Patents by Inventor Vincenzo Bisogno
Vincenzo Bisogno 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: 20240103049Abstract: This disclosure is directed towards systems and methods that may prevent backpowering of a voltage source during a current monitoring operation. In a first example circuit, a switch may be used to mitigate an offset voltage of an operational amplifier. In a second and third example, a resistor may be used to generate an opposing voltage to the offset voltage to mitigate the offset voltage of the operational amplifier. Other examples are described that may mitigate sensing dead zones of some of the solutions and/or that may mitigate temperature variations changing an effectiveness of the mitigation.Type: ApplicationFiled: January 26, 2023Publication date: March 28, 2024Inventors: Deepesh H Kamani, Michael P Wigley, Ramakrishna Ravi, Vincenzo Bisogno
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Publication number: 20240069621Abstract: A power delivery system included in a computer system using multiple power converter circuits to generate respective voltage levels on multiple power supply nodes. The power delivery system includes a step-down power converter circuit that generates a voltage level for use by host and follower power converter circuits. The host power converter circuit generates an external demand current that is shared by multiple follower power converter circuits to regulate the voltage level on the multiple power supply nodes. The power delivery system can be scaled to different platforms of the computer system by adjusting the number of follower power converter circuits.Type: ApplicationFiled: August 31, 2022Publication date: February 29, 2024Inventors: Shawn Searles, Sanjay Pant, Ludmil N. Nikolov, Tiago Filipe Galhoz Patrao, Enrico Zanetti, Hao Zhou, Vincenzo Bisogno
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Publication number: 20240063716Abstract: A power converter circuit that includes two flying capacitors, is coupled to a regulated power supply node in a computer system. The power converter circuit magnetizes an inductor using the two flying capacitors during a first phase. During a second phase, the power converter circuit charges one of the flying capacitors, de-magnetizes the inductor, and transfers charge to the regulated power supply node. The power converter circuit magnetizes the inductor using the flying capacitors, and transfers charge to the regulated power supply node during a third phase. During a fourth phase, the power converter circuit again de-magnetizes the inductor, charges the one of the flying capacitors, and transfers charge to the regulated power supply node.Type: ApplicationFiled: August 17, 2022Publication date: February 22, 2024Inventors: Louis De Marco, Vincenzo Bisogno
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Publication number: 20230369972Abstract: A power management circuit included in a computer system regulates a voltage level of a power supply node used by other circuits in the computer system. The power management circuit includes a control circuit and multiple phase circuits coupled to the regulated power supply node via corresponding inductors. The control circuit selectively activates particular ones of the multiple phase circuits allowing them source respective currents to the regulated power supply node. The control circuit also selectively activates particular ones of other phase circuits that are external to the power management circuit and coupled to the regulated power supply node via their own corresponding inductors. Once activated, the external phase circuits source respective currents to the regulated power supply node via their corresponding inductors.Type: ApplicationFiled: May 15, 2023Publication date: November 16, 2023Inventors: Hao Zhou, Sarfraz Shaikh, Jay B. Fletcher, Sanjay Pant, Mark A. Yoshimoto, Vincenzo Bisogno, Shawn Searles
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Patent number: 11695336Abstract: A power management circuit included in a computer system regulates a voltage level of a power supply node used by other circuits in the computer system. The power management circuit includes a control circuit and multiple phase circuits coupled to the regulated power supply node via corresponding inductors. The control circuit selectively activates particular ones of the multiple phase circuits allowing them source respective currents to the regulated power supply node. The control circuit also selectively activates particular ones of other phase circuits that are external to the power management circuit and coupled to the regulated power supply node via their own corresponding inductors. Once activated, the external phase circuits source respective currents to the regulated power supply node via their corresponding inductors.Type: GrantFiled: June 9, 2021Date of Patent: July 4, 2023Assignee: Apple Inc.Inventors: Hao Zhou, Sarfraz Shaikh, Jay B. Fletcher, Sanjay Pant, Mark A. Yoshimoto, Vincenzo Bisogno, Shawn Searles
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Publication number: 20230155504Abstract: A power converter circuit included in a computer system that regulated a power supply voltage used by other circuits in the computer system. The power converter includes a primary control circuit that selectively activates multiple phase circuits coupled to respective driver circuits, which are coupled to a power supply node via respective inductors. Some of the driver circuits are located on a separate integrated circuit from the primary control circuit and the multiple phase circuits.Type: ApplicationFiled: January 19, 2023Publication date: May 18, 2023Inventors: Debashish Mahapatra, Vincenzo Bisogno, Francesco Griseta, Sarfraz Shaikh
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Publication number: 20230095471Abstract: A reconfigurable multi-phase power converter is disclosed. An apparatus comprises a first primary power converter configured to generate a first regulated supply voltage to a first regulated supply voltage node and a second primary power converter configured to generate a second regulated supply voltage to a second regulated supply voltage node. The apparatus further includes N secondary power converters, wherein N is an integer value of one or more, and a multiplexer circuit configured to select the at least one of the N secondary power converters to provide an output current to one of the first or second regulated supply voltage nodes.Type: ApplicationFiled: September 24, 2021Publication date: March 30, 2023Inventors: Sarfraz Shaikh, Carlos Andre Faria Calisto, Deepesh H. Kamani, Vincenzo Bisogno
