Abstract: To prevent both increase in impedance and a short circuit, a connector cable is configured such that a connector and a shielded cable are connected via a relay substrate. The shielded cable includes at least an inner conductor, a dielectric covering the inner conductor, and a shield member covering the dielectric. The inner conductor is connected to a contact of the connector at a part where the shield member and the dielectric are removed to expose the inner conductor. At least directly under a part where the shield member is removed to expose the dielectric, a ground (GND) conductor layer on a front surface of the relay substrate is arranged. The GND conductor layer on the front surface of the relay substrate, which is arranged directly under the part where the shield member is removed, is covered with an insulating member.

Abstract: A voltage monitoring module including a first input terminal coupled to a high-voltage-side terminal of a battery cell through a first path including an external resistor, a first terminal coupled to the high-voltage-side terminal of the battery cell through a second path; a first switch coupled to the first input terminal, a second switch coupled to the first terminal; a second input terminal and a second terminal coupled to a low-voltage-side terminal of the battery cell, a third switch that is coupled to the second input terminal; a fourth switch that is coupled to the second terminal, and a control circuit that controls ON/OFF of the first through fourth switches, wherein an element that suppresses fluctuation of a voltage input to the first switch through the first input terminal that is coupled between the first switch and a fixed voltage.

Abstract: In a voltage monitoring system, a voltage monitoring module includes an adjusting current control circuit to generate an adjusting current so that the operating current consumed by the voltage monitoring modules reaches a specified value corresponding to a first operation current setting command, and stops generating the adjusting current according to an operating current switching command; and an operating current measurement circuit to measure the operating current according to the operating current measuring command following the operating current switching command; and in which a module control circuit sends a second operation current setting command based on the operating current that was measured, and the adjusting current control circuit generates an adjusting current so that the operating current reaches a specified value corresponding to the second operating current setting command.

Abstract: A voltage monitoring module includes a first terminal configured to be coupled to a high-potential-side terminal of a first battery cell, and a second terminal configured to be coupled to a low-potential-side of the first battery cell.

Abstract: A band gap reference circuit includes a first bipolar transistor and a second bipolar transistor that are coupled to a first power supply terminal and a second power supply terminal, each base of the first bipolar transistor and the second bipolar transistor being coupled to an output terminal, a first resistor that is coupled to the second power supply terminal and the first bipolar transistor, a second resistor and a third resistor that are coupled to an end of the first bipolar transistor of the first resistor and the second bipolar transistor in series, a ninth resistor that is coupled to the first power supply terminal and a collector of the first bipolar transistor, a tenth resistor that is coupled to the first power supply terminal and a collector of the second bipolar transistor, and an amplifier is coupled to the collector of the first bipolar transistor.

Abstract: A voltage monitoring module including a first input terminal coupled to a high-voltage-side terminal of a battery cell through a first path including an external resistor, a first terminal coupled to the high-voltage-side terminal of the battery cell through a second path; a first switch coupled to the first input terminal, a second switch coupled to the first terminal; a second input terminal and a second terminal coupled to a low-voltage-side terminal of the battery cell, a third switch that is coupled to the second input terminal; a fourth switch that is coupled to the second terminal, and a control circuit that controls ON/OFF of the first through fourth switches, wherein an element that suppresses fluctuation of a voltage input to the first switch through the first input terminal that is coupled between the first switch and a fixed voltage.

Abstract: A band gap reference circuit includes a first bipolar transistor and a second bipolar transistor that are coupled to a first power supply terminal and a second power supply terminal, each base of the first bipolar transistor and the second bipolar transistor being coupled to an output terminal, a first resistor that is coupled to the second power supply terminal and the first bipolar transistor, a second resistor and a third resistor that are coupled to an end of the first bipolar transistor of the first resistor and the second bipolar transistor in series, a ninth resistor that is coupled to the first power supply terminal and a collector of the first bipolar transistor, a tenth resistor that is coupled to the first power supply terminal and a collector of the second bipolar transistor, and an amplifier is coupled to the collector of the first bipolar transistor.

Abstract: The voltage monitoring module includes an input terminal, a cell balancing input terminal, a switch, and a control circuit. The input terminal is coupled to a high-voltage-side terminal of a battery cell through a filter resistor. The cell balancing input terminal is coupled to the high-voltage-side terminal of the battery cell. The switch is coupled to the input terminal. The control circuit- controls ON/OFF of the switch. A filter resistor is coupled between the switch and a ground. The control circuit turns on the switch, so that a high-voltage-side voltage is compared with a low-voltage-side voltage.

Abstract: A vehicle system, includes a battery state monitoring module including a battery state monitoring device for measuring a current monitor voltage value that varies according to a current value flowing through a current detecting resistance coupled to power supply terminals of a battery, and an arithmetic circuit that determines a state of the battery based on the current monitor voltage value measured by the battery state monitoring device and transmits the determination result at a request from a high-order system, and a central control unit for outputting an internal ignition signal that directs start and stop of a engine to an electronic load circuit for controlling the engine and a starter, the battery state monitoring device carries out a short-circuit test operation for testing a short circuit state between two external terminals coupled to two ends of the current detecting resistance, and a current monitoring operation of measuring.

Abstract: A bandgap reference circuit includes a first temperature correction circuit that is connected between a power supply terminal and a node between a first resistor and a second resistor. The first temperature correction circuit includes a first transistor that is connected between the first power supply terminal and the node between the first resistor and the second resistor, a control terminal of the first transistor being connected at a junction where the end of a first bipolar transistor connects together with a third resistor, and a fourth resistor that is connected in series between the first transistor and the first power supply terminal.

