Abstract: In a power supply device, switching section switch a connection between batteries to a series connection or a parallel connection. In a case where the connection between the batteries is switched from the series connection to the parallel connection to charge the batteries by an external charger, a controller does not switch the connection to the parallel connection, does not charge one battery having a larger voltage out of the batteries, and separately charges the other battery when a potential difference between a voltage of the battery and a voltage of the battery is a predetermined threshold value or higher; and the controller switches the connection to the parallel connection and charges the batteries when the potential difference is lower than the threshold value.

Abstract: In a semiconductor module, semiconductor chips are each provided with a drain portion on one of a pair of surfaces facing each other, and a source portion and a gate portion on the other surface. Substrates each include three power supply patterns capable of transmitting power supplied from a power supply, and at least two signal patterns capable of transmitting a control signal. The three power supply patterns and the two signal patterns extend in parallel to each other along a first direction. Among the three power supply patterns, two of them are capable of mounting the semiconductor chips and connectable to the drain portions of the mounted semiconductor chips, and remaining one of them is connectable to the source portions of the semiconductor chips. The two signal patterns are connectable to the gate portions of the semiconductor chips.

Abstract: In a semiconductor module, semiconductor chips are each provided with a drain portion on one of a pair of surfaces facing each other, and a source portion and a gate portion on the other surface. Substrates each include three power supply patterns capable of transmitting power supplied from a power supply, and at least two signal patterns capable of transmitting a control signal. The three power supply patterns and the two signal patterns extend in parallel to each other along a first direction. Among the three power supply patterns, two of them are capable of mounting the semiconductor chips and connectable to the drain portions of the mounted semiconductor chips, and remaining one of them is connectable to the source portions of the semiconductor chips. The two signal patterns are connectable to the gate portions of the semiconductor chips.

Abstract: In a semiconductor module, semiconductor chips are each provided with a drain portion on one of a pair of surfaces facing each other, and a source portion and a gate portion on the other surface. Substrates each include three power supply patterns capable of transmitting power supplied from a power supply, and at least two signal patterns capable of transmitting a control signal. The three power supply patterns and the two signal patterns extend in parallel to each other along a first direction. Among the three power supply patterns, two of them are capable of mounting the semiconductor chips and connectable to the drain portions of the mounted semiconductor chips, and remaining one of them is connectable to the source portions of the semiconductor chips. The two signal patterns are connectable to the gate portions of the semiconductor chips.

Abstract: In a power supply device, switching section switch a connection between batteries to a series connection or a parallel connection. In a case where the connection between the batteries is switched from the series connection to the parallel connection to charge the batteries by as external charger, a controller does not switch the connection to the parallel connection, does not charge one battery having a larger voltage out of the batteries, and separately charges the other battery when a potential difference between a voltage of the battery and a voltage of the battery is a predetermined threshold value or higher; and the controller switches the connection to the parallel connection and charges the batteries when the potential difference is lower than the threshold value.

Abstract: Provided are a rewriting system capable of shortening rewrite time, a rewriting system and a computer used for the rewriting system. The rewriting system includes an ECU and a rewriting device for at least transmitting to the ECU a rewrite data of memory contents stored in a flash ROM 14B (memory), the flash ROM 14B (memory) includes a rewrite target area A2 in which the memory contents to be rewritten are stored and a non-rewrite target area A1 in which the memory contents not to be rewritten are stored, and the rewriting device transmits the rewrite data of the memory contents to the ECU only for the memory contents of the rewrite target area in the flash ROM 14B (memory).

Abstract: An ID setting device includes: an output circuit configured to output, as serial data, an ID to be set in an ECU, which is an ID setting target; an input circuit to which an ID that is set is input as serial data from the ECU; and a control unit configured to check the ID output by the output circuit and the ID input to the input circuit against each other. The serial data has a duty cycle which is according to setting data on a per bit basis.

Abstract: When an anomaly is determined in the transition of ECUs to a power saving state, a power supply control system sequentially turns on current supply switches while keeping a bypass switch on. A monitoring controller determines an anomaly in the transition of the ECUs to a power saving state on the basis of whether the dark current in the ECUs calculated from the amount of change at that time in the current in the power supply line is greater than an ordinary dark current. Further, in the startup state of the ECUs, power from a power supply can be supplied to the ECUs via the power supply line and individual supply lines.

Abstract: A microcomputer equally divides the circumference of a RGB circle into 6×n (n is an integer of 1 or more) parts, and calculates a RGB value of each divided color. (255, 0, 0) is stored as a reference RGB value of a reference color in a ROM in the microcomputer. The microcomputer 3 converts the reference RGB value depending on an angular difference on the RGB circle between a designated color whose RGB value is to be found and the reference color, and assumes the converted RGB value as a RGB value of the designated color.

Abstract: An ID setting device includes: an output circuit configured to output, as serial data, an ID to be set in an ECU, which is an ID setting target; an input circuit to which an ID that is set is input as serial data from the ECU; and a control unit configured to check the ID output by the output circuit and the ID input to the input circuit against each other. The serial data has a duty cycle which is according to setting data on a per bit basis.

