Abstract: A distributed and scalable all-digital LDO (D-DLDO) voltage regulator allowing rapid scaling across technology nodes. The distributed DLDO includes many tillable DLDO units regulating a single supply voltage with a shared power distribution network (PDN). The D-DLDO includes an all-digital proportional-integral-derivative (PID) controller that receives a first code indicative of a voltage behavior on a power supply rail. A droop detector is provided to compare the first code with a threshold to determine a droop event, wherein information about the droop event is provided to the PID controller, wherein the PID controller generates a second code according to the first code and the information about the droop event. The DLDO includes a plurality of power gates that receive the second code.

Abstract: A resonant converter device comprising a selectable primary winding comprising a plurality of circuit legs, the selectable primary winding comprising one or more of a tapped primary winding or a plurality of switchable primary windings. At least one secondary winding coupled to the selectable primary winding to form a resonant transformer. At least one resonant inductor coupled to at least one of the plurality of circuit legs. A plurality of resonant capacitors, each circuit leg comprising at least a respective one of the plurality of resonant capacitors, and at least a second resonant capacitor of the plurality of resonant capacitors coupled within the second circuit leg. And, one or more switching devices connected to the resonant transformer and configured to selectively vary a resonant impedance of the resonant converter device when a voltage inputted to the resonant converter device varies.

Abstract: An electromagnetic device comprises an enclosure, at least one winding in the interior of the enclosure, at least one wireless sensor attached to the winding for sensing at least one property or deficiency of the electromagnetic device and at least one active communication unit comprising transceiving circuitry and at least one antenna, wherein the transceiving circuitry is placed on the exterior of the enclosure and the least one antenna is placed inside the enclosure for communication with the at least one sensor, wherein the at least one sensor comprises at least one sensor attached to the winding, and wherein the at least one sensor attached to the winding is a printed electronic sensor comprising electronics printed on an insulating substrate, where the substrate faces the at least one winding.

Abstract: A system for preventing ground fault in a three-phase electric transmission line system caused by a line break, includes: the transmission lines, a programmable relay protection system, including a plurality of relay devices on each line, programmed to include: preset parameter ranges of at least two electric operating conditions, at least one high sensitivity instantaneous undercurrent and at least one high sensitivity condition selected from line differential overcurrent and negative sequence overcurrent (and combinations thereof), the preset ranges being acceptable operating parameter ranges; monitoring; permitting closed circuit operation when all of the lines show that the two operating conditions are within the preset acceptable operating parameter ranges; tripping a circuit breaker on a broken line when that line shows that the two operating conditions are outside the preset parameter ranges; and shutting down power to the broken line before it otherwise causes a ground fault or other short circuit.

Abstract: A power supply circuit includes a first regulator and a second regulator. The first regulator is configured to generate a first output signal according to an input signal. A voltage value of the first output signal decreases according to the input signal and a first voltage threshold value at a power-off stage. The second regulator is configured to be enabled according to the first output signal to generate a second output signal according to the input signal. A voltage value of the second output signal decreases according to the input signal and a second voltage threshold value at the power-off stage. The second voltage threshold value is greater than the first voltage threshold value.

Abstract: A power supply device having variable output voltage includes a controller, and a first power supply module and a second power supply module connected in parallel. The controller selectively outputs a first voltage control signal and a first switch control signal to the first power supply module, or outputs a second voltage control signal and a second switch control signal to the second power supply module according to a voltage requirement signal. An output power of the first power supply module has a first voltage value selected from a first voltage value set, an output power of the second power supply module has a second voltage value selected from a second voltage value set, and a minimum value of the first voltage value set is greater than a maximum value of the second voltage value set. Thus, more extensive voltage output capabilities are provided, and good power conversion efficiency is achieved at the same time.

Abstract: An electronic device having a universal serial bus (USB) power delivery function includes a connector, an electrostatic discharge (ESD) protection circuit, a power reception notification circuit, and a control circuit. The connector is coupled to a USB host. The connector includes a configuration channel (CC) pin. The power reception notification circuit is configured to turn on, in response to an enable signal, a pull-down path of a pull-down circuit of the ESD protection circuit. The configuration channel pin generates a pull-down voltage through the pull-down path of the pull-down circuit when the pull-down path is turned on. The control circuit is configured to send the enable signal to the power reception notification circuit when a trigger signal that meets a power reception condition is detected. The control circuit controls the connector to draw power from the USB host when the pull-down voltage of the connector is greater than a pull-down threshold.

Abstract: A coil drive device energizes an operation coil to close an electromagnetic contactor. A rectifier outputs, to a power supply line, an input voltage obtained by full-wave rectification of an AC voltage supplied from a main power source. A controller controls on and off of a switching element connected to a power supply line in series with the operation coil. The controller controls a duty ratio that is an on period ratio of the switching element in each switching period in accordance with a value of a parameter calculated from a detected value of the input voltage, in at least a partial period after start of energization of the operation coil in response to a close command for the electromagnetic contactor.

Abstract: In some examples, a controller circuit comprises: a voltage subtractor circuit having a subtractor output and first and second subtractor inputs, the first subtractor input adapted to be coupled to a first current terminal of a transistor, and the second subtractor input adapted to be coupled to a second current terminal of the transistor; an internal voltage generator circuit having a generator input and a generator output, the generator input adapted to be coupled to the first current terminal; and a gate control circuit having a gate control input and a gate control output, the gate control input coupled to the subtractor output, the gate control output adapted to be coupled to a gate of the transistor, the gate control circuit including a switch coupled between the gate control output and the generator output.

