Peak Voltage Detector Switching to Reduce Charge Loss
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Solution Overview
Problem
Conventional integrated circuit (IC) architectures face challenges in detecting peak voltages while minimizing charge loss, which often results in voltage droop due to the use of energy storage devices like capacitors that increase cost and surface area.
Innovation Solution
A circuit structure is designed with a peak voltage detector and electrically actuated switches that couple the input line to both the peak voltage detector and a capacitor, allowing for efficient detection and storage of peak voltages while minimizing charge loss by preventing current flow when not needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional circuits use energy storage devices like capacitors to store voltages temporarily, then voltage degradation is avoided, but cost and surface area increase significantly
Solution Approach 1:
The patent extracts the charge loss mitigation function from the main signal path by introducing a separate feedback path with a second switch. This allows the capacitor to be isolated from continuous charging/discharging cycles that cause degradation, while still maintaining voltage storage capability. The feedback path takes out the harmful charging action from the main signal flow.
Solution Approach 2:
The patent employs dynamic switching control where the first switch responds to the input signal and the second switch responds to the output signal. This dynamic behavior allows the circuit to adaptively charge the capacitor only when necessary (when input exceeds stored voltage) and prevent further charging when the capacitor is already charged, thereby reducing unnecessary charge loss and improving efficiency.
2Reliability
If conventional circuits use additional control mechanisms and logic to mitigate electrical degradation, then voltage stability is improved, but device complexity increases
Solution Approach 1:
The patent merges the voltage detection function and the charge control function into a single integrated circuit structure. The peak voltage detector simultaneously determines when to close the first switch and when to open the second switch, eliminating the need for separate control logic. The feedback mechanism is combined with the charging mechanism in a unified architecture that reduces overall circuit complexity.
Solution Approach 2:
The circuit employs self-regulating behavior where the output voltage itself controls the charging process through the second switch. When the capacitor voltage reaches the peak input voltage, the second switch automatically opens, preventing further charging and eliminating charge loss. This self-service mechanism eliminates the need for external control logic to monitor and manage the charging state.
3Loss of energy
If electrically actuated switches are used to control current flow to the capacitor, then charge loss is reduced, but device complexity increases
Solution Approach 1:
The peak voltage detector serves multiple functions: it detects the input signal peak, controls the first switch to charge the capacitor, and simultaneously controls the second switch to prevent charge loss. This multi-functionality allows the use of electrically actuated switches without significantly increasing overall circuit complexity, as the control logic is integrated into the existing peak detection function.
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
The proposed circuit structure effectively reduces charge loss and voltage droop, thereby improving the accuracy of peak voltage detection and reducing the need for additional components and surface area.
Implementation Method 1
a first electrically actuated switch couples the capacitor to the second input node of the peak voltage detector; wherein the input line is coupled to a control node of the first electrically actuated switch
Data Source
AI summary
Embodiments of the disclosure provide a peak voltage detection circuit with reduced charge loss. A circuit structure of the disclosure includes a peak voltage detector having a first input node coupled to an input line and a second input node coupled to a first electrically actuated switch. The peak voltage detector coupling the first input node and the second input node to an output node, and a second electrically actuated switch coupling the output node of the peak voltage detector to a capacitor. The first electrically actuated switch couples the capacitor to the second input node of the peak voltage detector. The input line is coupled to a control node of the first electrically actuated switch and a control node of the second electrically actuated switch.