Patent ID: 7471069
Filing Date: 2008-12-30
Classification: B60W,F02D,F02N,H02M,Y02T

Abstract:
1. A voltage generator device comprising: a voltage generating portion that receives an input voltage and generates a target voltage; an observing portion that observes an operating condition of the voltage generating portion; and a control portion which causes the voltage generating portion to maintain a voltage generating operation even if the operating condition observed by the observing portion is within a first region that is apart from a normal region, and which causes the voltage generating portion to stop the voltage generating operation if the operating condition observed is within a second region that is further apart from the normal region than the first region is, wherein the voltage generator device is capable to attain a voltage compensation by raising an output voltage when a battery voltage decreases at the time of restart of an engine after an idle stop, wherein, if an output current exceeds a first value of current, the output voltage is reduced, or if the output voltage exceeds a first value of voltage, a switching operation of the voltage generating portion is intermittently performed.