Patent ID: 9746868
Date: 2017-08-29
CPC Classifications: G05F,H02J,H02M

Claim:
1. A DC-DC converter comprising: (a) an inductor having a first terminal and a second, opposite terminal; (b) a first voltage rail for carrying a first voltage and a second voltage rail for carrying a second voltage different from the first voltage; (c) an ambient energy source having a first lead; (d) a power storage device having a first lead; (e) a first rail switch having a first terminal connected to the first terminal of the inductor, a second terminal connected to the first voltage rail, and a control input; (f) a second rail switch having a first terminal connected to the first terminal of the inductor, a second terminal connected to the second voltage rail, and a control input; (g) an ambient switch having a first terminal connected to the first terminal of the inductor, a second terminal connected to the first lead of the ambient energy source, and a control input; and (h) a storage switch having a first terminal connected to the second terminal of the inductor, a second terminal connected to the first lead of the power storage device, and a control input.