DC/DC CONVERTER WITH VARIABLE OUTPUT VOLTAGE

摘要

A DC/DC converter includes a transformer having a primary winding electrically connected to a resonant network and a secondary winding having a plurality of taps including a common tap, a first tap, and a second tap. The DC/DC converter further includes a plurality of rectifier circuits including a first rectifier circuit electrically connected to the common tap, a second rectifier circuit electrically connected to the first tap, and a third rectifier circuit electrically connectable to the second tap. The DC/DC converter also includes a switch electrically connected between the second tap and the third rectifier circuit. The switch is operable to electrically connect and disconnect the third rectifier circuit from the second tap.

主权项

1. A DC/DC converter configured to receive an input voltage and to output an output voltage, said DC/DC converter comprising:
a bridge circuit configured to receive said input voltage and including at least one pair of power switches; a resonant network driven by the bridge circuit; a transformer having a primary winding electrically connected to the resonant network and a secondary winding having a plurality of taps including a common tap, a first tap, and a second tap; a plurality of rectifier circuits configured to output said output voltage, said rectifier circuits including a first rectifier circuit electrically connected to said common tap, a second rectifier circuit electrically connected to said first tap, and a third rectifier circuit electrically connectable to said second tap; a switch electrically connected between said second tap and said third rectifier circuit, wherein said switch is operable to electrically connect and disconnect said third rectifier circuit from said second tap; and a control unit configured to control switching of said at least one pair of power switches.