Intersil Patent Applications

SYSTEMS AND METHODS FOR OPTICAL PROXIMITY DETECTION WITH MULTIPLE FIELD OF VIEWS

Granted: September 21, 2017
Application Number: 20170269211
An optical proximity detector includes a plurality photodetectors (PDs) and a winner-take-all (WTA) circuit. Each of the PDs has a respective field of view (FOV) and produces a respective analog current detection signal indicative of light incident on and detected by the PD. In an embodiment, the WTA circuit includes a comparator and a multiplexor (MUX). The comparator compares the analog current detection signals produced by the PDs and produces a selection signal in dependence thereon.…

METHOD AND SYSTEM FOR SMOOTH VIDEO TRANSITION BETWEEN VIDEO SOURCES

Granted: September 14, 2017
Application Number: 20170264793
A method includes determining whether to switch from a first input video signal to a second input video signal. Upon switching from a first input video signal to a second input video signal, determining whether the current displayed frame has terminated. If the current displayed frame has terminated, process the second video input signal and load data corresponding to the second video input signal from the timing generator, scale and pixel clock registers correspondingly into the timing…

SYSTEM AND METHOD FOR MAINTAINING A CONSTANT OUTPUT VOLTAGE RIPPLE IN A BUCK CONVERTER IN DISCONTINUOUS CONDUCTION MODE

Granted: August 17, 2017
Application Number: 20170237347
The system and method creates a substantially constant output voltage ripple in a buck converter in discontinuous conduction mode by varying the on-time of a pulse width modulator (PWM) signal driving the buck converter when the buck converter is operating in discontinuous conduction mode. A first signal is generated that is a function of the switching frequency of the buck converter. This signal is low-pass filtered and compared with a second signal that is a function of the switching…

HYSTERETIC CURRENT MODE BUCK-BOOST CONTROL ARCHITECTURE

Granted: July 20, 2017
Application Number: 20170207704
A hysteretic current mode buck-boost voltage regulator including a buck-boost voltage converter, a switching controller, a window circuit, a ramp circuit, and a timing circuit. The timing circuit may be additional ramp circuits. The voltage converter is toggled between first and second switching states during a boost mode, is toggled between third and fourth switching states during a buck mode, and is sequentially cycled through each switching state during a buck-boost mode. The ramp…

OPTICAL SENSORS THAT COMPENSATE FOR AMBIENT LIGHT AND INTERFERENCE LIGHT

Granted: February 2, 2017
Application Number: 20170034888
Certain embodiments described herein relate to optical sensors including a light detector and including and/or for use with a light source, and methods for use with such optical sensors. Certain embodiments involve detecting an amount of ambient light that is incident on the light detector and producing ambient light detection data indicative thereof. Additionally, such embodiments involve detecting interference light and producing interference light detection data indicative thereof.…

CURRENT SYNTHESIZER CORRECTION

Granted: December 8, 2016
Application Number: 20160359489
An adjustable current-synthesizer may generate synthesized current representative of an actual current, according to a model of a circuit that produces the actual current. The current synthesizer may under-sample a current sense signal derived from the actual current to obtain a few samples of the actual current, which are then used to adjust the synthesized current, thereby ensuring accuracy of the synthesized current. Sample values of the actual current are compared with corresponding…

OPTOELECTRONIC DEVICE PACKAGES

Granted: October 20, 2016
Application Number: 20160306072
An optical proximity sensor comprises a light detector die including a light detector sensor area and at least one bond pad on a portion of the light detector die not including the light detector sensor area. A light source die, including anode and cathode terminals, is attached to a portion of the light detector die not including the light detector sensor area, such that at least one of the terminals of the light source die, on a bottom of the light source die, is attached to at least…

WAFER LEVEL OPTOELECTRONIC DEVICE PACKAGES WITH CROSSTALK BARRIERS AND METHODS FOR MAKING THE SAME

Granted: October 20, 2016
Application Number: 20160307957
A method for wafer level fabricating a plurality of optoelectronic devices, starting with a wafer that includes a plurality of light detector sensor regions, includes attaching each of a plurality of light source dies to one of a plurality of bond pads on a top surface of the wafer that includes the plurality of light detector sensor regions. The method also includes attaching, to the wafer, a preformed opaque structure made off-wafer from an opaque material, wherein the preformed opaque…

SCANNING PROJECTORS THAT USE MULTIPLE PULSES PER PIXEL PERIOD TO REDUCE COLOR SHIFTS, AND METHODS AND CONTROLLERS FOR USE THEREWITH

Granted: October 13, 2016
Application Number: 20160301898
A scanning projector system includes a controller, a driver and one or more micro-mirror(s). The controller produces first, second and third pixel data in dependence on a video signal. The driver drives first, second and third light emitting elements in dependence on the first, second and third pixel data, to thereby emit light of first, second and third colors. The micro-mirror(s) project an image in dependence on light beams produced in dependence on the light of the first, second and…

SCANNING PROJECTORS THAT USE GUARD BANDS TO REDUCE COLOR SHIFTS, AND METHODS AND CONTROLLERS FOR USE THEREWITH

Granted: October 13, 2016
Application Number: 20160301905
A scanning projector system includes a controller, a driver and one or more micro-mirror(s). The controller produces first, second and third pixel data in dependence on a video signal. The driver drives first, second and third light emitting elements in dependence on the first, second and third pixel data produced by the controller, to thereby emit light of first, second and third colors. The micro-mirror(s) project an image in dependence on light beams produced in dependence on the…

