Patents by Inventor Jürgen Lübbe
Jürgen Lübbe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10979037Abstract: In described examples, a power interface subsystem includes power transistors, each having: a conduction path coupled between a battery terminal and an accessory terminal; and a control terminal. A differential amplifier has: a first input coupled to the battery terminal; a second input coupled to the accessory terminal; and an output node. An offset voltage source is coupled to cause an offset of a selected polarity at one of the inputs to the differential amplifier. The offset has a first polarity in a first operating mode and a second polarity in a second operating mode. Gate control circuitry is coupled to apply a control level at the control terminal(s) of selected one(s) of the power transistors responsive to a voltage at the output node, and to apply an off-state control level to the control terminal(s) of unselected one(s) of the power transistors.Type: GrantFiled: October 22, 2018Date of Patent: April 13, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Sujan Kundapur Manohar, Roland Karl Son, Juergen Luebbe, Eddie W. Yu
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Patent number: 10873020Abstract: A piezoelectric sensor with: (i) a capacitive element, comprising piezoelectric material; (ii) a pre-conditioning circuit, comprising circuitry for establishing a polarization of the capacitive element in a polarizing mode; and (iii) signal amplification circuitry for providing a piezoelectric-responsive output signal, in response to charge across the capacitive element in a sensing mode.Type: GrantFiled: August 8, 2017Date of Patent: December 22, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Wei-Yan Shih, Sudhanshu Khanna, Michael Zwerg, Juergen Luebbe, Gregory Allen North, Steven C. Bartling, Leah Trautmann, Scott Robert Summerfelt
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Publication number: 20190058463Abstract: In described examples, a power interface subsystem includes power transistors, each having: a conduction path coupled between a battery terminal and an accessory terminal; and a control terminal. A differential amplifier has: a first input coupled to the battery terminal; a second input coupled to the accessory terminal; and an output node. An offset voltage source is coupled to cause an offset of a selected polarity at one of the inputs to the differential amplifier. The offset has a first polarity in a first operating mode and a second polarity in a second operating mode. Gate control circuitry is coupled to apply a control level at the control terminal(s) of selected one(s) of the power transistors responsive to a voltage at the output node, and to apply an off-state control level to the control terminal(s) of unselected one(s) of the power transistors.Type: ApplicationFiled: October 22, 2018Publication date: February 21, 2019Inventors: Sujan Kundapur Manohar, Roland Karl Son, Juergen Luebbe, Eddie W. Yu
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Patent number: 10211767Abstract: An integrated circuit includes a motor current input voltage-to-current (VI) converter that receives a motor current sensor voltage from a motor and a reference voltage to generate an output current related to a motor's current. A motor current calibration VI converter compensates for errors in the motor current input VI converter and generates a calibration output current based on the reference voltage, wherein the output current and the calibration output current are combined to form an estimate of the motor's current.Type: GrantFiled: January 3, 2017Date of Patent: February 19, 2019Assignee: Texas Instruments IncorporatedInventors: Qunying Li, Juergen Luebbe, Robert E. Whyte, Jr.
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Publication number: 20190051812Abstract: A piezoelectric sensor with: (i) a capacitive element, comprising piezoelectric material; (ii) a pre-conditioning circuit, comprising circuitry for establishing a polarization of the capacitive element in a polarizing mode; and (iii) signal amplification circuitry for providing a piezoelectric-responsive output signal, in response to charge across the capacitive element in a sensing mode.Type: ApplicationFiled: August 8, 2017Publication date: February 14, 2019Inventors: Wei-Yan Shih, Sudhanshu Khanna, Michael Zwerg, Juergen Luebbe, Gregory Allen North, Steven C. Bartling, Leah Trautmann, Scott Robert Summerfelt
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Patent number: 10116291Abstract: In described examples, a power interface subsystem includes power transistors, each having: a conduction path coupled between a battery terminal and an accessory terminal; and a control terminal. A differential amplifier has: a first input coupled to the battery terminal; a second input coupled to the accessory terminal; and an output node. An offset voltage source is coupled to cause an offset of a selected polarity at one of the inputs to the differential amplifier. The offset has a first polarity in a first operating mode and a second polarity in a second operating mode. Gate control circuitry is coupled to apply a control level at the control terminal(s) of selected one(s) of the power transistors responsive to a voltage at the output node, and to apply an off-state control level to the control terminal(s) of unselected one(s) of the power transistors.Type: GrantFiled: August 9, 2016Date of Patent: October 30, 2018Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Sujan Kundapur Manohar, Roland Karl Son, Juergen Luebbe, Eddie W. Yu
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Patent number: 9893659Abstract: A circuit includes a driver circuit having a high side switch device and a low side switch device coupled to a load voltage node and a motor winding output. A controller operates the high side switch device and the low side switch device. The controller operates in a normal mode to supply current to the motor winding output for driving a motor winding when an external power supply is available to supply the load voltage node. In response to detecting a loss of the external power supply, the controller operates the high side switch device and the low side switch device in a boost mode to utilize a back electromotive force (BEMF) voltage from the motor winding to supply current to the load voltage node.Type: GrantFiled: February 9, 2016Date of Patent: February 13, 2018Assignee: Texas Instruments IncorporatedInventors: Seil Oh, Tuan V. Tran, David R. Street, Juergen Luebbe, Quang Dieu An, John K. Rote
