Patents Assigned to Microsemi Corporation
  • Patent number: 10320290
    Abstract: A voltage regulator includes an input terminal, an output terminal, a control circuitry, a buck mode switching converter, and a low dropout regulator circuit. The buck mode switching converter is arranged to convert a voltage signal received at the input terminal to a first voltage signal at the output terminal responsive to a first predetermined signal output from the control circuitry. The buck mode switching converter includes an electronically controlled switch in communication with an energy storage element. The low dropout regulator circuit is coupled between the input terminal and the output terminal and includes a linear circuit and is arranged to control a voltage drop across the linear circuit so as to provide a second voltage signal at the output terminal responsive to a second predetermined signal output from the control circuitry.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: June 11, 2019
    Assignee: Microsemi Corporation
    Inventors: Arkadiy Peker, Bernard Drexler, Tamir Reshef, Reghu Rajan
  • Patent number: 10229803
    Abstract: Various high voltage systems may benefit from a suitable relay system. For example, a relay box may be provided with a shock and vibration resistant arrangement including a sealed coil box within the sealed relay box. For example, an apparatus can include a coil box containing coils, inside pole pieces, and permanent magnets, wherein the coils, inside pole pieces, and permanent magnets can be configured to actuate an armature assembly external to the coil box. The apparatus can also include outside pole pieces configured to move a relay armature of the armature assembly responsive to energizing of the coils. Moving the relay armature can include overcoming a latching of at least one of the permanent magnets.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: March 12, 2019
    Assignee: Microsemi Corporation
    Inventor: Syrus Tajbakhsh
  • Patent number: 10211017
    Abstract: Various high voltage systems may benefit from a suitable relay system. For example, a relay box may be provided with a shock and vibration resistant arrangement including a sealed coil box within the sealed relay box. For example, an apparatus can include a coil box containing coils, inside pole pieces, and permanent magnets, wherein the coils, inside pole pieces, and permanent magnets can be configured to actuate an armature assembly external to the coil box. The apparatus can also include outside pole pieces configured to move a relay armature of the armature assembly responsive to energizing of the coils. Moving the relay armature can include overcoming a latching of at least one of the permanent magnets.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: February 19, 2019
    Assignee: Microsemi Corporation
    Inventor: Syrus Tajbakhsh
  • Patent number: 10158444
    Abstract: The present invention generally relates to methods and apparatuses for event-driven and stateless precision time transfer. In one embodiment, a master device creates and launches Precision Timing Protocol (PTP) Sync packets, as well as Follow-up packets in the case of two-step clock operation, on an event-driven basis in response to the receipt of a Delay Request message from a slave device, rather than based on scheduling performed by the master device. Doing so reduces the load on the master device and permits the master to serve a larger number of slave devices. In addition, PTP Announce messages, which are not used for calculating the time offset between master and slave devices, may be sent in response to some Delay Request messages using an adjustable sampling rate (e.g., 1 every x Delay Request messages).
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: December 18, 2018
    Assignee: Microsemi Corporation
    Inventor: Samer Darras
  • Patent number: 10075062
    Abstract: A dual level current limit apparatus constituted of: an electronically controlled switch coupled between a load and a line voltage; and a control circuitry arranged to alternately: control said electronically controlled switch to limit the magnitude of current flowing therethrough responsive to the difference between a predetermined first function of the current magnitude and a predetermined reference voltage, and control said electronically controlled switch to limit the magnitude of current flowing therethrough responsive to the difference between said first function of the current magnitude and a predetermined second function of the load voltage.
    Type: Grant
    Filed: October 21, 2017
    Date of Patent: September 11, 2018
    Assignee: Microsemi Corporation
    Inventor: Bruce Ferguson
  • Publication number: 20180196453
    Abstract: Various electronics systems may benefit from appropriate limitation of short-to-ground current. For example, sensor systems may benefit from a voltage sensing mechanism to minimize short-to-ground current for low drop-out and bypass mode regulators. A system can include a first power transistor configured to operate in a low drop-out mode. The system can also include a short to ground sensor configured to control current to the first power transistor. The short to ground sensor can be configured to limit a maximum short-circuit current below a predefined load current capability.
