Analog Devices Patente

First node signal-separation circuitry obtains first node electrical transmit signal (TX1) from a full-duplex electrical communication signal. First node transmit components convert TX1 to a first node optical transmit signal (OTX1) and send OTX1 over an optical link. Second node receive components receive OTX1 and convert it to a first node electrical transmit signal (TX1) at the second node. Second node signal-separation circuitry obtains a second node electrical transmit signal (TX2) from a full-duplex electrical communication signal of the second node. Second node transmit components convert TX2 to a second node optical transmit signal (OTX2) and send OTX2 over the optical link. First node receive components receive OTX2 from the optical link and convert it to TX2 at the first node. At each node the full-duplex electrical signal comprises a superposition of a locally transmitted electrical transmit signal and a counterpart electrical transmit signal received from the optical link.

Described herein are isolator devices designed to reduce cracking and mechanical stress despite the use of wire bonds made of hard materials (e.g., copper-based). The isolators employ thin film dielectric materials with high dielectric strength and permittivity underneath the top coil (electrode) to enhance the isolation of the device. However, these materials are susceptible to cracking. Described herein are designs in which the dielectric material is partially removed from the isolator. A dielectric layer may be kept in the region(s) where its large dielectric permittivity is particularly beneficial (e.g., near the edge of a coil) but may be removed from the region immediately underneath the bonding pad, where a large amount of pressure is applied during the bonding process. Optionally, a cushion layer is employed to absorb some of the energy produced during the bonding process.

A method of manufacturing a vertical inductor, the method comprising: forming a substrate, forming a bottom electrode, forming a dielectric layer, forming a magnetic core, forming insulation layer, forming a conductive loop structure by extending vertical interconnects through the insulation layer from a first side of the magnetic core to a second side of the magnetic core, electrically connecting the vertical interconnects to the bottom electrode on the second side of the magnetic core.

A method and circuit arrangement for voltage protection is disclosed. In certain embodiments, a controllable switch comprises a control terminal, a first channel terminal, and a second channel terminal, and arranged to be switched between an off-state and an on-state. In the on-state the controllable switch allows a current to flow between the first channel terminal and the second channel terminal. An overvoltage protection circuit is configured to determine a voltage difference between a first voltage of the first channel terminal and a second voltage of the second channel terminal. The overvoltage protection circuit also sets a control signal to a protection value to operate the controllable switch in the off-state in response to determining that the voltage difference is greater than or equal to a switch threshold.

The present disclosure relates to a DC-DC power converter and method of operation. The converter comprises a first converter circuit for controlling a first output current and a second converter circuit for controlling a second output current. The first converter comprises a first plurality of switches coupled to a first terminal of the DC-DC power converter and a first inductive impedance coupled to the first plurality of switches and a second terminal of the DC-DC power converter. The second converter circuit comprises a second plurality of switches coupled to the first terminal of the DC-DC power converter and a second inductive impedance coupled to the second plurality of switches the second terminal of the DC-DC power converter. The DC-DC power converter also comprises first and second capacitors, each cross-coupled between the first converter circuit and the second converter circuit.

A method and circuit arrangement for a solid state switch device is disclosed. In certain embodiment, a solid state switch device comprising a controllable switch comprising a control terminal, a first channel terminal, and a second channel terminal, and arranged to be switched between an off-state and an on-state, wherein in the on-state the switch allows a current to flow between the first channel terminal and the second channel terminal. The solid state switch device further comprising: a first compensation circuit configured to: generate a first boost current based on a voltage difference between the first channel terminal and the second channel terminal; and apply the first boost current to the control terminal to charge a switch capacitance of the controllable switch.

Aspects of the present disclosure include a detection system, a method, and/or a base node for providing the electrical energy to a plurality of edge nodes, transmitting a sensor interrogation signal to at least one of the plurality of edge nodes in the detection system, receiving, in response to the sensor interrogation signal, sensor information, send the sensor information to a predictor configured to: receive sensor training data, train an artificial intelligence engine using the sensor training data, identify an anomaly and an action associated with the anomaly based on providing the sensor information to the artificial intelligence engine, and provide the action, and performing the action provided by the predictor.

An inductive circuit includes a coupled inductor including a magnetic core including a first core rail, a second core rail, and multiple identical core legs between the first core rail and the second core rail, wherein the core legs include an identical gap; multiple identical inductive phase stages, wherein each inductive phase stage includes a core leg and an identical phase winding around the core leg, wherein each phase winding includes a first terminal connected to the input node and a second terminal connected to the output node; and an inductive linking stage identical to the multiple inductive phase stages, wherein a first terminal of a phase winding of the inductive linking stage is connected to the input node and a second terminal of the phase winding of the linking stage is connected to the linking inductance node.

Power modules with enhanced thermal conductivity are disclosed herein. In certain embodiments, a power module includes a circuit board, an inductor component attached to a first or top side of the circuit board, and a semiconductor die attached to a second or bottom side of the circuit board opposite the first side. The power module further includes a thermally conductive wrap at least partially around a dielectric body of the inductor component. The thermally conductive wrap serves to transfer heat from the semiconductor die to a cold plate or heat sink that can be attached to the inductor component opposite the circuit board.

Apparatus and methods for nonlinearity cancellation in electronic systems are disclosed. In certain embodiments, an electronic system includes two or more circuit channels that process a common input signal in parallel and that each include at least one instantiation of a circuit that behaves nonlinearly. Thus, the nonlinear circuit is replicated and included at least once in each circuit channel. Each of the circuit channels has an input scaling factor and an output scaling factor that can vary from one circuit channel to another. The output signals from the circuit channels after scaling are combined to generate a combined output signal. The input and output scaling factors are selected to cancel or reduce nonlinearities.

