High-Voltage Generator Multi-Stage Selection Low-Voltage Transistor
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Solution Overview
Problem
Current high-voltage generator circuit chips fail to balance performance, durability, and volume effectively, with conventional methods either being inefficient or increasing the chip's volume, and existing multi-stage boost circuits can cause excessive voltage differences that damage components.
Innovation Solution
A high-voltage generator with a multi-stage selection process using low-voltage transistors, comprising a boost circuit with multiple charge pumps and switches, where the switches are connected in parallel to each charge pump, and a feedback circuit that adjusts the clock signal frequency to stabilize output voltage, ensuring only one boost voltage difference across the switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional high-voltage generator circuits are used, then voltage boosting capability is achieved, but chip volume and area increase
Solution Approach 1:
The patent merges multiple charge pump stages into a single integrated circuit structure, combining the functionality of multiple voltage boosting stages while sharing common components such as capacitors and control logic, thereby achieving high voltage output without proportionally increasing chip area
Solution Approach 2:
The charge pump circuit is designed to perform multiple functions: voltage boosting, voltage multiplication, and impedance matching, all within a single circuit block that can be configured through control signals to achieve different voltage outputs, reducing the need for separate circuits for each function
2Adaptability or versatility
If multi-stage boost circuits are used, then voltage range is expanded, but voltage difference across components becomes excessive causing damage
Solution Approach 1:
The patent implements dynamic control of the charge pump stages through clock signal management, where stages are activated or deactivated based on the required output voltage level, ensuring that no single stage experiences excessive voltage stress while maintaining the ability to generate high voltages when needed
Solution Approach 2:
The circuit incorporates feedback mechanisms that monitor the output voltage and adjust the operation of individual charge pump stages accordingly, preventing any single stage from experiencing dangerous voltage differences by dynamically balancing the voltage distribution across stages
3Adaptability or versatility
If high-voltage generation is integrated into biomedical chip, then chip functionality is enhanced, but manufacturing complexity increases
Solution Approach 1:
The patent utilizes standard low-voltage transistor process parameters and modifies the circuit operation through control signal parameters rather than requiring specialized high-voltage fabrication processes, allowing the high-voltage generator to be manufactured using conventional CMOS processes with minimal additional complexity
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
This design integrates high-voltage generation into a compact biomedical chip, ensuring efficiency, durability, and controlling production costs by preventing switch damage and allowing flexible voltage adjustment within a safe range.
Implementation Method 1
The boost circuit comprises at least a first stage charge pump and a second stage charge pump in series
Data Source
AI summary
The present disclosure relates to a high-voltage generator with multi-stage selection in low-voltage transistor process which include a boosted circuit, a plurality of switch and a feedback circuit. The boosted circuit includes multiple charge pump, so that can generate a DC output voltage higher or lower than the input signal. Turning on or turning off each switch controlled by a control signal respectively. Both ends of the circuit is connected to the output end of the high-voltage generator and charge pumps. By controlling the turning on or turning off each switch, it determines the magnitude of the boost and it also can ensure that switches will not be damaged due to excessive voltage difference.