    Type: Application
    Filed: January 10, 2018
    Publication date: July 12, 2018
    Applicant: Microsemi Corporation
    Inventors: Subhasis Sasmal, Jebas Paul Daniel T, Naveen Cannankurichi, Bernard Drexler
  • Patent number: 9929651
    Abstract: A hysteretic power converter constituted of: a switched mode power supply comprising an inductor, an electronically controlled switch and an output capacitor, the switch arranged to alternately open and close a loop with the inductor and a power source; a hysteretic comparator, a first input coupled to a feedback connection and arranged to receive from the feedback connection a feedback signal providing a first representation of the voltage across the output capacitor, the electronically controlled switch opened and closed responsive to an output of the hysteretic comparator; a reference voltage source arranged to generate a reference voltage, the generated reference voltage coupled to a second input of the hysteretic comparator; and a voltage coupler, the voltage coupler arranged to couple a second representation of the voltage across the output capacitor to the second input of the hysteretic comparator, such that the second representation is added to the generated reference voltage.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: March 27, 2018
    Assignee: Microsemi Corporation
    Inventors: Naveen Cannankurichi, Sunny Joel, Paul Walker
  • Patent number: 9927469
    Abstract: A power detector constituted of: a transconductance element arranged to output a rectified detection current, the magnitude thereof arranged to increase exponentially responsive to a linear increase in the amplitude of an input signal; and at least one p-n junction based device, a function of the rectified detection current arranged to flow there through. The output of the power detector is a function of the voltage across the at least one p-n junction based device.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: March 27, 2018
    Assignee: Microsemi Corporation
    Inventor: Brian Eplett
  • Patent number: 9923727
    Abstract: A respective electronically controlled switch is provided in series with the output of each PD. A control circuit having a timer functionality is further provided, with the electronically controlled switches responsive to the control circuit. Upon detection that a second PD, defined temporally, is provided with operating power, the respective electronically controlled switch is maintained open for a predetermined hold-off time period sufficient to ensure detection by the respective PD control state machine of the completion of startup. After expiration of the predetermined hold-off time period, the respective electronically controlled switch is closed thus enabling normal operation.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: March 20, 2018
    Assignee: Microsemi Corporation
    Inventors: Poldi Rimboim, Lazar Rozenblat, Dennis L Mattocks
  • Patent number: 9839082
    Abstract: A flyback converter is provided with a first output associated with a first secondary winding, a primary side controller arranged to maintain the first output at a predetermined voltage level and a second output associated with a second secondary windings; an LED controller. A first secondary electronically controlled switch is responsive to the LED controller; a first LED luminaire arranged to provide a first illumination responsive to a power signal on the second output when the first secondary electronically controlled switch is in a closed state and not provide the first illumination when the first secondary electronically controlled switch is in the open state, wherein the turns ratio of the first secondary winding and the second secondary winding is such that power is delivered to the first output via the first unidirectional electronic valve only when the first secondary electronically controlled switch is switched to the open state.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: December 5, 2017
    Assignee: Microsemi Corporation
    Inventor: Xiaoping Jin
  • Patent number: 9709603
    Abstract: A current sensing system constituted of: an impedance element; a switching network arranged to alternately couple a first end of the impedance element between a supply voltage and return, the impedance element arranged to develop a voltage there across reflecting a current flow to a load coupled to the second end of the impedance element; a first stage amplifier, a first and second input thereof respectively coupled to the first and second end of the impedance element, a power supply input thereof coupled to a voltage greater than the supply voltage and a return thereof coupled to the first end of the impedance element, the amplifier having a first and second output, the potential difference reflecting the impedance element voltage times a first stage gain; and a second stage amplifier, a first and second input thereof respectively coupled to a first and second output of the first stage amplifier.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: July 18, 2017
    Assignee: Microsemi Corporation
    Inventor: Bruce Ferguson
  • Patent number: 9677913
    Abstract: Inductive displacement sensors and methods of using them may be useful in a variety of contexts. For example, systems for precisely measuring linear or angular motion may use inductive displacement sensors to measure changes in position. An apparatus, such as a sensor, can include a primary inductor. The apparatus can also include a first secondary inductor that is field-coupled to the primary inductor. The apparatus can further include a second secondary inductor that is field-coupled to the primary inductor. The first secondary inductor and the second secondary inductor can be configured as coordinated inductors to detect motion of a coupler. The coordinated inductors can be configured to provide a reference signal and a measurement signal, wherein the reference signal has a constant amplitude across a range of motion of the coupler.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: June 13, 2017
    Assignee: MICROSEMI CORPORATION
    Inventors: Shiju Wang, Timothy R. Jackson
  • Patent number: 9671288
    Abstract: A solid-state photodetector with variable spectral response that can produce a narrow or wide response spectrum of incident light. Some embodiments include a solid-state device structure that includes a first photodiode and a second photodiode that share a common anode region. Bias voltages applied to the first photodiode and/or the second photodiode may be used to control the thicknesses of depletion regions of the photodiodes and/or a common anode region to vary the spectral response of the photodetector. Thickness of the depletion regions and/or the common anode region may be controlled based on resistance between multiple contacts of the common anode region and/or capacitance of the depletion regions. Embodiments include control circuits and methods for determining spectral characteristics of incident light using the variable spectral response photodetector.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: June 6, 2017
