US 12,388,289 B2
Accessory device for managing multiple power sources
Siamak Mehrnami, Watertown, MA (US)
Assigned to Bose Corporation, Framingham, MA (US)
Filed by BOSE CORPORATION, Framingham, MA (US)
Filed on Aug. 23, 2023, as Appl. No. 18/454,138.
Prior Publication US 2025/0070591 A1, Feb. 27, 2025
Int. Cl. H02J 9/06 (2006.01); H02J 7/00 (2006.01)
CPC H02J 9/06 (2013.01) [H02J 7/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device, comprising:
a first power supply node configured to receive power from an alternative power source;
a second power supply node configured to be coupled to a universal serial bus (USB)-C plug of a primary power source;
an output power supply node configured to be coupled to a USB-C receptacle, wherein the output power supply node is configured to be coupled to the first power supply node and the second power supply node; and
a management circuit, comprising:
an input node coupled to a first control configuration (CC) input line and a second CC input line, wherein the first CC input line and the second CC input line are coupled between the second power supply node and the management circuit;
a first output node coupled to a first CC output line; and
a second output node coupled to a second CC output line, wherein the first CC output line and the second CC output line are both coupled between the management circuit and the output power supply node, wherein the first CC input line and the second CC input line are coupled to the second CC output line, and wherein the management circuit is configured to maintain an impedance of the first CC input line, the second CC input line, the first CC output line, and the second CC output line within a range.