305 results about "Galvanic isolation" patented technology

The invention relates to microwave-free sensor technology with NV centers in diamond. In contrast to the prior art, the intensity of the pump radiation is not PWM-modulated, but monofrequency and sinusoidally modulated. Further measures, such as the use of semiconductor-based pump radiation sources and operation with an offset, prevent the formation of harmonics in the temporal intensity profile of the pump radiation irradiating the NV centers in the sensor element. This allows the sensor system to use the phase shift to determine measured values ​​of external physical parameters such as magnetic flux density, acceleration, temperature, etc., within a recognized and disclosed frequency range of the intensity modulation of the pump radiation, thereby minimizing the influence of noise from the pump radiation source. The galvanic isolation does not need to be compromised by cables from additional sensors.

A converter system, e.g., for vehicle-to-vehicle charging, includes galvanically-isolated modular first and second converters having the same maximum voltage rating, a direct current (DC) voltage bus interconnecting the converters, and an electronic controller. An input voltage to the DC bus is converted into an output voltage via switching control signals to the modular converters. The system's voltage rating may equal the maximum of the input and / or output voltage, or it may equal the maximum input voltage and be about 50-percent of the maximum output voltage. The maximum input and output voltages may be equal. When the voltage rating is about 50-percent of the maximum input voltage, capacitors may be connected in parallel with the modular converters on an input side thereof. Switching circuits may be connected to the bus to control the conversion of the input voltage via switching control signals.

A DC-DC converter includes a primary-side control-circuit having an oscillator driving a transformer in response to assertion of a PWM-signal to transmit power from the primary to the secondary and ceasing in response to deassertion of the PWM-signal, and a receiver demodulator circuit receiving / demodulating a feedback signal sent from the secondary to the primary by comparing an instantaneous value of an envelope indicative of voltages at the primary-coil to an average-value of the envelope to produce a reset-signal. A PWM circuit asserts the PWM-signal in response to a set-signal and deasserts the PWM-signal in response to assertion of the reset-signal. A secondary-side control-circuit rectifies the received power, asserts an intermediate feedback-signal if feedback indicative of the output voltage is greater than a reference-voltage, and connects a capacitance between the secondary and ground in response to assertion of the intermediate feedback-signal to modulate and send the feedback to the primary.

This document describes, among other things, a vehicle power system that includes a traction battery, a six-phase inverter divided into two groups of six switches, a six-phase motor, and a pair of switches. In drive mode, the switches configure the inverter to connect the traction battery and the motor. In plug-in mode, the system reconfigures so that one group of switches connects an AC source to the motor, while the other group connects the motor to the traction battery.

A microelectronic device including an isolation device with a stabilized dielectric. The isolation device includes a lower isolation element, an upper isolation element, and an inorganic dielectric plateau between the lower isolation element and the upper isolation element. The dielectric sidewall of the inorganic dielectric plateau is stabilized in a nitrogen containing plasma which forms a SiOxNy surface on the dielectric sidewall of the inorganic dielectric plateau. The SiOxNy surface on the dielectric sidewall of the inorganic dielectric plateau reduces ingress of moisture into the dielectric stack of the inorganic dielectric plateau.

An electric circuit for a high-voltage network of a vehicle. the high-voltage network includes at least two electrical energy stores. The electric circuit includes a first and second connection points, which are configured for electrical connection to a consumer (19) and / or a charger (21). A first switching unit is arranged between a first pole connector and the first connection point. A second switching unit is arranged between a second pole connector and the second connection point. A third switching unit is arranged between the first connection point and a third pole connector, and a fourth switching unit is arranged between the second connection point and a fourth pole connector. The first switching unit and / or the second switching unit are designed to be galvanically isolating in an electrically disconnecting state, and the third and fourth switching units are embodied as semiconductor components.

The invention relates to microwave-free sensor technology with NV centers in diamond. In contrast to the prior art, the intensity of the pump radiation is not PWM-modulated, but monofrequency and sinusoidally modulated. Further measures, such as the use of semiconductor-based pump radiation sources and operation with an offset, prevent the formation of harmonics in the temporal intensity profile of the pump radiation irradiating the NV centers in the sensor element. This allows the sensor system to use the phase shift to determine measured values ​​of external physical parameters such as magnetic flux density, acceleration, temperature, etc., within a recognized and disclosed frequency range of the intensity modulation of the pump radiation, thereby minimizing the influence of noise from the pump radiation source. The galvanic isolation does not need to be compromised by cables from additional sensors.

