Patents by Inventor Mustapha El-Markhi
Mustapha El-Markhi 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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Publication number: 20230275442Abstract: Aspects of the disclosure provide for a circuit. In at least some examples, the circuit includes a logic circuit, a first comparator, a second comparator, and an AND logic circuit. The logic circuit has an output and the first comparator has a first input coupled to an input voltage (VIN) pin, a second input configured to receive a Vin under voltage lockout (VINUVLO) threshold value, and an output. The second comparator has a first input coupled to a power middle (PMID) pin, a second input coupled to a battery pin, and an output and the AND logic circuit has a first input coupled to the output of the logic circuit, a second input coupled to the output of the first comparator, a third input coupled to the output of the second comparator, and an output coupled to an input of a field-effect transistor (FET) control circuit.Type: ApplicationFiled: May 8, 2023Publication date: August 31, 2023Inventors: Mustapha EL MARKHI, Alejandro VERA, Tonmoy ROY, Rohit BHAN
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Patent number: 11695283Abstract: Aspects of the disclosure provide for a circuit. In at least some examples, the circuit includes a logic circuit, a first comparator, a second comparator, and an AND logic circuit. The logic circuit has an output and the first comparator has a first input coupled to an input voltage (VIN) pin, a second input configured to receive a Vin under voltage lockout (VINUVLO) threshold value, and an output. The second comparator has a first input coupled to a power middle (PMID) pin, a second input coupled to a battery pin, and an output and the AND logic circuit has a first input coupled to the output of the logic circuit, a second input coupled to the output of the first comparator, a third input coupled to the output of the second comparator, and an output coupled to an input of a field-effect transistor (FET) control circuit.Type: GrantFiled: February 15, 2019Date of Patent: July 4, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Mustapha El Markhi, Alejandro Vera, Tonmoy Roy, Rohit Bhan
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Patent number: 11646594Abstract: An example device comprises a digital-to-analog converter (DAC) comprising first and second transistors coupled to a first amplifier, the second transistor coupled to a first output of the DAC and to an output of the first amplifier, and third and fourth transistors coupled to the first amplifier and to a second output of the DAC, the third and fourth transistors switchably coupled to a voltage supply and to the first transistor. The device also comprises a first node coupled to the first output of the DAC and to a resistor. The device further includes a second node coupled to the second output of the DAC, and a second amplifier coupled to the second node and to the first transistor and switchably coupled to the third and fourth transistors. The device also comprises a comparator coupled to the first node.Type: GrantFiled: January 25, 2021Date of Patent: May 9, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Mustapha El Markhi, Erhan Ozalevli, Tuli Dake, Rohit Bhan
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Publication number: 20220115889Abstract: A battery charger includes a battery power regulator configured to set a charge signal provided to a battery based on a charge control signal and charge enable signal. The battery charger also includes a controller configured to provide the charge control signal to the battery power regulator. The controller is also configured to temporarily de-assert the charge enable signal for a predetermined amount of time in response to determining that a change is needed in the charge control signal. The controller is further configured to re-assert the charge enable signal after the predetermined amount of time.Type: ApplicationFiled: December 21, 2021Publication date: April 14, 2022Inventors: Mustapha El Markhi, Alejandro Vera, Rohit Bhan
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Patent number: 11283361Abstract: A wireless power transfer system using a resonant rectifier circuit with capacitor sensing. A wireless power transfer system includes a power receiver resonant circuit and a synchronous rectifier. The power receiver resonant circuit includes an inductor and a capacitor connected in series with the inductor. The synchronous rectifier is configured to identify zero crossings of alternating current flowing through the inductor based on voltage across the capacitor, and control synchronous rectification of the alternating current based on timing of the zero crossings.Type: GrantFiled: August 28, 2019Date of Patent: March 22, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Mustapha El Markhi, Erhan Ozalevli, Tuli Dake, Dingkun Du, Gianpaolo Lisi, Jingwei Xu
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Patent number: 11239680Abstract: A battery charger includes a battery power regulator configured to set a charge signal provided to a battery based on a charge control signal and charge enable signal. The battery charger also includes a controller configured to provide the charge control signal to the battery power regulator. The controller is also configured to temporarily de-assert the charge enable signal for a predetermined amount of time in response to determining that a change is needed in the charge control signal. The controller is further configured to re-assert the charge enable signal after the predetermined amount of time.Type: GrantFiled: March 15, 2019Date of Patent: February 1, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Mustapha El Markhi, Alejandro Vera, Rohit Bhan
