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
2016-02-02
Patent
Electronic Resource
English
European Patent Office | 2018
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