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公开(公告)号：US09787310B2
公开(公告)日：2017-10-10
申请号：US14574134
申请日：2014-12-17
Applicant: Silicon Laboratories Inc.
Inventor： Chao Yang , Praveen Kallam
IPC: H03L5/00 , H03K19/0185
CPC classification number: H03K19/018514 , H03K19/018528
Abstract: In some embodiments, a method may include receiving an input signal at an input stage of a circuit and amplifying the input signal using an amplifier of the circuit to produce a level-shifted output signal. The method may further include selectively controlling switches of an active load coupled to the input stage based on the level-shifted output signal to turn off current flow between transitions in the input signal.
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公开(公告)号：US20170187199A1
公开(公告)日：2017-06-29
申请号：US14979516
申请日：2015-12-28
Applicant: Silicon Laboratories Inc.
Inventor： Dazhi Wei , Praveen Kallam
IPC: H02J7/00
CPC classification number: H02J7/007 , H02J7/0052 , H02J7/0068
Abstract: An apparatus includes a voltage regulator to regulate a voltage from a power source and to provide an output current at an output. The apparatus further includes a battery charger, coupled to the voltage regulator, to provide a charge current. The apparatus further includes a controller to control the charge current such that the charge current is less than or equal to a current available from the power source minus the output current.
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3.发明申请公开(公告)号：US20170185094A1
公开(公告)日：2017-06-29
申请号：US14983420
申请日：2015-12-29
Applicant: Silicon Laboratories Inc.
Inventor： Nicholas M. Atkinson , Praveen Kallam , Timothy T. Rueger
CPC classification number: G05F1/59 , G06F1/26 , G06F1/263 , G06F1/3243 , H02J1/102 , H02J7/0052 , H02J7/0063 , H02J7/34
Abstract: An apparatus includes an integrated circuit (IC). The IC includes a power controller, which includes a regulator and a controller. The regulator receives a plurality of input voltages and provides a regulated output voltage. The controller controls the regulator to generate the regulated output voltage from the plurality of input voltages. The power controller provides power to a load integrated in the IC from a set of arbitrary input voltages. The set of arbitrary input voltages includes the plurality of input voltages.
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公开(公告)号：US10139896B2
公开(公告)日：2018-11-27
申请号：US14794779
申请日：2015-07-08
Applicant: Silicon Laboratories Inc.
Inventor： Praveen Kallam , Johnny Gudmund Bjornsen , Kenneth W. Fernald , Scott Willingham , Pavel Konecny
IPC: G06F1/32
Abstract: An apparatus includes a circuit that has a normal mode of operation and a low-power mode of operation. The circuit consumes more power in the normal mode of operation than in the low-power mode of operation. The apparatus further includes a power-supply circuit. The power-supply circuit provides a normal supply voltage to the circuit in the normal mode of operation. The power-supply circuit includes a non-linear circuit to provide a compressed supply voltage to the circuit in the low-power mode of operation, wherein the normal supply voltage is greater than the compressed supply voltage.
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公开(公告)号：US09966781B2
公开(公告)日：2018-05-08
申请号：US14979516
申请日：2015-12-28
Applicant: Silicon Laboratories Inc.
Inventor： Dazhi Wei , Praveen Kallam
CPC classification number: H02J7/007 , H02J7/0052 , H02J7/0068
Abstract: An apparatus includes a voltage regulator to regulate a voltage from a power source and to provide an output current at an output. The apparatus further includes a battery charger, coupled to the voltage regulator, to provide a charge current. The apparatus further includes a controller to control the charge current such that the charge current is less than or equal to a current available from the power source minus the output current.
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Patent Agency Ranking
公开(公告)号：US20170187218A1
公开(公告)日：2017-06-29
申请号：US14979514
申请日：2015-12-28
Applicant: Silicon Laboratories Inc.