Surface temperatures for battery cells in a battery pack can be inferred or estimated using internal or core temperatures of the battery cell and a thermal model. The internal temperature may be generated using electrochemical impedance spectrometry (EIS). Delta values from the EIS estimations to the cell surface temperature may be generated based on a thermal model of the battery. The thermal model of the battery may be created using probe points on the surface of a test battery, such as thermocouples.

Described herein are software programmable isolated devices. The isolated device may be programmable in that some of the characteristics of the isolated device may be set based upon input provided by a user. The isolated device may allow the user to program the activation or deactivation of each channel independently of the activation and deactivation of the other channels. Additionally, or alternatively, the isolated device may allow the user to program the direction of transmission of each channel independently of the direction of transmission of the other channels. Additionally, or alternatively, the isolated device may allow a user to program the data rate at which each channel communicates independently of the data rates of the other channels. Additionally, or alternatively, the isolated device may allow a user to program the delay associated with each channel independently of the delays associated with the other channels.

There is provided methods and systems for balancing junction temperatures between at least two power switches of a multilevel converter. A junction temperature of each of the at least two power switches is received. A difference in junction temperature between the at least two power switches is determined. A ratio of operating time for which the multilevel converter operates using a first pulse width modulation, PWM, mode of a plurality of PWM modes is defined based on closed loop control in order to reduce the difference in junction temperature of the at least two power switches. Finally, a control signal is generated to operate the multilevel converter using the first PWM mode for the ratio of operating time.

Various techniques are described to control the rate of change of current (di/dt) and the rate of change of voltage (dV/dt) for power electronic switches with conventional gate drivers and a few additional components. By implementing these techniques, designers may achieve better control over the switching behavior, reduce losses, and improve the overall reliability and efficiency of their circuits. This is particularly important in applications such as power inverters, where high performance and reliability are important.

A measurement circuit including a power supply, a load output terminal connected to the power supply and connected to a system ground via a load, an amplifier comprising power terminals connected to the power supply, and an output terminal connected to the system ground via a measurement resistor, the amplifier is configured to supply current from the power supply to the load via the measurement resistor and the system ground producing a voltage across the measurement resistor that corresponds to the supply current through the load.

A full-wave active rectifier system, comprising: a full-wave active rectifier for generating a DC voltage output signal based on an AC voltage input signal. The full-wave active rectifier comprising first and second transistors which are controllable by a controller, and, third and fourth transistors which are controlled by the AC voltage input signal. The full-wave active rectifier system comprising: the controller coupled to the first transistor. The full-wave active rectifier system is configured to: when the first transistor is in an off-state, monitor a first voltage at a node shared by the AC voltage input signal and a first terminal of the first transistor; and sense a voltage transient in the first voltage caused by switching the first transistor between an on-state and the off-state. The controller is configured to: control, in response to sensing the voltage transient, a phase-angle at which the first transistor switches between the on-state and the off-state.

A current sensor system is provided where the self-resonant frequency of a current measurement coil, such as a Rogowski coil, may be modified. The current sensor system comprises a current measurement coil and a resonant frequency modification circuit. The resonant frequency modification circuit is configured to modify a resonant frequency of the current sensor system such that a combined resonant frequency of the current measurement coil and the resonant frequency modification circuit is different from a self-resonant frequency of the current measurement coil.

The present disclosure relates to capacitive sensing, for example for the purpose of non-contact voltage measurement. In the disclosure, an impedance that is dependent on the impedance of a capacitive sensing element is determinable by applying a known reference signal to a circuit comprising the capacitive sensing signal and measuring a resultant voltage. The resultant signal passes through a measurement circuit, such as one comprising a buffer and ADC, before being measured. The power supply of at least part of the measurement circuit is controlled in a predetermined way, for example based on the known reference signal.

A utility meter is provided. The utility meter comprises a metrology processor and an application processor. The metrology processor is configured to receive input current and voltage measurements from one or more sensors. The application processor is configured to receive the energy consumption data from the metrology processor and output the energy consumption data. Primary and secondary communication links are provided between the metrology processor and the application processor and configured to transmit the energy consumption data from the metrology processor to the application processor.

The present disclosure relates to a current measurement system and method that uses a rate of change of current sensor, such as a Rogowski Coil. The system comprises a rate of change of current sensor and a coupled measurement circuit. A temperature response of at least part of the signal processing circuitry is set so as to reduce or eliminate changes in the signal gain of the system caused by temperature changes.

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Fault monitoring systems and methods presented herein perform steps comprising, in response to a host device receiving a valid command, if no fault condition is present in a circuit, communicating an acknowledgement response to the host device. Whether a fault condition is present in the circuit may be determined by a monitoring circuit. If a fault condition is found, an error acknowledgement response that is different from the acknowledgement response may be communicated to the host. Contrariwise, if an invalid command is received from the host, no acknowledgement response and no error acknowledgement response are communicated to reduce unnecessary communication.

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Systems, devices, and methods related to antenna elements with perforations and augmentations are provided. An example patch antenna structure includes a first conductive patch on a first layer of the structure, where the first conductive patch includes one or more perforations at a periphery of a first side of the first conductive patch, and one or more extended conductive portions at a second side of the first conductive patch, the second side opposite the first side; a ground plane on a ground layer of the structure, the ground layer spaced apart from the first layer; and a first signal feed to couple a signal to the first conductive patch. In an example, an individual extended conductive portion of the one or more extended conductive portions may compensate a radiation pattern associated with a corresponding one of the one or more perforations.

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