Power Converter Sleep Mode Control for Charging Port Load Detection
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Solution Overview
Problem
Power converters used to charge electronic devices often consume power even when not actively supplying power, leading to inefficiencies and increased energy costs due to residual losses and the need for manual disconnection, which is burdensome for users.
Innovation Solution
Incorporating control circuitry and automatic load detection in power converters to transition between active and sleep modes based on the presence of a load, allowing the power converter to shut down when not in use and awaken when needed, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power converter remains in active state to ensure immediate power supply, then power availability is improved, but power consumption increases due to residual losses
Solution Approach 1:
The power converter dynamically transitions between active and sleep modes based on real-time load detection. When no load is detected, the system automatically enters sleep mode to minimize power consumption; when load is detected, it wakes up to provide power supply. This dynamic state adjustment resolves the contradiction by adapting the system's operational state to actual needs.
Solution Approach 2:
The power converter employs automatic load detection circuitry that autonomously monitors its output and determines when to enter or exit sleep mode without user intervention. The system self-manages the transition between states, eliminating the need for manual disconnection while optimizing power consumption based on actual power delivery requirements.
2Loss of energy
If the power converter enters sleep mode to reduce power consumption, then energy efficiency is improved, but response time to supply power deteriorates
Solution Approach 1:
The power converter maintains readiness by periodically monitoring for load conditions even in sleep mode. The automatic load detection circuitry is designed to quickly detect the presence of a load and trigger wake-up sequences, ensuring that the transition from sleep to active state occurs rapidly when power is needed, thus minimizing response time while maintaining energy savings.
3Loss of energy
If manual disconnection is used to eliminate power losses, then energy efficiency is improved, but ease of operation deteriorates
Solution Approach 1:
The power converter incorporates automatic load detection capability that allows it to autonomously determine when it is not supplying power to a device and enter sleep mode accordingly. This self-managing feature eliminates the need for users to manually disconnect the power converter, providing both energy efficiency and user convenience simultaneously.
Data Source
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AI summary
Electronic devices may have batteries that power internal circuitry. A power converter may connect to an input-output port in an electronic device to deliver power to the electronic device. Battery charging circuitry in the electronic device may be used to charge the battery in an electronic device while power is delivered from the power converter. The power converter may have load detection circuitry. When an output load is present, the power converter operates in an active mode and delivers power to the electronic device. When the output load is not present, the power converter enters a low-power standby mode. The electronic device has switching circuitry that periodically either electrically couples or electrically isolates the input-output port from internal circuitry. When the input-output port is isolated, the power converter senses that no output load is present and enters the standby state to conserve power.