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公开(公告)号：US11481015B2
公开(公告)日：2022-10-25
申请号：US16452012
申请日：2019-06-25
Applicant: NXP B.V.
Inventor： Siamak Delshadpour , Abhijeet Chandrakant Kulkarni , Hans de Kuyper , Cornelis Johannes Speelman
IPC: G06F1/3234 , G06F1/3206 , H04L25/02 , H04L25/03
Abstract: A redriver chip includes a controller and a plurality of circuits coupled to the channel. The controller adjusts a set of parameters of the plurality of circuits to have first values during a first mode of operation and second values during a second mode of operation. The first values generate a first level of power consumption during the first mode of operation, and the second values generate a second level of power consumption during the second mode of operation. The first level of power consumption is lower than the second level of power consumption, and the first mode of operation corresponding to a low-power mode of the redriver chip.
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公开(公告)号：US10114782B2
公开(公告)日：2018-10-30
申请号：US15277677
申请日：2016-09-27
Applicant: NXP B.V.
Inventor： Abhijeet Chandrakant Kulkarni , Kenneth Jaramillo
Abstract: A universal serial bus (USB) circuit includes a USB interface configured to transmit and receive power and data, a random number generator circuit configured to generate a random number, and a controller configured to receive the random number and to select a dual role port (DRP) duty cycle and to select a DRP duration based upon the random number, wherein the DRP duty cycle time and DRP duration are used when connecting a USB type-C DRP device to another USB type-C DRP device.
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公开(公告)号：US11688981B2
公开(公告)日：2023-06-27
申请号：US16293804
申请日：2019-03-06
Applicant: NXP B.V.
Inventor： Abhijeet Chandrakant Kulkarni , Krishnan Tiruchi Natarajan , Siamak Delshadpour , Ronald Dean Smith , Allen Yu-feng Tung , Hans de Kuyper , Amrita Deshpande , Sivakumar Reddy Papadasu
CPC classification number: H01R13/6683 , G06F13/4022 , H01R13/64 , H01R13/6691
Abstract: A redriver includes a plurality of channels coupled to an interface, a number of detectors coupled to the plurality of channels, and a controller that determines an orientation of the interface based on states detected by the number of detectors. The controller determines that the interface is in a first orientation when a first combination of states is detected for the plurality of channels, and determines that the interface is in a second orientation when a second combination of states is detected for the plurality of channels.
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公开(公告)号：US10417158B1
公开(公告)日：2019-09-17
申请号：US16183729
申请日：2018-11-07
Applicant: NXP B.V.
Inventor： Anu Mathew , Abhijeet Chandrakant Kulkarni , Siamak Delshadpour
Abstract: A circuit for detecting charger connection through a universal serial bus (UBS) connector is disclosed. The circuit includes a comparator having a first input coupled to a fixed voltage reference and a second input coupled to D+ pin of the USB connector, a voltage controlled current source (VCCS) coupled having a first terminal coupled to a supply and a second terminal coupled to the D+ pin and a resistor coupled between the first terminal and the second terminal of the VCCS. The VCCS is configured to bring voltage at the D+ pin within a preselected voltage range at the D+ pin when the voltage at the D+ pin varies beyond the preselected voltage range.
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公开(公告)号：US10088884B2
公开(公告)日：2018-10-02
申请号：US14921276
申请日：2015-10-23
Applicant: NXP B.V.
Inventor： Kenneth Jaramillo , Madan Mohan Reddy Vemula , Sharad Murari , Abhijeet Chandrakant Kulkarni , Krishnan Tiruchi Natarajan
Abstract: A protocol can specifie a power-sourcing voltage range that indicates power sourcing capabilities. Additional power sourcing capabilities can be communicated using voltage variations within the power-sourcing voltage range. A power-sourcing device can provide power to an external power-sinking device over a wired connection containing a plurality of wires. A voltage control circuit can be configured to drive a voltage over a wire of the plurality of wires. Processing circuitry can communicate, using the voltage control circuit, first power-sourcing capabilities to the external power-sinking device by setting the voltage over the wire to a value within the power-sourcing voltage range. The processing circuitry can also communicate, using the voltage control circuit, the additional power sourcing capabilities of the power-sourcing device using voltage variations on the wire, the voltage variations maintaining voltage on the wire within the power-sourcing voltage range.
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Patent Agency Ranking
公开(公告)号：US20170115711A1
公开(公告)日：2017-04-27
申请号：US14921276
申请日：2015-10-23
Applicant: NXP B.V.
