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公开(公告)号：US10170982B2
公开(公告)日：2019-01-01
申请号：US14513326
申请日：2014-10-14
Applicant: Dialog Semiconductor GmbH , Dialog Semiconductor B.V.
Inventor： Marinus Wilhelmus Kruiskamp , Guillaume de Cremoux
Abstract: An auto-calibrated current sensing comparator is provided. A secondary dynamic comparator shares the same inputs and acts to adjust a calibration control of the current sensing comparator. The calibration control may be in the form of adjusting the offset of the current sensing comparator or adjusting a propagation delay that is added to its output.
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公开(公告)号：US09997999B2
公开(公告)日：2018-06-12
申请号：US14314271
申请日：2014-06-25
Applicant: Dialog Semiconductor GmbH
Inventor： Holger Petersen
CPC classification number: H02M3/07 , H02M1/15 , H02M2003/071 , H02M2003/072
Abstract: The present document relates to power transformers for electronic computing devices. In particular, a power converter configured to convert electrical power at a DC input voltage Vin into electrical power at a DC output voltage is described. The power converter comprises a plurality of flying capacitors, and a plurality of switches which are configured to arrange the plurality of flying capacitors in accordance to a sequence of operation phases. The power converter comprises a control unit configured to control the plurality of switches to repeat the sequence of operation phases at a duty cycle frequency. The plurality of flying capacitors is arranged in series during the operation phases of the sequence of operation phases. The sequence of operation phases comprises at least two operation phases during which the plurality of flying capacitors is arranged in a different order.
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公开(公告)号：US09949324B2
公开(公告)日：2018-04-17
申请号：US14706140
申请日：2015-05-07
Applicant: Dialog Semiconductor GmbH
Inventor： Nebojsa Jelaca
IPC: H05B33/08
CPC classification number: H05B33/0815 , H05B33/0809 , H05B33/0845 , H05B33/0896
Abstract: A power efficient method and system for ensuring a reliable operation of dimmers in conjunction with solid state lighting devices such as LED or OLED assemblies is presented. A controller for a driver circuit of a solid state light bulb assembly is described. The solid state light bulb assembly comprises a solid state light source. The driver circuit comprises a switched-mode power converter. The controller is configured to receive an input voltage indicative of a mains electricity supply submitted to a dimmer; to determine that the dimmer is in an off-phase, based on the input voltage; and, if it is determined that the dimmer is in an off-phase, to generate a control signal for the switched-mode power converter to operate the switched-mode power converter in a switched mode for discharging one or more capacitances at an input of the switched-mode power converter.
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公开(公告)号：US09929590B2
公开(公告)日：2018-03-27
申请号：US14580316
申请日：2014-12-23
Applicant: Dialog Semiconductor GmbH
Inventor： Ludmil Nikolov , Carlos Calisto
CPC classification number: H02J9/061 , G06F1/30 , H02J9/04 , H02J9/06 , Y10T307/344 , Y10T307/615 , Y10T307/625
Abstract: Circuits and methods providing a electronic power supply applicable to any dual supply rail systems, which require a smooth and uninterrupted output supply and a replica power path and autonomous mode of operation from the system power supply are disclosed. In a preferred embodiment of the invention the power supply is applied to a real time clock. An Innovative Replica Power Path concept and circuit implementation ensures the smooth and uninterrupted transfer of power from one input source to the other. The circuit features a Latched Supply Comparator that guarantees the commutation to the Replica Power Path only happens after the voltage is settled. Zero power consumption from the back-up energy source is achieved in the presence of an alternative higher voltage source. The generated RTC supply voltage does not suffer from abrupt changes when the voltage level of the main system power source (battery or charger) is connected or disconnected. The invention allows for maximum utilization of the energy left in the main battery, thus extending the life of the lower capacity backup battery/super-cap.
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公开(公告)号：US09880573B2
公开(公告)日：2018-01-30
申请号：US14147667
申请日：2014-01-06
Applicant: Dialog Semiconductor GmbH
Inventor： Zakaria Mengad , Mykhaylo Teplechuk
Abstract: A low dropout (LDO) device with improved linear mode comprising an error amplifier, a programmable attenuation factor circuit coupled to said error amplifier, a feedback network whose input is electrically connected to said programmable attenuation factor circuit and whose output is electrically coupled to the negative input of said error amplifier, a high side (HS) pre-drive circuit whose input is a high impedance (HiZ) mode signal, a low side (LS) pre-drive circuit whose input is a low pull-down input mode signal, a high side (HS) output stage element electrically coupled to said high side (HS) pre-drive circuit, a low side (LS) output stage element electrically coupled to said low side (LS) pre-drive circuit, and a high side sense (HSENSE) output stage element whose gate is electrically coupled to said high side (HS) pre-drive circuit, and whose gate and source are electrically connected to the output of said error amplifier.
