Abstract: A switching converter has four switches and a control circuit. The control circuit provides a first drive signal to control a first switch and a second drive signal to control a second switch based on a first set signal, and provides a third drive signal to control the third switch and a fourth drive signal to control the fourth switch based on a second set signal. When an output voltage is larger than an input voltage, an on-time period of the third switch is adaptively adjusted according to the input voltage, the output voltage and a first parameter. When the output voltage is less than the input voltage, the on-time period of the third switch is adaptively adjusted according to the input voltage, the output voltage and a second parameter.

Abstract: The disclosed apparatus, system and method may include at least the delivery of device power to a single or plurality of workstations, which may include at least one power storage unit suitable to supply power to the plurality of workstations; a plurality of control units each associated with one of the plurality of workstations, wherein each of the control units receives power from the at least one power unit, is communicatively associated with the at least one power unit, and comprises a plurality of power outputs suitable to output power from the power unit to devices associated with the respective workstation; and may include at least one ambient energy collector suitable to provide accumulated power to the at least one power unit.

Abstract: A driving circuit providing a driving signal at a driving terminal to drive a power switch. The driving signal has a first driving period and a second driving period. Both the first driving period and the second driving period have a first driving time interval. The driving circuit has a first equivalent on resistor established during the first driving time interval and located between a first voltage node and the driving terminal. The first equivalent on resistor has a first equivalent on resistance during the first driving time interval of the first driving period and has a second equivalent on resistance during the first driving time interval of the second driving period. The first equivalent on resistance and the second equivalent on resistance are not equal.

Abstract: A method for operating an MR system with a gradient power amplifier having at least one output stage that is connectable to a gradient coil, and having four switching elements connected to one another as an H-bridge includes, to operate the gradient coil, in alternation: switching the switching elements attached to a common first pole of a voltage supply to conductive and switching the switching elements attached to a common second pole of a voltage supply to blocking by inverting power drivers; and switching the switching elements attached to a common first pole of a voltage supply to blocking and switching the switching elements attached to a common second pole of a voltage supply to conductive by inverting power drivers. The switching elements attached to the first pole are switched by non-inverting power drivers, and the switching elements attached to the second pole are switched by inverting power drivers.

Abstract: A method of randomizing inductor current in at least one of a plurality of parallel coupled peak valley current-controlled power converters may include comparing the inductor current to a threshold to generate a comparison signal, delaying the comparison signal by a plurality of delay amounts to generate a plurality of delayed versions of the comparison signal, and randomly selecting one of the plurality of delayed versions of the comparison signal for controlling the inductor current during one or both of a charging state and a transfer state of the at least one of the plurality of parallel coupled peak/valley current-controlled power converters.

Abstract: According to an aspect, a power supply system includes a plurality of power converters configured to deliver a system load current to a load, where the system load current is a combination of individual load currents provided by the plurality of power converters, and a system performance controller configured to detect a value of the system load current. The system performance controller is configured to determine, using power loss information, values for the individual load currents such that a composite efficiency achieves a threshold condition. The system performance controller is configured to generate control signals to operate the plurality of power converters at the determined values.

Abstract: Apparatus and associated methods relate to modulating a duty cycle in each of N interleaved power stages in response to determination whether a phase current is above or below an average of all phase output currents. In an illustrative example, the duty cycle modulation may increase or decrease delay on either the leading or trailing edges, which may fine-tune the phase PWM signal to correct the phase current to the average phase current. The modulation may be determined by comparing, for example, the voltage polarity across a resistor that extends between a signal representative of average phase current (IMON/N) and the corresponding phase current. By using the delay modulation engine, a power stage may locally and autonomously change the pulse width of a PWM signal to substantially balance phase currents among all of the interleaved power stages.

Abstract: A linear power source 1 comprises: an output transistor 10 that is connected between an input end of an input voltage VIN and an output end of an output voltage VOUT; a driver 30 for driving the output transistor 10 so that a feedback voltage VFB according to the output voltage VOUT matches a reference voltage VREF; a current detection unit 50 for detecting an output current IOUT flowing to the output transistor 10; and a voltage adjustment unit 40 for adjusting the reference voltage VREF or the feedback voltage VFB so that a differential voltage between a first voltage (for example, VIN itself) according to the input voltage VIN and a second voltage (for example, VOUT itself) according to the output voltage VOUT or the reference voltage VREF will not fall below an offset voltage Voffset according to the output current IOUT.

