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US 6,785,106 B2Granted
Integrate circuit device
AssigneeDenso Corporation
InventorJunichi Nagata
Life of this patent
Estimating the term…
Abstract
An integrated circuit device includes an output terminal for connection with a terminal of an external load, and first and second power supply terminals for connection with a terminal of an external power supply. A switching element is connected between the output terminal and the first power supply terminal. The switching element, the external load, and the external power supply form a load current flow path. An impedance circuit is connected between the output terminal and the second power supply terminal. An abnormality detection circuit operates for monitoring a voltage at the output terminal, and detecting an abnormal condition on the basis of the monitored voltage. A drive control circuit operates for driving and controlling the switching element.
Claims21
An integrated circuit device comprising:
- an output terminal for connection with a terminal of an external load;
- first and second power supply terminals for connection with the same terminal of an external power supply;
- a switching element connected between the output terminal and the first power supply terminal, wherein the switching element, the external load, and the external power supply form a load current flow path;
- an impedance circuit connected between the output terminal and the second power supply terminal;
- an abnormality detection circuit for monitoring a voltage at the output terminal, and detecting an abnormal condition on the basis of the monitored voltage;
- and
- a drive control circuit for driving and controlling the switching element.
4 more elements
An integrated circuit device comprising:
- first and second output terminals for connection with a terminal of an external load;
- a power supply terminal for connection with a terminal of an external power supply;
- a switching element connected between the first output terminal and the power supply terminal, wherein the switching element, the external load, and the external power supply form a load current flow path;
- an impedance circuit connected between the second output terminal and the power supply terminal;
- an abnormality detection circuit for monitoring a voltage at the first and second output terminals, and detecting an abnormal condition on the basis of the monitored voltage;
- and
- a drive control circuit for driving and controlling the switching element.
4 more elements
An integrated circuit device comprising:
- a package having an output terminal for connection with a terminal of an external load, and a power supply terminal for connection with one terminal of an external power supply;
- and
- a chip hermetically provided in the package and having an output-purpose pad and first and second power-supply-purpose pads, the output-purpose pad being connected to the output terminal of the package, the first and second power-supply-purpose pads being connected to the power supply terminal of the package;
- wherein the chip comprises:
- (1) a switching element connected between the output-purpose pad and the first power-supply-purpose pad, wherein the switching element, the external load, and the external power supply form a load current flow path;
- (2) an impedance circuit connected between the output-purpose pad and the second power-supply-purpose pad;
- (3) an abnormality detection circuit for monitoring a voltage at the output-purpose pad, and detecting an abnormal condition on the basis of the monitored voltage;
- and
- (4) a drive control circuit for driving and controlling the switching element.
6 more elements
An integrated circuit device comprising:
- a package having an output terminal for connection with a terminal of an external load, and a power supply terminal for connection with a terminal of an external power supply;
- and
- a chip hermetically provided in the package and having first and second output-purpose pads and a power-supply-purpose pad, the first and second output-purpose pads being connected to the output terminal of the package, the power-supply-purpose pad being connected to the power supply terminal of the package;
- wherein the chip comprises:
- (1) a switching element connected between the first output-purpose pad and the power-supply-purpose pad, wherein the switching element, the external load, and the external power supply form a load current flow path;
- (2) an impedance circuit connected between the second output-purpose pad and the power-supply-purpose pad;
- (3) an abnormality detection circuit for monitoring a voltage at the first and second output-purpose pads, and detecting an abnormal condition on the basis of the monitored voltage;
- and
- (4) a drive control circuit for driving and controlling the switching element.
6 more elements
An integrated circuit device comprising:
- an output terminal for connection with a terminal of an external load;
- a power supply terminal for connection with a terminal of an external power supply;
- a switching element connected between the output terminal and the power supply terminal, wherein the switching element, the external load, and the external power supply form a load current flow path;
- an impedance circuit and a switch circuit connected in series between the output terminal and the power supply terminal;
- an abnormality detection circuit for monitoring a voltage at the output terminal, and detecting an abnormal condition on the basis of the monitored voltage;
- a drive control circuit for driving and controlling the switching element;
- and
- a switch control circuit for setting the switch circuit in a closed state under a condition that the drive control circuit is fed with an operation-purpose power supply voltage.
5 more elements
An integrated circuit device comprising:
- an output terminal for connection with a terminal of an external load;
- a power supply terminal for connection with a terminal of an external power supply;
- a switching element connected between the output terminal and the power supply terminal, wherein the switching element, the external load, and the external power supply form a load current flow path;
- an abnormality detection circuit for monitoring a voltage at the output terminal, and detecting an abnormal condition on the basis of the monitored voltage;
- a drive control circuit for driving and controlling the switching element;
- and
- a constant-current circuit connected between the output terminal and the power supply terminal for generating a constant current under a condition that the drive control circuit is fed with an operation-purpose power supply voltage.
4 more elements
An integrated circuit device comprising:
- a circuit board having a wiring pattern;
- an integrated circuit having an output terminal for connection with a terminal of an external load, and first and second power supply terminals for connection with a terminal of an external power supply, the first and second power supply terminals being separated and disconnected from each other when the integrated circuit is separated from the circuit board, the first and second power supply terminals being connected to each other by the wiring pattern of the circuit board when the integrated circuit is mounted on the circuit board;
- a switching transistor contained in the integrated circuit and being connected between the output terminal and the first power supply terminal, wherein the switching transistor, the external load, and the external power supply form a load current flow path;
- and
- a pull-down resistor contained in the integrated circuit and being connected between the output terminal and the second power supply terminal.
2 more elements
An integrated circuit device comprising:
- a circuit board having a wiring pattern;
- an integrated circuit having first and second output terminals for connection with a terminal of an external load, and a power supply terminal for connection with a terminal of an external power supply, the first and second output terminals being separated and disconnected from each other when the integrated circuit is separated from the circuit board, the first and second output terminals being connected to each other by the wiring pattern of the circuit board when the integrated circuit is mounted on the circuit board:
- a switching transistor contained in the integrated circuit and being connected between the first output terminal and the power supply terminal, wherein the switching transistor, the external load, and the external power supply form a load current flow path;
- and
- a pull-down resistor contained in the integrated circuit and being connected between the second output terminal and the power supply terminal.
2 more elements
Dependencies are inferred from the claim text.