Two-phase dual-active-bridge DC-DC converter with wide input range

A converter comprising:

• first and second high-voltage (HV) terminals;
• first and second low-voltage (LV) terminals;
• a first phase including:
• a first transformer including a first primary winding and a first secondary winding;
• first and second HV legs arranged in an H-bridge and connected between the first and the second HV terminals and the first primary winding;
• and
• first and second LV legs arranged in an H-bridge and connected between the first secondary winding and the first and second LV terminals;
• a second phase including:
• a second transformer including a second primary winding and a second secondary winding;
• first and second HV legs arranged in an H-bridge and connected between the first and the second HV terminals and the second primary winding;
• and
• first and second LV legs arranged in an H-bridge and connected between the second secondary winding and the first and second LV terminals;
• and
• a switch connected between the first primary winding and the second primary winding;
• wherein
• the switch connects in series and disconnects the first and the second primary windings.