Analog Devices Global

Analog Devices,inc.

University of Limerick

Patrick J Meehan

Thomas J Conway

Donal G O'Sullivan

Christopher Peter Hurrell

Karl Rinne

William Hunt

Eamon O'Malley

Michael Hennessy

Mark T Kelly

Adrian P Brokaw

David Thomson

Brian Anthony Moane

John Blake

Michael J Cusack

Aldrick S Limjoco

Aldrick Limjoco

George Francis Clernon

An integrated switching regulator device has a switching mode regulator comprising an input voltage source and a switching circuit coupled to the input voltage source configured to generate a pulsed voltage from the input voltage. A low pass filter is coupled to the switching regulator and is configured to filter the pulsed voltage to provide a regulated voltage to a load. The low pass filter comprises at least two LC stages, wherein the first LC stage comprises an air cored inductor and each subsequent LC stage comprises a non-air cored inductor. The switching circuit comprises two or more switching elements configurable to operate at a switching frequency of several megahertz.

Integrated switching regulator device using mixed-core inductors

A switched mode power supply converter comprises a circuit pulse matching circuit configured to negate output voltage disturbance or noise during switching operation of a power conversion. The current pulse matching circuit input is driven by, or from, a power converter switch node of the switched mode power supply converter. The current pulse matching circuit comprises a rate-of-voltage change detection circuit driven by the power converter switch node.

System and method for current pulse matching technique in a switched mode power converter

An integrated electronic component assembly can include an electrically-conductive structure comprising two or more electrically-conductive terminals accessible on an exterior of the integrated electronic component assembly, a first component attachment region for a first component within the integrated electronic component assembly, and a second component attachment region for a second component within the integrated electronic component assembly. The integrated electronic component assembly can include an electrically-conductive magnetically-permeable shield coupled to or defined by the electrically-conductive structure, the electrically-conductive magnetically-permeable shield located between the first and second component attachment regions, including a portion extending in a direction out of a plane defined by the first and second component attachment regions, to suppress magnetic coupling between the first and second components.

Vertical magnetic barrier for integrated electronic module and related methods

A circuit and method to filter a signal is provided. The circuit includes a notch filter circuit to receive an input signal and first and second tuning signals and to provide an output signal. The notch filter circuit has an input-output frequency response that includes a stopband region. The stopband region has a center frequency and has an attenuation level that is based at least on a tuning signal. The tunable filter circuit further includes a tuning circuit operable in at least two modes to generate the tuning signal. The at least two modes includes a tuning mode and a filtering mode. The tuning circuit generates the tuning signal such that the attenuation level of the stopband region is greater in the filtering mode than in the tuning mode.

Resonance detection and filtering circuitry

A signal processing apparatus that includes a circuit in which a signal processing function is performed during a first time period, the signal processing apparatus including or being associated with a switch or a filter in a power supply to the signal processing apparatus so as to disconnect the signal processing apparatus from the power supply or to filter the power supply during a second time period that is coincident with at least part of the first time period.

Method of improving noise immunity in a signal processing apparatus, and a signal processing apparatus having improved noise immunity

A switching regulator IC contains both switching regulator circuitry and an inductor and a capacitor connected in parallel to form a resonant circuit having an associated notch filter frequency response arranged such that, when connected to receive the regulated output voltage, the resonant circuit attenuates the ripple component. This is accomplished by matching the resonant notch to the ripple's fundamental frequency, either manually or automatically. In addition, the resonant circuit's inductor and capacitor can act in concert with decoupling capacitors coupled to the load to form a low pass filter which attenuates harmonics of the ripple's fundamental frequency.

Switching regulator with integrated resonant circuit for ripple filtering

A control circuit (,) for controlling a FET (,) for outputting a 3.3 volt or a regulated 1.5 volt output to an AGP bus on a PC motherboard in response to a TYPEDET signal being applied to a control terminal (,) of the control circuit (,) through an input (,) of a voltage divider circuit (,). The TYPEDET signal is received from a video card receiving slot and indicates the type of video card in the slot of the motherboard. An amplifier (,) outputs a control signal to the gate of the FET (,) for either disabling the FET (,), or enabling the FET (,) to output the 1.5 volt or the 3.3 volt outputs. A decoding circuit (,) decodes the state of the control terminal (,) and controls the amplifier (,) to disable the FET (,) during power up. When the TYPEDET signal of zero volts, the FET (,) is operated to output the 1.5 regulated voltage output. When the TYPEDET signal is floating, the FET (,) outputs the 3.3 source voltage. When the voltage on the control terminal (,) is not connected to the voltage divider circuit (,), the FET (,) is operated to output the 1.5 regulated voltage.

Control circuit for controlling a semi-conductor switch for selectively outputting an output voltage at two voltage levels

An IC monitoring chip (,) for remotely monitoring the output of a thermal diode (,) formed in the substrate of a CPU (,) for monitoring the temperature of a thermal plate (,) of the CPU (,) comprises a signal conditioning circuit (,) which relays the output from the diode (,) to an analog-to-digital converter (,), which in turns outputs a two's compliment signal to an adder (,). The adder (,) adds the two's compliment signal to a temperature offset value stored in a temperature offset register (,), which compensates for the temperature difference between the diode (,) and the thermal plate (,). Comparators (,) and (,) compare the output from the adder (,) with upper and lower predetermined temperature limits in upper and lower limit registers (,) and (,) for determining the temperature of the thermal plate (,). The temperature offset value is stored in ROM (,) of the computer (,) and is written to the register (,) each time the computer (,) is powered up. The IC chip (,) operates independently of the CPU (,).

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Limerick, Ireland

Patrick J Meehan