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公开(公告)号：US12210365B2
公开(公告)日：2025-01-28
申请号：US16848424
申请日：2020-04-14
Applicant: Silicon Laboratories Inc.
Inventor： Mehmet Akif Altan , Steffen Skaug
Abstract: An apparatus includes an amplifier. The amplifier has two inputs, and an output. The amplifier has a pole in its transfer function. The frequency of the pole depends on the output current of the amplifier. The amplifier further includes a pole frequency tracking (PFT) circuit. The PFT circuit includes a source follower circuit.
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公开(公告)号：US10972077B2
公开(公告)日：2021-04-06
申请号：US16912652
申请日：2020-06-25
Applicant: Silicon Laboratories Inc.
Inventor： Steffen Skaug , Vitor Pereira , Arup Mukherji
Abstract: An integrated circuit including a functional circuit including at least one swapping circuit node, multiple duplicate electronic circuits, and a switch circuit. The duplicate electronic circuits are integrated in close proximity with each other each including at least one electronic device that is susceptible to RTN. The switch circuit electrically couples a different selected subset of at least one of the duplicate electronic circuits to the at least one swapping circuit node for each of successive switching states during operation of the functional circuit. A method of reducing noise including selecting a subset of the duplicate electronic circuits, electrically coupling the selected duplicate electronic devices to at least one swapping circuit node of a functional circuit, and repeating the selecting and electrically coupling in successive switching states during operation of the functional circuit for different subsets of the duplicate electronic circuits.
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公开(公告)号：US20180364748A1
公开(公告)日：2018-12-20
申请号：US15626425
申请日：2017-06-19
Applicant: Silicon Laboratories Inc.
Inventor： Li Wei , Steffen Skaug
CPC classification number: G05F1/575 , H02M3/158 , H02M2001/0025
Abstract: In an example, an apparatus includes: a pass device coupled between a supply voltage node and a load circuit and to provide a regulated voltage to the load circuit in response to a control signal received at a control terminal of the pass device; a first amplifier to compare a reference voltage to the regulated voltage and to output a comparison signal at a comparison node in response to the comparison; a second amplifier having an input device having a control terminal coupled to the comparison node to receive the comparison signal and to output the control signal to the pass device based at least in part in response to the comparison signal; and a feedback circuit to provide a feedback signal to the first amplifier based at least in part on a load current of the load circuit.
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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：US12107545B1
公开(公告)日：2024-10-01
申请号：US18308083
申请日：2023-04-27
Applicant: Silicon Laboratories Inc.
Inventor： Steffen Skaug
Abstract: In one aspect, an apparatus includes an oscillator to generate a clock signal, where the oscillator includes: at least one resistor; at least one capacitor; and a circuit coupled to the at least one resistor and the at least one capacitor, the circuit to generate the clock signal. The apparatus further includes a voltage regulator coupled to the oscillator to provide a regulated voltage to the oscillator, and a bulk voltage generator coupled to the voltage regulator. The bulk voltage generator may provide first and second bulk voltages to the voltage regulator to provide temperature compensation to the oscillator.
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Patent Agency Ranking
公开(公告)号：US20210320635A1
公开(公告)日：2021-10-14
申请号：US16848424
申请日：2020-04-14
Applicant: Silicon Laboratories Inc.
Inventor： Mehmet Akif Altan , Steffen Skaug
IPC: H03F3/45
Abstract: An apparatus includes an amplifier. The amplifier has two inputs, and an output. The amplifier has a pole in its transfer function. The frequency of the pole depends on the output current of the amplifier. The amplifier further includes a pole frequency tracking (PFT) circuit. The PFT circuit includes a source follower circuit.
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公开(公告)号：US20200328731A1
公开(公告)日：2020-10-15
申请号：US16912652
申请日：2020-06-25
Applicant: Silicon Laboratories Inc.
Inventor： Steffen Skaug , Vitor Pereira , Arup Mukherji
IPC: H03K3/013
Abstract: An integrated circuit including a functional circuit including at least one swapping circuit node, multiple duplicate electronic circuits, and a switch circuit. The duplicate electronic circuits are integrated in close proximity with each other each including at least one electronic device that is susceptible to RTN. The switch circuit electrically couples a different selected subset of at least one of the duplicate electronic circuits to the at least one swapping circuit node for each of successive switching states during operation of the functional circuit. A method of reducing noise including selecting a subset of the duplicate electronic circuits, electrically coupling the selected duplicate electronic devices to at least one swapping circuit node of a functional circuit, and repeating the selecting and electrically coupling in successive switching states during operation of the functional circuit for different subsets of the duplicate electronic circuits.
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公开(公告)号：US20230086910A1
公开(公告)日：2023-03-23
申请号：US17468218
申请日：2021-09-07
Applicant: Silicon Laboratories Inc.
Inventor： Steffen Skaug
IPC: H02M3/07
Abstract: A switch activation system including a charge pump, a load monitor, and a switch driver. The charge pump drives a negative voltage node to a predetermined negative voltage level. The load monitor monitors the charge pump and to assert a break done signal after the charge pump begins driving the negative voltage back to the predetermined negative voltage level after being increased. The switch driver turns on a first electronic switch in response to assertion of a corresponding activation signal and assertion of the break done signal. The break done signal is asserted only after electronic switches being turned off are fully turned off to avoid conflict. The charge pump operates at a frequency based on a difference between a voltage level of the negative voltage node and the predetermined negative voltage level to drive the negative voltage node back to its predetermined level within a predetermined period of time.
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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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10.发明授权公开(公告)号：US11784562B2
公开(公告)日：2023-10-10
申请号：US17468218
申请日：2021-09-07
Applicant: Silicon Laboratories Inc.
Inventor： Steffen Skaug
IPC: H02M3/07
CPC classification number: H02M3/071
Abstract: A switch activation system including a charge pump, a load monitor, and a switch driver. The charge pump drives a negative voltage node to a predetermined negative voltage level. The load monitor monitors the charge pump and to assert a break done signal after the charge pump begins driving the negative voltage back to the predetermined negative voltage level after being increased. The switch driver turns on a first electronic switch in response to assertion of a corresponding activation signal and assertion of the break done signal. The break done signal is asserted only after electronic switches being turned off are fully turned off to avoid conflict. The charge pump operates at a frequency based on a difference between a voltage level of the negative voltage node and the predetermined negative voltage level to drive the negative voltage node back to its predetermined level within a predetermined period of time.
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