Back to results
US 2020/0091740 A1Published application
Portable dual-device charger system
AssigneeNorth Inc.
InventorsPhilip Michael Isaacs, Kai Xu, David Vandervies
Life of this patent
Estimating the term…
Abstract
A portable charger system provides two charger ports with different charging characteristics. Two devices having different charging characteristics may be coupled to the two charger ports to be charged simultaneously.
Claims21
A portable charger system for charging a first device and a second device, the portable charger system comprising:
- a first charger port to provide an electrical connection with a first device;
- a second charger port to provide an electrical connection with a second device;
- a constant voltage source having an output coupled to the first charger port;
- a constant current source having an output coupled to the second charger port;
- a rechargeable battery;
- a connector having a connector input node to receive input power from an external source and a connector output node;
- and
- a battery charger having a battery charger input node coupled to the connector output node, a battery charger output node coupled to the constant voltage source and the constant current source, and a battery node coupled to the rechargeable battery, the battery charger having a power path management control circuit that forms:
- a first device charging path between the battery charger input node and the battery charger output node when a voltage on the battery charger input node is above a select voltage threshold;
- a battery charging path between the battery charger input node and the battery node when the voltage on the battery charger input node is above the select voltage threshold;
- and
- a second device charging path between the battery node and the battery charger output node when the voltage at the battery charger input node is at or below the select voltage threshold.
9 more elements
Dependencies are inferred from the claim text.