Abstract: In a voltage monitoring system, a voltage monitoring module includes an adjusting current control circuit to generate an adjusting current so that the operating current consumed by the voltage monitoring modules reaches a specified value corresponding to a first operation current setting command, and stops generating the adjusting current according to an operating current switching command; and an operating current measurement circuit to measure the operating current according to the operating current measuring command following the operating current switching command; and in which a module control circuit sends a second operation current setting command based on the operating current that was measured, and the adjusting current control circuit generates an adjusting current so that the operating current reaches a specified value corresponding to the second operating current setting command.

Abstract: In a voltage monitoring system, a voltage monitoring module includes an adjusting current control circuit to generate an adjusting current so that the operating current consumed by the voltage monitoring modules reaches a specified value corresponding to a first operation current setting command, and stops generating the adjusting current according to an operating current switching command; and an operating current measurement circuit to measure the operating current according to the operating current measuring command following the operating current switching command; and in which a module control circuit sends a second operation current setting command based on the operating current that was measured, and the adjusting current control circuit generates an adjusting current so that the operating current reaches a specified value corresponding to the second operating current setting command.

Abstract: A vehicle system, includes a battery state monitoring module including a battery state monitoring device for measuring a current monitor voltage value that varies according to a current value flowing through a current detecting resistance coupled to power supply terminals of a battery, and an arithmetic circuit that determines a state of the battery based on the current monitor voltage value measured by the battery state monitoring device and transmits the determination result at a request from a high-order system, and a central control unit for outputting an internal ignition signal that directs start and stop of a engine to an electronic load circuit for controlling the engine and a starter, the battery state monitoring device carries out a short-circuit test operation for testing a short circuit state between two external terminals coupled to two ends of the current detecting resistance, and a current monitoring operation of measuring.

Abstract: A voltage monitoring module includes a first terminal configured to be coupled to a high-potential-side terminal of a first battery cell, and a second terminal configured to be coupled to a low-potential-side of the first battery cell.

Abstract: A semiconductor device has a first and a second external terminals coupled to power supply wiring that couples one end of a current detecting resistance and a power supply terminal of a battery, a third external terminal coupled to an other end of the current detecting resistance, and a control circuit for controlling an output of a second measurement current destined to the third external terminal, and measures a voltage difference between the first external terminal and the second external terminal.

Abstract: A voltage monitoring module includes voltage control circuits each connected between two adjacent input terminals and causing a current to flow to generate a voltage drop when a voltage of a k-th input terminal counted from a high potential side is higher than a voltage of a (k?1)-th input terminal; and a disconnection detection circuit that detects a disconnection between battery cells and m input terminals. The disconnection detection circuit includes an activation circuit that controls a flow of m currents flowing between the m input terminals and a ground terminal; (m?1) first switches having one end connected to each of second to m-th input terminals, and a control terminal connected to each of first to (m?1)-th input terminals, and turning on when a voltage applied to the control terminal is smaller than a predetermined value; and a memory unit connected to another end of the (m?1) first switches.

Abstract: A bandgap reference circuit includes a first temperature correction circuit that is connected between a power supply terminal and a node between a first resistor and a second resistor. The first temperature correction circuit includes a first transistor that is connected between the first power supply terminal and the node between the first resistor and the second resistor, a control terminal of the first transistor being connected at a junction where the end of a first bipolar transistor connects together with a third resistor, and a fourth resistor that is connected in series between the first transistor and the first power supply terminal.

Abstract: A BGR circuit includes a first bipolar transistor and a second bipolar transistor that are connected between a power supply terminal and a ground terminal, each base of the first bipolar transistor and the second bipolar transistor being connected to an output terminal. A first resistor is connected between the ground terminal and the first bipolar transistor. A second resistor and a third resistor are connected in series between the first resistor and the second bipolar transistor. A temperature correction circuit is connected between the ground terminal and a node between the second resistor and the third resistor, and includes a first transistor having a base connected to an end of the first bipolar transistor of the first resistor. The temperature correction circuit further includes a fourth resistor connected in series to the first transistor.

Abstract: A semiconductor device including a bus communication transceiver configured to be adopted in an automobile, including a transmission circuit to receive an input signal from an input node and generate a transmission signal; a bus connection node to couple with an external single wire bus to transmit the transmission signal to the external single wire bus and to receive a reception signal from the external single wire bus, the external single wire bus being coupled with an on-board battery of the automobile; a reception circuit to receive the reception signal or the transmission signal from the single wire bus to generate an output signal; and a delay time measurement circuit to measure a delay time from a rising time of the input signal to a rising time of the output signal generated from the input signal, and to generate a delay time measurement result signal group.

Abstract: A semiconductor device including a bus communication transceiver configured to be adopted in an automobile, including a transmission circuit to receive an input signal from an input node and generate a transmission signal; a bus connection node to couple with an external single wire bus to transmit the transmission signal to the external single wire bus and to receive a reception signal from the external single wire bus, the external single wire bus being coupled with an on-board battery of the automobile; a reception circuit to receive the reception signal or the transmission signal from the single wire bus to generate an output signal; and a delay time measurement circuit to measure a delay time from a rising time of the input signal to a rising time of the output signal generated from the input signal, and to generate a delay time measurement result signal group.