Power converter responsive to device connection status
AssigneeSemiconductor Components Industries, LLC
InventorsBongGeun CHUNG, Gwanbon KOO, Taesung KIM
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Abstract
Various embodiments of apparatuses, systems, and methods for controlling the operating status of a power converter during, a standby mode, a powered mode, and a transition from the standby mode to the powered mode is described. For at least one embodiment, a power converter includes a primary controller and a secondary controller wherein the primary controller includes a first circuit configured to initiate a transition from standby mode to powered mode upon receipt of a wake-up signal and wherein the first circuit is powered during standby mode.
Claims20
A device, comprising:
- an output controller having a third secondary port;
- wherein the output controller is configured to monitor a voltage potential at the third secondary port;
- and
- wherein the third secondary port is electrically grounded via a first resistance;
- and
- wherein, when an adaptive device is coupled to the output controller via the third secondary port, a voltage divider circuit is formed by an adaptive device resistance and the first resistance;
- wherein the output controller is configured to detect a change in the voltage potential at the third secondary port when the voltage divider circuit is formed.
A secondary controller for a power converter, comprising:
- a first secondary port;
- a second secondary port;
- and
- a third secondary port;
- wherein the secondary controller is configured for use of the first secondary port to communicate at least one signal to a primary controller of the power converter;
- wherein the secondary controller is configured to receive electrical power via the second secondary port;
- and
- wherein the secondary controller is configured to detect a change in voltage potential arising when an adaptive device is connected to the power converter.
A method for operating a power converter, comprising:
- during a powered mode of operation,
- receiving electrical power, by a secondary controller for a power converter, from a second coil of a transformer in the power converter;
- during a standby mode of operation,
- powering down the secondary controller;
- and
- monitoring a voltage potential at a port of the secondary controller;
- and
- initiating a transition mode of operation by,
- detecting a change in the voltage potential;
- wherein the change in voltage potential occurs when an adaptive device and the secondary controller form a voltage divider circuit that changes the voltage potential.
Dependencies are inferred from the claim text.