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Patent number: 11196281Abstract: Aspects of the present disclosure provide for circuit. In at least some examples, the circuit includes a controller, a current source, a switch, and a digital-to-analog converter (DAC). The controller includes an analog-to-digital converter (ADC) having an input and an output, a first register, and a second register coupled to the output of the ADC. The switch is coupled between an output of the current source and a first node and has a control terminal coupled to the controller. The first node is coupled to the input of the ADC and is configured to couple to a resistor. The DAC has an input coupled to the controller and an output configured to couple to a battery.Type: GrantFiled: March 29, 2019Date of Patent: December 7, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Mustapha El Markhi, Rohit Bhan, Thomas Vermeer, Daniel Mavencamp
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Patent number: 11119557Abstract: A system includes an adapter port and a control circuit coupled to the adapter port. The system also includes host hardware coupled to the control circuit. The control circuit is configured to reset the host hardware in response to detecting an adapter removal pattern at the adapter port.Type: GrantFiled: January 29, 2019Date of Patent: September 14, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Mustapha El Markhi, Rohit Bhan, Thomas Vermeer, Norelis Medina
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Patent number: 11114876Abstract: A battery charger circuit associated with a portable electronic device is disclosed. The battery charger circuit comprises a charging circuit configured to charge a battery and a discharging circuit configured to discharge the battery. The battery charger circuit further comprises a battery fault detection circuit configured to detect a battery fault condition, based on monitoring one or more battery parameters. In some aspects, the battery charger circuit further comprises a battery charge control circuit configured to selectively activate the discharging circuit, in order to discharge the battery, and deactivate the charging circuit, in order to suspend charging the battery during the discharge of the battery, when the battery fault condition is detected.Type: GrantFiled: September 4, 2019Date of Patent: September 7, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Gautham Ramachandran, Mustapha El Markhi
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Patent number: 11101807Abstract: One example includes a phase-locked loop (PLL) circuit. The circuit includes a frequency divider and phase detector configured to generate a plurality of non-overlapping switching signals based on an input signal and a PLL output signal. The circuit also includes a linear frequency-to-current (F2I) converter configured to generate a control current having an amplitude that is based on the plurality of non-overlapping switching signals. The circuit further includes a linear current-controlled oscillator configured to generate the PLL output signal to have a frequency and phase to be approximately equal to the input signal based on the amplitude of the control current.Type: GrantFiled: December 11, 2018Date of Patent: August 24, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Erhan Ozalevli, Mustapha El Markhi, Tuli Dake
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Publication number: 20210143833Abstract: An example device comprises a digital-to-analog converter (DAC) comprising first and second transistors coupled to a first amplifier, the second transistor coupled to a first output of the DAC and to an output of the first amplifier, and third and fourth transistors coupled to the first amplifier and to a second output of the DAC, the third and fourth transistors switchably coupled to a voltage supply and to the first transistor. The device also comprises a first node coupled to the first output of the DAC and to a resistor. The device further includes a second node coupled to the second output of the DAC, and a second amplifier coupled to the second node and to the first transistor and switchably coupled to the third and fourth transistors. The device also comprises a comparator coupled to the first node.Type: ApplicationFiled: January 25, 2021Publication date: May 13, 2021Inventors: Mustapha EL MARKHI, Erhan OZALEVLI, Tuli DAKE, Rohit BHAN
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Patent number: 10938403Abstract: An example device comprises a digital-to-analog converter (DAC) comprising first and second transistors coupled to a first amplifier, the second transistor coupled to a first output of the DAC and to an output of the first amplifier, and third and fourth transistors coupled to the first amplifier and to a second output of the DAC, the third and fourth transistors switchably coupled to a voltage supply and to the first transistor. The device also comprises a first node coupled to the first output of the DAC and to a resistor. The device further includes a second node coupled to the second output of the DAC, and a second amplifier coupled to the second node and to the first transistor and switchably coupled to the third and fourth transistors. The device also comprises a comparator coupled to the first node.Type: GrantFiled: November 14, 2018Date of Patent: March 2, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Mustapha El Markhi, Erhan Ozalevli, Tuli Dake, Rohit Bhan
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Publication number: 20200313444Abstract: Aspects of the present disclosure provide for circuit. In at least some examples, the circuit includes a controller, a current source, a switch, and a digital-to-analog converter (DAC). The controller includes an analog-to-digital converter (ADC) having an input and an output, a first register, and a second register coupled to the output of the ADC. The switch is coupled between an output of the current source and a first node and has a control terminal coupled to the controller. The first node is coupled to the input of the ADC and is configured to couple to a resistor. The DAC has an input coupled to the controller and an output configured to couple to a battery.Type: ApplicationFiled: March 29, 2019Publication date: October 1, 2020Inventors: Mustapha EL MARKHI, Rohit BHAN, Thomas VERMEER, Daniel MAVENCAMP
