Fairchild Semiconductor Corporation

Kinetic Technologies

Integration Associates Incorporated

Kinetic Technologies International Holdings LP

Intersil Americas Inc.

Elantec Semiconductor, Inc.

Leadis Technology, Inc.

Advanced Coronary Intervention

Brian Ben North

William Robert Pelletier

Cary L Delano

Jan Nilsson

Stephen E Parks

Wayne Thomas Holcombe

Barry Harvey

Dong Zheng

Robert L Lyle, Jr

Timothy Alan Dhuyvetter

Pierre R Irissou

Sofjan Goenawan

Arun Jayaraman

Karl Richard Volk

Bart A Holmberg

Stephen F Colaco

Andreas Hadjicostis

Douglas S Smith

A system for managing power on distributed devices may include a first device having a master logic and a second device having a slave logic. The master logic may enable the first device to communicate with multiple devices having the slave logic on one or more channels. The slave logic may enable the second device having the slave logic to communicate with the first device and to communicate with a third device having the slave logic. The slave logic may enable the multiple devices having the slave logic to manage operations of the distributed devices.

Systems and methods for managing communication between devices

A system for serial communication may include a first device and a plurality of devices on a series connection. The first device may have a master circuit and the plurality devices may have a slave circuit. The master circuit may enable the first device to communicate with the plurality devices having the slave circuit on the series connection. The master circuit may enable the first device to send a command frame on the series connection. The command frame may include an execution mode command and a plurality of commands. The second devices may execute the commands within the command frame at or after the end of the command frame based on the execution mode command indicating a synchronous mode of command execution; and may execute the commands within the command frame at the ends of individual ones of the commands based on the execution mode command indicating a non-synchronous mode of command execution.

Systems and methods for communication on a series connection

Adaptive on-time switching voltage regulator circuits and methods therefor provided. In some embodiments, a voltage regulator comprises: a switching circuit configured to generate a switching signal at a switching node according to a pulse-width modulated (PWM) signal; a phase-lock loop (PLL) configured to lock the PWM signal to a clock reference signal, the PLL comprising: a PWM signal generator configured to generate the PWM signal according to an error signal, and a phase detector configured to generate the error signal based on the PWM signal and the clock reference signal.

Switching voltage regulators with phase-lock loops and lock range extension

A system that uses pulse-based communication may include a first device and a plurality of devices on a series connection. The first device may have a master circuit and the plurality devices may have a slave circuit. The master circuit may enable the first device to communicate with the plurality devices having the slave circuit on the series connection. The master circuit may enable the first device to send a pulse string including one or more pulses to the plurality devices. The slave circuit may enable the plurality devices to receive the pulse string from a previous device on the series connection and change the pulse string. The slave circuit may enable the plurality devices to send the pulse string to a next device on the series connection. Each of the plurality devices may determine its address in the series connection based on the pulse string it receives.

Systems and methods for pulse-based communication

A switch-mode DC converter configured to generate a converted voltage from an input voltage is provided. The switch-mode DC converter includes an inductor configured to store energy, and a switch coupled with the inductor at a switching node, wherein the switch is configurable to be turned on or off to control the discharging of the energy stored at the inductor to an output node of the converter, wherein the output node is configured to provide the converted voltage. The switch-mode DC converter also includes a circuit configured to control a timing of turning-off of the switch based on a voltage difference between the switch, wherein a measurement of the voltage difference is adjusted based on a voltage at the switching node.

DC-DC converter with improved discontinuous conduction mode efficiency

This document discusses, among other things, a voltage regulator having a plurality of switching devices, coupled in parallel, and configured to selectively provide a variable available drive current using a comparison of a regulated Dc output voltage to at least one reference voltage.

Fast recovery voltage regulator

A digital control mechanism is provided to maintain current matching of a plurality of LED devices where the conventional supply voltage may be insufficient to achieve the threshold working current.

System and method for uniform control of current regulated outputs over wide voltage ranges

This document discusses, among other things, a device for providing a DC output voltage, including a first output voltage and a second output voltage, from an input voltage. The device can include a first voltage regulator configured to provide the first output voltage when the input voltage is below a threshold voltage, and a charge pump configured to provide the second output voltage from the first output voltage in a two-state mode when the input voltage is below the threshold voltage, and to provide the first output voltage and the second output voltage in a three-state mode when the input voltage is above the threshold voltage.

Selectively activated three-state charge pump

This document discusses, among other things, a charge pump having a plurality of switching devices, coupled in parallel, and configured to selectively provide a variable available drive current for a capacitor using a comparison of an output voltage to at least one reference voltage.

Reduced current charge pump

An audio amplifier such as for driving headphones. The amplifier includes multiple amplifier devices coupled in parallel. Both a bias generator and a volume control are responsive to a user setting. Under low output signal conditions, one or more of the amplifier devices are disabled in response to the user setting. Disabled amplifier devices do not consume output bias current. Thus the audio amplifier has reduced power consumption, and the system has longer battery life.

Volume-based adaptive biasing

An apparatus and method for controlling the operation of a utility device, such as a cold cathode fluorescent lamp that is powered in accordance with a pulse width modulation (PWM) signal, includes an analog sensor which monitors the utility device to derive an output signal representative of the PWM signal. An integrating analog-to-digital converter (ADC), which is coupled to the sensor and has its operation synchronized with an integral multiple of the period of the PWM signal, produces an output representative of an average of the output of the utility device.

Digitally synchronized integrator for noise rejection in system using PWM dimming signals to control brightness of cold cathode fluorescent lamp for backlighting liquid crystal display

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Santa Clara, CA, United States of America

Brian Ben North