AUTOMOBILE DC-DC CONVERTER HAVING AUTOMOBILE NOISE FILTER FUNCTION

摘要

A vehicle DC-DC converter with a vehicle noise filter function is posted. The vehicle DC-DC converter of the present invention converts and outputs the first DC voltage output through the AC-DC converter receiving the AC voltage generated from the AC generator of the vehicle into a second DC voltage having a stable predetermined voltage level. . The second DC voltage output from the DC-DC converter is provided to the portable electronic device. The DC-DC converter has a structure in which the ground of the input terminal and the output terminal is separated to prevent noise generated from the alternator of the vehicle from being transmitted to the portable electronic device through the ground. In addition, the DC-DC converter provides a stable voltage to the portable electronic device by performing a DC-DC conversion in a pulse width modulation control method.