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Patent Agency Ranking
公开(公告)号：US09859872B2
公开(公告)日：2018-01-02
申请号：US14188075
申请日：2014-02-24
Applicant: Dialog Semiconductor GmbH
Inventor： Adam Malpass
CPC classification number: H03K3/011 , G01K7/32 , G01K15/005 , H03K3/012
Abstract: An apparatus and method for a temperature and calibration utilizing resonant frequency peaks in an oscillator. A circuit providing resonant peaks for utilization for temperature measurements comprising a resonator device for providing an oscillating source, a variable gain-bandwidth amplifier in parallel with the crystal/resonator for providing modulation of the gain and/or bandwidth driving the crystal/resonator, and control of resonant peaks for selection for oscillation, a first capacitor electrically coupled to the parallel combination of the input of the variable gain-bandwidth amplifier, and the resonator device for providing charge storage for oscillation, and a second capacitor electrically coupled to parallel combination of the output of the variable gain-bandwidth amplifier, and the resonator device for providing charge storage for oscillation.
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公开(公告)号：US09835655B2
公开(公告)日：2017-12-05
申请号：US14308789
申请日：2014-06-19
Applicant: Dialog Semiconductor GmbH
Inventor： Seiichi Ozawa
CPC classification number: G01R19/0092 , H02M3/158 , H02M3/1582 , H02M2001/0009
Abstract: A current monitoring circuit capable of being integrated onto an integrated circuit chip with the current source to be monitored, wherein the monitored current is digitized to be transmitted within and external to the host integrated circuit chip. The current monitoring circuit was originally conceived to monitor output current of a buck switching regulator but can be used in other applications. A replica transistor is drain connected to a replicated transistor, wherein an operational transconductor controls the replica transistor to produce the same current that flows in the replicated transistor and connects a copy of the current of the replicated transistor current to an integrating type ADC.
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公开(公告)号：US09798340B2
公开(公告)日：2017-10-24
申请号：US14521765
申请日：2014-10-23
Applicant: Dialog Semiconductor GmbH
Inventor： Ambreesh Bhattad , Frank Kronmueller
CPC classification number: G05F1/56 , G05F1/562 , G05F1/569 , G05F1/573 , G05F1/5735 , H02H9/001 , H02M1/36
Abstract: A circuit is provided with inrush current protection through control of the output current at start-up by a current source that does not rely on the output capacitor and which provides a smooth transition from a controlled current mode during a start-up phase to a voltage regulation mode.
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公开(公告)号：US09755634B2
公开(公告)日：2017-09-05
申请号：US13906622
申请日：2013-05-31
Applicant: Dialog Semiconductor GmbH
Inventor： Horst Knoedgen
CPC classification number: H03K17/163 , H02M1/36
Abstract: The present document relates to a start-up circuit comprising a power switch wherein a circuit charges a supply voltage capacitor. The capacitor provides a supply voltage to a power switch; the power switch forms a switched power converter with a power converter network. The circuit comprises a source and gate interface for coupling the circuit to the power switch; a capacitor interface couples the circuit to the supply voltage capacitor; a start-up path couples the gate interface to the capacitor interface; wherein the startup path provides a voltage at the gate interface which is at or above a threshold voltage of the power switch; and a charging path couples the source interface to the capacitor interface; wherein the charging path provides a charging current to the capacitor interface, when the power switch is in on-state.
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公开(公告)号：US09671805B2
公开(公告)日：2017-06-06
申请号：US14632345
申请日：2015-02-26
Applicant: Dialog Semiconductor GmbH
Inventor： Stephan Drebinger , Roberto Curra
CPC classification number: G05F1/575 , H03F3/34 , H03F3/45183 , H03F2200/297 , H03F2203/45301 , H03F2203/45674
Abstract: Amplifiers, notably multi-stage amplifiers, such as linear regulators (e.g. low-dropout regulators) configured to provide a constant output voltage subject to load transients are presented. An amplifier is described, which comprises a first amplification stage configured to provide an intermediate voltage, based on an outer feedback voltage and based on a reference voltage. Furthermore, the amplifier comprises an output stage configured to provide a load current at an output voltage based on the intermediate voltage. In addition, the amplifier comprises an outer feedback circuit configured to derive the outer feedback voltage from the output voltage. The output stage comprises a buffer configured to provide a drive voltage based on the intermediate voltage and based on an inner feedback voltage derived from the output voltage. The buffer comprises a pass device which is configured to provide the load current at the output voltage based on the drive voltage.
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