Patent ID: 8450985

Claim:
A power converter comprising: a first MOSFET and a second MOSFET each electrically coupled to the voltage source, wherein the first and second MOSFETs each have a respective gate terminal, drain terminal, and source terminal, wherein the first and second MOSFETs are controlled to selectively supply a voltage source to an output load electrically coupled to an electrical node between the first MOSFET and the second MOSFET, wherein the source terminal of the first MOSFET and the drain terminal of the second MOSFET are each electrically coupled to the output load; an energy recovery circuit electrically coupled to the voltage source and to the first and second MOSFETs, wherein the energy recovery circuit comprises an inductive element electrically coupled to one of the drain terminal of first MOSFET and the source terminal of the second MOSFET; and a third MOSFET and a fourth MOSFET, wherein the third and fourth MOSFETs each have a respective gate terminal, drain terminal, and source terminal, wherein the drain of the third MOSFET is electrically coupled to the voltage source and the source of the third MOSFET is electrically coupled to the drain of the fourth MOSFET, wherein the first, second, third, and fourth MOSFETs are controlled to selectively apply an alternating current from the voltage source to the output load electrically coupled to the electrical node and a second electrical node between the third and the fourth MOSFETs, wherein the source terminal of the third MOSFET and the drain terminal of the fourth MOSFET are each electrically coupled to the output load, and wherein the first inductive element has a first inductor terminal configured to be electrically coupled to the voltage source and a second inductor terminal electrically coupled to the drain of the first MOSFET, wherein the energy recovery circuit further comprises a second inductive element having a first inductor terminal electrically configured to be electrically coupled to the voltage source and a second inductor terminal electrically coupled to the drain of the third MOSFET.