Intersil Patent Grants

Systems and methods for lead frame locking design features

Granted: August 8, 2017
Patent Number: 9728491
Systems and methods for lead frame locking design features are provided. In one embodiment, a method comprises: fabricating a lead frame for a chip package, the lead frame having a paddle comprising a step-out bottom locking feature profile across at least a first segment of an edge of the paddle that provides an interface with a mold compound; etching the paddle to have at least a second segment of the edge having either an extended-step-out bottom locking feature profile or an…

Sensing a switching-power-supply phase current

Granted: August 1, 2017
Patent Number: 9720429
In an embodiment, a coupled-inductor structure includes first and second windings. The first winding is configured to conduct a phase current, has a first node configured for coupling to a phase node of a power supply, and has a second node configured for coupling to an output node of the power supply and to a first node of a sense impedance that is configured to generate a sense signal representative of the phase current. And the second winding is configured for magnetic coupling with…

Wafer level optoelectronic device packages with crosstalk barriers and methods for making the same

Granted: August 1, 2017
Patent Number: 9721837
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…

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: August 1, 2017
Patent Number: 9722490
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…

Power supply module with electromagnetic-interference (EMI) shielding, cooling, or both shielding and cooling, along two or more sides

Granted: August 1, 2017
Patent Number: 9723766
An embodiment of a power-supply module includes a package having sides, a first power-supply component disposed in the package, and an electromagnetic-interference (EMI) shield disposed adjacent to two sides of the package. For example, such a module may include component-mounting platforms (e.g., a lead frame or printed circuit board) on the top and bottom sides of the module, and these platforms may provide a level of EMI shielding specified for a particular application. Consequently,…

System and method for determining adapter current limit

Granted: July 25, 2017
Patent Number: 9715244
An electronic device that determines an adapter current limit for a power adapter, including a regulator, a voltage comparator, and a controller. The regulator regulates an adapter output current level to prevent it from exceeding the adapter current limit, and provides a regulation signal during regulation. The voltage comparator provides an under-voltage signal when adapter output voltage level falls below a low voltage threshold. The controller initially sets the adapter current limit…

Circuit module such as a high-density lead frame array (HDA) power module, and method of making same

Granted: July 25, 2017
Patent Number: 9717146
A circuit module includes a plurality of electronic components and a single-layer conductive package substrate. The single-layer conductive package substrate is adapted to physically support and electrically interconnect the electronic components. The substrate has a peripheral portion and an interior portion. The peripheral portion includes a plurality of peripheral contact pads coupled to corresponding electronic components. The interior portion includes a plurality of floating contact…

Sensing a switching-power-supply phase current

Granted: July 4, 2017
Patent Number: 9696739
In an embodiment, a coupled-inductor structure includes first and second windings. The first winding is configured to conduct a phase current, has a first node configured for coupling to a phase node of a power supply, and has a second node configured for coupling to an output node of the power supply and to a first node of a sense impedance that is configured to generate a sense signal representative of the phase current. And the second winding is configured for magnetic coupling with…

Adjusting a current threshold of a power supply in response to a portion of a current-pulse period

Granted: June 27, 2017
Patent Number: 9692297
An embodiment of a power-supply controller includes switching circuitry and an adjuster circuit. The switching circuitry is configured to cause a charging current to flow until the charging current has a predetermined relationship to a threshold, and to cause a discharging current to flow after the charging current. The adjuster circuit is configured to adjust the threshold in response to at least one of a charging period during which the charging current flows and a discharging period…

Digital voltage compensation for power supply integrated circuits

Granted: June 20, 2017
Patent Number: 9685861
Systems and methods for digital voltage compensation in a power supply integrated circuit are provided. In at least one embodiment, a method includes receiving a digital voltage code, the digital voltage code corresponding to an output voltage value; setting an output count on a first counter to change from a present first digital count corresponding to a present voltage code value toward a target first digital count corresponding to a new voltage code value; and setting a second count…

Systems and methods for optical proximity detection with multiple field of views

Granted: June 6, 2017
Patent Number: 9671495
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.…

Active pulse positioning modulator

Granted: May 30, 2017
Patent Number: RE46419
An adaptive pulse positioning modulator including a sense circuit which provides a compensation signal indicative of output voltage error, a filter circuit having an input receiving the compensation signal and an output providing an adjust signal, a leading ramp circuit which provides a repetitive first leading edge ramp signal having a slope which is adjusted by the adjust signal, a comparator circuit which provides a first start trigger signal when the first leading edge ramp signal…

Current synthesizer correction

Granted: May 30, 2017
Patent Number: 9667260
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…

Scanning projectors that use multiple pulses per pixel period to reduce color shifts, and methods and controllers for use therewith

Granted: May 16, 2017
Patent Number: 9654747
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…

System and method for maintaining a constant output voltage ripple in a buck converter in discontinuous conduction mode

Granted: May 9, 2017
Patent Number: 9647558
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…

Optical sensors that compensate for ambient light and interference light

Granted: May 2, 2017
Patent Number: 9642215
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.…

Solder flow-impeding plug on a lead frame

Granted: April 18, 2017
Patent Number: 9627297
Embodiments described herein relate to a packaged component including a lead frame and a non-conductive plug disposed between two or more adjacent sections of the lead frame. The plug is composed of a non-conductive material functions to impede the flow of solder along edges of the two or more adjacent sections during second level solder reflow events that occur after encapsulation of the packaged component. The plug includes a main portion disposed within a space between the two or more…

Packaged circuit with a lead frame and laminate substrate

Granted: April 4, 2017
Patent Number: 9613889
Embodiments of the subject application provide for a circuit comprising: a lead frame having a first plurality of exposed terminals, the lead frame defining a plane; a laminate substrate in the plane defined by the lead frame, adjacent to the lead frame, and electrically coupled to the lead frame, the laminate substrate having a first surface including a second plurality of exposed terminals and a second surface opposite the first surface; a first one or more dies mounted on the lead…

Hysteretic current mode buck-boost control architecture

Granted: April 4, 2017
Patent Number: 9614380
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…

Stacked inductor-electronic package assembly and technique for manufacturing same

Granted: March 28, 2017
Patent Number: 9607917
An embodiment of a circuit includes a circuit module and an inductor disposed over and electrically coupled to the module. Disposing the inductor over the module may reduce the area occupied by the circuit as compared to a circuit where the inductor is disposed adjacent to the module, or to a circuit where the inductor is disposed in the module adjacent to other components of the module. Furthermore, disposing the inductor outside of the module may allow one to install or replace the…