Inventor： Kenneth Jaramillo , Madan Mohan Reddy Vemula , Sharad Murari , Abhijeet Chandrakant Kulkarni , Krishnan Tiruchi Natarajan
CPC classification number: G06F1/266 , G06F13/102 , G06F13/4282 , G06F2213/0042 , H04L12/10 , H04L12/40045
Abstract: A protocol can specifie a power-sourcing voltage range that indicates power sourcing capabilities. Additional power sourcing capabilities can be communicated using voltage variations within the power-sourcing voltage range. A power-sourcing device can provide power to an external power-sinking device over a wired connection containing a plurality of wires. A voltage control circuit can be configured to drive a voltage over a wire of the plurality of wires. Processing circuitry can communicate, using the voltage control circuit, first power-sourcing capabilities to the external power-sinking device by setting the voltage over the wire to a value within the power-sourcing voltage range. The processing circuitry can also communicate, using the voltage control circuit, the additional power sourcing capabilities of the power-sourcing device using voltage variations on the wire, the voltage variations maintaining voltage on the wire within the power-sourcing voltage range.
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公开(公告)号：US10003192B2
公开(公告)日：2018-06-19
申请号：US14868044
申请日：2015-09-28
Applicant: NXP B.V.
Inventor： Xueyang Geng , Ahmad Yazdi , Siamak Delshadpour , Abhijeet Chandrakant Kulkarni
Abstract: A system including a device that is configured to communicate current sourcing capabilities to an external power source over a wired connection containing a plurality of wires. The device includes a power supply circuit configured to provide operating power for the device. A first pull-down circuit is configured to provide a pull-down for a particular wire of the wired connection using a first resistive element that is actively trimmed using the operating power. A second pull-down circuit includes at least one transistor that, in the absence of the operating power, is configured to enable a current path, in response to a gate voltage generated from a voltage on the particular wire, between the particular wire and a second resistive element.
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公开(公告)号：US09998276B2
公开(公告)日：2018-06-12
申请号：US15277707
申请日：2016-09-27
Applicant: NXP B.V.
Inventor： Abhijeet Chandrakant Kulkarni , Kenneth Jaramillo , Siamak Delshadpour
CPC classification number: H04L7/033 , G06F1/3253 , H04L12/10
Abstract: Disclosed is a method of controlling a USB Power Delivery System including determining whether at least a predetermined length of initial bits of a message is received, turning on a clock when the predetermined length is received, determining whether the message has stopped, starting a counter when the message has stopped, determining whether a count value of the counter has reached a predetermined value, and turning off the clock when the predetermined count value has been reached.
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公开(公告)号：US20170192446A1
公开(公告)日：2017-07-06
申请号：US14989378
申请日：2016-01-06
Applicant: NXP B.V.
Inventor： Chiahung Su , Madan Mohan Reddy Vemula , Abhijeet Chandrakant Kulkarni , Kenneth Jaramillo
CPC classification number: G05F3/02 , G06F1/266 , G06F1/3253 , H02J4/00 , H04L12/10 , H04L43/08 , H04L43/16 , Y02D10/151 , Y02D50/20 , Y04S40/168
Abstract: Low power solutions can be provided in a serial bus system with a logic controller circuit. The logic controller circuit can include analog circuitry that includes a plurality of analog components and trimming circuitry for configuring the analog components. Digital circuitry can be configured to switch between an active mode and a hibernation mode, wherein the hibernation mode consumes less current than the active mode. A voltage regulator circuit can be configured to generate a regulated voltage from a supply voltage. A reset generation circuit can be configured to determine that the supply voltage has reached a first threshold voltage level and enable the voltage regulator circuit. When the regulated voltage has reached a second threshold voltage level and the supply voltage has reached a third threshold voltage level, the digital circuitry can be switched to the active mode.
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公开(公告)号：US20170093154A1
公开(公告)日：2017-03-30
申请号：US14868044
申请日：2015-09-28
Applicant: NXP B.V.
Inventor： Xueyang Geng , Ahmad Yazdi , Siamak Delshadpour , Abhijeet Chandrakant Kulkarni
Abstract: A system including a device that is configured to communicate current sourcing capabilities to an external power source over a wired connection containing a plurality of wires. The device includes a power supply circuit configured to provide operating power for the device. A first pull-down circuit is configured to provide a pull-down for a particular wire of the wired connection using a first resistive element that is actively trimmed using the operating power. A second pull-down circuit includes at least one transistor that, in the absence of the operating power, is configured to enable a current path, in response to a gate voltage generated from a voltage on the particular wire, between the particular wire and a second resistive element.
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