A bi-directional DC/DC converter, comprising: a first converter circuit having a first port configured to be coupled to an energy storage device; a transformer (Trl; Tr2) having a primary winding connected to a second port of the first converter circuit and first and second secondary windings magnetically coupled to the primary winding; a rectifier circuit (2; 15) having a first port with a first terminal coupled to a first end tap of the first secondary winding and a second port configured to be coupled to a load/source; a second converter circuit having a first port with a first terminal coupled to an intermediate tap of the second secondary winding and a second port configured to be coupled to the load/source; and a switching circuit comprising a double-pole double-throw (DPDT) switch configured to: connect a first end tap of the second secondary winding to a second terminal of the first port of the rectifier circuit (2; 15) and connect a second end tap of the second secondary winding to a second end tap of the first secondary winding in a first switch position to support power transfer from the energy storage device to the load via the rectifier circuit (2; 15); and connect the second end tap of the second secondary winding to a second terminal of the first port of the second converter circuit and disconnect the first end tap of the second secondary winding from the second terminal of the first port of the rectifier circuit (2; 15) in a second switch position to support power transfer from the load/source to the energy storage device via the second converter circuit. a first converter circuit having a first port configured to be coupled to an energy storage device; a transformer (Trl; Tr2) having a primary winding connected to a second port of the first converter circuit and first and second secondary windings magnetically coupled to the primary winding; a rectifier circuit (2; 15) having a first port with a first terminal coupled to a first end tap of the first secondary winding and a second port configured to be coupled to a load/source; a second converter circuit having a first port with a first terminal coupled to an intermediate tap of the second secondary winding and a second port configured to be coupled to the load/source; and a switching circuit comprising a double-pole double-throw (DPDT) switch configured to: connect a first end tap of the second secondary winding to a second terminal of the first port of the rectifier circuit (2; 15) and connect a second end tap of the second secondary winding to a second end tap of the first secondary winding in a first switch position to support power transfer from the energy storage device to the load via the rectifier circuit (2; 15); and connect the second end tap of the second secondary winding to a second terminal of the first port of the second converter circuit and disconnect the first end tap of the second secondary winding from the second terminal of the first port of the rectifier circuit (2; 15) in a second switch position to support power transfer from the load/source to the energy storage device via the second converter circuit. connect a first end tap of the second secondary winding to a second terminal of the first port of the rectifier circuit (2; 15) and connect a second end tap of the second secondary winding to a second end tap of the first secondary winding in a first switch position to support power transfer from the energy storage device to the load via the rectifier circuit (2; 15); and connect the second end tap of the second secondary winding to a second terminal of the first port of the second converter circuit and disconnect the first end tap of the second secondary winding from the second terminal of the first port of the rectifier circuit (2; 15) in a second switch position to support power transfer from the load/source to the energy storage device via the second converter circuit.