公开(公告)日：2025-04-10
申请号：US18650605
申请日：2024-04-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Danielle Griffith , Tomas Motos , Marius Moe
Abstract: A circuit includes a receiver configured to couple to an antenna, configured to have a wakeup mode and an active mode, and to transition from the wakeup mode to the active mode in response to a wakeup signal received through the antenna. The receiver includes an impedance matching circuit coupled with the antenna, a low-noise amplifier coupled with the impedance matching circuit, a mixer coupled with the low-noise amplifier, a radio-frequency reference clock generator coupled with the mixer, a low-pass filter coupled with the mixer, an analog-to digital-converter coupled with the low-pass filter, and a control circuit configured to transition the receiver from the wakeup mode to the active mode in response to the wakeup signal. The low-noise amplifier, the mixer, the radio frequency reference clock generator, and the analog-to-digital converter are configured to be duty-cycled between a sleep state and an active wakeup receive state during the wakeup mode.
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Patent Agency Ranking
公开(公告)号：US11852663B2
公开(公告)日：2023-12-26
申请号：US17824505
申请日：2022-05-25
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Rajat Chauhan , Danielle Griffith , Per Torstein Roine , James Murdock , Bernhard Ruck
IPC: G01R19/257 , H03M1/66 , G01R31/3835
CPC classification number: G01R19/257 , G01R31/3835 , H03M1/66
Abstract: One example relates to a monitoring circuit that includes a capacitive digital-to-analog converter that receives a binary code, a reference voltage, a monitored voltage, and a ground reference, the capacitive digital-to-analog converter outputting an analog signal based on the binary code, the reference voltage, the monitored voltage, and the ground reference. The monitoring circuit further includes a comparator including a first input coupled to receive the analog signal and a second input coupled to the reference voltage, the comparator comparing the analog signal to the reference voltage and outputting a comparator signal based on the comparison. The monitoring circuit yet further includes a binary code generator that generates the binary code based on the comparator signal, the binary code approximating a magnitude of the monitored voltage.
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公开(公告)号：US11372032B2
公开(公告)日：2022-06-28
申请号：US15717219
申请日：2017-09-27
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Rajat Chauhan , Danielle Griffith , Per Torstein Roine , James Murdock , Bernhard Ruck
IPC: G01R19/257 , H03M1/66 , G01R31/3835
Abstract: One example relates to a monitoring circuit that includes a capacitive digital-to-analog converter that receives a binary code, a reference voltage, a monitored voltage, and a ground reference, the capacitive digital-to-analog converter outputting an analog signal based on the binary code, the reference voltage, the monitored voltage, and the ground reference. The monitoring circuit further includes a comparator including a first input coupled to receive the analog signal and a second input coupled to the reference voltage, the comparator comparing the analog signal to the reference voltage and outputting a comparator signal based on the comparison. The monitoring circuit yet further includes a binary code generator that generates the binary code based on the comparator signal, the binary code approximating a magnitude of the monitored voltage.
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公开(公告)号：US10069501B2
公开(公告)日：2018-09-04
申请号：US15070810
申请日：2016-03-15
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Kunhee Cho , Danielle Griffith , James Murdock , Per Torstein Roine
Abstract: A circuit includes an oscillator having a driver and a resonator. The driver receives a supply voltage at a supply input and provides a drive output to drive the resonator to generate an oscillator output signal. A power converter receives an input voltage and generates the supply voltage to the supply input of the driver. The power converter varies the supply voltage based on an adjust command supplied to a command input of the power converter. A detector monitors a voltage level of the oscillator output signal. A controller sets the adjust command to the power converter to control the supply voltage to the supply input of the driver such that the voltage level of the oscillator output signal is set at or above a predetermined threshold voltage.
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公开(公告)号：US09853651B2
公开(公告)日：2017-12-26
申请号：US15430182
申请日：2017-02-10
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Arun Paidimarri , Danielle Griffith , Alice Wang
CPC classification number: H03L7/24 , H03B1/00 , H03B5/20 , H03B5/24 , H03B5/26 , H03B5/32 , H03B2200/0082 , H03L7/0802
Abstract: Systems and methods of low power docking of sleep mode radios are disclosed herein. In an example embodiment, a crystal oscillator is purposefully mistuned to achieve lower power consumption, and then synchronized using a high frequency crystal oscillator. In an alternative embodiment, the input offset voltages of the comparator in an RC oscillator are cancelled, which allows low power operation and high accuracy performance when tuned to the high frequency crystal. A lower power comparator may be used with higher input offset voltages but still achieve higher accuracy. The RC circuit is switched back and forth on opposite phases of the output, cancelling the offset voltage on the inputs of the comparator.
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19.发明授权公开(公告)号：US09515604B2
公开(公告)日：2016-12-06
申请号：US14584726
申请日：2014-12-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Danielle Griffith , Per Torstein Roine , James Murdock , Ryan Smith
Abstract: A circuit includes a crystal oscillator to generate an output frequency for a circuit. A driving oscillator generates a startup signal having a driving frequency that is provided to activate the crystal oscillator. The driving frequency of the startup signal is varied over a range of frequencies that encompass the operating frequency of the crystal oscillator to facilitate startup of the crystal oscillator.
Abstract translation: 电路包括用于产生电路的输出频率的晶体振荡器。 驱动振荡器产生具有提供以激活晶体振荡器的驱动频率的启动信号。 启动信号的驱动频率在包含晶体振荡器的工作频率的频率范围内变化以便于启动晶体振荡器。
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