Abstract: A novel system is offered for supplying power from an input node to a load coupled to an output node. The system may have multiple switches coupled between the input node and the output node. One or more limiting circuits may be configured for controlling the switches so as to limit outputs of the switches. For example, the limiting circuits may limit current through the respective switches. One or more timers may set a delay period for indicating a fault condition after the limiting is initiated.

Abstract: An inverter system includes an inverter apparatus and a smoothing capacitor charging-power apparatus. The inverter apparatus includes a transformer and an inverter cell. The transformer includes primary windings and secondary windings. Each of the inverter cells includes a converter circuit, a smoothing capacitor, and an inverter circuit. The converter circuit is configured to convert an intermediate alternating-current voltage to a direct-current voltage. The smoothing capacitor is configured to smooth the direct-current voltage. The inverter circuit is configured to at least partially generate a phase voltage of a variable alternating-current voltage from the direct-current voltage smoothed by the smoothing capacitor. Electric power is to be supplied from a second power supply different from a first power supply to the smoothing capacitor charging-power apparatus.

Abstract: An organic light emitting display device includes a display panel, a data driver, and a scan driver. The display panel includes sub-pixels. The data driver supplies a data signal to the sub-pixels. The scan driver supplies a scan signal for controlling a switching transistor of each sub-pixel, and a sensing signal for controlling a sensing transistor of each sub-pixel. The sensing transistor has a turn-on time for detecting whether a short has occurred between at least two electrodes of a switching transistor in response to a sensing signal.

Abstract: System and method for providing at least an output current to one or more light emitting diodes. The system includes a control component configured to receive at least a demagnetization signal, a sensed signal and a reference signal and to generate a control signal based on at least information associated with the demagnetization signal, the sensed signal and the reference signal, and a logic and driving component configured to receive at least the control signal and output a drive signal to a switch based on at least information associated with the control signal. The switch is connected to a first diode terminal of a diode and a first inductor terminal of an inductor. The diode further includes a second diode terminal, and the inductor further includes a second inductor terminal.

Abstract: The present disclosure provides a control apparatus of a switch-mode power supply and a switch-mode power supply. In the control apparatus of the present disclosure, a short-circuit protection module is set, and when a switching transistor of the switch-mode power supply is turned on, and the short-circuit protection module detects that a voltage across a current sensing resistor of the switch-mode power supply is less than a predetermined value within a predetermined period, that is, the current sensing resistor is short-circuited, the short-circuit protection module generates a short-circuit protection signal, and a driving controller controls the switching transistor to turn off according to the protection signal, thereby switching off the control apparatus, preventing breakdown of the switch-mode power supply, and avoiding erroneous protection.

Abstract: An inrush current prevention circuit includes: a voltage detection unit configured to detect a value of an input voltage applied by a power supply; a current detection unit configured to detect a value of an input current input from the power supply; a current limiting element configured to limit the input current; a voltage drop detection unit configured to detect a voltage drop in the power supply resulting from inrush currents using a detection voltage value detected by the voltage detection unit and a detection current value detected by the current detection unit; and a control unit configured to decrease a current limiting level of the current limiting element when the voltage drop detection unit detects the voltage drop.

Abstract: System and method for providing at least an output current to one or more light emitting diodes. The system includes a control component configured to receive at least a demagnetization signal, a sensed signal and a reference signal and to generate a control signal based on at least information associated with the demagnetization signal, the sensed signal and the reference signal, and a logic and driving component configured to receive at least the control signal and output a drive signal to a switch based on at least information associated with the control signal. The switch is connected to a first diode terminal of a diode and a first inductor terminal of an inductor. The diode further includes a second diode terminal, and the inductor further includes a second inductor terminal.

Abstract: A communication signal terminal receives a first communication signal which includes an address of a first IC and a first configuration value for the first IC, and a second communication signal which includes an address of a second IC and a second configuration value for the second IC. A data common bus is connected to the communication signal terminal and transmits the first communication signal and the second communication signal. The first IC is configured to receive the first communication signal transmitted through the data common bus, and store first configuration value for the first IC included in the second communication signal. The second IC is configured to receive the second communication signal transmitted through the data common bus, and store the second configuration value for the second IC stored in the second communication signal.

