Touch Control Power Management Modulating Charging Speed
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Solution Overview
Problem
Conventional touchable control systems take a long time to restore from sleep mode to operating mode due to slow charging rates, leading to user experience delays and potential transistor damage from inefficient power management.
Innovation Solution
A power management device with a boost circuit, detection circuit, and modulation circuit that modulates the output voltage using a faster boosting charging signal before reaching the predetermined operating voltage and switches to ballasting charging after reaching it, reducing response time and preventing transistor damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the conventional ballasting charging controlling signal is used to charge the external capacitor, then the system operates stably, but the charging rate is slow and the response time is long
Solution Approach 1:
The patent applies dynamics by making the charging rate adjustable based on system state. The modulation circuit dynamically switches between ballasting charging (stable, slower) and boosting charging (unstable, faster) modes depending on whether the output voltage has reached the predetermined value, optimizing both speed and stability at different charging stages
Solution Approach 2:
The patent uses periodic action through the detection circuit that continuously monitors the output voltage and periodically switches the charging mode. The system alternates between detection phases and charging phases, using the detected voltage level to determine whether to apply ballasting or boosting charging, creating a rhythmic control pattern that balances speed and stability
2Loss of time
If the boost charging rate is increased to reduce response time, then the charging speed improves, but the transistor may be damaged and power is wasted
Solution Approach 1:
The patent applies preliminary action by using the detection circuit to monitor the output voltage before switching to boosting charging. The system prepares by detecting when the ballasting charging has reached the predetermined voltage threshold, then proactively switches to the faster boosting mode, preventing delays while avoiding premature high-power charging that could damage components
Solution Approach 2:
The patent implements feedback through the detection circuit that continuously monitors the output voltage and feeds this information back to the modulation circuit. This feedback mechanism allows the system to adjust the charging rate appropriately - using ballasting charging when voltage is low and switching to boosting charging when the predetermined value is reached, thereby optimizing response time while preventing transistor damage and power waste
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Significantly reduces the time to restore from sleep mode to operating mode, enhancing user convenience and preventing power wastage and transistor damage by optimizing the charging process.
Implementation Method 1
the boost circuit boosts an output voltage according to an input voltage, a controlling signal for ballasting charging, and a controlling signal for boosting charging
Implementation Method 2
The output voltage Vout usually utilities an external capacitor Cext to charge as the operating voltage of the loading circuit
Data Source
AI summary
A power management device of a touchable control system includes a boost circuit boosting an output voltage according to an input voltage, a controlling signal for ballasting charging, and a controlling signal for boosting charging, a detection circuit detecting a predetermined value of the output voltage, a modulation circuit, and a loading circuit. The modulation circuit separately modulates the output voltage by the controlling signal for ballasting charging after the output voltage reaches the predetermined value and by the controlling signal for boosting charging before the output voltage reaches the predetermined value according to the detecting of the detection circuit. The loading circuit receives the reached predetermined value of the output voltage according to the modulation of the modulation circuit, wherein the controlling signal for boosting charging modulating the output voltage is more rapid than the controlling signal for ballasting charging modulating the output voltage.