×

Dual-transformer type of DC-to-DC converter

  • US 7,746,670 B2
  • Filed: 10/04/2007
  • Issued: 06/29/2010
  • Est. Priority Date: 10/04/2006
  • Status: Active Grant
First Claim
Patent Images

1. A two-transformer type of DC-to-DC converter comprisinga first transformer having a first winding, a second winding and a third winding, and a second transformer having a fourth winding, a fifth winding and a sixth winding, with respective first ends of said first and fourth windings connected to form a first winding pair, respective first ends of said second and fifth windings connected to form a second winding pair, and respective second ends of said fourth and fifth windings connected together,a first DC terminal and second DC terminal for connecting said DC-to-DC converter to a first external circuit, and a third DC terminal and fourth DC terminal for connecting said DC-to-DC converter to a second external circuit,a first AC/DC conversion circuit connected between said first and second DC terminals and said first, second, fourth and fifth windings, for performing conversion between DC electrical power and AC electrical power,a second AC/DC conversion circuit connected between said third and fourth DC terminals and said second and third windings, for performing conversion between DC electrical power and AC electrical power, anda control circuit adapted to control said conversion operations of said first A/D converter and said second AC/DC conversion circuit;

  • wherein said first AC/DC conversion circuit comprises;

    a first switching element controlled to periodically switch between closed and opened states for respectively connecting and disconnecting said first DC terminal to/from a junction of said second ends of the fourth and fifth windings,a second switching element controlled to periodically switch between said opened and closed states for respectively connecting and disconnecting said second DC terminal to/from said junction,a first capacitor connected between said first DC terminal and a second end of said second winding, anda second capacitor connected between said second DC terminal and a second end of said first winding.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×