An apparatus for transferring power includes a first power converter coupled to a first power interface, an isolation transformer having a first transformer coil coupled to the first power converter and a second transformer coil magnetically coupled to and galvanically isolated from the first transformer coil, a second power converter coupled to the second coil of the isolation transformer and to a second power interface, a third transformer coil magnetically coupled to and galvanically isolated from the first transformer coil and magnetically coupled to the second transformer coil, and a third power interface for connecting the third transformer coil to a wireless power transmission (WPT) resonator.

A system including circuitry to communicate data across an isolation barrier of a switch driver circuit. For switch driver circuits with galvanic isolation, the circuitry of this disclosure uses the unavoidable common mode voltages caused by the coupling capacitances of the data transfer circuit to evaluate the common mode voltage characteristics, such as the slew rate of a switching event. The switch driver circuit of this disclosure may include a common mode voltage detector to detect and measure features of the unavoidable common mode voltage during a switching event, such as voltage amplitude and slew rate. The common mode voltage detector may couple to a communication interface that provides the common mode voltage information to a controller for the switch driver circuit. In some examples, based on the received information, the controller may adjust the operation of the switching circuit.

A measuring device for has a housing, a measuring circuit board, and a communication circuit board. The measuring circuit board has a voltage connection, a voltage divider, a CT connection for connecting an external current transformer, a measuring chip connected to the voltage divider and the CT connection for determining electrical quantities and outputting as measurement data to a first part of a plug connector. The communication circuit board is connected to a second part of the plug connector, which together with the first part connects the communication circuit board and the measuring circuit board, a data communication chip connected to the second part and electrically isolated to receive the measurement data from the measuring chip, where a galvanic isolation between the measuring chip and the data communication chip is provided on the communication circuit board, a data connection connected to the data communication chip and a user interface.

Sensor assembly (26) for a switchgear connector (1), the sensor assembly (26) comprising: a high voltage side (28) facing the switchgear; a low voltage side (30); an isolation barrier (32) that provides a galvanic isolation between the high voltage side (28) and the low voltage side (30); a sensor device (34) configured to measure at least one physical quantity and a sensor data output device representative of the at least one physical quantity, the sensor device (34) being arranged on the high voltage side (28); a data interface (36) arranged on the low voltage side (30) and configured to provide for the sensor device data (40) to be accessible from outside of the sensor assembly (26); and a transmission path (42) which is configured to transfer sensor device data (40) between the sensor device (34) and the output interface (36); wherein the transmission path (42) comprises a wireless section which extends across the isolation barrier (32).

Circuits, devices, and systems incorporating a low-voltage common-mode transient immunity (CMTI) test. The CMTI test of this disclosure may be used in a variety of applications, such as a data transmission circuit configured to communicate across galvanic isolation. A differential circuit may include two signal paths. For robust common-mode transient rejection, the first signal path should be the same as the second signal path. Differences in resistance, inductance, and capacitance between the two signal paths may result in common-mode noise being measured at the output terminals as a differential signal. Devices according to the techniques of this disclosure are configured to include a test mode to perform a low-voltage test that outputs a measurement of the CMTI at any stage of production or field deployment.

Circuits, devices and systems that include a low voltage test for common mode transient immunity (CMTI). The CMTI test of this disclosure may be used in a variety of applications, such as a data transmission circuit configured to communicate across galvanic isolation. A differential circuit may include two signal paths. For robust common mode transient rejection, the first signal path should be the same as the second signal path. Differences in the resistance, inductance, and capacitance between the two signal paths may result in common mode noise being measured as a differential signal at the output terminals. Devices according to the techniques of this disclosure are configured to enter a test mode to conduct a low voltage test that outputs a measurement of CMTI at any phase of production or field use.

In some examples, a method comprises communicating first data between a first circuit and a second circuit via a differential communication channel across a galvanic isolation barrier within a circuit package, wherein the first data is coded via a first coding technique that comprises ON-OFF shift Keying (OOK) with a differential carrier signal. The method also includes communicating second data between the first circuit and the second circuit via the differential communication channel across the galvanic isolation barrier within the circuit package, wherein the second data is coded via a second coding technique comprises differential pulse coding.

In some examples, a method comprises communicating first data between a first circuit and a second circuit via a differential communication channel across a galvanic isolation barrier within a circuit package, wherein the first data is coded via a first coding technique that comprises ON-OFF shift Keying (OOK) with a differential carrier signal. The method also includes communicating second data between the first circuit and the second circuit via the differential communication channel across the galvanic isolation barrier within the circuit package, wherein the second data is coded via a second coding technique comprises differential pulse coding.