Abstract: A capsule (6) contains a liquid (28) to be supplied to an atomizer (20) and is mounted on or in an electronic smoking device (1). The capsule (6) has a controller (40) including a memory, which receives data from and transmits data to control electronics (14) of the electronic smoking device (1). A capacitor in the capsule (6) is charged by the electronic smoking device (1) and powers the controller (40) during intermediate intervals. Electrical contacts (26, 48) of the capsule are connected to electrical contacts (24, 46) of the electronic smoking device (1) to charge the capacitor and exchange data.

Abstract: A communication system comprising: a control line transmitting a control signal for controlling charging of a battery mounted on a vehicle; a reference potential line connected to a reference potential of the vehicle serving as a reference for the control signal; a first PLC communication device connected to the control line and the reference potential line and superposing onto the control signal a differential signal having a higher frequency than the control signal so as to perform communication with an external power supply apparatus; and an inductive element which is provided at a point of connection between the reference potential line 1c and the reference potential or provided in the reference potential line and the inductive element having impedance for a noise having a higher frequency than the control signal is higher than the impedance for the control signal.

Abstract: Herein provided are methods and systems for detecting failure of a sensor in a control system for a gas turbine engine. A signal is received from the sensor. A high-pass filter is applied to the signal to produce a high-frequency component signal. A rate of occurrence of signal spikes in the high-frequency component signal is determined. The high-frequency component signal is compared to a component signal threshold which is based on at least one known healthy component signal and at least one faulty component signal. The presence of intermittent open circuits caused by the sensor is detected based on the comparing and on the rate of occurrence of signal spikes.

Abstract: A control IC of a switching power-supply device includes a switching element, a control circuit, a regenerative current element for allowing a regenerative current of an inductor to flow when the switching element is in a turned-off state, a ground terminal connected to the regenerative current element, and a protection circuit that forms, when a voltage of the connection point is equal to or less than a threshold value, a regenerative path which connects a connection point between the regenerative current element and the ground terminal to a specific terminal and through which the regenerative current flows, and stops on-and-off control of the switching element by the control circuit.

Abstract: A protection circuit for short circuit of LED power supply includes a constant voltage source powered by the LED power supply, a constant current source powered by the LED power supply, a switching module for controlling the constant current source to turn off or turn on, and an output current detecting module for controlling the switching module to turn off or turn on. The constant current source is provided in parallel with the constant voltage source. The switching module includes a PNP type transistor connected in series to the constant current source. The output current detecting module includes a NPN type transistor, a base of the NPN type transistor being electrically connected to the output terminal of the constant voltage source, an emitter of the NPN type transistor grounding, and a collector of the NPN type transistor being electrically a base of the PNP type transistor.

Abstract: A power switch module comprising a control component. Upon an indicated operating condition fulfilling a protection condition, the control component is arranged to transition the power switch module from an ON state to a latched-OFF state in which the control component is arranged to configure the switching device to be turned off to decouple the load node from the power supply node. Having transition to the latched-Off state, the control component is further arranged to determine whether a voltage level at the load node exceeds a threshold voltage level, and if it is determined that the voltage level at the load node exceeds the threshold voltage level, transition the power switch module from the latched-OFF state to a current-limited state in which the control component is arranged to control the switching device to limit current-flow there through.

Abstract: An electric propulsion system is described that includes at least one branch for distributing electrical power, provided by a power source, to one or more loads. The at least one branch is partitioned into one or more zones and comprises a plurality of branch isolation devices that are configured to isolate the at least one branch from the power source in response to a fault current at the at least one branch. In addition, the at least one branch comprises a respective pair of zone isolation devices for each respective zone from the one or more zones. The respective pair of zone isolation devices for each respective zone is configured to isolate the respective zone from the at least one branch, during a test of the at least one branch for identifying which of the one or more zones is a source of the fault current.

Abstract: In a semiconductor device, an IGBT and an SJMOSFET connected in parallel have respective gate terminals controlled independently of each other. When a high voltage occurs and a high current flows caused by short-circuit in an external circuit under a condition of ON state of the IGBT and SJMOSFET, an operational amplifier in the control IC detects the overcurrent through the IGBT and controls the gate signal to restrict the current through the IGBT. After that, the operational amplifier throttles the current through the IGBT according to a reference voltage of a capacitor decreasing by the discharge through a constant current source, thus conducting soft-OFF operation of the IGBT.

