Power Delivery Module for USB Power Management in Mobile Phones
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Solution Overview
Problem
Mobile phones with Type-C interfaces face increased power consumption due to the need for universal serial bus (USB) modules to maintain a communication state even when no service is performed with connected Type-C headsets, leading to higher energy usage.
Innovation Solution
A method and apparatus that utilize a power delivery (PD) module to convert key operation signals into PD signals when the USB module is in a power-off state, allowing the second electronic device to process key operations without maintaining continuous communication, thereby enabling power-off states for USB modules during idle periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If USB modules maintain a communication state to support Type-C headset connectivity, then device compatibility and functionality are improved, but power consumption increases
Solution Approach 1:
The USB module dynamically transitions between power-off state and communication state based on service requirements. The power delivery module detects service status and controls the USB module to power off during idle periods while maintaining the ability to quickly resume communication when needed, thus reducing power consumption without sacrificing compatibility.
Solution Approach 2:
The system implements periodic service detection and state transitions. The power delivery module periodically checks whether service is being performed with the Type-C headset, and based on this periodic detection, controls the USB module to switch between power-saving and active communication states, optimizing power usage while maintaining functionality.
2Use of energy by moving object
If USB modules power off during idle periods, then power consumption is reduced, but service response capability may be delayed
Solution Approach 1:
The power delivery module performs preliminary detection of service status and proactively controls the USB module to transition to active state before service is actually needed. This preliminary action ensures that when service requirements arise, the USB module is already prepared to communicate, minimizing response delay while maintaining power savings during truly idle periods.
Solution Approach 2:
The system implements feedback mechanisms where the power delivery module continuously monitors service status and provides feedback control to the USB module's power state. When service is detected or anticipated, the feedback loop triggers the USB module to wake up and establish communication, ensuring rapid response while optimizing power consumption during idle states.
Data Source
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AI summary
An electronic device, a method for reducing power consumption, and an apparatus, relating to the electronic field, are provided, to reduce power consumption of a mobile phone. The electronic device includes: a key module (101), a first USB module (102) connected to the key module (101), where the key module (101) outputs different signals when different keys on the key module (101) are pressed, and the first USB module (102) is configured for USB communication; and a first PD module (103), connected to the key module (101), and configured to: when the first USB module (102) is in a power-off state and a key operation is performed on the key module (101), convert a signal output by the key module (101) into a PD signal and transmit the PD signal to a second electronic device, to enable the second electronic device to process the key operation. The second electronic device is an electronic device connected to a first electronic device (10).