REMOTE DIFFERENTIAL VOLTAGE SENSING

Granted: March 3, 2016
Application Number: 20160061866
A remote differential voltage sensing circuit having a voltage input (Vin) and a voltage output (Vout), comprises a dual differential input stage including a common-source or common-collector differential input stage in parallel with a common-gate or common-base differential input stage. The common-source or collector differential input stage has differential inputs, one coupled to the voltage input (Vin) and the other coupled to the voltage output (Vout). The common-gate or common-base…

OPTICAL PROXIMITY SENSORS WITH RECONFIGURABLE PHOTODIODE ARRAY

Granted: December 31, 2015
Application Number: 20150378013
Optical proximity sensors, methods for use therewith, and systems including optical proximity sensor are described herein. Such an optical proximity sensor includes a light source and a light detector, wherein the light detector includes a plurality of individually selectable photodiodes (PDs). During a calibration mode, individual PDs of the plurality of PDs of the light detector are tested to identify which PDs are crosstalk dominated. During an operation mode, the PDs of the light…

VOLTAGE CONVERTERS AND METHODS FOR USE THEREWITH

Granted: December 24, 2015
Application Number: 20150372613
A voltage error signal VERR is provided to a PWM controller of a voltage regular and used to produce a PWM signal that drives a power stage of the regulator. When operating in an adaptor current limit regulation mode, an adaptor current sense voltage VACS, indicative of an adapter current IA, is compared to an adapter current reference voltage VAC—REF to produce an adapter current error signal VAC—ERR. A compensator receives the adapter current error signal VAC—ERR and outputs a…

SYSTEMS AND METHODS FOR OPTICAL PROXIMITY DETECTION WITH MULTIPLE FIELD OF VIEWS

Granted: December 17, 2015
Application Number: 20150362594
An optical proximity detector includes a plurality photodetectors (PDs) and a winner-take-all (WTA) circuit. Each of the PDs has a respective field of view (FOV) and produces a respective analog current detection signal indicative of light incident on and detected by the PD. In an embodiment, the WTA circuit includes a comparator and a multiplexor (MUX). The comparator compares the analog current detection signals produced by the PDs and produces a selection signal in dependence thereon.…

PWM/PFM CONTROLLER FOR USE WITH SWITCHED-MODE POWER SUPPLY

Granted: March 5, 2015
Application Number: 20150061624
A controller, for use with an SMPS DC-DC converter, includes a PWM/PFM generator and a switch driver. The PWM/PFM generator simultaneously generates CTRLPWM and CTRLPFM signals in dependence on a CTRL signal. The switch driver generates a drive signal in dependence on both the CTRLPWM and CTRLPFM signals. The drive signal is used to control a power switch of the DC-DC converter. The CTRL signal is generated in dependence on a feedback signal indicative of an output voltage or current of…

SMOOTH TRANSITION OF A POWER SUPPLY FROM A FIRST MODE, SUCH AS A PULSE-FREQUENCY-MODULATION (PFM) MODE, TO A SECOND MODE, SUCH AS A PULSE-WIDTH-MODULATION (PWM) MODE

Granted: March 5, 2015
Application Number: 20150061626
In an embodiment, an apparatus, such as a power-supply controller, includes a generator and an adjuster. The generator is configured to provide a switching signal that causes a power supply to generate a regulated output signal, and the adjuster is configured to impart a condition to the power supply while the power supply is operating in a first mode, the condition being approximately equal to a condition that the power supply would have if the power supply were operating in a second…

SYSTEM AND METHOD OF EQUIVALENT SERIES INDUCTANCE CANCELLATION

Granted: March 5, 2015
Application Number: 20150061632
An equivalent series inductance (ESL) cancel circuit for a regulator for adjusting a feedback voltage by attenuating a magnitude of a square wave ripple voltage developed on an output voltage. The regulator includes an output inductor and an output capacitor, in which the capacitor has an ESL which forms an inductive voltage divider with the output inductor causing the square wave voltage ripple. The ESL cancel circuit may include first and second current sources and a resistor device…

INJECTION LOCKED PHASING FOR A PEAK-VALLEY MULTIPHASE REGULATOR

Granted: March 5, 2015
Application Number: 20150067358
A system and method capable of injection locking the phases of a peak-valley multiphase regulator includes comparing an output voltage error signal with a ramp control signal and providing a corresponding slope reset signal, using transitions of the slope reset signal to develop a equally spaced high side ramp signals and equally spaced low side ramp signals, and injecting a corresponding one of the high side signals and a corresponding one of the low side ramp signals into each of the…

SEMICONDUCTOR STRUCTURE FOR ENHANCED ESD PROTECTION

Granted: January 22, 2015
Application Number: 20150022921
A semiconductor structure for enhanced ESD protection is disclosed. The semiconductor structure includes a plurality of fingers, wherein each finger of the plurality of fingers includes a plurality of voltage clamps, and each voltage clamp of the plurality of voltage clamps includes at least a first well having a first conductivity type and a second well having a second conductivity type, and a connection between a well tie of the first well of a first voltage clamp of the plurality of…

Current Ramping During Multiphase Current Regulation

Granted: November 13, 2014
Application Number: 20140333270
Voltage regulators in a current share arrangement may provide a total current to a common load, and may be simultaneously turned on to ramp up member currents. Each voltage regulator may provide a respective member current in the current share configuration. A target current value may be determined from a cycle-averaged current value of the member currents and a voltage error value of the voltage regulator, and each member current may be ramped to the target current value instead of the…