Abstract: A method and system to monitor electrical devices. At least one characteristic electric power consumption profile is determined for an operational cycle for an electrical device. The electrical device includes a number of components that each operate at respective time intervals within the operational cycle. A measured electric power consumption dataset is received, from an electrical power measurement apparatus connected to a power input of the electrical device, for the electrical device where the measured electric power consumption dataset includes measurements of electrical consumption by the electrical device over a time duration corresponding to at least part of the operational cycle. The measured electric power consumption dataset is compared to the at least one characteristic electrical power consumption profile associated with the electrical device. Based on the comparing, an operational condition from within a plurality of operating conditions of the electrical device is indicated.

Abstract: In a semiconductor device, an abnormality monitor unit detects whether abnormal leakage current has been generated from a first functional module or a second functional module on the basis of a comparison between a change in voltage at a first node between the first functional module and a first power switch when the first power switch is in an off state and a change in voltage at a second node between the second functional module and a second power switch when the second power switch is in the off state.

Abstract: Devices and methods are provided for recovering from latchup state in fingerprint sensor devices. For example, a disclosed device can be operated to perform operations that include, receiving, at a microcontroller of the fingerprint sensor device, raw sensor data from a sensor array in communication with the microcontroller, comparing the received raw sensor data against a predetermined threshold, and, based at least partly on the comparing, resetting power supplied to the fingerprint sensor device to recover from a latchup state.

Abstract: A switching power converter is provided with an overvoltage protection circuit that softly switches on a power bus switch during a soft-start period responsive to a device connecting to a data cable for receiving power over a power bus coupled to the power bus switch.

Abstract: An integrated power distribution, data network, and control architecture for a vehicle is provided that includes nodes distributed throughout the vehicle. Each node includes power distribution (PD) and data collection and distribution (DCD) components. The PD components receive electrical power from a source external to the node and distribute and control the electrical power supplied to active and passive electrical loads that are external to the node. The PD components include an electrical power input interface configured to receive an electrical power input from a source external to the node, and one or more power control modules. Each power control module can control the electrical power supplied to one or more electrical power output interfaces that supply power to the active and passive electrical loads. The DCD components receive data from data sources external to the node and transmit data to data consumers external to the node.

Abstract: An electrical distributor arrangement, in particular for electrically driven motor vehicles, having a housing which has two electrical terminals which are connectable in each case to an external electrical energy source, a multiplicity of through lines which are connected at their ends in each case to one of the terminals, and a multiplicity of electrical attachment lines which are led into the housing for the purposes of electrically contacting a multiplicity of electrical consumers with the through lines, wherein the through lines are in the form of rigid current rails, and wherein the attachment lines are fixedly connected in each case to one of the current rails.

Abstract: This disclosure discusses systems and methods related to the following example scenarios. When an aerial vehicle of an airborne wind turbine is functioning normally in motoring mode, a voltage converter may receive a nominal voltage from a power conversion system and provide the nominal voltage to the aerial vehicle. When the aerial vehicle is experiencing a fault in motoring mode, the voltage converter may receive the nominal voltage and provide a reduced fault voltage to the aerial vehicle. When the aerial vehicle is functioning normally in power-generating mode, the voltage converter may receive the nominal voltage from the aerial vehicle and provide the nominal voltage to the power conversion system. When the aerial vehicle is experiencing a fault in power-generating mode, the voltage converter may receive a reduced fault voltage from the aerial vehicle, boost the fault voltage, and provide the boosted fault voltage to the power conversion system.

Abstract: An adaptable modular power system (AMPS) is hierarchical in a number of ways. AMPS modules connect to a backplane, and one or multiple AMPS backplanes can form an AMPS domain. At the same time, the vehicle electronics is modular, with various payload boxes needing to communicate with each other. A common power and signaling cable is provided to interconnect payload boxes. A dedicated connector system is also provided so that AMPS modules may communicate, control, receive data, and supply and receive power.

Abstract: A steering control device capable of suppressing a reduction in reliability even in the case where the redundancy of the power source is increased is provided. A steering ECU includes two control systems in which different external power sources are connected to two drive circuits. The low potential sides of the drive circuits and the low potential sides of the corresponding external power sources are independently connected to each other via power source ground lines for the two control systems. The low potential sides of the drive circuits are connected to each other via an internal ground. Two current detection circuits are provided between the power source ground lines and the internal ground to detect power source ground current values, respectively. The steering ECU includes microcomputers that detect a ground abnormality on the basis of the results of detection performed by the current detection circuits.