Abstract: A first switch couples an input node receiving a main control signal for a main switching stage of a multi-phase converter to an output node delivering a secondary control signal for a secondary switching stage following actuation of the secondary switching stage. A second switch couples the output node to a capacitor during a time period of actuation/deactuation of the secondary switching stage. Current is sourced to the capacitor during the actuation time period or sunk from the capacitor during the deactuation time period. The sourced or sunk current may be generated proportional to the main control signal.

Abstract: An apparatus is provided which comprises: a first voltage regulator; a second voltage regulator; and a switch to selectively couple the first voltage regulator to the second voltage regulator, such that a first output node of the first voltage regulator is temporarily coupled to a second output node of the second voltage regulator via the switch.

Abstract: A power conversion device includes a first switching element and a first inductor connected in series between a first terminal and a second terminal, the first inductor and a second switching element being connected in series between the second and third terminals, a switching controller that alternately turns on and off the first and second switching elements, a first capacitor connected between the first and second terminals, and a second capacitor connected between the second and third terminals. When a first full-wave rectified voltage is input, switching frequencies of the first switching element and the second switching element, an inductance of the first inductor, a capacitance of the first capacitor, and a capacitance of the second capacitor are set so that a second full-wave rectified voltage having a voltage amplitude and a phase same as the voltage amplitude and the phase of the first full-wave rectified voltage is output.

Abstract: An inverting switching regulator is provided. The inverting switching regulator is used to generate a negative output voltage based on a positive input voltage. The inverting switching regulator includes an inductor configured to pass an inductor current from a first terminal to a second terminal; a flying capacitor coupled to the second terminal of the inductor; and a plurality of switches configured to apply a negative voltage to the second terminal of the inductor by charging the flying capacitor by the positive input voltage during a first phase, and by connecting the flying capacitor in series to a ground node and the inductor during a second phase.

Abstract: A power supply unit includes a housing having at least one input terminal and at least one output terminal, an AC-DC converter which is arranged in the housing and which is connected to the input terminal, a DC-DC converter which is arranged in the housing and which is connected to the output terminal; and a capacitor which forms a structural part of the housing. Furthermore, an on-board power supply network of an aircraft or spacecraft is also described.

Abstract: A power stage circuit and a calculation board. The power stage circuit includes an input circuit and an output circuit. The input circuit and the output circuit are electrically connected. The power stage circuit also includes a plurality of package pins. The plurality of package pins are respectively connected to the input circuit, the output circuit, and a power supply package unit.

Abstract: The disclosed apparatus, system and method may include at least the delivery of device power to a single or plurality of workstations, which may include at least one power storage unit suitable to supply power to the plurality of workstations; a plurality of control units each associated with one of the plurality of workstations, wherein each of the control units receives power from the at least one power unit, is communicatively associated with the at least one power unit, and comprises a plurality of power outputs suitable to output power from the power unit to devices associated with the respective workstation; and may include at least one ambient energy collector suitable to provide accumulated power to the at least one power unit.

Abstract: Disclosed are a control circuit, a display apparatus and a control method for a control circuit. An input end of a voltage control circuit is connected to a first power input end, and an output end of the voltage control circuit is connected to a first input end of a voltage detection circuit; a second input end of the voltage detection circuit is connected to a second power input end, and an output end of the voltage detection circuit is connected to a controlled end of a switch circuit; an input end of the switch circuit is connected to the first power input end, and an output end of the switch circuit is connected to an input end of the discharging circuit.

Abstract: Power supply circuitry and enhanced associated techniques are presented herein. In one example, a method includes powering a circuit with a plurality of power supply phases, and monitoring thermal properties of the plurality of power supply phases. Responsive to the thermal properties indicating at least one of the plurality of power supply phases exceeds a thermal threshold, the method includes selecting a dormant power supply phase to supplant the at least one of the plurality of power supply phases.

