Patents by Inventor Julian Tyrrell
Julian Tyrrell 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: 11133623Abstract: A conductive liquid path detection circuit for detecting a conductive liquid present in a receptacle connector and/or a mating connector plug is configured for discharging an electron charge from any conductive liquid present on a connector pin in the receptacle connector and/or a mating connector plug. The conductive liquid path detection circuit charges any conductive liquid present on the connector pin with an electron charge. The circuit repeatedly samples and retains the samples of the measurements of a voltage level present at the connector pin. The conductive liquid path detection circuit then analyzes the samples of the measurements to determine a slope of the samples of the measurements of a voltage level over time; and determines when an amplitude of a final measurement of the voltage level is less than a conductive liquid detection threshold level.Type: GrantFiled: February 8, 2019Date of Patent: September 28, 2021Assignee: Dialog Semiconductor (UK) LimitedInventors: Julian Tyrrell, Andrew Repton, Gary Hague
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Patent number: 11114943Abstract: An inductive current sensing method for a DC-DC switching converter is described. A sense coil is placed adjacent to a PCB track between the switching converter output and a load powered by the switching converter. A change in a magnetic field is measured around the track, generating a voltage proportional to a change in a load current. The load current is subtracted from an inductor current, when a current needed on the switching converter output is higher than a current in a steady state. In this way, output voltage undershoot or overshoot in the DC-DC switching converter is minimized.Type: GrantFiled: October 18, 2018Date of Patent: September 7, 2021Assignee: Dialog Semiconductor (UK) LimitedInventors: Francesco Paolo, Julian Tyrrell
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Patent number: 11011977Abstract: A switched-capacitor converter is provided that includes an intermediate voltage generator having a flying capacitor. A sampling and hold circuit samples a top plate voltage for the flying capacitor and samples a bottom plate voltage for the flying capacitor to form an output voltage for the switched-capacitor converter.Type: GrantFiled: September 30, 2019Date of Patent: May 18, 2021Assignee: SILEGO TECHNOLOGY INC.Inventors: Kevin Yi Cheng Chang, Julian Tyrrell
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Publication number: 20210099078Abstract: A switched-capacitor converter is provided that includes an intermediate voltage generator having a flying capacitor. A sampling and hold circuit samples a top plate voltage for the flying capacitor and samples a bottom plate voltage for the flying capacitor to form an output voltage for the switched-capacitor converter.Type: ApplicationFiled: September 30, 2019Publication date: April 1, 2021Inventors: Kevin Yi Cheng CHANG, Julian TYRRELL
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Publication number: 20200259298Abstract: A conductive liquid path detection circuit for detecting a conductive liquid present in a receptacle connector and/or a mating connector plug is configured for discharging an electron charge from any conductive liquid present on a connector pin in the receptacle connector and/or a mating connector plug. The conductive liquid path detection circuit charges any conductive liquid present on the connector pin with an electron charge. The circuit repeatedly samples and retains the samples of the measurements of a voltage level present at the connector pin. The conductive liquid path detection circuit then analyzes the samples of the measurements to determine a slope of the samples of the measurements of a voltage level over time; and determines when an amplitude of a final measurement of the voltage level is less than a conductive liquid detection threshold level.Type: ApplicationFiled: February 8, 2019Publication date: August 13, 2020Inventors: Julian Tyrrell, Andrew Repton, Gary Hague
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Patent number: 10720885Abstract: Relax oscillation circuits have at least one comparison circuit that is structured with a flipped gate transistor and a normal MOS transistor wherein the two transistors having different threshold voltages. The relaxation oscillators are configured for charging and discharging capacitances between the threshold voltages of the flipped gate transistor and the normal MOS transistor by toggling the state of a latching circuit to control the charging and discharging of the capacitances.Type: GrantFiled: August 4, 2017Date of Patent: July 21, 2020Assignee: Dialog Semiconductor (UK) LimitedInventors: Daisuke Kobayashi, Julian Tyrrell
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Patent number: 10673367Abstract: An apparatus and method for controlling an oscillating device is presented. In particular, a controller for adjusting the frequency of a drive signal driving a haptic actuator is presented. The controller contains a calculator adapted to receive a first and a second measurement of the electrical parameter and to calculate a difference between the first measurement and the second measurement. The first measurement is obtained at a first sampling time and the second measurement is obtained at a second sampling time. The controller is adapted to provide a control signal to adjust a frequency of the drive signal based on the difference.Type: GrantFiled: March 21, 2017Date of Patent: June 2, 2020Assignee: Dialog Semiconductor (UK) LimitedInventors: David Eke, Vladislav Vasilev, David Tyndall, Julian Tyrrell