Abstract: Systems and methods are provided for a dual function inrush limiting circuit (ILC). The systems and methods may include a level shift circuit (LSC). The LSC may include a Zener diode, a block diode and a capacitor. The Zener diode being in anti-series with respect to the block diode. The ILC may further include a switch electrically coupled to the LSC, an input terminal and an output terminal. The LSC may be configured to activate the switch such to electrically couple the input terminal to the output terminal. The ILC may include a direct current (DC)-DC converter electrically coupled to the output terminal. The DC-DC converter being electrically coupled to the input terminal when the switch is activated.

Abstract: In a circuit device, a plurality of protection circuits are disposed between a plurality of first power supply connecting terminals and a first input terminal of a load circuit. A switching element of each of the plurality of protection circuits is connected between a first power supply connecting terminal and a first input terminal, and is turned on when a DC power supply is connected with a normal polarity to the first power supply connecting terminal. Each of the plurality of protection circuits a parasitic diode that is connected in parallel to the switching element between a corresponding first power supply connecting terminal and a first input terminal in a direction where a current having a normal polarity is caused to flow. The reset circuit performs periodically a reset operation of temporarily turning off the switching element.

Abstract: In a method of sensing degradation of pixels in an organic light emitting diode (OLED) display device, the method includes: generating degradation sensing data for the pixels by sensing the degradation of the pixels; generating degradation estimation data for the pixels based on input image data for the pixels; setting a degradation baseline for each sensing channel based on the degradation estimation data; and determining degrees of degradation of the pixels based on a difference between the degradation sensing data and the degradation baseline.

Abstract: An electronic airbag ignition circuit includes a first and second output for the electrically conductive connection to a first and second terminal of a magnetic actuator. The electronic airbag ignition circuit also includes a first switching element, whose contact-break path is connected in an electrically conductive manner to the first output, and a second switching element, whose contact-break path is connected in an electrically conductive manner to the second output. The electronic airbag ignition circuit includes a second control circuit connected in an electrically conductive manner to a control terminal of the second switching element. The second control circuit is configured to close the second switching element in a first triggering mode for a first predetermined duration and in a second triggering mode for a second predetermined duration that differs from the first duration.

Abstract: A zone selective interlocking device includes a first port, a second port, an input bus, an output bus and a query signal receiving branch. The first and second port each are switchable between two states, connected to the input bus and connected to the output bus, and the zone selective interlocking device is operable in a first mode. In the first mode, the query signal receiving branch is turned on. Within a preset timeslot, a link fault query signal is permitted to be inputted to the query signal receiving branch through the first port, while a link fault query signal is prevented from being inputted to the query signal receiving branch through the second port. Based on whether a link fault query signal is received within the timeslot, a judgment is made on whether a fault has occurred in a communication link connected to a corresponding port.

Abstract: A system for controlling power output of a power supply includes power conversion circuitry, output terminals, and a controller. The controller controls the power conversion circuitry to provide a known current to one or more leads, wherein the one or more leads are shorted at the distal end. The controller measures a voltage drop across the one or more leads shorted at the distal end. The controller stores a parameter determined based on the voltage drop, such as a resistance of the one or more leads. The controller controls the power conversion circuitry to provide a target voltage to the load based on the stored parameter when the one or more leads are not shorted at the load.

Abstract: To provide a voltage regulator equipped with an overcurrent protection circuit which needs not to separately adjust a limited current and a short-circuited current and is capable of collectively adjusting them. There is provided an overcurrent protection circuit equipped with an output current limitation circuit which distributes a current supplied from a transistor sensing an output current of an output transistor and controls a gate voltage of the output transistor by the distributed current to limit the output current. The overcurrent protection circuit is configured in such a manner that the current distributed from the transistor sensing the output current is varied according to the voltage outputted from the output transistor, and its distribution ratio is determined by a size ratio between elements.

Abstract: A tunable DC voltage generating circuit includes: a resonance circuit including an inductor and an input capacitor connected in series configuration, and arranged to operably receive an input signal and generating a resonance signal at an output node between the inductor and the input capacitor; a rectifying circuit coupled with the output node and arranged to operably rectify the resonance signal; a current control unit connected with the resonance circuit in series configuration; a stabilizing capacitor coupled with an output terminal of the rectifying circuit and arranged to operably provide a DC output signal having a voltage level greater than that of the input signal; and a control circuit coupled with the output terminal of the rectifying circuit and the current control unit, and arranged to operably adjust a current passing through the current control unit to thereby change the DC output signal.

