USB Type-C Port Manager Power Control Logic
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Solution Overview
Problem
Current USB Type-C and Type-A implementations in computer systems are not power optimized, leading to significant power consumption by discrete components like active multiplexors and repeaters, especially during low power states, which affects battery life in mobile devices.
Innovation Solution
Implementing intelligent power management methods that dynamically control the power usage of discrete components by determining the type of USB device connected and switching to lower power states or protocols (e.g., USB2) when not needed, using a USB Type-C Port Manager and Power Control Logic to power off unnecessary components during low power states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If discrete components (active multiplexors, repeaters) are kept active to maintain USB Type-C functionality, then data transfer capability is preserved, but power consumption increases significantly during low power states
Solution Approach 1:
The system dynamically adjusts the operational state of discrete components based on detected USB device types. When a USB 2.0 device is detected, the system transitions active multiplexors and repeaters to a powered-off state. When a USB 3.0 device is detected, these components are activated. This dynamic state adjustment resolves the contradiction by making component operation conditional rather than static.
Solution Approach 2:
The system changes the power state parameter of discrete components based on USB device detection results. By monitoring whether a connected device supports USB 3.0 protocol, the system switches components between powered-on and powered-off states, thereby optimizing power consumption while maintaining necessary functionality.
2Use of energy by moving object
If USB Type-C Port Manager and Power Control Logic are implemented to dynamically manage power, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The USB Type-C Port Manager and Power Control Logic are designed to handle multiple functions: detecting USB device types, determining protocol compatibility, controlling power states of discrete components, and managing low power mode transitions. By consolidating these related functions into dedicated control modules, the system achieves power optimization without proportionally increasing complexity.
Solution Approach 2:
The power management system operates autonomously by automatically detecting connected USB devices and making real-time decisions about component power states without requiring manual user intervention. The system self-adjusts based on detected device capabilities, reducing the need for complex user interface or configuration management.
3Duration of action of moving object
If discrete components are powered off during low power states, then battery life is extended, but wake event responsiveness may be affected
Solution Approach 1:
The system performs preliminary detection of USB device types before entering low power mode. By anticipating which components need to remain active based on pre-detected device capabilities, the system can safely power off discrete components without affecting wake event responsiveness, as the necessary functionality is already known to be handled by other pathways.
Solution Approach 2:
The power management system continuously monitors system state and USB device activity, providing feedback to adjust power states of discrete components. This feedback mechanism ensures that components are only powered off when truly unnecessary, maintaining both battery life extension and proper wake event responsiveness.
Data Source
AI summary
Apparatus and methods for managing power consumption of a data-path in a computer system are provided, the data-path comprising a first port and a second port, the first port comprising a high-speed and the second port comprising a low-speed port. The disclosed method including connecting a device to the data-path, determining that the connected device is to communicate using the second port and turning off an active circuit associated with the first port of the data-path.