The present invention relates to a vehicle power controlling apparatus, and more particularly, to a vehicle power controlling apparatus for interrupting a dark current from an ECU power front stage of a motor driven power steering (MDPS) system. The vehicle power controlling apparatus includes: a power control signal receiving block configured to receive a power control signal (for example, a vehicle ignition signal IGN_ENA); a dark current preventing block configured to prevent a power voltage Vbat from flowing before the power control signal from a next stage of the power control signal receiving block; a relay block that is relayed on or off when the power voltage is turned on or off to supply a current to the motor from the power voltage; a relay shortening block configured to shorten the relay-on time by rapidly increasing the voltage before the relay is turned on of the relay block, between the dark current preventing block and the relay block; and a relay recognizing block configured to recognize the relay on or the relay off by reducing the voltage after a relay on signal or relay off signal which is applied to the relay block.
Vehicle power controlling apparatus
02.02.2016
Patent
Elektronische Ressource
Englisch
Apparatus for controlling power transmission of vehicle
Europäisches Patentamt | 2023