Abstract: When supplying electric power to a load from a power supply via a parallel circuit of two electrical wires having the same wiring resistance, a vehicular power supply control device uses a current measurement unit in intelligent power devices (IPDs) to measure a passing current flowing in a semiconductor switching device in each of the electrical wires. Then, in order to match the temperatures of the electrical wires as estimated by a present temperature estimation unit base on the measured current, a target duty ratio in a PWM control for reducing the passing current in the semiconductor switching device of the IPD on one electrical wire is calculated in a target duty ratio calculation unit, and the semiconductor switching device of the one IPD is turned on and off by a PWM/DC control and shutoff determination unit with the calculated target duty ratio.

Abstract: A vehicle load control device repeats a determination state in which at least one of a plurality of switching elements is turned off from an initial state in which the switching elements are all in an ON state until all of the switching elements have different ON/OFF states, and determines a connection form for each connection portion based on the change between an initial current value detected in the initial state and a determination current value detected for each determination state.

Abstract: Provided are a rewriting system capable of shortening rewrite time, a rewriting system and a computer used for the rewriting system. The rewriting system includes an ECU and a rewriting device for at least transmitting to the ECU a rewrite data of memory contents stored in a flash ROM 14B (memory), the flash ROM 14B (memory) includes a rewrite target area A2 in which the memory contents to be rewritten are stored and a non-rewrite target area A1 in which the memory contents not to be rewritten are stored, and the rewriting device transmits the rewrite data of the memory contents to the ECU only for the memory contents of the rewrite target area in the flash ROM 14B (memory).

Abstract: A vehicle load control device repeats a determination state in which at least one of a plurality of switching elements is turned off from an initial state in which the switching elements are all in an ON state until all of the switching elements have different ON/OFF states, and determines a connection form for each connection portion based on the change between an initial current value detected in the initial state and a determination current value detected for each determination state.

Abstract: A luminance control device and a luminance control method for controlling luminance of a light emitting member are provided in order to reduce the amount of information to be stored while preventing the user from feeling uncomfortable. The CPU divides by the interpolation division number a value obtained subtracting the reference duty ratio from the reference duty ratio so as to calculate an interpolation variation width, and integrates the interpolation variation width to the reference duty ratio every time the interpolation period elapses, and the variation width in the luminance of the LED is therefore reduced, preventing users to feel uncomfortable, which allows for suppressing the amount of information to be stored.

Abstract: A luminance control device and a luminance control method for controlling luminance of a light emitting member are provided in order to reduce the amount of information to be stored while preventing the user from feeling uncomfortable. The CPU divides by the interpolation division number a value obtained subtracting the reference duty ratio from the reference duty ratio so as to calculate an interpolation variation width, and integrates the interpolation variation width to the reference duty ratio every time the interpolation period elapses, and the variation width in the luminance of the LED is therefore reduced, preventing users to feel uncomfortable, which allows for suppressing the amount of information to be stored.

Abstract: A load drive circuit shuts off power supply to a load when a semiconductor relay is off. The load drive circuit includes: the semiconductor relay which is turned off when a predetermined operation voltage cannot be secured; a low-voltage detection circuit which detects that the operation voltage is a predetermined value or less; a negative-voltage generation circuit which generates a negative voltage; and a switch unit which is turned on and connects between the negative-voltage generation circuit and a ground terminal of the semiconductor relay, in a case where the low-voltage detection circuit detects that the operation voltage is the predetermined value or less.

Abstract: When supplying electric power to a load from a power supply via a parallel circuit of two electrical wires having the same wiring resistance, a vehicular power supply control device uses a current measurement unit in intelligent power devices (IPDs) to measure a passing current flowing in a semiconductor switching device in each of the electrical wires. Then, in order to match the temperatures of the electrical wires as estimated by a present temperature estimation unit base on the measured current, a target duty ratio in a PWM control for reducing the passing current in the semiconductor switching device of the IPD on one electrical wire is calculated in a target duty ratio calculation unit, and the semiconductor switching device of the one IPD is turned on and off by a PWM/DC control and shutoff determination unit with the calculated target duty ratio.

Abstract: A microcomputer equally divides the circumference of a RGB circle into 6×n (n is an integer of 1 or more) parts, and calculates a RGB value of each divided color. (255, 0, 0) is stored as a reference RGB value of a reference color in a ROM in the microcomputer. The microcomputer 3 converts the reference RGB value depending on an angular difference on the RGB circle between a designated color whose RGB value is to be found and the reference color, and assumes the converted RGB value as a RGB value of the designated color.

Abstract: When an anomaly is determined in the transition of ECUs to a power saving state, a power supply control system sequentially turns on current supply switches while keeping a bypass switch on. A monitoring controller determines an anomaly in the transition of the ECUs to a power saving state on the basis of whether the dark current in the ECUs calculated from the amount of change at that time in the current in the power supply line is greater than an ordinary dark current. Further, in the startup state of the ECUs, power from a power supply can be supplied to the ECUs via the power supply line and individual supply lines.