Patent ID: 7622825

Claim:
A wide-voltage-range converter, comprising a power-supply-side converter unit having a DC output side, n load-side converter units each having a DC input side, and an n-channel step-up/step-down converter device having n transformers, wherein the n-channel step-up/step-down converter device electrically connects the DC output side of the power-supply-side converter unit to respective DC input sides of the n load-side converter units, wherein a power supply side of the n-channel step-up/step-down converter device comprises a half-bridge circuit having two turn-off semiconductor switches, two capacitors electrically connected in series, with the series connection electrically connected in parallel with the half-bridge circuit, wherein a load side of the n-channel step-up/step-down converter device comprises n half-bridge circuits each having two turn-off semiconductor switches and two capacitors electrically connected in series, with the series-connection connected in parallel with a corresponding one of the half-bridge circuits, wherein a first terminal of a primary winding of each of the n transformers is connected to a corresponding terminal of the two turn-off semiconductor switches of the half-bridge circuit on the power supply side and a second terminal of the primary winding of each of the n transformers is connected to a terminal connecting the two capacitors on the power supply side, and wherein a first terminal of a secondary winding of each of the n transformers is connected to a corresponding terminal of the two turn-off semiconductor switches of the half-bridge on the load side and a second terminal of the secondary winding of each of the n transformers is connected to a corresponding terminal connecting the two capacitors on the load side.