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Intersil Americas Inc. Patents
Assignee:
Intersil Americas Inc.
Address:
Milpitas, CA
No. of patents:
562
Patents:


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Patent Number Title Of Patent Date Issued
RE43538 Method and apparatus for preventing boosting system bus when charging a battery July 24, 2012
A controllably alternating buck mode DC-DC converter conducts cycle by cycle analysis of the direction of inductor current flow to decide whether to operate in synchronous buck mode or standard buck mode for the next successive cycle. For each cycle of the PWM waveform controlling the
RE43513 Method and apparatus for preventing boosting system bus when charging a battery July 17, 2012
A controllably alternating buck mode DC-DC converter conducts cycle by cycle analysis of the direction of inductor current flow to decide whether to operate in synchronous buck mode or standard buck mode for the next successive cycle. For each cycle of the PWM waveform controlling the
RE43414 Synthetic ripple regulator May 29, 2012
A synthetic ripple regulator including a synthetic ripple voltage generator that generates a synthetic ripple voltage indicative of the ripple current through an output inductor. The regulator uses the synthetically generated ripple voltage to control toggling of a hysteretic compara
RE43291 PFM-PWM DC-DC converter providing DC offset correction to PWM error amplifier and equalizing reg April 3, 2012
To prevent a voltage glitch in the regulated DC output voltage of a PWM/PFM DC-DC converter when switching between PFM and PMW modes, the error amplifier of the converter's PWM regulation path is provided with a DC voltage offset correction mechanism. This mechanism "zeros-out" DC vo
RE43236 Automatic circuit and method for temperature compensation of oscillator frequency variation over March 13, 2012
An automatic temperature compensated real-time clock (RTC) chip includes a clock portion having a crystal oscillator block including crystal compensation circuitry adapted to be coupled to a crystal. The crystal compensation circuitry includes a non-linear capacitor DAC including a p
RE43042 Bipolar method and structure having improved BVCEO/RCS trade-off made with depletable collector December 27, 2011
In accordance with the invention, there are various methods of making an integrated circuit comprising a bipolar transistor. According to an embodiment of the invention, the bipolar transistor can comprise a substrate, a collector comprising a plurality of alternating doped regions,
RE42897 Current mode DC/DC converter with controlled output impedance November 8, 2011
A DC/DC converter has an output voltage and sources an output current to a load. The DC/DC converter includes an error amplifier with a reference input and a summing input. The reference input is electrically connected to a reference voltage. The summing input is electrically connected t
RE42532 Synchronous-rectified DC to DC converter with improved current sensing July 12, 2011
A DC to DC buck pulse width modulator converter circuit includes an input, a high side output and a low side output. A high side switch is electrically connected between a common output node and a voltage supply, and controls a flow of current therethrough dependent upon the high side
RE42307 Thermally compensated current sensing of intrinsic power converter elements April 26, 2011
A DC-to-DC converter includes one or more power switches, a pulse width modulation circuit for generating control pulses for the power switches, and an output inductor connected to the power switches. A thermally compensated current sensor is connected to an intrinsic current sensing
RE42237 Active mode line voltage regulator for ringing subscriber line interface circuit March 22, 2011
A voltage regulator circuit arrangement limits the DC voltage applied to a tip and ring amplifiers of a subscriber line interface circuit (SLIC), each of which has a first polarity input coupled to a first current flow path to which a DC input (battery) voltage is coupled. A first curren
RE42142 Method and apparatus for preventing boosting system bus when charging a battery February 15, 2011
A controllably alternating buck mode DC-DC converter conducts cycle by cycle analysis of the direction of inductor current flow to decide whether to operate in synchronous buck mode or standard buck mode for the next successive cycle. For each cycle of the PWM waveform controlling the
RE42123 Programmable subscriber line circuit partitioned into high voltage interface and digital control February 8, 2011
A subscriber line interface circuit has a battery-powered, high voltage analog section, that drives tip and ring lines of a subscriber loop, and a mixed signal (low voltage and digital signal processing) section, that monitors and controls the high voltage analog section. An input signal
RE42063 Multi-phase converter with balanced currents January 25, 2011
A multi-phase DC/DC converter having an output voltage and including a plurality of converter channels. Each converter channel includes a converter channel input and a converter channel output. Each converter channel is configured for generating a converter channel current and for ad
RE42037 Programmable current-sensing circuit providing continuous temperature compensation for DC-DC con January 18, 2011
A current-sensing and correction circuit having programmable temperature compensation circuitry that is incorporated into a pulse width modulation controller of a buck mode DC--DC converter. The front end of the controller contains a sense amplifier, having an input coupled via a cur
RE41599 Method of setting bi-directional offset in a PWM controller using a single programming pin August 31, 2010
A user-programmable bi-directional, constant current generator circuit allows external programming of either a positive (+) or a negative (-) polarity output current, for injection into one of two locations of the PWM controller circuit of a DC-DC voltage converter. The parameters of
RE40915 Programmable current-sensing circuit providing continuous temperature compensation for DC-DC con September 15, 2009
A current-sensing and correction circuit having programmable temperature compensation circuitry that is incorporated into a pulse width modulation controller of a buck mode DC--DC converter. The front end of the controller contains a sense amplifier, having an input coupled via a cur
