Abstract: A gate driving power source device can be miniaturized by sharing power source units, and a large current can be prevented from locally flowing in a single chip even when a short-circuit failure occurs in a multi-phase conversion circuit included in a power conversion device. There is provided a shared power source unit supplying a shared DC power source to a gate drive circuit provided in any one of a plurality of lower arms of multi-phase conversion circuits or any one of a plurality of upper arms of the multi-phase conversion circuit and gate drive circuits provided in upper arms or lower arms of other conversion circuits.

Abstract: A power control unit includes a power device, a heat dissipation member disposed to face the power device with an insulating resin member interposed therebetween, and a plurality of plate-shaped bus bars each of which has one end connected to the power device, in which a plurality of input bus bars connected to an input terminal of the power device are provided as the bus bar, and at least one of the plurality of input bus bars is erected so that a direction along a plate width is aligned with a direction along a normal line of a surface of the heat dissipation member facing the power device, and is disposed with respect to the heat dissipation member with the insulating resin member interposed therebetween.

Abstract: A power conversion device having a multi-phase converter in which a plurality of chopper circuits each including a switching element and a reactor connected to the switching element are connected in parallel is provided. The power conversion device includes a single current sensor that is provided on a primary side of the chopper circuit, and detects a phase current flowing through each of the reactors when the switching elements are in both an on state and an off state, and a drift current detection unit configured to detect a drift current of a phase current in the multi-phase converter on the basis of the phase current detected by the current sensor, wherein the current sensor detects a phase current such that directions of phase currents flowing through each of the reactors are the same as each other.

Abstract: An information processing apparatus includes an image acquiring unit that acquires a plurality of narrow-area images which are respectively images of parts of a target image and include mutually different ranges of the target image and a wide-area image which is an image having an information amount of the target image and includes a range of the target image larger than that included in each of the plurality of narrow-area images, and an information acquiring unit that acquires information correlated with the target image from a learning model to which the plurality of narrow-area images and the wide-area image are input.

Abstract: An information processing method includes preparing first data containing information of a workpiece, information of a product, and information of a plurality of tools used for machining the workpiece to manufacture the product. The information processing method includes instructing a job to generate second data by using the first data. The second data contains information of respective paths for the plurality of tools. The information processing method includes displaying a status of information processing of the job on a display portion after the instructing of the job. The displaying includes displaying, on the display portion, a status of first information processing of calculating a machined shape formed by a first tool included in the plurality of tools and a status of second information processing of calculating a path for the first tool that is performed after the first information processing.

Abstract: The present motor control device includes an inverter, a converter, and a control device. The control device has a rotation speed calculation unit that calculates a rotation speed of a motor; an optimum voltage calculation unit that calculates an optimum input voltage; a minimum voltage calculation unit that calculates a minimum input voltage required to operate the motor at a motor operating point; and a target value setting unit that sets either one of the optimum input voltage and the minimum input voltage as a target input voltage. In a case in which the set target torque exceeds a predetermined value, the target value setting unit sets the minimum input voltage lower than the optimum input voltage as the target input voltage.

Abstract: A gate driving power source device individually supplies a DC power source to a plurality of gate drive circuits provided for a power conversion device. The power conversion device includes a step-up/down converter and one or a plurality of AC/DC conversion circuits. The step-up/down converter includes a step-up/down upper arm switching element and a step-up/down lower arm switching element. The AC/DC conversion circuit includes an AC/DC upper arm switching element and an AC/DC lower arm switching element. The gate driving power source device includes a power source unit that supplies a shared DC power source to at least two of the step-up/down upper arm switching element, the step-up/down lower arm switching element, the AC/DC upper arm switching element, and the AC/DC lower arm switching element.

Abstract: A control device that does not require arithmetic processing of a phase current can be provided. A control device in which a plurality of switching legs including a pair of semiconductor switching elements constituting an upper arm and a lower arm are provided in a number corresponding to the number of phases of a motor that is a load includes a switch short circuit detection unit configured to detect a short circuit failure of the semiconductor switching element, and a control unit configured to execute determination processing of determining whether the short circuit failure has occurred in the upper arm or the lower arm on the basis of a result of detection by the switch short circuit detection unit, and to set all the semiconductor switching elements that constitute an arm in which a short circuit failure has occurred on the basis of a result of the determination processing.

Abstract: A gate driving power source device can be miniaturized by sharing power source units, and a large current can be prevented from locally flowing in a single chip even when a short-circuit failure occurs in a multi-phase conversion circuit included in a power conversion device. There is provided a shared power source unit supplying a shared DC power source to a gate drive circuit provided in any one of a plurality of lower arms of multi-phase conversion circuits or any one of a plurality of upper arms of the multi-phase conversion circuit and gate drive circuits provided in upper arms or lower arms of other conversion circuits.

Abstract: This power conversion device includes a power module that has a plurality of power devices, and a circuit board that is connected to the power module, in which the circuit board has a drive circuit arrangement area in which a plurality of drive circuits for driving the plurality of power devices are disposed and a control circuit arrangement area in which a control circuit for controlling the drive circuit is disposed, and two drive circuit arrangement areas are provided with the control circuit arrangement area interposed therebetween.

