Patents by Inventor Terence ORR
Terence ORR 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: 11844157Abstract: The present disclosure relates to current control circuitry for controlling a current through a load, the current control circuitry comprising: amplifier circuitry; reference voltage generator circuitry configured to supply a fixed reference voltage to a first input of the amplifier circuitry; an output stage comprising: a control terminal coupled to an output of the amplifier circuitry; a current input terminal configured to be coupled to the load; a current output terminal; a clock-controlled variable resistance coupled to the current output terminal of the output stage, wherein a resistance of the variable resistance is based on a digital code input to the variable resistance; and a feedback path between the current output terminal of the output stage and a second terminal of the amplifier circuitry for providing a feedback voltage to a second input of the amplifier circuitry.Type: GrantFiled: July 8, 2022Date of Patent: December 12, 2023Assignee: Cirrus Logic Inc.Inventors: Dave Smith, Saurabh Singh, Andrew Buist, Paulius Cerebiejus, Mark J. McCloy-Stevens, Terence A. Orr
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Publication number: 20220353970Abstract: The present disclosure relates to current control circuitry for controlling a current through a load, the current control circuitry comprising: amplifier circuitry; reference voltage generator circuitry configured to supply a fixed reference voltage to a first input of the amplifier circuitry; an output stage comprising: a control terminal coupled to an output of the amplifier circuitry; a current input terminal configured to be coupled to the load; a current output terminal; a clock-controlled variable resistance coupled to the current output terminal of the output stage, wherein a resistance of the variable resistance is based on a digital code input to the variable resistance; and a feedback path between the current output terminal of the output stage and a second terminal of the amplifier circuitry for providing a feedback voltage to a second input of the amplifier circuitry.Type: ApplicationFiled: July 8, 2022Publication date: November 3, 2022Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Dave SMITH, Saurabh SINGH, Andrew BUIST, Paulius CEREBIEJUS, Mark J. MCCLOY-STEVENS, Terence A. ORR
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Patent number: 11477868Abstract: The present disclosure relates to current control circuitry for controlling a current through a load. The current control circuitry comprises amplifier circuitry, reference voltage generator circuitry configured to supply a fixed reference voltage to a first input of the amplifier circuitry and an output stage comprising: a control terminal coupled to an output of the amplifier circuitry; a current input terminal configured to be coupled to the load; and a current output terminal. The current control circuitry further comprises a variable resistance coupled to the current output terminal of the output stage, and a feedback path between the current output terminal of the output stage and a second terminal of the amplifier circuitry for providing a feedback voltage to a second input of the amplifier circuitry.Type: GrantFiled: December 16, 2020Date of Patent: October 18, 2022Assignee: Cirrus Logic, Inc.Inventors: Dave Smith, Saurabh Singh, Andrew Buist, Paulius Cerebiejus, Mark J. McCloy-Stevens, Terence A. Orr
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Publication number: 20210219396Abstract: The present disclosure relates to current control circuitry for controlling a current through a load. The current control circuitry comprises amplifier circuitry, reference voltage generator circuitry configured to supply a fixed reference voltage to a first input of the amplifier circuitry and an output stage comprising: a control terminal coupled to an output of the amplifier circuitry; a current input terminal configured to be coupled to the load; and a current output terminal. The current control circuitry further comprises a variable resistance coupled to the current output terminal of the output stage, and a feedback path between the current output terminal of the output stage and a second terminal of the amplifier circuitry for providing a feedback voltage to a second input of the amplifier circuitry.Type: ApplicationFiled: December 16, 2020Publication date: July 15, 2021Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Dave SMITH, Saurabh SINGH, Andrew BUIST, Paulius CEREBIEJUS, Mark J. MCCLOY-STEVENS, Terence A. ORR
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Patent number: 10917053Abstract: This application relates to amplifier circuits for amplifying an audio signal. An amplifier circuit (100) has a voltage regulator (201) for outputting a supply voltage to an amplifier (104). An output capacitor (103) coupled to an output node of the voltage regulator. The voltage regulator is operable in a voltage-control mode to maintain the output voltage (VS) at a nominal output voltage and in current-control mode to limit the input current drawn to exceed a defined limit. A controller (301) is operable in a first mode to define the nominal output voltage so as not to exceed a first voltage magnitude and in a second mode to define the nominal output voltage to be equal to a second, higher, voltage magnitude.Type: GrantFiled: January 14, 2020Date of Patent: February 9, 2021Assignee: Cirrus Logic, Inc.Inventor: Terence Orr