RE40593 Multi-phase converter with balanced currents December 2, 2008
A multi-phase DC/DC converter having an output voltage and including a plurality of converter channels. Each converter channel includes a converter channel input and a converter channel output. Each converter channel is configured for generating a converter channel current and for ad
RE38906 Current mode DC/DC converter with controlled output impedance December 6, 2005
A DC/DC converter has an output voltage and sources an output current to a load. The DC/DC converter includes an error amplifier with a reference input and a summing input. The reference input is electrically connected to a reference voltage. The summing input is electrically connected t
RE38780 Current mode DC/DC converter with controlled output impedance August 23, 2005
A DC/DC converter has an output voltage and sources an output current to a load. The DC/DC converter includes an error amplifier with a reference input and a summing input. The reference input is electrically connected to a reference voltage. The summing input is electrically connected t
8576928 Capacitive divider transmission scheme for improved communications isolation November 5, 2013
A communication system comprising a first and second transceiver is provided. The first transceiver has a first and second port coupled to a communication medium, wherein a first differential capacitor couples the first and second ports together. The second transceiver has a third and
8575910 Single-cycle charge regulator for digital control November 5, 2013
A single-cycle charge regulator (SCCR) may be used in operating a power converter at a constant frequency without requiring compensation. The SCCR may include a first control loop to generate an error value based on the output voltage of the power converter and a reference voltage, and t
8575902 Deactivating parallel MOSFETs to improve light load efficiency November 5, 2013
Circuits, methods, and apparatus that reduce the power required to drive transistors in switching power supply regulators under various load conditions. One example provides a power supply regulator having multiple parallel transistors in order to reduce series on resistance. When the
8575747 Clip interconnect with encapsulation material locking feature November 5, 2013
A clip interconnect comprises a columnar part, a bridge part, and a locking feature. The bridge part has a plurality of sides. The columnar part and the bridge part are configured to form an angle at an interface between the columnar part and the bridge part. The locking feature is l
8570009 Power supply with a magnetically uncoupled phase and an odd number of magnetically coupled phase October 29, 2013
An embodiment of a power supply includes an input node that receives an input voltage, an output node on which a regulated output voltage is provided, an odd number of magnetically coupled phase paths each coupled between the input and output nodes, and a first magnetically uncoupled
8570006 Device and method for controlling a buck-boost converter October 29, 2013
A circuit, device, and method for controlling a buck-boost circuit includes a bootstrap capacitor voltage regulator circuit and a comparator circuit. The bootstrap capacitor voltage regulator circuit is electrically coupled to a buck-mode bootstrap capacitor of the buck-boost convert
8569963 Cascade boost and inverting buck converter with independent control October 29, 2013
A converter system including a cascade boost converter and inverting buck converter and controller for converting a rectified AC voltage to a DC output current. The system uses inductors and is configured to use a common reference voltage. The controller is configured to control swit
8569896 Active area bonding compatible high current structures October 29, 2013
A semiconductor structure comprises a top metal layer, a bond pad formed on the top metal layer, a conductor formed below the top metal layer, and an insulation layer separating the conductor from the top metal layer. The top metal layer includes a sub-layer of relatively stiff material
8565284 Spread spectrum clock generator and method October 22, 2013
A spread spectrum clock signal generator and an accompanying method provide a spread spectrum clock signal of a reduced electromagnetic interference. The spread spectrum clock signal generator includes (a) a state machine, which maintains a current state of the spread spectrum clock
8564463 Integrated Non-Linearity (INL) and Differential Non-Linearity (DNL) correction techniques for di October 22, 2013
INL values are determined for sub-segments of a DAC adapted to accept N bit digital input codes, and a first set of correction codes that can be used to reduce to a range of INL values (to improve linearity of the DAC) are determined and stored. Additionally, DNL values are determined fo
8300114 Mixed format media transmission systems and methods October 30, 2012
Systems and methods for operating cameras are described. An image signal received from an image sensor can be processed as a plurality of video signals representative of the image signal. An encoder may combine baseband and digital video signals in an output signal for transmission o
8299770 Threshold voltage monitoring and control in synchronous power converters October 30, 2012
A method of providing threshold voltage monitoring and control in synchronous power converters is provided. The method includes establishing a threshold voltage level for at least one of a gate drive voltage for an upper and a lower power switch in a synchronous power converter, each
8299768 PWM voltage converter with redundancy and feedback adjustment October 30, 2012
A pulse-width modulated (PWM) DC-DC converter has a multitude of redundant channels supplying PWM signals to a voter whose output voltage controls the regulated DC output voltage. To ensure that single transient events, single permanent faults, or mismatches in the electrical charact
8299764 System and method for determining output voltage level information from phase voltage for switch October 30, 2012
A controller integrated circuit for a switched mode regulator which converts an input voltage to an output voltage. The controller includes a phase pin, a modulation circuit and a filter. The modulation circuit is configured to regulate the output voltage using the input voltage and