Abstract: A power control unit includes a power device, a heat dissipation member disposed to face the power device with an insulating resin member interposed therebetween, and a plurality of plate-shaped bus bars each of which has one end connected to the power device, in which a plurality of input bus bars connected to an input terminal of the power device are provided as the bus bar, and at least one of the plurality of input bus bars is erected so that a direction along a plate width is aligned with a direction along a normal line of a surface of the heat dissipation member facing the power device, and is disposed with respect to the heat dissipation member with the insulating resin member interposed therebetween.

Abstract: A temperature detection device includes: first and second temperature sensors that output temperature signals that are signals corresponding to measured temperatures; a signal conversion circuit that respectively converts the temperature signals, which are output from the first and second temperature sensors, into pulse signals having duty ratios or frequencies corresponding thereto; a multiplexer that selectively outputs one of a plurality of the pulse signals converted by the signal conversion circuit; and an offset unit that offsets the temperature signal, which is output from the first temperature sensor of the first and second temperature sensors, to the signal conversion circuit.

Abstract: The present motor control device includes an inverter, a converter, and a control device. The control device has a rotation speed calculation unit that calculates a rotation speed of a motor; an optimum voltage calculation unit that calculates an optimum input voltage; a minimum voltage calculation unit that calculates a minimum input voltage required to operate the motor at a motor operating point; and a target value setting unit that sets either one of the optimum input voltage and the minimum input voltage as a target input voltage. In a case in which the set target torque exceeds a predetermined value, the target value setting unit sets the minimum input voltage lower than the optimum input voltage as the target input voltage.

Abstract: A power conversion device having a multi-phase converter in which a plurality of chopper circuits each including a switching element and a reactor connected to the switching element are connected in parallel is provided.

Abstract: This power conversion device includes a power module that has a plurality of power devices, and a circuit board that is connected to the power module, in which the circuit board has a drive circuit arrangement area in which a plurality of drive circuits for driving the plurality of power devices are disposed and a control circuit arrangement area in which a control circuit for controlling the drive circuit is disposed, and two drive circuit arrangement areas are provided with the control circuit arrangement area interposed therebetween.

Abstract: A temperature detection device includes: first and second temperature sensors that output temperature signals that are signals corresponding to measured temperatures; a signal conversion circuit that respectively converts the temperature signals, which are output from the first and second temperature sensors, into pulse signals having duty ratios or frequencies corresponding thereto; a multiplexer that selectively outputs one of a plurality of the pulse signals converted by the signal conversion circuit; and an offset unit that offsets the temperature signal, which is output from the first temperature sensor of the first and second temperature sensors, to the signal conversion circuit.

Abstract: A power conversion device includes a multiphase power conversion circuit, a plurality of bus bars which are arranged adjacent to each other, phase currents of the multiphase power conversion circuit flowing through the plurality of bus bars, respectively, a single current sensor configured to detect any of the phase currents in the plurality of bus bars, and a housing which houses the multiphase power conversion circuit, the plurality of bus bars and the current sensor, in which the current sensor includes a magnetic core through which the plurality of bus bars are inserted such that flow directions of the phase currents are the same direction, and which has a single magnetic gap, and a Hall element inserted in the magnetic gap.

Abstract: A power conversion device includes a multiphase power conversion circuit, a plurality of bus bars which are arranged adjacent to each other, phase currents of the multiphase power conversion circuit flowing through the plurality of bus bars, respectively, a single current sensor configured to detect any of the phase currents in the plurality of bus bars, and a housing which houses the multiphase power conversion circuit, the plurality of bus bars and the current sensor, in which the current sensor includes a magnetic core through which the plurality of bus bars are inserted such that flow directions of the phase currents are the same direction, and which has a single magnetic gap, and a Hall element inserted in the magnetic gap.

Abstract: A liquid crystal display system including: a liquid crystal display panel for displaying image data; a semiconductor device including a display driving circuit configured to drive the liquid crystal display panel, said display driving circuit having a function of generating gray scale voltages based on a gamma characteristic curve, said display driving circuit including: an interface circuit coupled to plurality of external terminals for inputting a first, second and third value which define the gamma characteristic curve; a first register configured to store the first value that adjusts an amplitude of the gamma characteristic curve; a second register configured to store the second value that adjusts a gradient of the gamma characteristic curve; a third register configured to store the third value making a micro adjustment of the gamma characteristic curve; and a generation circuit configured to generate the gray scale voltages based on the gamma characteristic curve.

Abstract: A noise level of an output signal is maintained low. An adjacent interference detecting unit compares a signal level of a wide band signal which is a desired station signal of a relatively wide band and a signal level of a narrow band signal which is a desired station signal of a relatively narrow band, and judges that adjacent interference has occurred when the signal level of the narrow band signal is less than or equal to a predetermined level even though the signal level of the wide band signal is greater than or equal to a predetermined level. A variable amplifier (36) attenuates an L?R signal and forms a monophonic signal when the signal level of the narrow band signal is lower than a predetermined level. With this process, when there is adjacent interference, a signal level of the narrow band signal at which the attenuating unit starts attenuating the L?R signal is changed to a relatively high value.