Abstract: Circuits and methods for reducing the cost and/or power consumption of a user terminal and/or the gateway of a telecommunications system that may include a telecommunications satellite. Embodiments include “chained” feedback-regulated voltage supply circuits. These circuits substantially eliminate the need for separate regulator circuits for each regulated voltage. These circuits are designed to automatically maintain a substantially constant first voltage at a first node for a first load and maintain a substantially constant second voltage at a second node for a second load. Some disclosed configurations of these circuits may be useful to achieve greater current capability at the same voltage without requiring larger switches and higher inductor and capacitor sizes that may be needed in a single (conventional) stage voltage supply circuit.

Abstract: Hundreds of thousands of concrete bridges and hundreds of billions of tons of concrete require characterization with time for corrosion. Accordingly, protocols for rapid testing and improved field characterization systems that automatically triangulate electrical resistivity and half-cell corrosion potential measurements would be beneficial allowing discrete/periodic mapping of a structure to be performed as well as addressing testing for asphalt covered concrete. Further, it is the low frequency impedance of rebar in concrete that correlates to corrosion state but these are normally time consuming vulnerable to noise. Hence, it would be beneficial to provide a means of making low frequency electrical resistivity measurements rapidly. Further, prior art techniques for electrical rebar measurements require electrical connection be made to the rebar which increases measurement complexity/disruption/repair/cost even when no corrosion is identified.

Abstract: Circuits and methods for measuring a working current of a circuit module. An exemplary circuit for measuring a working current of a circuit module includes a capacitor. The capacitor supplies a voltage to the circuit module using a voltage on the two terminals of the capacitor. The circuit also includes a voltage measuring module. The voltage measuring module measures a voltage change amount on the two terminals of the capacitor in an unit time. The working current of the circuit module is determined by the circuit according to the voltage change amount on the two terminals of the capacitor in the unit time and a capacitance of the capacitor.

Abstract: Techniques are provided for an integrated circuit, current loop interface that can receive and extract a high-frequency digital communication signal from a low-frequency analog current signal using a complex impedance circuit. The complex impedance circuit can allow for low input impedance at the lower frequencies of the analog current signal and high input impedance at the higher frequencies of the digital communication signal.

Abstract: The present disclosure provides alternative solutions to the problem of providing a stable voltage reference to high speed ADCs that possess high sampling rates. In one example the high speed amplifier is replaced by a smaller, slower, lower power amplifier in combination with a relatively large capacitor connected to the same node as the amplifier output and the ADC reference input. The capacitor is charged substantially to the external reference voltage and hence keeps the reference input of the ADC almost at the external reference voltage between conversions, such that when conversion is about to occur and the external reference is switched in then very little charge is required from the external reference, and hence the reference signal quickly settles.

Abstract: A method of manufacturing a power semiconductor module according to the present invention includes the steps of: (a) forming a 6-in-1 chip 1 that is a power semiconductor chip incorporating a plurality of lateral power transistors; (b) forming control chips configured to control the 6-in-1 chip 1 according to a process rule different from a process rule of the 6-in-1 chip 1; and (c) forming one power semiconductor module with the 6-in-1 chip 1 and the control chips.

Abstract: Embodiments include a technique for eliminating secondary fuses in high power solid state power controllers, the technique includes controlling gate power provided to a field effect transistor array, and detecting a failure mode. The technique also includes disabling the gate power based at least in part on detecting the failure mode, and restoring the gate power responsive to resolving the failure mode.

Abstract: A tuneable flat panel UV exposure system for screen printing is provided. The panel includes a plurality of UV LED chips where each chip is connected to multiple, independently controllable power sources and pulse width modulation circuits. The power sources allow an operator to control a plurality of different wavelength outputs independently for each UV LED in the panel.

Abstract: A voltage regulator includes a programming interface via which programming instructions may be applied to a processor of the voltage regulator. The voltage regulator operates the processor according to the programming instructions to select one of multiple active internally-generated analog voltage levels to determine an output voltage level of the voltage regulator.

