Advanced Charging Technologies, LLC

Treehouse Design, Inc.

Glenn Noufer

Randall L Sandusky

Neaz E Farooqi

Michael H Freeman

Mitchael C Freeman

Andrea Baschirotto

Robert Dieter

Piero Malcovati

Jim Devoy

Silvia Jaeckel

Marco Grassi

Madison Hayes Yarbro Freeman

W J “Jim” Weaver, Jr

Jay E Cormier

Jim Sesters

W J Weaver, Jr

Wj “Jim” Weaver, Jr

Curtis Dicke

An electrical circuit for providing electrical power for use in powering electronic devices, such as monitors, televisions, white goods, data centers, and telecom circuit boards, is described herein. The electrical circuit includes a voltage reduction circuit cell that includes a first capacitor, a second capacitor, a switching circuit, and a hold capacitor. The switching circuit includes a plurality of switching devices that are coupled to the first and the second capacitors for delivering power from an input terminal to an output terminal. The plurality of switching devices includes at least two switching devices that are coupled to ground. The voltage reduction circuit cell also includes a controller for operating the switching circuit in a plurality of operational modes to deliver an output power signal at a desired voltage level.

Electrical circuit for delivering power to consumer electronic devices

A phase locked loop system has a voltage-controlled variable-load ring oscillator (VLCO) that operates in a frequency band determined by a selected load on each stage of the ring oscillator. Each stage of the VLCO has multiple load selection transistors, each coupled to a load capacitor. Apparatus is provided for driving the load selection transistors according to a load configuration; and apparatus is provided for determining an operating load configuration such that a period of a divided reference signal approximately matches a period of a divided VLCO signal with the VLCO control voltage input clamped to a reference voltage. Once the load configuration is set, the loop is allowed to lock. In a particular embodiment, devices are provided for slowly tweaking the VLCO load to help keep the VLCO operating near an optimum control voltage despite drift of circuit parameters with temperature or time.

System and method for fast-capture multi-gain phase lock loop

An electrical circuit for providing electrical power for use in powering electronic devices is described herein. The electrical circuit includes a primary power circuit and a secondary power circuit. The primary power circuit receives an alternating current (AC) input power signal from an electrical power source and generates an intermediate direct current (DC) power signal. The intermediate DC power signal is generated at a first voltage level that is less than a voltage level of the AC input power signal. The secondary power circuit receives the intermediate DC power signal from the primary power circuit and delivers an output DC power signal to an electronic device. The output DC power signal is delivered at an output voltage level that is less than the first voltage level of the intermediate DC power signal.

An electrical circuit for providing electrical power for use in powering electronic devices, such as monitors, televisions, white goods, data centers, and telecom circuit boards, is described herein. The electrical circuit includes an input terminal configured to receive an input power signal, an output terminal configured to provide an output power signal, and a forward converter coupled to the input and output terminals. The forward converter includes a transformer, and a primary side regulation circuit coupled to a primary side of the transformer. The primary side regulation circuit includes a switching device coupled to the primary side, a current sense circuit configured to sense a current level on the primary side, and a controller configured to generate a pulse-width modulated control signal delivered to the switching device as a function of the sensed current level to regulate the transformer to deliver the output power signal at a desired voltage level.

An electrical circuit for providing electrical power for use in powering electronic devices, such as monitors, televisions, white goods, data centers, and telecom circuit boards, is described herein. The electrical circuit includes an input terminal configured to receive an input power signal, an output terminal configured to provide an output power signal, and a plurality of voltage reduction circuit cells coupled between the input terminal and the output terminal. Each of the voltage reduction circuit cells includes a pair of flyback capacitors, a switching circuit, and a hold capacitor. The switching device is configured to operate the corresponding voltage reduction circuit cell at a charging phase and at a discharging phase. The plurality of voltage reduction circuit cells are configured to deliver the output power signal having a voltage level that is less than the voltage level of the input power signal.

A digital level shifter adapted to shift an input signal from switching in a low voltage range, to an output switching in a high voltage range has a glitch generator configured to generate pulses at rising and falling transitions of the input signal. Glitch generator output triggers a multiple-level current source to a high current mode, operating in a low current mode at other times. The current source feeds a differential pair of high voltage transistors with a first transistor of the pair having a gate coupled to the input signal and a second transistor of the pair having a gate coupled to a complement of the input signal. An active load and buffer circuit receives current from the differential pair and drives the output accordingly.

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Manitou Springs, CO, United States of America

Glenn Noufer