Bridge Power Circuit for Zero Consumption During Host Sleep
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Solution Overview
Problem
Current bridge designs consume excessive power, violating EU's 2013 power regulations, and cause operation failures due to incomplete initialization of peripheral apparatuses during power saving and resumption states.
Innovation Solution
A bridge circuit with a power circuit that is enabled or disabled based on an enabling signal, reducing power consumption to zero during power saving states and ensuring complete initialization before resuming operations, using a connector with a power pin and command pin to manage power supply and data transmission effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bridge operates continuously to maintain communication readiness, then the reliability of data transmission is improved, but the power consumption increases to 40 mA which violates EU 2013 power regulations
Solution Approach 1:
The bridge performs preliminary initialization of the peripheral apparatus before the host returns from power saving state. The power circuit is enabled in advance to complete the initialization process before data transmission commands are issued, ensuring the peripheral apparatus is ready to receive commands without requiring continuous operation during the entire power saving period.
2Use of energy by moving object
If the bridge enters standby state during host power saving to reduce power consumption, then the power consumption is reduced, but the peripheral apparatus initialization is delayed causing operation failures
Solution Approach 1:
The power circuit is enabled in advance when the host enters power saving state to perform the initialization of the peripheral apparatus before the host returns. This preliminary action ensures that when the host resumes and issues commands, the peripheral apparatus is already initialized and ready, preventing operation failures while still allowing the bridge to reduce power consumption during the host's power saving period.
3Productivity
If the bridge re-establishes link immediately when host returns from power saving state, then the productivity of data transmission is improved, but commands are lost due to incomplete initialization of peripheral apparatus
Solution Approach 1:
The initialization of the peripheral apparatus is performed in advance before the host returns from power saving state. By the time the host resumes and the bridge re-establishes the link for high-speed data transmission, the peripheral apparatus is already fully initialized and ready to process commands, eliminating the window where commands could be lost due to incomplete initialization.
Data Source
AI summary
A bridge is provided. The bridge is coupled between a host and a peripheral apparatus and includes a connector, a power circuit, and a bridge circuit. The connector connects the host and comprises a power pin. The power circuit converts a supplying power to a driving voltage when the power circuit is enabled. The bridge circuit is powered by the driving voltage and performs a data transmission procedure between the host and the peripheral apparatus. An enabling terminal of the power circuit is coupled to the power pin to receive an enabling signal transmitted by the host through the power pin. The power circuit is enabled to provide the driving voltage when the enabling signal is provided with a first potential. The power circuit is disabled to stop providing the driving voltage when the enabling signal is provided with a second potential.