Patent ID: 8853888

Claim:
A DC-DC converter comprising: a converter input comprising a first input voltage electrically connected to a first bidirectional switch and a second input voltage electrically connected to a second bidirectional switch, wherein the first bidirectional switch and the second bidirectional switch each comprise a pair of controllable switches in a parallel connection; an output of the converter input electrically connected with both an inductor and a third bidirectional switch, the third bidirectional switch connected to a ground and the inductor connected to a fourth bidirectional switch and a fifth bidirectional switch, the fourth bidirectional switch connected to the ground and the fifth bidirectional switch connected to a voltage output in connection with a capacitor, wherein the third bidirectional switch comprises a transistor and a diode in parallel, the fourth bidirectional switch comprises a transistor and a diode in parallel and the fifth bidirectional switch comprises a transistor and a diode in parallel; wherein the first bidirectional switch and the second bidirectional switch can be on to transfer energy simultaneously to the voltage output; and wherein the voltage output is bucked, boosted or buck-boosted relative to one of the first input voltage or the second input voltage and the voltage output is a same polarity relative to the first input voltage and the second input voltage without use of a transformer; and wherein the converter operates bidirectionally to provide the output voltage to one of the voltage inputs and the one of the voltage inputs is bucked, boosted or buck-boosted relative to the output voltage and the output voltage is bucked, boosted or buck-boosted by turning on, turning off or switching each of the plurality of bidirectional switches.