8294447 Advanced slope injection for input current limiting of switch-mode DC/DC converter October 23, 2012
A DC/DC converter comprising voltage conversion circuitry for generating a regulated output voltage responsive to an input current and at least one switching control signal. A current control loop generates the at least one switching control signal to limit an input current responsive
8294375 Adaptive PWM controller for multi-phase LED driver October 23, 2012
A multi channel LED driver comprises a plurality of LED strings. Each of the plurality of LED strings are associated with a separate channel. A voltage regulator generates an output voltage to the plurality of LED strings responsive to an input voltage and a PWM control signal. First
8288892 Series/parallel power supply switching October 16, 2012
A device which can dynamically configure an array of power supply cells such as photovoltaic (PV) solar cells to provide power to a load device based on the power requirements of the load device. By selectively configuring the array of power supply cells according to one of a number
8283695 Devices with adjustable dual-polarity trigger- and holding-votage/current for high level of elec October 9, 2012
Symmetrical/asymmetrical bidirectional S-shaped I-V characteristics with trigger voltages ranging from 10 V to over 40 V and relatively high holding current are obtained for advanced sub-micron silicided CMOS (Complementary Metal Oxide Semiconductor)/BiCMOS (Bipolar CMOS) technologie
8278905 Rotating gain resistors to produce a bandgap voltage with low-drift October 2, 2012
In accordance with an embodiment of the present invention, a bandgap voltage reference circuit includes a plurality of circuit branches, a plurality of resistors and a plurality of switches. The plurality of switches are used to selectively change over time which of the resistors are
8278830 Dynamic headroom control for LCD driver October 2, 2012
An LED driver controller comprises a voltage regulator for controlling an output voltage to a top of a plurality of LED strings responsive to at least a reference voltage. A plurality of first circuitries each associated with a node at a bottom of each of the plurality of LED strings
8274160 Active area bonding compatible high current structures September 25, 2012
A method of forming a semiconductor structure is provided. One method comprises forming a device region between a substrate and a bond pad. Patterning a conductor between the bond pad and the device region with gaps. Filling the gaps with insulation material that is harder than the c
8274037 Automatic calibration technique for time of flight (TOF) transceivers September 25, 2012
A system and method for automatically calibrating a Time-of-Flight (TOF) transceiver system for proximity/motion detection, is provided. Moreover, the system comprises a component that senses a signal (e.g., current or voltage) at an light emitting diode (LED), an attenuator, a signal
8271567 Methods and systems for compression, storage, and generation of digital filter coefficients September 18, 2012
A method and system for compressing coefficients of a digital filter is provided. In one approach, the method comprises providing a digital filter having a plurality of consecutive filter coefficients including a first filter coefficient, determining consecutive difference values bet
8269657 Background calibration of offsets in interleaved analog to digital converters September 18, 2012
A multi-channel time interleaved ADC (TIADC) provides for offset estimation and correction. The correction is accomplished through analog adjustment of offset rather than by digital correction of their outputs. In certain aspects, polarity reversal circuits may be used to further imp
8269474 System and method for reducing voltage overshoot during load release within a buck regulator September 18, 2012
A buck regulator comprises an upper switching transistor connected between a voltage input node and a phase node. A lower switching transistor is connected between the phase node and a ground node. An inductor is connected between the phase node and an output voltage node. Circuitry
8268693 Method for fabricating a radiation hardened device September 18, 2012
A "tabbed" MOS device provides radiation hardness while supporting reduced gate width requirements. The "tabbed" MOS device also utilizes a body tie ring, which reduces field threshold leakage. In one implementation the "tabbed" MOS device is designed such that a width of the tab is
8258453 Long range proximity and/or motion detector with ambient light detection capabilities September 4, 2012
Provided herein are optical sensor systems that can be used for ambient light detection, proximity detection and motion detection, as well as to larger systems that include such an optical sensor system, and to related methods. In an embodiment, the optical sensor system includes a front
8242510 Monolithic integration of gallium nitride and silicon devices and circuits, structure and method August 14, 2012
A structure and method for a semiconductor device includes a silicon device layer and a gallium nitride (GaN) device layer. In an embodiment, the silicon device layer and the GaN device layer have upper surfaces which are coplanar with each other. In another embodiment, the GaN device
8242430 Apparatuses and methods that reduce mismatch errors associated with analog subtractions used for August 14, 2012
A system and method for adaptive analog infrared subtraction during ambient light sensing is provided. The system employs a current mirror circuit to perform an analog subtraction of currents (I.sub.IR and I.sub.IR+AB) obtained from photodiodes. An ADC is employed to digitize the out
8239597 Device-to-device communication bus for distributed power management August 7, 2012
A Device-to-Device Communication Bus protocol may facilitate transmission of a two to four byte packet by any device sharing the bus. All devices on the bus may monitor the bus, receiving all packets transmitted by other devices and recognizing when they may initiate transmission. The
8237423 Active droop current sharing August 7, 2012
Point-of-load (POL) regulators may be configured as multiphase POL DC-to-DC (direct current to direct current) converters, operating in a multiphase configuration in order to boost the total current available to a system. Current balancing may be performed by utilizing an active low
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