Abstract: A controller for controlling a power converter is described. The controller may include a current sensor and a pulse modulation device. The current sensor may receive a first amount of current from the power converter. In response to receiving the first amount of current, the pulse modulation device may output a pulse modulated signal defined by a first frequency. After outputting the pulse modulated signal defined by the first frequency, the pulse modulation device may adjust the pulse modulated signal from the first frequency to a second frequency. The current sensor may receive a second amount of current from the power converter. The pulse modulation device may also re-adjust, the pulse modulated signal from the second frequency to a third frequency; and output the pulse modulated signal defined by the third frequency.

Abstract: An interlock switch is turned on to close a power supply line when a cover is closed, and turned off to open the power supply line when the cover is opened. A time constant circuit is connected to a node side of the interlock switch in the power supply line. A switch control unit determines that a user is intentionally turning on and off the interlock switch and turns off a switch Q1 when a smoothed voltage obtained by smoothing a voltage difference between voltage dividing nodes becomes larger than a threshold value.

Abstract: Provided is a voltage regulator including a clamp circuit capable of protecting a gate of an output transistor without limiting a drivability of the output transistor. The voltage regulator includes a level shift circuit having an input terminal connected to the gate of the output transistor and an output terminal connected to an input of the clamp circuit. The clamp circuit is controlled by an output voltage of the level shift circuit.

Abstract: An over-current protection circuit including, a current supply switch with a first terminal coupled to a supply current input and with a second terminal coupled to a supply current output. The current supply switch is switchable at least between an on-state, in which the current supply switch provides a conductive connection between the first terminal and the second terminal, and an off-state, in which the current supply switch interrupts the conductive connection between the first terminal and the second terminal. The over-current protection circuit receives a supply current via the supply current input and provides the supply current via the supply current output if the switch is in the on-state. The current supply switch includes a High Electron Mobility Transistor.

Abstract: To protect an electrical load connected to an output port from anomalous electricity in an apparatus that provides output electricity at the output port from input electricity accepted through an input port thereof, an input sensing unit is electrically connected to the input port and configured to indicate an overvoltage event. A power control unit generates, responsive to the overvoltage event, a modulation signal that defines at least one amplitude notch of variable temporal width. A switching mechanism electrically interposed between the input port and the output port transitions into conducting and non-conducting states in accordance with the modulation signal to superimpose the amplitude notch on electricity conveyed to the output port through the switching mechanism.

Abstract: A power conversion apparatus includes a first switching device at a high side and a second switching device at a low side. The first switching device and the second switching device are connected in series. The power conversion apparatus further includes a third switching device connected in series with the first switching device or the second switching device. Upon detection of an overcurrent flowing through one of the first switching device and the second switching device due to a short-circuit failure of another of the first switching device and the second switching device, the power conversion apparatus turns off the one of the first switching device and the second switching device, and turns off the third switching device.

Abstract: A remote user can specify data collection and processing characteristics of a wireless sensor network. In one example, a configuration station enables a user to activate/deactivate different sensor channels of data to support a delivery of data streams to customers. In another example, a configuration station enables a user to specify reporting intervals for different sensor channels of data. In yet another example, a configuration station enables a user to specify transformation functions for different sensor channels of data. The remote configuration process can be applied to every sensor in every sensor module unit attached to every wireless node at a monitored location.

Abstract: There is provided a battery device in which the accuracy of an over-current detection current value is high to have high safety. In a charging/discharging control circuit, a reference voltage circuit of an over-current detection circuit is configured to include a constant current circuit, a resistor, and a transistor having a resistance value that varies with a voltage of a secondary cell, that are connected to both ends of the secondary cell, and outputs, as a reference voltage, a voltage that is generated due to the flowing of a current of the constant current circuit to the resistor and the transistor.

Abstract: A fault detection circuit includes a micro processing unit configured to output a first pulse width modulation (PWM) signal, a driver electrically coupled to the micro processing unit, and a comparator configured to electrically connect the micro processing unit and the driver. The first PWM signal is configured to drive the driver to output a second PWM signal configured to drive the electrical device. The comparator is configured to compare the second PWM signal with a reference level to output a third PWM signal to the micro processing unit. The third PWM signal contains a number of high level signals and low level signals. The micro processing unit is configured to detect the number of the high level signals and the number of the low level signals during at least one time period to determine a status of an electrical device.