Aspects of the present disclosure include systems, structures, circuits, and methods providing integrated circuit (IC) packages or modules having a transformer with first and second spiral coils disposed on or adjacent to a substrate, each including one or more coil portions on one or multiple levels and having varying distances to an aperture or coil-origin region. A portion of a soft ferromagnetic core of the transformer can pass through the aperture or be adjacent to the coil origin region. The IC packages and modules may include various types of circuits; in some examples, IC packages or modules may include a galvanically isolated gate driver or other high voltage circuit.

A modular, multiport power conversion system includes a central transformer with a plurality of windings inductively connected to the central transformer. The plurality of windings are connected to ports able to connect to both AC and DC-devices, including both power sources and power consuming nodes. Each port is able to be selectively galvanically isolated, such that a controller is able to determine from which ports power is drawn and / or to which ports power is transferred. The system is operable to use zero voltage switching (ZVS) and / or zero current switching (ZCS) for each port to reduce power loss and increase efficiency, especially for high frequency embodiments.

A high power (HP) generator includes a plurality of low power (LP) generators, a coupling in which the plurality of LP generators is electrically connected, and a control unit. During operation, at least in some states of the HP generator, a coupling-value at an output of the coupling is higher than an LP-generator-value at an output of one of the plurality of LP generators. The control unit is configured to select a respective contribution of each of the plurality of LP generators in order to generate a rise and / or a decay of a pulse at the output of the coupling, in a sequenced way through the plurality of LP generators. The control unit is further configured to select the respective contribution of each of the plurality of LP generators in a galvanically isolated way, via a fiber optic connection or a magnetically coupling.

Systems and apparatus for enabling efficient energy harvesting are disclosed. A power conversion apparatus includes at least first and second inductors, a rectifier, a load, and at least first and second energy storage capacitors. The first inductor is galvanically isolated from the second inductor, and each of the first inductor and the second inductor is an output inductor of the power conversion device, and the rectifier is configured to charge at least the first energy storage capacitor and the second energy storage capacitor. Each of the at least first energy storage capacitor and the second energy storage capacitor is coupled to a load, and an interconnection of the at least first energy storage capacitor and the second energy storage capacitor is switched between at least one of an electrical series connection to an electrical parallel connection and an electrical parallel connection to an electrical series connection.

Aspects of the present disclosure include systems, structures, circuits, and methods providing pin-coupled transformers and / or pin-coupled coil structures. A pin-coupled coil structure can include first and second substrates, each having a plurality of conductive traces. The conductive traces of the substrates are connected by conductive pins, forming one or more pin-coupled coil structures. Two pin-coupled coils structure can be configured around a transformer core forming a pin-coupled transformer structure. The pin-coupled transformer structure can be included in integrated circuit (chip) packages or modules. The packages and modules may include various types of circuits; in some examples, chip packages or modules may include a galvanically isolated gate driver or other high voltage circuit.

A power conversion system (1) comprises a rectifier circuit (11) for converting an AC voltage to a distribution bus voltage; a solid state transformer, SST, (30) having an input side DC link (20), an internal medium frequency AC link (502), and an output side DC link (535 ), the SST (30) being configured for converting between the distribution bus voltage on the input side (501) and a DC target voltage on the output side (503), the SST (30) including at least one medium frequency transformer, MFT (511), in the AC link (502) for galvanic isolation, wherein the SST (30) includes multiple solid state transformer, SST, cells interconnected on the input side (501), the interconnection including a parallel connection, a series connection, or a combination thereof.

Semiconductor package comprising an input side containing input pins, an output side containing high-voltage pins, an isolation structure that galvanically isolates the input side from the output side, an input driver mounted on the input side and electrically connected to the input pins, a first and a second power transistor mounted on the output side, each having a first load terminal electrically connected to the high-voltage pins, an output driver communicatively coupled to the input driver via the isolation structure and electrically connected to the gate terminals of the first and second power transistors, and one or more electrically conductive structures that form a direct electrical connection between the load terminals of the first and second power transistors.wherein the output driver is mounted on one or more electrically conductive structures.

The utility model discloses a multichannel isolation type current and voltage signal processing board card comprising a board card main body, and the board card main body is provided with a plurality of signal input channels, a signal isolation module, a signal processing module, a microprocessor and a signal output interface. Each signal input channel comprises a current input port and a voltage input port, an isolation unit of the signal isolation module comprises a current isolation circuit and a voltage isolation circuit, and isolation input of multichannel signals is achieved. The signal processing module carries out amplification, analog-to-digital conversion and filtering processing on the isolated signals, the microprocessor carries out operation processing on the signals, and the signal output interface outputs the processed signals. According to the utility model, inter-channel signal interference and external electromagnetic interference are effectively prevented, the signal acquisition precision and the anti-interference capability of the board card are improved, and the connection requirements of various devices are met.