Abstract: Disclosed herein is a battery module including a battery cell assembly constituted by at least two battery cells, a front plate and a rear plate fixed to the battery cell assembly such that the front plate and the rear plate cover outermost ones of the battery cells, an electrically insulative cover member mounted at an upper end of the battery cell assembly, the electrically insulative cover member being provided with through holes, through which electrode terminals of the battery cells extend, a PCB mounted on a bottom of the cover member, a plurality of conductive connection parts arranged on the cover member, the conductive connection parts being connected to the electrode terminals of the battery cells and the PCB, and a lower molding part located on the PCB at the bottom of the cover member, the lower molding part covering the connection between the PCB and the conductive connection parts.

Abstract: Method(s) for limiting current in an electrical circuit having transmission wires for power transmission include determining whether an unexpected operating condition exists along the transmission wires and limiting the current to prevent (damage caused by) the unexpected operating condition. The method may further include disabling the electrical circuit if the unexpected operating condition persists. Additionally, a system includes a power source, a solid state power controller (SSPC) configured to operate in a first conducting state and a second non-conducing state, and a controller.

Abstract: A device and method for controlling a voltage applied to processor cores of a processor are disclosed. The method includes processing a plurality of tasks on the processor with a plurality of processor cores and applying a rail voltage to the plurality of processor cores. The number of the plurality of processor cores that are active is adjusted, and the rail voltage that is applied to the plurality of processor cores is adjusted based upon the number of the plurality of processor cores that are active.

Abstract: A power receptacle includes a socket, where a direct current (DC) power signal is provided at the socket to provide a DC power to a device that gets plugged into the socket. The power receptacle further includes a switch that is electrically coupled to the socket. The power receptacle also includes a controller that controls the switch to control whether the DC power signal is available at the socket. The controller controls the switch based on a power control command that is wirelessly received by the power receptacle.

Abstract: An electrical management system for managing a smart home. A plurality of end units such as electrical outlets and electrical switches sample the electricity going through the end-unit at least 1,000 times per second. The information is communicated to a server, which analyzes the data across many installations and can alert the user for any abnormal electrical situation in the home.

Abstract: A device for measuring voltage across a remote load includes a power supply configured to output a first output voltage to the remote load. A switch is selectively movable from a closed position to an open position. A measuring circuit measures a load voltage across the load when the switch is in the open position and determines a voltage difference between the first output voltage and the load voltage. The measuring circuit adjusts the first output voltage to a second output voltage to compensate for the voltage difference. A second A/D converter can also be coupled to the power supply. The second A/D converter measures a voltage across a resistor such that a change in the voltage indicates a change in the load voltage. The power supply is then adjusted to output a second output voltage to compensate for any change in load voltage.

Abstract: A system for identifying which electrical outlets are electrically connected to a circuit breaker, including an electrical outlet faceplate cover having a plurality of electrical outlet openings and a fastener located between the plurality of electrical outlet openings such that the electrical outlet faceplate cover is located over an electrical outlet, a circuit breaker panel having at least one circuit breaker located on the circuit breaker panel, and a near field communications tag located on a back side of the electrical outlet faceplate cover, wherein the near field communications tag is operatively connected to the fastener such that the near field communications tag contains information related to which of the at least one circuit breakers is electrically connected to the electrical outlet.

Abstract: The described embodiments include an apparatus that controls voltages for an integrated circuit chip having a set of circuits. The apparatus includes a switching voltage regulator separate from the integrated circuit chip and two or more low dropout (LDO) regulators fabricated on the integrated circuit chip. The switching voltage regulator provides an output voltage that is received as an input voltage by each of the two or more LDO regulators, and each of the two or more LDO regulators provides a local output voltage, each local output voltage received as a local input voltage by a different subset of the circuits in the set of circuits. During operation, a controller sets an operating point for each of the subsets of circuits based on a combined power efficiency for the subsets of the circuits and the LDO regulators, each operating point including a corresponding frequency and voltage.

