| 摘要 |
A power system for a vehicle is provided to reduce the manufacturing cost by charging a charge pump initial driving voltage generated through a mini-diode and a mini-resistance. A power system for a vehicle comprises a charge pump circuit(40) and a charging unit(50). The charge pump circuit includes a first capacitor(46) that provides a charge pump with driving voltage. The charging unit allows initial driving voltage, which drives the charge pump, to be stored in the first capacitor. The charge pump circuit includes a converter(42), a driving IC and a power port. The converter charges a first battery(10) and a second battery(20) based on power of an alternator(30). The driving IC is connected to a side of the first capacitor to drive the converter. The power port provides control power to the driving IC.
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