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Publication number: 20200127567Abstract: An inductive current sensing method for a DC-DC switching converter is described. A sense coil is placed adjacent to a PCB track between the switching converter output and a load powered by the switching converter. A change in a magnetic field is measured around the track, generating a voltage proportional to a change in a load current. The load current is subtracted from an inductor current, when a current needed on the switching converter output is higher than a current in a steady state. In this way, output voltage undershoot or overshoot in the DC-DC switching converter is minimized.Type: ApplicationFiled: October 18, 2018Publication date: April 23, 2020Inventors: Francesco Paolo, Julian Tyrrell
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Patent number: 10616985Abstract: A solid state lighting SSL assembly comprises an SSL device, a capacitor, a directional conducting device and a supply switch. The capacitor is coupled in parallel with the SSL device. The directional conducting device is coupled between an output terminal of the capacitor and a supply terminal which provides a supply voltage for the SSL assembly. The directional conducting device is configured to conduct in a direction from the output terminal to the supply terminal and to isolate in the opposite direction. The supply switch is coupled between the output terminal and ground. In addition, a method for operating a solid state lighting SSL assembly is proposed.Type: GrantFiled: November 1, 2019Date of Patent: April 7, 2020Assignee: Dialog Semiconductor (UK) LimitedInventors: Kaiwen He, Horst Knoedgen, Baorong Chen, Julian Tyrrell
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Publication number: 20200068677Abstract: A solid state lighting SSL assembly comprises an SSL device, a capacitor, a directional conducting device and a supply switch. The capacitor is coupled in parallel with the SSL device. The directional conducting device is coupled between an output terminal of the capacitor and a supply terminal which provides a supply voltage for the SSL assembly. The directional conducting device is configured to conduct in a direction from the output terminal to the supply terminal and to isolate in the opposite direction. The supply switch is coupled between the output terminal and ground. In addition, a method for operating a solid state lighting SSL assembly is proposed.Type: ApplicationFiled: November 1, 2019Publication date: February 27, 2020Inventors: Kaiwen He, Horst Knoedgen, Baorong Chen, Julian Tyrrell
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Patent number: 10477634Abstract: A solid state lighting SSL assembly comprises an SSL device, a capacitor, a directional conducting device and a supply switch. The capacitor is coupled in parallel with the SSL device. The directional conducting device is coupled between an output terminal of the capacitor and a supply terminal which provides a supply voltage for the SSL assembly. The directional conducting device is configured to conduct in a direction from the output terminal to the supply terminal and to isolate in the opposite direction. The supply switch is coupled between the output terminal and ground. In addition, a method for operating a solid state lighting SSL assembly is proposed.Type: GrantFiled: June 25, 2018Date of Patent: November 12, 2019Assignee: Dialog Semiconductor (UK) LimitedInventors: Kaiwen He, Horst Knoedgen, Baorong Chen, Julian Tyrrell
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Patent number: 10334667Abstract: A controller for a power converter to convert electrical power at an input voltage into electrical power at an output voltage and a method of operating such controller is presented. The controller for controlling a power converter has an input port to receive a voltage representative of the input voltage; an input voltage measuring unit to sample a measuring voltage and to determine a measurement value that is representative of the input voltage; a switch; and a diode connectable with a storage unit to provide a supply voltage for the controller during operation of the controller. The switch controls the charging of the storage unit from the voltage at the input port.Type: GrantFiled: October 5, 2016Date of Patent: June 25, 2019Assignee: Dialog Semiconductor (UK) LimitedInventors: Horst Knoedgen, Julian Tyrrell
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Patent number: 10206253Abstract: A controller for a power converter to convert electrical power at an input voltage into electrical power at an output voltage and a method of operating such controller is presented. The controller for controlling a power converter has an input port to receive a voltage representative of the input voltage; an input voltage measuring unit to sample a measuring voltage and to determine a measurement value that is representative of the input voltage; a switch; and a diode connectable with a storage unit to provide a supply voltage for the controller during operation of the controller. The switch controls the charging of the storage unit from the voltage at the input port.Type: GrantFiled: October 5, 2016Date of Patent: February 12, 2019Assignee: Dialog Semiconductor (UK) LimitedInventors: Horst Knoedgen, Julian Tyrrell
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Publication number: 20190044478Abstract: Relax oscillation circuits have at least one comparison circuit that is structured with a flipped gate transistor and a normal MOS transistor wherein the two transistors having different threshold voltages. The relaxation oscillators are configured for charging and discharging capacitances between the threshold voltages of the flipped gate transistor and the normal MOS transistor by toggling the state of a latching circuit to control the charging and discharging of the capacitances.Type: ApplicationFiled: August 4, 2017Publication date: February 7, 2019Inventors: Daisuke Kobayashi, Julian Tyrrell