Abstract: A system for identifying which electrical outlets are electrically connected to a circuit breaker, including an electrical outlet faceplate cover having a plurality of electrical outlet openings and a fastener located between the plurality of electrical outlet openings such that the electrical outlet faceplate cover is located over an electrical outlet, a circuit breaker panel having at least one circuit breaker located on the circuit breaker panel, and a near field communications tag located on a back side of the electrical outlet faceplate cover, wherein the near field communications tag is operatively connected to the fastener such that the near field communications tag contains information related to which of the at least one circuit breakers is electrically connected to the electrical outlet.

Abstract: This disclosure describes techniques for automatically identifying endpoint devices based on differing power loads drawn by the endpoint devices. In some instances, the endpoint devices are distributed about one or more facilities, such as item handling facilities, and may comprise an array of sensors for tracking inventory items within, into, and out of these facilities. These sensors may include cameras, weight sensors, RFID readers, microphones, and the like. Further, multiple ones of these sensors may couple to a power injector (e.g., a power-over-Ethernet (POE) injector) that provides both data and power to each sensor over a cable. The power injector may in turn couple to a network switch and/or a controller, which may identify the endpoint devices based on their modulated power loads.

Abstract: A synchronous switching regulator circuit for supply regulation of a switching circuit includes a pass transistor to couple the switching circuit to a supply voltage. The synchronous switching regulator circuit further includes a switch that is operable to synchronously turn off a flow of a supply current through the pass transistor. The switching circuit can be controlled by a switching signal, and the switch can operate in synchronization with the switching circuit.

Abstract: The present disclosure provides a system and method for managing a four-switch BUCKBOOST converter with a combination of a Constant Off-time (COT) control and a Peak Current Mode (PCM) control. With the COT control, the four-switch BUCKBOOST converter can automatically and smoothly transition between a BUCK mode, a BUCKBOOST mode, and a BOOST mode when input voltage varies. In some implementations, the four-switch BUCKBOOST converter only requires a simple, low-power-consumption and robust system control loop compensation with the PCM control for inductor current, and, thus, eliminates the need for oscillator and slope compensation circuit. The PCM control is used to determine turn-off-timing of switches of the four-switch BUCKBOOST converter. The system control loop compensation can provide cycle-by-cycle current limit function to protect the converter and load from over-current damages.

Abstract: The invention provides for a network power-supply voltage adaptor arranged to receive an input voltage (V in) from a network trunk cable and to present an internal voltage derived from the said input voltage (V in), the adaptor being arranged, when at least one of the input voltage (V in) or the said internal voltage is above a reference voltage (Ref V), to regulate the received input voltage (V in) to provide an adaptor output dc power supply voltage (V out) at a substantially constant dc power supply level less than that of the input voltage (V in), and independent of changes in the input voltage level (V in), and the adaptor further comprising at least one communication feed-through loop (55, 56, 66, 68) for the passage of substantially unaltered communications signals through the adaptor.

Abstract: The present disclosure provides a system and method enabling a self-burn-in test for a power supply device (PSD) of a server system using a multi-phase scheme. The PSD comprises a power-width modulation (PWM) controller, and a plurality of power stages. Each of the plurality of power stages comprises a driver, a high-side MOSFET, and a low-side MOSFET. In one aspect of the present disclosure, upon receiving a test mode command from a controller of the server system, the PWM controller can send a PWM signal to switch a specific power stage to the On state, and send at least another PWM signal that switches other power stage(s) of the plurality of power stages to the Tri-state. During a subsequent self-burn-in test of the specific power stage, low-side MOSFET(s) of the other power stage(s) can function as a load for the specific power stage.

Abstract: A power supply includes a voltage converter circuit which converts an input voltage into an output voltage and outputs the output voltage, a voltage controller which controls the voltage converter circuit in response to a first feedback voltage or a second feedback voltage, a feedback terminal which supplies the first feedback voltage, an internal voltage divider circuit which supplies the second feedback voltage, and a switch unit which transfers the first feedback voltage or the second feedback voltage to the voltage controller.

Abstract: The present invention relates to a method for supervision of an electrical measurement in a wind power plant, with a plurality of wind turbine generators, the method comprises, a) measuring a measurement of an electrical parameter in the wind power plant, b) determining a difference between the measurement and a reference value, c) in case the difference is greater than a threshold value, incrementing an event counter, d) in case the event counter is incremented, raising a first warning flag. The invention also relates to a power plant controller arranged to supervise a wind power plant according to the method; the wind power plant comprises a plurality of wind turbine generators.