The utility model discloses a voltage and current isolation sampling circuit, which comprises a current isolation sampling circuit and a voltage isolation sampling circuit, and is characterized in that a current sampling end of the current isolation sampling circuit is connected in series in a circuit bus to be sampled; a current sampling output end of the current isolation sampling circuit is connected with a signal acquisition port of the central processing unit; the voltage sampling end of the voltage isolation sampling circuit is connected with voltage needing to be sampled in a circuit to be sampled, and the voltage sampling signal output end of the voltage isolation sampling circuit is connected with the signal acquisition port of the central processing unit. According to the utility model, the current isolation sampling end and the output sampling signal end are respectively connected with current in a sampled circuit and a signal acquisition port of the central processor, and parameters of circuit components are reasonably set, so that isolated acquisition of current and voltage and high integration precision are realized.

A radio frequency (RF) integrated gate driver includes a galvanically-isolated (GI) waveguide and an RF rectifier. The GI waveguide is configured to receive an RF signal from an RF source and to generate a rectifier input signal based on the RF signal. The RF rectifier is configured to receive the rectifier input signal from the GI waveguide and to generate, based on the rectifier input signal, a rectifier output signal to drive a gate of a power switch device.

The present invention relates to a charging system (1) having at least one DC power connector (2, 3) and at least one AC power connector (8) and a battery power connector (6), wherein the battery power connector (6) is capable of being connected to a battery (7), particularly a vehicle high-voltage battery (7), wherein at least one AC power connector (8) is connected to a rectifier (10), wherein a first DC voltage converter (11) is present. Electrical energy or current can be distributed in a highly efficient and optimized manner by means of a first DC voltage converter (11) connected to the DC side of a rectifier (10), wherein the first DC voltage converter (11) is configured as a boost / buck converter, wherein a current isolation element (12) is connected to the first DC voltage converter (11) and a battery power connector (6), wherein at least one DC power connector (2, 3) is connected to the rectifier (10) and the first DC voltage converter (11) via a first switch group (S1a), and is connected to the first DC voltage converter (11) and the current isolation element (12) via a second switch group (S1b).

A system includes an inverter including: a first galvanic isolator separating a low voltage area from a high voltage area, the first galvanic isolator having a first galvanic isolator output path; a second galvanic isolator having a second galvanic isolator output path; an amplifier connected to the first galvanic isolator via the first galvanic isolator output path, and connected to the second galvanic isolator via the second galvanic isolator output path, the amplifier having a first amplifier output path and a second amplifier output path; a comparator connected to the amplifier via the first amplifier output path and the second amplifier output path, the comparator having a first comparator output path and a second comparator output path; and a pulse reshape and envelope detector connected to the comparator via the first comparator output path and the second comparator output path.

The invention discloses a voltage converter arrangement for galvanically isolated power transmission between a three-phase alternating voltage connection and a direct voltage connection. The voltage converter arrangement comprises a transformer having three primary windings and one secondary winding. The three primary windings of the transformer are arranged in a delta configuration, with a primary winding and a preferably bipolar switching element being arranged in series in each case.

A DC-DC converter (10) includes a primary-side control-circuit having an oscillator driving a transformer (30) in response to assertion of a PWM-signal (PWM) to transmit power from the primary to the secondary and ceasing in response to deassertion of the PWM-signal, and a receiver demodulator circuit (23) receiving / demodulating a feedback signal sent from the secondary to the primary by comparing an instantaneous value of an envelope indicative of voltages at the primary-coil to an average-value of the envelope to produce a reset-signal (RST). A PWM circuit (21) asserts the PWM-signal in response to a set-signal and deasserts the PWM-signal in response to assertion of the reset-signal (RST). A secondary-side control-circuit (40) rectifies the received power, asserts an intermediate feedback-signal (FB) if feedback (VFBK) indicative of the output voltage (VOUT) is greater than a reference-voltage (VREF), and connects a capacitance (C) between the secondary and ground in response to assertion of the intermediate feedback-signal (FB) to modulate and send the feedback to the primary.

The invention relates to a small load isolation switch device for a bus system. The load disconnector device includes a fuse housing compartment for a fuse. A simple and small sized method for detecting fuse failure within the containment compartment is provided. Fuse faults are indicated by galvanic isolation signals.