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公开(公告)号：US20180059697A1
公开(公告)日：2018-03-01
申请号：US15248888
申请日：2016-08-26
Applicant: Texas Instruments Incorporated
Inventor： James Murdock , Danielle Griffith , Per Torstein Roine
Abstract: A reference generator provides a reference output voltage that is continuously available while providing certain efficiencies of a duty-cycled voltage regulator. The reference output voltage is generated by a sample-and-hold circuit that is coupled to a voltage regulator. On command, the sample-and-hold circuit samples a low dropout voltage regulator that may be referenced by a bandgap circuit. During hold periods of the sample-and-hold circuit, the voltage regulator, in particular the bandgap circuit, may be disabled in order to conserve power. A sample cycle by the sample-and-hold circuit may be triggered by a signal received from a configurable finite state machine. The reference generator is effectively duty cycled in a manner that conserves available battery power, while still providing a constant reference output that is always available. The reference generator is especially suited for low-power, battery operated applications.
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公开(公告)号：US09812948B2
公开(公告)日：2017-11-07
申请号：US14665843
申请日：2015-03-23
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Per Torstein Roine , Stefan Dannenberger , Danielle Griffith
Abstract: A method of operating a power up circuit is disclosed. The method includes receiving an input voltage and creating a plurality of sample voltages from the input voltage. One of the sample voltages is selected and compared to a reference voltage. The power up circuit produces a brown-out signal in response to the step of comparing.
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公开(公告)号：US09628088B2
公开(公告)日：2017-04-18
申请号：US14463658
申请日：2014-08-19
Applicant: Texas Instruments Incorporated
Inventor： Danielle Griffith , Viral Parikh , Ryan Smith , Per Torstein Roine
Abstract: Digital control of a crystal oscillator is implemented in a manner that allows frequency accuracy to be traded off dynamically with power consumption. The oscillator transitions between a less accurate/lower power mode and a high accuracy/higher power mode smoothly without requiring any external clock source during the transition. Power consumption is optimized because the crystal oscillator provides the clock source during transitions between the power modes and no other clock source is needed for these transitions. The system can also optimize the startup time and steady state power consumption independently.
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公开(公告)号：US20160285438A1
公开(公告)日：2016-09-29
申请号：US14665843
申请日：2015-03-23
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Per Torstein Roine , Stefan Dannenberger , Danielle Griffith
Abstract: A method of operating a power up circuit is disclosed. The method includes receiving an input voltage and creating a plurality of sample voltages from the input voltage. One of the sample voltages is selected and compared to a reference voltage. The power up circuit produces a brown-out signal in response to the step of comparing.
Abstract translation: 公开了一种操作上电电路的方法。 该方法包括从输入电压接收输入电压并产生多个采样电压。 选择一个采样电压并将其与参考电压进行比较。 上电电路响应于比较步骤产生欠压信号。
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公开(公告)号：US12206361B2
公开(公告)日：2025-01-21
申请号：US18078723
申请日：2022-12-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Hagen Graf , Danielle Griffith
Abstract: In examples, an electronic device comprises an oscillator circuit configured to provide an output signal and a controller coupled to the oscillator circuit. The controller is configured to receive first and second target rates; dynamically adjust a frequency accuracy of the output signal based on the first target rate; and dynamically adjust an amplitude of the output signal based on the second target rate.
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Patent Agency Ranking
公开(公告)号：US11416015B2
公开(公告)日：2022-08-16
申请号：US16918051
申请日：2020-07-01
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： James Murdock , Danielle Griffith , Per Torstein Roine
Abstract: A reference generator provides a reference output voltage that is continuously available while providing certain efficiencies of a duty-cycled voltage regulator. The reference output voltage is generated by a sample-and-hold circuit that is coupled to a voltage regulator. On command, the sample-and-hold circuit samples a low dropout voltage regulator that may be referenced by a bandgap circuit. During hold periods of the sample-and-hold circuit, the voltage regulator, in particular the bandgap circuit, may be disabled in order to conserve power. A sample cycle by the sample-and-hold circuit may be triggered by a signal received from a configurable finite state machine. The reference generator is effectively duty cycled in a manner that conserves available battery power, while still providing a constant reference output that is always available. The reference generator is especially suited for low-power, battery operated applications.
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公开(公告)号：US20200059197A1
公开(公告)日：2020-02-20
申请号：US16661245
申请日：2019-10-23
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. A temperature tracking device in the power converter controls the voltage level of the supply voltage to the supply input of the driver based on temperature such that the supply voltage varies inversely to the temperature of the circuit.
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公开(公告)号：US20150056934A1
公开(公告)日：2015-02-26
申请号：US14463658
申请日：2014-08-19
Applicant: Texas Instruments Incorporated
Inventor： Danielle Griffith , Viral Parikh , Ryan Smith , Per Torstein Roine
Abstract: Digital control of a crystal oscillator is implemented in a manner that allows frequency accuracy to be traded off dynamically with power consumption. The oscillator transitions between a less accurate/lower power mode and a high accuracy/higher power mode smoothly without requiring any external clock source during the transition. Power consumption is optimized because the crystal oscillator provides the clock source during transitions between the power modes and no other clock source is needed for these transitions. The system can also optimize the startup time and steady state power consumption independently.
Abstract translation: 晶体振荡器的数字控制以允许频率精度被动态地消耗功率的方式来实现。 振荡器在不太准确/较低功耗模式和高精度/高功率模式之间平滑转换，而不需要任何外部时钟源。 功耗被优化，因为晶体振荡器在功率模式之间的转换期间提供时钟源，并且这些转换不需要其他时钟源。 该系统还可以独立优化启动时间和稳态功耗。
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公开(公告)号：US11005419B2
公开(公告)日：2021-05-11
申请号：US16661245
申请日：2019-10-23
Applicant: Texas Instruments Incorporated
Inventor： Kunhee Cho , Danielle Griffith , James Murdock , Per Torstein Roine
IPC: H03B5/04 , H03B5/36 , H03B5/08 , H03B5/00 , H03B5/32 , H03L5/00 , H03L1/02 , H03L1/00 , H03L7/00 , H04W84/18
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. A temperature tracking device in the power converter controls the voltage level of the supply voltage to the supply input of the driver based on temperature such that the supply voltage varies inversely to the temperature of the circuit.
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10.发明授权公开(公告)号：US10719096B2
公开(公告)日：2020-07-21
申请号：US15248888
申请日：2016-08-26
Applicant: Texas Instruments Incorporated
Inventor： James Murdock , Danielle Griffith , Per Torstein Roine
Abstract: A reference generator provides a reference output voltage that is continuously available while providing certain efficiencies of a duty-cycled voltage regulator. The reference output voltage is generated by a sample-and-hold circuit that is coupled to a voltage regulator. On command, the sample-and-hold circuit samples a low dropout voltage regulator that may be referenced by a bandgap circuit. During hold periods of the sample-and-hold circuit, the voltage regulator, in particular the bandgap circuit, may be disabled in order to conserve power. A sample cycle by the sample-and-hold circuit may be triggered by a signal received from a configurable finite state machine. The reference generator is effectively duty cycled in a manner that conserves available battery power, while still providing a constant reference output that is always available. The reference generator is especially suited for low-power, battery operated applications.
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