Abstract: Systems, methods, and apparatuses are provided in which power control relay switches may be configured to switch at or near a predetermined time during an AC cycle and/or that are configured to control a velocity of an armature of the relay switch during switching. An input power source may provide alternating current (AC) power and a voltage or current level of the AC power may be sensed. A relay controller may switch the relay switch based on a time at which the voltage or current is at or near a zero-crossing. The relay controller may be configured to close the relay switch based on when a voltage of the power input is at a zero-crossing, and is configured to open the relay switch based on when a current of the power input is at a zero-crossing.

Abstract: The present invention relates to an electroluminescent device (20) with a light-emitting element (21) having a capacitance, a switchable current source (22) being connected to the light-emitting element for providing a driving current to the light-emitting element, and a short detection circuit (23) for detecting a short in the light-emitting element. The short detection circuit comprises a triggerable voltage determining unit (24) for determining, upon being triggered, a voltage across the light-emitting element, a triggering unit (25) for triggering the triggerable voltage determining unit to determine the voltage across the light-emitting element after a time period (At) during which the driving current is not provided to the light-emitting element, and a short detection unit (26) for detecting a short in the light-emitting element based on the determined voltage across the light-emitting element. Therewith, the detection can be less sensitive with respect to production tolerances and the like.

Abstract: In one embodiment, the present invention includes a processor having a plurality of cores each to execute instructions, a non-volatile storage to store maximum peak operating frequency values each a function of a given number of active cores, a configuration storage to store frequency limits each corresponding to one of the maximum peak operating frequency values or a configurable clip frequency value less than the maximum peak operating frequency value. In turn, a power controller is configured to limit operating frequency of the cores to a corresponding frequency limit obtained from the configuration storage. Other embodiments are described and claimed.

Abstract: An illumination system includes: a first light-emitting element column including one of a single first light-emitting element or a plurality of first light-emitting elements connected in series; a second light-emitting element column connected in parallel with the first light-emitting element column, and including one of a single second light-emitting element or a plurality of second light-emitting elements connected in series; a constant current supply that supplies a constant current to the first light-emitting element column and the second light-emitting element column which are connected in parallel; a resistor that is connected in series with the first light-emitting element column, and detects a magnitude of current flowing through the first light-emitting element column; and a current adjuster circuit that adjusts the magnitude of the current flowing through the first light-emitting element column, according to the magnitude of the current detected by the resistor.

Abstract: The invention is provided with a first class-D amplifying unit for amplifying an inputted audio signal and supplying the amplified signal to a positive side of an audio output terminal, a second class-D amplifying unit for amplifying an inputted audio signal inverted in an inverting unit and supplying the amplified signal to a negative side of the audio output terminal, wherein, in a first mode, the first and second class-D amplifying units are activated and outputs of the first and second class-D amplifying units are kept equal to or less than a first current value, and wherein, in a second mode, the first class-D amplifying unit is activated, the second class-D amplifying unit is inactivated, the negative side of the audio output terminal is grounded, and output of the first class-D amplifying unit is kept equal to or less than a second current value larger than the first current value.

Abstract: A device and a method for temporarily closing a switch are disclosed. In an embodiment the device includes a first switch configured to be coupled to a load and a control circuit configured to temporarily close the first switch in response to a detection of a failure event in the first switch.

Abstract: An overcurrent detection circuit for a power switch comprises a sampling circuit and a comparing circuit. The sampling circuit is configured to perform current sampling on the power switch using a sampling Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) and an amplifier, convert a sample current into a sample voltage and transmit the sample voltage to the comparing circuit, and clamp operating voltages of the comparing circuit and of an output circuit of the amplifier by a serially connected clamping MOSFET. The comparing circuit is configured to compare the sample voltage with a reference voltage and to output a result of overcurrent detection.

Abstract: Proper control is performed even during a stuck abnormality of a current sensor 56 configured to detect a reactor current. A boosting converter 12 is controlled by feedback control of a boosted voltage of the boosting converter 12 and a reactor current, detected by the current sensor 56, of a reactor 54 in the boosting converter 12. When a variation of the reactor current is less than a predetermined current value, failure determination of the current sensor is performed and, if a variation of the pre-boosting voltage exceeds a predetermined voltage value, failure of the current sensor is determined.