| 摘要 |
<P>PROBLEM TO BE SOLVED: To protect a pilot signal input buffer arranged in a stage preceding a processor such a CPU to which a pilot signal is input. <P>SOLUTION: An electronic control device, which receives a pilot signal from a charge cable prior to power supply when a vehicle chargeable via an external power source is connected to the external power source through the charge cable, consists of a pilot voltage setting circuit which changes a voltage of the pilot signal in a stepwise manner, a processor which performs a process required for charge control on the basis of the pilot signal and controls the pilot voltage setting circuit to change the voltage of the pilot signal, an input buffer which is disposed in a stage preceding a pilot signal input port of the processor, and an input buffer voltage setting circuit which changes an input voltage of the input buffer to fall within a recommended input voltage range of the input buffer in response to a voltage change of the pilot signal. <P>COPYRIGHT: (C)2013,JPO&INPIT |