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Patent number: 11581809Abstract: A power converter circuit included in a computer system that regulated a power supply voltage used by other circuits in the computer system. The power converter includes a primary control circuit that selectively activates multiple phase circuits coupled to respective driver circuits, which are coupled to a power supply node via respective inductors. Some of the driver circuits are located on a separate integrated circuit from the primary control circuit and the multiple phase circuits.Type: GrantFiled: June 9, 2021Date of Patent: February 14, 2023Assignee: Apple Inc.Inventors: Debashish Mahapatra, Vincenzo Bisogno, Francesco Griseta, Sarfraz Shaikh
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Publication number: 20220399811Abstract: A power converter circuit included in a computer system that regulated a power supply voltage used by other circuits in the computer system. The power converter includes a primary control circuit that selectively activates multiple phase circuits coupled to respective driver circuits, which are coupled to a power supply node via respective inductors. Some of the driver circuits are located on a separate integrated circuit from the primary control circuit and the multiple phase circuits.Type: ApplicationFiled: June 9, 2021Publication date: December 15, 2022Inventors: Debashish Mahapatra, Vincenzo Bisogno, Francesco Griseta, Sarfraz Shaikh
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Publication number: 20220399810Abstract: A power management circuit included in a computer system regulates a voltage level of a power supply node used by other circuits in the computer system. The power management circuit includes a control circuit and multiple phase circuits coupled to the regulated power supply node via corresponding inductors. The control circuit selectively activates particular ones of the multiple phase circuits allowing them source respective currents to the regulated power supply node. The control circuit also selectively activates particular ones of other phase circuits that are external to the power management circuit and coupled to the regulated power supply node via their own corresponding inductors. Once activated, the external phase circuits source respective currents to the regulated power supply node via their corresponding inductors.Type: ApplicationFiled: June 9, 2021Publication date: December 15, 2022Inventors: Hao Zhou, Sarfraz Shaikh, Jay B. Fletcher, Sanjay Pant, Mark A. Yoshimoto, Vincenzo Bisogno, Shawn Searles
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Patent number: 10811970Abstract: An object of this disclosure is to implement a Buck, Boost, or other switching converter, with a circuit to supply a reference voltage and Adaptive Voltage Positioning (AVP), by means of a servo and programmable load regulation. The reference voltage is modified, achieving a high DC gain, using a servo to remove any DC offset at the output of the switching converter. The correction implemented by the servo is measured, and a programmable fraction of the correction is injected back on either the reference voltage or the output feedback voltage. To accomplish at least one of these objects, a Buck, Boost, or other switching converter is implemented, consisting of an output stage driven by switching logic, with a servo configured between the reference voltage and the control loops of the Buck converter. The AVP function is implemented on either the reference voltage or output feedback voltage.Type: GrantFiled: October 21, 2019Date of Patent: October 20, 2020Assignee: Dialog Semiconductor (UK) LimitedInventors: Pietro Gallina, Vincenzo Bisogno, Mark Childs
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Publication number: 20200052591Abstract: An object of this disclosure is to implement a Buck, Boost, or other switching converter, with a circuit to supply a reference voltage and Adaptive Voltage Positioning (AVP), by means of a servo and programmable load regulation. The reference voltage is modified, achieving a high DC gain, using a servo to remove any DC offset at the output of the switching converter. The correction implemented by the servo is measured, and a programmable fraction of the correction is injected back on either the reference voltage or the output feedback voltage. To accomplish at least one of these objects, a Buck, Boost, or other switching converter is implemented, consisting of an output stage driven by switching logic, with a servo configured between the reference voltage and the control loops of the Buck converter. The AVP function is implemented on either the reference voltage or output feedback voltage.Type: ApplicationFiled: October 21, 2019Publication date: February 13, 2020Inventors: Pietro Gallina, Vincenzo Bisogno, Mark Childs
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Patent number: 10505450Abstract: A servo block in a Buck, Boost, or switching converter allows a positive offset to be applied to the DAC voltage. In a typical switching converter application, the load will have a positive current, sourced from the switching converter to ground through the load. This will cause the output voltage of the switching converter to fall with the output impedance. The servo block corrects the output voltage by adjusting the DAC voltage upwards. In the case where current is forced back into the switching converter, causing the output voltage to rise, the servo block will have affect. The behavior of the servo block is desirable as it reduces the negative affect the servo block may have on load transients occurring when the switching converter is in over voltage. In particular, the idea of shifting the DAC voltage for several different loops with a single servo block is disclosed.Type: GrantFiled: October 11, 2018Date of Patent: December 10, 2019Assignee: Dialog Semiconductor (UK) LimitedInventors: Mark Childs, Pietro Gallina, Vincenzo Bisogno