Abstract: A short protection method for a power converter having an output terminal for providing an output voltage. The power converter works in a hiccup protection mode when a short fault occurs. The hiccup protection mode has a sleep stage and a reset stage, the short protection method detects the output voltage during the hiccup protection mode and sets the time period of the reset stage based on the detected output voltage. The time period of the reset stage increases with the increase of the detected output voltage.

Abstract: A converter using a planar transformer includes an input device that receives a first voltage, a transformer including a first planar transformer and a second planar transformer that reduce the first voltage, and an output device that outputs the first voltage as a second voltage, wherein the first voltage is greater than the second voltage, and the input device provides a current to a primary winding coil of each of the first planar transformer and the second planar transformer through a first current path and a second current path in which current directions are different with each other, and includes a plurality of inductors connected in parallel with the primary winding coil of each of the first planar transformer and the second planar transformer.

Abstract: A power converter includes a transformer including first and second windings, a switching circuit switching voltages applied to the first winding, a power supply circuit rectifying and smoothing a current in the second winding and generating a DC voltage, an adjustment circuit adjusting the DC voltage according to an operation mode including first and second modes in which the DC voltage is adjusted to first and second voltages, the second voltage less than the first voltage, and a protection circuit including first and second Zener diodes and a switch and stopping output of the adjusted voltage. A cathode of the first diode is connected to the supply circuit, and an anode of the first diode is connected to a cathode of the second diode and the switch, and the switch is connected in parallel to the second diode and is turned on in the second mode.

Abstract: Techniques are described for accessing data from a storage device. In one example, the storage device may include a storage medium comprising non-volatile memory, a network connection, and one or more processing entities. The one or more processors may be configured to receive a request from the network connection at the non-volatile memory storage device for accessing data associated with a file system object, the request comprising a virtual address offset, a file object identifier and a size of the data access, perform, at a flash translation layer of a storage device software stack executing on the one or more processing entities of the storage device, a translation from the virtual address offset to a physical address for the data stored on the non-volatile memory, using the virtual address offset and the file object identifier, and access the data from the physical address from the storage medium.

Abstract: The present disclosure relates to an adapter. The adapter includes an input port, a first output port and a second output port, and the adapter further includes: a rectifier circuit having an input terminal being connected to the input port of the adapter; a bus capacitor connected to an output terminal of the rectifier circuit in parallel; a first flyback converter having an input terminal connected to the bus capacitor and an output terminal coupled to the first output port; and a second flyback converter having an input terminal connected to the bus capacitor and an output terminal coupled to the second output port.

Abstract: A system includes a transformer rectifier unit (TRU) having three inputs, a first AC bus configured to supply power to a first of the three inputs, a second AC bus configured to supply power to a second of the three inputs, and a third AC bus configured to supply power to a third of the three inputs. The system includes a power quality sense device electrically connected to each of the first, second and third AC busses. The system includes an electrically held contactor electrically connected between the TRU and the power quality sense device. The electrically held contactor is configured and adapted to be switched ON or OFF depending on whether the power quality sense device is energized or de-energized.

Abstract: A converter system (100) includes a switch (102) adapted to be coupled to a switching terminal (104). The switch (102) is configured to generate a switching signal having first and second states at the switching terminal (104). Ripple generating circuitry (122) is adapted to be coupled to the switching terminal (104) and is configured to: generate a filtered signal based on the switching signal; and keep the filtered signal within a particular range. Loop control circuitry (116) is coupled to the ripple generating circuitry (122) and is configured to control the switch (102) based on the filtered signal.

Abstract: Systems, apparatuses, and methods are described for discharging an input voltage by utilizing discharge circuitry configured to produce a relatively constant discharge voltage value/output voltage, a relatively constant discharge current value/output current, or a relatively constant discharge power value/output power. The discharge circuitry may include at least one power device, such as a DC to DC converter.

Abstract: An AC/DC converter includes an AC circuit breaker, configured as a hybrid circuit or semiconductor circuit breaker; a rectifier; a smoothing capacitor; a semiconductor switch connected in series with the smoothing capacitor; and a first isolation relay for galvanic isolation. One input of the AC circuit breaker forms an AC input of the converter. One output of the AC circuit breaker is connected with an input of the rectifier. The smoothing capacitor, and the first semiconductor switch, connect a first output of the rectifier with its second output. The first output of the rectifier is connected with one input of the first isolation relay. The one output of the first isolation relay forms a first DC output of the AC/DC converter. The AC circuit breaker, the first semiconductor switch, and the first isolation relay are interconnected.

Abstract: A multi-converter switching power supply includes a first switching converter with a first output capacitor, a second switching converter with a second output capacitor, a bypass switch coupled across the second output capacitor, and a bypass control circuit for controlling the bypass switch. Input terminals of the first and switching converters are coupled in parallel, while output terminals of the first and switching converters are coupled in series to provide a total output voltage to a load. When detecting that the second output voltage approaches a negative voltage, the bypass control circuit turns on the bypass switch, so as to protect the second output capacitor from being damaged by a reverse DC voltage.

Abstract: An electrical device includes a fixed support with supply lines and a distribution circuit to supply power to a contactor block. Each contactor block includes secondary lines, each connected to a supply line, and is movable between joined and disjoined positions. Each contactor block includes a switching device for switching all secondary lines of the contactor block between open and closed. The electrical device also includes a control block, movable between joined and disjoined positions. When in the joined position, each contactor block also is held in the joined position, an electronic monitoring device of the control block also being connected to the switching device of each contactor block to control switching of each switching device independently. When the control block is in the disjoined position, the switching device of each contactor block opens the secondary lines, while each contactor block is movable between its joined and disjoined positions.