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Patent number: 10149354Abstract: A controller for a power converter to convert electrical power at an input voltage into electrical power at an output voltage and a method of operating such controller is presented. The controller for controlling a power converter has an input port to receive a voltage representative of the input voltage; an input voltage measuring unit to sample a measuring voltage and to determine a measurement value that is representative of the input voltage; a switch; and a diode connectable with a storage unit to provide a supply voltage for the controller during operation of the controller. The switch controls the charging of the storage unit from the voltage at the input port.Type: GrantFiled: October 5, 2016Date of Patent: December 4, 2018Assignee: Dialog Semiconductor (UK) LimitedInventors: Horst Knoedgen, Julian Tyrrell
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Publication number: 20180310374Abstract: A solid state lighting SSL assembly comprises an SSL device, a capacitor, a directional conducting device and a supply switch. The capacitor is coupled in parallel with the SSL device. The directional conducting device is coupled between an output terminal of the capacitor and a supply terminal which provides a supply voltage for the SSL assembly. The directional conducting device is configured to conduct in a direction from the output terminal to the supply terminal and to isolate in the opposite direction. The supply switch is coupled between the output terminal and ground. In addition, a method for operating a solid state lighting SSL assembly is proposed.Type: ApplicationFiled: June 25, 2018Publication date: October 25, 2018Inventors: Kaiwen He, Horst Knoedgen, Baorong Chen, Julian Tyrrell
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Publication number: 20180159545Abstract: An apparatus and method for controlling an oscillating device is presented. In particular, a controller for adjusting the frequency of a drive signal driving a haptic actuator is presented. The controller contains a calculator adapted to receive a first and a second measurement of the electrical parameter and to calculate a difference between the first measurement and the second measurement. The first measurement is obtained at a first sampling time and the second measurement is obtained at a second sampling time. The controller is adapted to provide a control signal to adjust a frequency of the drive signal based on the difference.Type: ApplicationFiled: March 21, 2017Publication date: June 7, 2018Inventors: David Eke, Vladislav Vasilev, David Tyndall, Julian Tyrrell
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Publication number: 20170187200Abstract: A method and circuit that allows a charger port to source a slow charging voltage and current for one type of portable device and an adjustable voltage and current for a second type of portable device. The second type of portable device communicates with the charger port to establish a voltage and current that the portable device is capable of accepting. The portable device communicates with a charger port by load modulation structured for establishing a communications protocol for communicating a voltage and current level acceptable to the portable device.Type: ApplicationFiled: December 28, 2015Publication date: June 29, 2017Inventors: Alan Somerville, Julian Tyrrell
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Patent number: 9693417Abstract: Measurement circuits which are configured to measure wide ranges of the input voltage using a sensed input voltage of the driver circuits for solid state lighting (SSL) devices are presented. The measurement circuit comprises a first resistor which is coupled at a first side to the input voltage. The measurement circuit comprises current mirror circuitry coupled at an input to a second side of the first resistor, and which translates an input current at the input of the current mirror circuitry into an output current at an output of the current mirror circuitry, such that the output current is proportional to the input current by a current mirror ratio. The measurement circuit comprises a second resistor coupled to the output of the current mirror circuitry and to provide the sensed input voltage, when the input voltage is coupled to the first side of the first resistor.Type: GrantFiled: January 14, 2015Date of Patent: June 27, 2017Assignee: Dialog Semiconductor (UK) LimitedInventors: Horst Knoedgen, Julian Tyrrell, Hidenori Kobayashi
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Publication number: 20170156184Abstract: This application relates to a controller for a power converter to convert electrical power at an input voltage into electrical power at an output voltage and a method of operating such controller. The controller for controlling a power converter has an input port to receive a voltage representative of the input voltage; an input voltage measuring unit to sample a measuring voltage and to determine a measurement value that is representative of the input voltage; a switch; and a diode connectable with a storage unit to provide a supply voltage for the controller during operation of the controller. The switch controls the charging of the storage unit from the voltage at the input port.Type: ApplicationFiled: October 5, 2016Publication date: June 1, 2017Inventors: Horst Knoedgen, Julian Tyrrell