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Patent number: 9831852Abstract: In described examples, a transistor has: a source and a drain coupled between a supply voltage and an output terminal; and a gate terminal. A charge pump has: an output node coupled to the gate terminal; and a clock input. An oscillator is coupled to generate a clock signal. A clock enable circuit is coupled to: receive the clock signal; and selectively output the clock signal to the clock input, responsive to an enable signal. A comparator is coupled to output the enable signal in response to a comparison between a reference current and a current through a series resistor. The series resistor is coupled to the gate terminal.Type: GrantFiled: August 23, 2016Date of Patent: November 28, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Emmanuel Osei Boakye, Roland Karl Son, Juergen Luebbe
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Publication number: 20170117835Abstract: An integrated circuit includes a motor current input voltage-to-current (VI) converter that receives a motor current sensor voltage from a motor and a reference voltage to generate an output current related to a motor's current. A motor current calibration VI converter compensates for errors in the motor current input VI converter and generates a calibration output current based on the reference voltage, wherein the output current and the calibration output current are combined to form an estimate of the motor's current.Type: ApplicationFiled: January 3, 2017Publication date: April 27, 2017Inventors: Qunying Li, Juergen Luebbe, Robert E. Whyte, JR.
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Publication number: 20170063369Abstract: In described examples, a transistor has: a source and a drain coupled between a supply voltage and an output terminal; and a gate terminal. A charge pump has: an output node coupled to the gate terminal; and a clock input. An oscillator is coupled to generate a clock signal. A clock enable circuit is coupled to: receive the clock signal; and selectively output the clock signal to the clock input, responsive to an enable signal. A comparator is coupled to output the enable signal in response to a comparison between a reference current and a current through a series resistor. The series resistor is coupled to the gate terminal.Type: ApplicationFiled: August 23, 2016Publication date: March 2, 2017Inventors: Emmanuel Osei Boakye, Roland Karl Son, Juergen Luebbe
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Patent number: 9575473Abstract: An integrated circuit includes a motor current input voltage-to-current (VI) converter that receives a motor current sensor voltage from a motor and a reference voltage to generate an output current related to a motor's current. A motor current calibration VI converter compensates for errors in the motor current input VI converter and generates a calibration output current based on the reference voltage, wherein the output current and the calibration output current are combined to form an estimate of the motor's current.Type: GrantFiled: August 7, 2015Date of Patent: February 21, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Qunying Li, Juergen Luebbe, Robert E. Whyte, Jr.
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Publication number: 20170047731Abstract: In described examples, a power interface subsystem includes power transistors, each having: a conduction path coupled between a battery terminal and an accessory terminal; and a control terminal. A differential amplifier has: a first input coupled to the battery terminal; a second input coupled to the accessory terminal; and an output node. An offset voltage source is coupled to cause an offset of a selected polarity at one of the inputs to the differential amplifier. The offset has a first polarity in a first operating mode and a second polarity in a second operating mode. Gate control circuitry is coupled to apply a control level at the control terminal(s) of selected one(s) of the power transistors responsive to a voltage at the output node, and to apply an off-state control level to the control terminal(s) of unselected one(s) of the power transistors.Type: ApplicationFiled: August 9, 2016Publication date: February 16, 2017Inventors: Sujan Kundapur Manohar, Roland Karl Son, Juergen Luebbe, Eddie W. Yu
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Publication number: 20160233805Abstract: A circuit includes a driver circuit having a high side switch device and a low side switch device coupled to a load voltage node and a motor winding output. A controller operates the high side switch device and the low side switch device. The controller operates in a normal mode to supply current to the motor winding output for driving a motor winding when an external power supply is available to supply the load voltage node. In response to detecting a loss of the external power supply, the controller operates the high side switch device and the low side switch device in a boost mode to utilize a back electromotive force (BEMF) voltage from the motor winding to supply current to the load voltage node.Type: ApplicationFiled: February 9, 2016Publication date: August 11, 2016Inventors: SEIL OH, Tuan V. Tran, David R. Street, Juergen Luebbe, Quang Dieu An, John K. Rote
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Publication number: 20150346699Abstract: An integrated circuit includes a motor current input voltage-to-current (VI) converter that receives a motor current sensor voltage from a motor and a reference voltage to generate an output current related to a motor's current. A motor current calibration VI converter compensates for errors in the motor current input VI converter and generates a calibration output current based on the reference voltage, wherein the output current and the calibration output current are combined to form an estimate of the motor's current.Type: ApplicationFiled: August 7, 2015Publication date: December 3, 2015Inventors: Qunying Li, Juergen Luebbe, Robert E. Whyte, JR.
