Electronic control device and ground line routing method
AssigneeHitachi Astemo, Ltd.
InventorsAkira Ishii, Tomio Sakashita
Life of this patent
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Abstract
An electronic control device includes a plurality of circuit boards that transmit signals to each other and a power supply connector for direct-current power. A ground line connected to a ground terminal of the power supply connector is connected to a ground of one of the plurality of circuit boards by way of a ground of another one of the plurality of circuit boards. In this way, the electronic control device including the plurality of circuit boards needs fewer noise reduction components while enabling easier routing of ground lines.
Claims11
An electronic control device comprising:
- a plurality of circuit boards that transmit signals to each other;
- and
- a power supply connector for direct-current power,
- wherein a ground line connected to a ground terminal of the power supply connector is connected to a ground of one of the plurality of circuit boards by way of a ground of another one of the plurality of circuit boards,
- wherein a power supply terminal of the power supply connector is connected only to the circuit board to which the ground terminal of the power supply connector is directly connected, and
- wherein a power supply line that supplies an input power source from the another one of the circuit boards to the one of the circuit boards and the corresponding ground line are disposed close to each other between the plurality of circuit boards.
A ground line routing method for an electronic control device including a plurality of circuit boards that transmit signals to each other and a power supply connector for direct-current power, the method comprising:
- connecting a ground line connected to a ground terminal of the power supply connector to a ground of one of the plurality of circuit boards by way of a ground of another one of the plurality of circuit boards,
- connecting a power supply terminal of the power supply connector only to the circuit board to which the ground terminal of the power supply connector is directly connected, and
- disposing a power supply line that supplies an input power source from the another one of the circuit boards to the one of the circuit boards and the corresponding ground line close to each other between the plurality of circuit boards.
Dependencies are inferred from the claim text.