Inventor： Axel Thomsen , Dazhi Wei , Steffen Skaug , Praveen Kallam
IPC: H02J7/00
CPC classification number: H02J7/0083 , H02J7/0047 , H02J7/0052 , H02J7/0077 , H02J7/045 , H02J7/047 , H02J2007/0059
Abstract: An apparatus includes a digital battery charger. The digital battery charger includes an analog-to-digital converter (ADC) to convert a terminal voltage of a battery to a first digital signal. The digital battery charger further includes a digital controller coupled to the ADC to receive the first digital signal and provide a set of control signals. The digital battery charger further includes a current digital-to-analog converter (IDAC) coupled to the digital controller to receive the set of control signals and to provide a battery charging current signal.
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公开(公告)号：US20170126005A1
公开(公告)日：2017-05-04
申请号：US14927810
申请日：2015-10-30
Applicant: Silicon Laboratories Inc.
Inventor： Mohamed Elsayed , Matthew Powell , Nicholas M. Atkinson , Praveen Kallam
IPC: H02J1/10 , H03K17/687
CPC classification number: H02J1/10 , G06F1/26 , G06F1/28 , G06F1/305 , H02J2001/008 , H03K19/0185
Abstract: Circuitry and methods are provided that may be implemented to transfer digital signals between multiple voltage domains while some of these domains may be invalid, e.g., such as to transfer a digital signal from a source voltage domain to a destination voltage domain while the voltage of the source domain is zero or invalid. Possible implementations include, but are not limited to, for power selection and distribution in an integrated circuit chip that has multiple power sources (e.g., such as main power supply and a backup power supply), and in which at startup the chip is agnostic of (or is not aware of) which power supply or power supplies is actually powered and available.
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公开(公告)号：US10063084B2
公开(公告)日：2018-08-28
申请号：US14979514
申请日：2015-12-28
Applicant: Silicon Laboratories Inc.
Inventor： Axel Thomsen , Dazhi Wei , Steffen Skaug , Praveen Kallam
IPC: H02J7/00
CPC classification number: H02J7/0083 , H02J7/0047 , H02J7/0052 , H02J7/0077 , H02J7/045 , H02J7/047 , H02J2007/0059
Abstract: An apparatus includes a digital battery charger. The digital battery charger includes an analog-to-digital converter (ADC) to convert a terminal voltage of a battery to a first digital signal. The digital battery charger further includes a digital controller coupled to the ADC to receive the first digital signal and provide a set of control signals. The digital battery charger further includes a current digital-to-analog converter (IDAC) coupled to the digital controller to receive the set of control signals and to provide a battery charging current signal.
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公开(公告)号：US09958888B2
公开(公告)日：2018-05-01
申请号：US14740386
申请日：2015-06-16
Applicant: Silicon Laboratories Inc.
Inventor： Dazhi Wei , Gang Yuan , Erik Pankratz , Imranul Islam , Praveen Kallam , Axel Thomsen , Kenneth Wilson Fernald , Jinwen Xiao
CPC classification number: G05F1/575 , G05F1/56 , H02M3/1588 , Y02B70/1466
Abstract: In one embodiment, an apparatus includes a controller to control a voltage regulator. The controller may have a first comparator circuit to compare a first reference voltage to a feedback voltage. In turn, the first comparator circuit may include: a first comparator having a first input terminal to receive the feedback voltage and a second input terminal to receive the reference voltage and an output node to output an error signal based on the comparison; and a first pre-charge circuit coupled between the first input terminal and the output node configured to pre-charge a first portion of a compensation network to a pre-charge level. The first controller may further include a second comparator circuit coupled to the first comparator circuit compare the error signal to a ramp signal and to generate a first control output to control a power train of the voltage regulator in a first mode of operation.
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公开(公告)号：US09866215B2
公开(公告)日：2018-01-09
申请号：US14870185
申请日：2015-09-30
Applicant: Silicon Laboratories Inc.
CPC classification number: H03K19/0016 , H03K5/06 , H03K5/2481
Abstract: In one embodiment, a voltage comparator circuit includes a first comparator circuit to compare a first voltage and a second voltage and a second comparator circuit to compare the first voltage and the second voltage. The voltage comparator circuit may include charge storage circuitry and positive feedback circuitry. Such circuitry may boost current within the first and second comparator circuits to enable the voltage comparator circuit to output a comparison decision within a delay threshold in response to input transitions within a slew rate threshold.
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