Patent ID: 6885173
Filing Date: 2005-04-26
Classification: H02M

Abstract:
1. An aim-short diagnostic method for a bi-directional DC/DC converter including a buck switching device, a buck diode, a boost switching device, and a boost diode, the method comprising: detecting an output current of the bi-directional DC/DC converter; determining whether the output current is detected in a positive direction; maintaining supply of a turn-off gating signal to the boost switching device, and supplying a turn-on gating signal to the buck switching device, if it is determined that the output current is detected in the positive direction; determining whether the output current of the bi-directional DC/DC converter increases in a positive direction; and determining that at least one of the boost switching device and the buck diode is in a short circuit state if it is determined that the output current of the bi-directional DC/DC converter does not increase in the positive direction.