Abstract: A regulator includes: an ADC for detecting a change in an output voltage and outputting an error code; a control signal generation unit for generating a proportional control signal, integral control signals, a counting signal, and an error sign signal based on the error code; a proportional control unit for shifting the error code based on a proportional gain factor, and outputting a first control signal by synchronizing the shifted error code with the proportional control signal; an integral control unit for shifting the integral control signals based on the counting signal, shifting the shifted signals based on an integral gain factor to generate integral pulse signals, and outputting second control signals by controlling a pre-stored code value based on the integral pulse signals and the error sign signal; and a driving unit for outputting first and second currents in response to the first and second control signals.

Abstract: An apparatus for providing surge-tolerant power to an appliance is provided. The apparatus includes an input circuit for receiving a source of DC voltage. The apparatus also includes a pass device having a first terminal, a control terminal and a second terminal. Further, the apparatus includes a first means for providing an output voltage based on an input of the pass device. The apparatus also includes a second means for applying a voltage to a control terminal of the pass device based on the output voltage. The voltage is sufficient to put the pass device into a low impedance state between the first terminal and the second terminal thereof.

Abstract: A power supply system includes a first converting stage, a second converting stage, and a third converting stage. The first converting stage is configured to generate a first voltage according to a first input voltage. The second converting stage is coupled to the first converting stage in series, and includes a first non-regulated power converter and a second non-regulated power converter. The first non-regulated power converter is configured to generate a second voltage according to the first voltage. The second non-regulated power converter is configured to generate a third voltage according to the second voltage. The second voltage is higher than the third voltage, and a varying range of the second voltage is wider than a varying range of the third voltage. The third converting stage is configured to generate a first output voltage according to the third voltage.

Abstract: A differential probe provides a probe input which comprises two inputs for recording a first and second input signal. The differential probe further provides a first amplifier which is connected to the two inputs. The differential probe additionally provides a compensation device, which generates and superposes on the first and second input signal a differential offset signal. The compensation device also generates a common-mode offset signal which is independent of the differential offset signal.

Abstract: A system for powering and controlling a backlit electronic display where redundancy is used to provide two independent paths from a pair of power sources to the backlight. Further, two independent paths are also used from a pair of power sources to the electronic display. If any one of the paths were to fail or begin to degrade in performance, the system contains monitoring devices which can direct another path to be used by the system. Two separate control circuits for the electronic may be used so that either one may be used to control the electronic display if one were to fail. Two separate temperature sensors and luminance sensors may also be used to increase the durability of the system.

Abstract: A light emitting assembly is described. In one embodiment, one or more light emitting diode (LED) devices and one or more microcontrollers are bonded to a same side of a substrate, with the one or more microcontrollers to switch and drive the one or more LED devices.

Abstract: A current transformer arrangement, and method, include a current sensor for producing a sensor output voltage that is proportional to the input current flowing in a conductor; a first processing branch including a voltage calculating device for calculating the effective voltage value of the sensor output voltage; a second processing branch including a polarity detecting device having an input terminal connected with the current sensor output terminal to produce a polarity signal having one polarity when the conductor input current is either an alternating current, a hybrid current, or a direct current flowing in one direction, and the opposite polarity when the conductor input current is a direct current flowing in the opposite direction; and a multiplier device for modifying the effective voltage value to produce a signed effective voltage having a polarity corresponding with the polarity of the polarity signal. A modifying circuit modifies the signed effective voltage.

Abstract: A controller for a multiphase converter comprises a first stage controller for producing a first gate drive signal to turn on a first power transistor of a first boost converter; a delay element configured to produce a delayed signal by delaying the first gate drive signal by half a cycle length; a time difference detection element configured to: output a turn on command based on a zero crossing detection (ZCD) signal indicating that one or more zero current conditions of a second boost converter of the multiphase converter are met and the delayed signal; and a second stage controller configured to assert a second gate drive signal to turn on a second power transistor of the second boost converter based on the turn on command.