Dynamic Charge Pump Voltage Regulation for Load Stability
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Solution Overview
Problem
Conventional charge pumps struggle to maintain stability in load circuits when high current demands lead to voltage drops, resulting in inefficiencies and increased total harmonic distortion due to insufficient output voltage.
Innovation Solution
A charge pump with a reference voltage switching unit and a detection circuit that adjusts output voltage by switching between multiple reference voltage sources and operating modes to maintain voltage or current within predetermined ranges, ensuring efficient operation and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the charge pump operates with a fixed output voltage, then the circuit structure is simple, but the load circuit cannot maintain stability when high current demands cause voltage drops
Solution Approach 1:
The charge pump implements dynamic output voltage adjustment by switching between multiple reference voltage sources (Vref1, Vref2, etc.) based on real-time load conditions. The controller monitors voltage drops and dynamically selects appropriate reference voltages to maintain load stability, transforming the fixed voltage system into an adaptive dynamic system that responds to changing current demands.
Solution Approach 2:
The invention changes the output voltage parameter dynamically by selecting from multiple reference voltage sources with different voltage levels. When voltage drops are detected, the controller switches to reference voltages that produce higher output voltages, thereby adjusting the electrical parameter to maintain load circuit stability under varying current demands.
2Reliability
If the charge pump increases output voltage to maintain load stability, then the load circuit performance improves, but the power consumption increases
Solution Approach 1:
The controller dynamically adjusts the output voltage parameter by selecting from multiple reference voltage sources based on actual load conditions. When voltage drops are detected, it switches to reference voltages that provide higher output; when conditions are normal, it uses reference voltages that consume less power, thereby optimizing the energy parameter while maintaining reliability.
Solution Approach 2:
The system implements feedback control by monitoring the output voltage and current of the charge pump, comparing it with reference values, and adjusting the selected reference voltage source accordingly. This closed-loop feedback mechanism ensures that power consumption is optimized by selecting the minimum necessary output voltage to maintain load stability.
3Adaptability or versatility
If the charge pump uses multiple reference voltage sources, then the output voltage can be adjusted dynamically, but the device complexity increases
Solution Approach 1:
The reference voltage system is segmented into multiple discrete reference voltage sources (Vref1, Vref2, etc.), each providing a specific voltage level. This segmentation allows the controller to select appropriate reference voltages based on load conditions, providing adaptability while keeping each individual reference source relatively simple in structure.
Solution Approach 2:
Multiple reference voltage sources serve the universal function of providing voltage references for different operating conditions. Rather than designing a completely different circuit for each voltage level, the same charge pump circuit structure is used with different reference voltages, making the system multi-functional while maintaining structural consistency.
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 solution dynamically adjusts output voltage to maintain stability in load circuits, reducing voltage drops and total harmonic distortion, and optimizing power consumption by selecting the minimum necessary output voltage based on load demands.
Implementation Method 1
A charge pump is a commonly used circuit structure capable of multiplying an input voltage to a high voltage through combinations of transistors and capacitors. The new voltage may be positive or negative. In FIG. 1A, first to a fourth switches S1-S4, a first capacitor C1, and a second capacitor C2 are arranged.
Data Source
AI summary
Disclosed is a charge-pump and a dynamic charge-pump device including the same. By switching the plurality of voltage sources, the output voltage of the charge-pump can be compensated, and changed output voltage of the charge pump is utilized to adjust a voltage as power source or ground source of a loading circuit. A detection circuit may further be included in the charge-pump for detecting the voltage or current of the loading circuit, and the minimum output voltage of the charge pump may be chosen to adjust the voltage-drop of the loading circuit, and the variation of the voltage of the loading circuit can be brought back within a predetermined range, such that the operational efficiency of the loading circuit may not be influenced. Moreover, the adjustment may be performed according to the different operation modes of the loading circuit, and the power consumption can be decreased.