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Patent number: 9136787Abstract: An integrated circuit includes a motor current input voltage-to-current (VI) converter that receives a motor current sensor voltage from a motor and a reference voltage to generate an output current related to a motor's current. A motor current calibration VI converter compensates for errors in the motor current input VI converter and generates a calibration output current based on the reference voltage, wherein the output current and the calibration output current are combined to form an estimate of the motor's current.Type: GrantFiled: October 8, 2013Date of Patent: September 15, 2015Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Qunying Li, Juergen Luebbe, Robert E. Whyte, Jr.
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Publication number: 20140117903Abstract: An integrated circuit includes a motor current input voltage-to-current (VI) converter that receives a motor current sensor voltage from a motor and a reference voltage to generate an output current related to a motor's current. A motor current calibration VI converter compensates for errors in the motor current input VI converter and generates a calibration output current based on the reference voltage, wherein the output current and the calibration output current are combined to form an estimate of the motor's current.Type: ApplicationFiled: October 8, 2013Publication date: May 1, 2014Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Qunying LI, Juergen LUEBBE, Robert E. WHYTE, JR.
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Patent number: 8134318Abstract: A system for implementing current shaping for retract of a voice coil motor (VCM) includes drive circuitry coupled to drive the VCM according to a logic state of the system. Current shaping circuitry is configured to temporarily decrease the bandwidth of a VCM transconductance loop in response to a control signal. The transconductance loop includes at least the VCM, the current shaping circuitry and the drive circuitry. The system also includes logic configured to provide the control signal at an end portion a drive logic state to enter a current shaping logic state as a transition from the drive logic state to a floating logic state to reduce current through the VCM such that acoustic emissions from the VCM are mitigated during the retract.Type: GrantFiled: February 27, 2009Date of Patent: March 13, 2012Assignee: Texas Instruments IncorporatedInventors: Julio Enrique Ayala, II, Juergen Luebbe
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Patent number: 7948199Abstract: An electrical apparatus comprising an amplifier having a first input, a second input, and an output. The apparatus further comprises a first electrical path coupled to the first input and having a first resistance and a first electrical path coupled to the second input and having a second resistance. The apparatus further comprises a second electrical path coupled to the second input and having a third resistance and a second electrical path, comprising an electrically-controllable resistance, coupled between the output and the first input. Further, the apparatus comprises circuitry for controlling the electrically-controllable resistance for adjusting a ratio between the electrically-controllable resistance and the third resistance to approximate a ratio between the first resistance and the second resistance.Type: GrantFiled: May 30, 2008Date of Patent: May 24, 2011Assignee: Texas Instruments IncorporatedInventors: Qunying Li, Juergen Luebbe
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Patent number: 7928703Abstract: One embodiment of the invention includes an on-chip current-sense system for measuring a magnitude of an output current through a power transistor. The system includes a first sense transistor that conducts a first reference current to or from a phase node and a second sense transistor configured to conduct a second reference current to or from a power rail. The first and second sense transistors can be substantially identical and can be proportionally matched to the power transistor. An OTA receives the first and second reference currents and a third reference current that flows to or from the phase node and generates a sense current that is proportional to the output current in response to the first, second, and third reference currents. A sense circuit compares the sense current with a predetermined magnitude and generates an over-current signal in response to the sense current being greater than the predetermined magnitude to indicate an over-current condition of the output current.Type: GrantFiled: April 30, 2009Date of Patent: April 19, 2011Assignee: Texas Instruments IncorporatedInventors: Wenxiao Tan, Juergen Luebbe
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Patent number: 7834608Abstract: One embodiment of the invention includes a hysteretic power regulator system. The system includes a switching stage configured to periodically couple an input voltage to an inductor in response to a control signal to generate an output voltage. The system also includes a hysteretic control stage configured to generate the control signal based on a comparison of a feedback voltage associated with the output voltage and a predetermined reference voltage. The system also includes a feed-forward stage configured to generate a feed-forward ramp voltage in response to the control signal. The feed-forward ramp voltage can be added to the feedback voltage to set a frequency of the control signal. The system further includes a compensation stage configured to cancel a DC error associated with the feed-forward ramp voltage relative to the feedback voltage to substantially mitigate errors associated with the output voltage.Type: GrantFiled: November 18, 2008Date of Patent: November 16, 2010Assignee: Texas Instruments IncorporatedInventors: Dongjie Cheng, Joao Carlos Felicio Brito, Juergen Luebbe