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Publication number: 20200266647Abstract: A battery charger circuit associated with a portable electronic device is disclosed. The battery charger circuit comprises a charging circuit configured to charge a battery and a discharging circuit configured to discharge the battery. The battery charger circuit further comprises a battery fault detection circuit configured to detect a battery fault condition, based on monitoring one or more battery parameters. In some aspects, the battery charger circuit further comprises a battery charge control circuit configured to selectively activate the discharging circuit, in order to discharge the battery, and deactivate the charging circuit, in order to suspend charging the battery during the discharge of the battery, when the battery fault condition is detected.Type: ApplicationFiled: September 4, 2019Publication date: August 20, 2020Inventors: Gautham Ramachandran, Mustapha El Markhi
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Publication number: 20200241620Abstract: A system includes an adapter port and a control circuit coupled to the adapter port. The system also includes host hardware coupled to the control circuit. The control circuit is configured to reset the host hardware in response to detecting an adapter removal pattern at the adapter port.Type: ApplicationFiled: January 29, 2019Publication date: July 30, 2020Inventors: Mustapha EL MARKHI, Rohit BHAN, Thomas VERMEER, Norelis MEDINA
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Patent number: 10644581Abstract: In a described example, an apparatus includes: transistor having a first terminal coupled to an input terminal, a second terminal coupled to an output terminal, and a gate terminal; a temperature sensor configured to sense a junction temperature of the transistor and generate a temperature signal based on the sensed junction temperature; and a gate driver circuit configured to generate a gate signal based on the temperature signal and to output the gate signal to the gate terminal of the transistor.Type: GrantFiled: November 1, 2017Date of Patent: May 5, 2020Assignee: Texas Instruments IncorporatedInventors: Mustapha El Markhi, Erhan Ozalevli, Tuli Dake
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Publication number: 20200007145Abstract: An example device comprises a digital-to-analog converter (DAC) comprising first and second transistors coupled to a first amplifier, the second transistor coupled to a first output of the DAC and to an output of the first amplifier, and third and fourth transistors coupled to the first amplifier and to a second output of the DAC, the third and fourth transistors switchably coupled to a voltage supply and to the first transistor. The device also comprises a first node coupled to the first output of the DAC and to a resistor. The device further includes a second node coupled to the second output of the DAC, and a second amplifier coupled to the second node and to the first transistor and switchably coupled to the third and fourth transistors. The device also comprises a comparator coupled to the first node.Type: ApplicationFiled: November 14, 2018Publication date: January 2, 2020Inventors: Mustapha EL MARKHI, Erhan OZALEVLI, Tuli DAKE, Rohit BHAN
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Publication number: 20190386575Abstract: A wireless power transfer system using a resonant rectifier circuit with capacitor sensing. A wireless power transfer system includes a power receiver resonant circuit and a synchronous rectifier. The power receiver resonant circuit includes an inductor and a capacitor connected in series with the inductor. The synchronous rectifier is configured to identify zero crossings of alternating current flowing through the inductor based on voltage across the capacitor, and control synchronous rectification of the alternating current based on timing of the zero crossings.Type: ApplicationFiled: August 28, 2019Publication date: December 19, 2019Inventors: Mustapha El Markhi, Erhan Ozalevli, Tuli Dake, Dingkun Du, Gianpaolo Lisi, Jingwei Xu
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Publication number: 20190372358Abstract: A battery charger includes a battery power regulator configured to set a charge signal provided to a battery based on a charge control signal and charge enable signal. The battery charger also includes a controller configured to provide the charge control signal to the battery power regulator. The controller is also configured to temporarily de-assert the charge enable signal for a predetermined amount of time in response to determining that a change is needed in the charge control signal. The controller is further configured to re-assert the charge enable signal after the predetermined amount of time.Type: ApplicationFiled: March 15, 2019Publication date: December 5, 2019Inventors: MUSTAPHA EL MARKHI, ALEJANDRO VERA, ROHIT BHAN
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Publication number: 20190348846Abstract: Aspects of the disclosure provide for a circuit. In at least some examples, the circuit includes a logic circuit, a first comparator, a second comparator, and an AND logic circuit. The logic circuit has an output and the first comparator has a first input coupled to an input voltage (VIN) pin, a second input configured to receive a Vin under voltage lockout (VINUVLO) threshold value, and an output. The second comparator has a first input coupled to a power middle (PMID) pin, a second input coupled to a battery pin, and an output and the AND logic circuit has a first input coupled to the output of the logic circuit, a second input coupled to the output of the first comparator, a third input coupled to the output of the second comparator, and an output coupled to an input of a field-effect transistor (FET) control circuit.Type: ApplicationFiled: February 15, 2019Publication date: November 14, 2019Inventors: Mustapha EL MARKHI, Alejandro VERA, Tonmoy ROY, Rohit BHAN