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Patent number: 10468984Abstract: An object of this disclosure is to implement a Buck, Boost, or other switching converter, with a circuit to supply a reference voltage and Adaptive Voltage Positioning (AVP), by a servo and programmable load regulation. The reference voltage is modified, achieving a high DC gain, using a servo to remove any DC offset at the output of the switching converter. The correction implemented by the servo is measured, and a programmable fraction of the correction is injected back on either the reference voltage or the output feedback voltage. To accomplish at least one of these objects, a Buck, Boost, or other switching converter is implemented, consisting of an output stage driven by switching logic, with a servo configured between the reference voltage and the control loops of the Buck converter. The AVP function is implemented on either the reference voltage or output feedback voltage.Type: GrantFiled: July 1, 2016Date of Patent: November 5, 2019Assignee: Dialog Semiconductor (UK) LimitedInventors: Pietro Gallina, Vincenzo Bisogno, Mark Childs
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Publication number: 20190044444Abstract: A servo block in a Buck, Boost, or switching converter allows a positive offset to be applied to the DAC voltage. In a typical switching converter application, the load will have a positive current, sourced from the switching converter to ground through the load. This will cause the output voltage of the switching converter to fall with the output impedance. The servo block corrects the output voltage by adjusting the DAC voltage upwards. In the case where current is forced back into the switching converter, causing the output voltage to rise, the servo block will have affect. The behavior of the servo block is desirable as it reduces the negative affect the servo block may have on load transients occurring when the switching converter is in over voltage. In particular, the idea of shifting the DAC voltage for several different loops with a single servo block is disclosed.Type: ApplicationFiled: October 11, 2018Publication date: February 7, 2019Inventors: Mark Childs, Pietro Gallina, Vincenzo Bisogno
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Patent number: 10116210Abstract: A servo block in a Buck, Boost, or switching converter allows a positive offset to be applied to the DAC voltage. In a typical switching converter application, the load will have a positive current, sourced from the switching converter to ground through the load. This will cause the output voltage of the switching converter to fall with the output impedance. The servo block corrects the output voltage by adjusting the DAC voltage upwards. In the case where current is forced back into the switching converter, causing the output voltage to rise, the servo block will have affect. The behavior of the servo block is desirable as it reduces the negative affect the servo block may have on load transients occurring when the switching converter is in over voltage. In particular, the idea of shifting the DAC voltage for several different loops with a single servo block is disclosed.Type: GrantFiled: September 4, 2015Date of Patent: October 30, 2018Assignee: Dialog Semiconductor (UK) LimitedInventors: Mark Childs, Pietro Gallina, Vincenzo Bisogno
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Patent number: 9972998Abstract: Buck converters with self-protection against short circuit at the buck converter outputs and intrinsic soft start-up circuitry are disclosed. The methods and circuits disclosed are applicable for PFM and PWM modulated converters. The methods disclosed are also applicable for boost converters against shorts between boosted voltage and supply voltage.Type: GrantFiled: June 8, 2015Date of Patent: May 15, 2018Assignee: Dialog Semiconductor (UK) LimitedInventor: Vincenzo Bisogno
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Publication number: 20180006558Abstract: An object of this disclosure is to implement a Buck, Boost, or other switching converter, with a circuit to supply a reference voltage and Adaptive Voltage Positioning (AVP), by means of a servo and programmable load regulation. The reference voltage is modified, achieving a high DC gain, using a servo to remove any DC offset at the output of the switching converter. The correction implemented by the servo is measured, and a programmable fraction of the correction is injected back on either the reference voltage or the output feedback voltage. To accomplish at least one of these objects, a Buck, Boost, or other switching converter is implemented, consisting of an output stage driven by switching logic, with a servo configured between the reference voltage and the control loops of the Buck converter. The AVP function is implemented on either the reference voltage or output feedback voltage.Type: ApplicationFiled: July 1, 2016Publication date: January 4, 2018Inventors: Pietro Gallina, Vincenzo Bisogno, Mark Childs
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Publication number: 20170070146Abstract: A servo block in a Buck, Boost, or switching converter allows a positive offset to be applied to the DAC voltage. In a typical switching converter application, the load will have a positive current, sourced from the switching converter to ground through the load. This will cause the output voltage of the switching converter to fall with the output impedance. The servo block corrects the output voltage by adjusting the DAC voltage upwards. In the case where current is forced back into the switching converter, causing the output voltage to rise, the servo block will have affect. The behavior of the servo block is desirable as it reduces the negative affect the servo block may have on load transients occurring when the switching converter is in over voltage. In particular, the idea of shifting the DAC voltage for several different loops with a single servo block is disclosed.Type: ApplicationFiled: September 4, 2015Publication date: March 9, 2017Inventors: Mark Childs, Pietro Gallina, Vincenzo Bisogno
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Publication number: 20160359320Abstract: Buck converters with self-protection against short circuit at the buck converter outputs and intrinsic soft start-up circuitry are disclosed. The methods and circuits disclosed are applicable for PFM and PWM modulated converters. The methods disclosed are also applicable for boost converters against shorts between boosted voltage and supply voltage.Type: ApplicationFiled: June 8, 2015Publication date: December 8, 2016Inventor: Vincenzo Bisogno