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Electronic control device

  • US 9,796,275 B2
  • Filed: 02/06/2015
  • Issued: 10/24/2017
  • Est. Priority Date: 02/26/2014
  • Status: Active Grant
First Claim
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1. A vehicular electronic control device, which is activated when a main switch of a vehicle turns on, and is activated according to a wake-up signal from an external device when the main switch is in an off state, the vehicular electronic control device comprising:

  • a microcomputer;

    a voltage generating circuit that generates an operation voltage for operating the microcomputer;

    a start circuit that starts controlling the voltage generating circuit to generate the operation voltage when an on-state signal of the main switch or the wake-up signal of the external device is input;

    a printed wiring board that mounts the microcomputer, the voltage generating circuit, and the start circuit; and

    a transmission wiring pattern that transmits the on-state signal of the main switch, and is arranged on the printed wiring board,wherein the printed wiring board has a rectangular shape, which includes a first region and a second region,wherein the first region mounts the microcomputer and the voltage generating circuit, which activate the vehicular electronic control device when the main switch turns on,wherein the second region mounts the start circuit, which activates the vehicular electronic control device according to the wake-up signal,wherein the transmission wiring pattern extends from the first region to reach the second region,wherein the start circuit includes a switch that is arranged in a connection wiring pattern for connecting between a vehicular battery and a power source terminal of the voltage generating circuit,wherein the start circuit controls the switch to turn on when the on-state signal or the wake-up signal is input,wherein the transmission wiring pattern has an end, which is retrieved from the printed wiring board to be connected to the vehicular battery via the main switch, andwherein the transmission wiring pattern is arranged to pass close to the connection wiring pattern to be connectable with a jumper element in the first region.

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