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Publication number: 20200153393Abstract: This application relates to amplifier circuits for amplifying an audio signal. An amplifier circuit (100) has a voltage regulator (201) for outputting a supply voltage to an amplifier (104). An output capacitor (103) coupled to an output node of the voltage regulator. The voltage regulator is operable in a voltage-control mode to maintain the output voltage (VS) at a nominal output voltage and in current-control mode to limit the input current drawn to exceed a defined limit. A controller (301) is operable in a first mode to define the nominal output voltage so as not to exceed a first voltage magnitude and in a second mode to define the nominal output voltage to be equal to a second, higher, voltage magnitude.Type: ApplicationFiled: January 14, 2020Publication date: May 14, 2020Applicant: Cirrus Logic International Semiconductor Ltd.Inventor: Terence ORR
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Patent number: 10581391Abstract: This application relates to amplifier circuits for amplifying an audio signal. An amplifier circuit (100) has a voltage regulator (201) for outputting a supply voltage to an amplifier (104). An output capacitor (103) coupled to an output node of the voltage regulator. The voltage regulator is operable in a voltage-control mode to maintain the output voltage (VS) at a nominal output voltage and in current-control mode to limit the input current drawn to exceed a defined limit. A controller (301) is operable in a first mode to define the nominal output voltage so as not to exceed a first voltage magnitude and in a second mode to define the nominal output voltage to be equal to a second, higher, voltage magnitude.Type: GrantFiled: January 18, 2019Date of Patent: March 3, 2020Assignee: Cirrus Logic, Inc.Inventor: Terence Orr
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Publication number: 20190181811Abstract: This application relates to amplifier circuits for amplifying an audio signal. An amplifier circuit (100) has a voltage regulator (201) for outputting a supply voltage to an amplifier (104). An output capacitor (103) coupled to an output node of the voltage regulator. The voltage regulator is operable in a voltage-control mode to maintain the output voltage (VS) at a nominal output voltage and in current-control mode to limit the input current drawn to exceed a defined limit. A controller (301) is operable in a first mode to define the nominal output voltage so as not to exceed a first voltage magnitude and in a second mode to define the nominal output voltage to be equal to a second, higher, voltage magnitude.Type: ApplicationFiled: January 18, 2019Publication date: June 13, 2019Applicant: Cirrus Logic International Semiconductor Ltd.Inventor: Terence ORR
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Patent number: 10243524Abstract: This application relates to amplifier circuits for amplifying an audio signal. An amplifier circuit (100) has a voltage regulator (201) for outputting a supply voltage to an amplifier (104). An output capacitor (103) coupled to an output node of the voltage regulator. The voltage regulator is operable in a voltage-control mode to maintain the output voltage (VS) at a nominal output voltage and in current-control mode to limit the input current drawn to exceed a defined limit. A controller (301) is operable in a first mode to define the nominal output voltage so as not to exceed a first voltage magnitude and in a second mode to define the nominal output voltage to be equal to a second, higher, voltage magnitude.Type: GrantFiled: February 23, 2018Date of Patent: March 26, 2019Assignee: Cirrus Logic, Inc.Inventor: Terence Orr
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Publication number: 20180248525Abstract: This application relates to amplifier circuits for amplifying an audio signal. An amplifier circuit (100) has a voltage regulator (201) for outputting a supply voltage to an amplifier (104). An output capacitor (103) coupled to an output node of the voltage regulator. The voltage regulator is operable in a voltage-control mode to maintain the output voltage (VS) at a nominal output voltage and in current-control mode to limit the input current drawn to exceed a defined limit. A controller (301) is operable in a first mode to define the nominal output voltage so as not to exceed a first voltage magnitude and in a second mode to define the nominal output voltage to be equal to a second, higher, voltage magnitude.Type: ApplicationFiled: February 23, 2018Publication date: August 30, 2018Applicant: Cirrus Logic International Semiconductor Ltd.Inventor: Terence ORR