    Assignee: Microsemi Corporation
    Inventor: Michael J. McNutt
  • Patent number: 9614452
    Abstract: A LED driving arrangement constituted of: a control circuitry; an inductance element having a primary side and a secondary side; the inductance element arranged, responsive to a switching circuit, to receive power at the primary side from a power source, and the inductance element further arranged, responsive to the received power at the primary side, to output at the secondary side a function of the received power; at least LED based luminaire; a parasitic capacitance between the at least one LED based luminaire and a chassis; and an electronically controlled switch coupled between the secondary side of the inductance element and the at least one LED based luminaire, wherein the electronically controlled switch and the secondary side of the inductance element and a discharge path of the parasitic capacitance are coupled in series.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: April 4, 2017
    Assignee: Microsemi Corporation
    Inventors: Xiaoping Jin, Juan R Cendejas
  • Patent number: 9613918
    Abstract: High power multi-chip module packages for packaging semiconductor dice are disclosed. The disclosed packages have an output power of at least 1 kilowatt (kW) and can have an operating signal frequency in a range of hundreds of MHz. The high power multi-chip module packages have base plates with multiple planes or layers that can be conductive and may be thin metal layers in some examples. The multiple planes are formed and overlaid in such a way that they help reduce stray inductance values caused by the packaging itself, which improves overall device operation and efficiency. Current loops created when one of the multi-chip modules is in a turn-on condition are balanced and opposed and generate a minimized B-Field that is restricted by the manner in which the multiples planes of the base plate are overlaid, thus reducing the stray inductance values and improving device operation.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: April 4, 2017
    Assignee: MICROSEMI CORPORATION
    Inventors: George J. Krausse, III, Wang-Chang Albert Gu
  • Patent number: 9601990
    Abstract: A power factor correction (PFC) power converter is disclosed that converts AC input power to DC output power. A single stage of the PFC power converter performs both the DC-DC power conversion and the power factor correction for the power converter. The disclosed PFC power converters are efficient in energy conversion and have a power factor of 0.9-1.0. Further, the disclosed PFC power converters can be implemented in both low and high power applications above 75 W.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: March 21, 2017
    Assignee: Microsemi Corporation
    Inventor: Xiao Ping Jin
  • Patent number: 9596650
    Abstract: In a method of establishing communication between a primary node and secondary nodes over communications channels, the secondary nodes are placed in a sleep state in the absence of active communications and are responsive to a wake-up message transmitted over the one or more communications channels from the primary node to enter a wake-up state. A wake-up message is sent from an instigator at the primary node to a receptor at a said secondary node. The communications channels with the receptor at said secondary node are periodically sniffed for a valid wake-up message. In response to reception of a valid wake-up message the receptor places the secondary node in the wake-up state. The instigator and receptor employ a selected operational mode being defined by the timing of the wake-up message and sniff pattern at the receptor. The selected operational mode is changed to suit different channel conditions.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: March 14, 2017
    Assignee: Microsemi Corporation
    Inventor: Peter Bradley
  • Publication number: 20170040132
    Abstract: Various high voltage systems may benefit from a suitable relay system. For example, a relay box may be provided with a shock and vibration resistant arrangement including a sealed coil box within the sealed relay box. For example, an apparatus can include a coil box containing coils, inside pole pieces, and permanent magnets, wherein the coils, inside pole pieces, and permanent magnets can be configured to actuate an armature assembly external to the coil box. The apparatus can also include outside pole pieces configured to move a relay armature of the armature assembly responsive to energizing of the coils. Moving the relay armature can include overcoming a latching of at least one of the permanent magnets.
    Type: Application
    Filed: August 9, 2016
    Publication date: February 9, 2017
    Applicant: Microsemi Corporation
    Inventor: Syrus Tajbakhsh
  • Publication number: 20170040133
    Abstract: Various high voltage systems may benefit from a suitable relay system. For example, a relay box may be provided with a shock and vibration resistant arrangement including a sealed coil box within the sealed relay box. For example, an apparatus can include a coil box containing coils, inside pole pieces, and permanent magnets, wherein the coils, inside pole pieces, and permanent magnets can be configured to actuate an armature assembly external to the coil box. The apparatus can also include outside pole pieces configured to move a relay armature of the armature assembly responsive to energizing of the coils. Moving the relay armature can include overcoming a latching of at least one of the permanent magnets.
    Type: Application
    Filed: August 9, 2016
    Publication date: February 9, 2017
    Applicant: Microsemi Corporation
    Inventor: Syrus Tajbakhsh
  • Patent number: RE46502
    Abstract: An arrangement wherein a plurality of LED strings are driven with a balanced drive signal, i.e. a drive signal wherein the positive side and negative side are of equal energy over time, is provided. In a preferred embodiment, the drive signal is balanced responsive to a capacitor provided between a switching network and a driving transformer. Balance of current between various LED strings is provided by a balancing transformer.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: August 1, 2017
    Assignee: Microsemi Corporation
    Inventor: Xiaoping Jin