Poly Fuse Burning System with Dynamic Voltage Control
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Solution Overview
Problem
Conventional poly fuse burning systems face challenges in precisely controlling the burning process due to difficulties in adjusting pulse width and voltage levels, leading to inconsistent burning results and inability to instantaneously control the burning state, especially for various types of poly fuses, resulting in unreliable burning outcomes.
Innovation Solution
A poly fuse burning system comprising a controllable power source and a monitor circuit that adjusts voltage levels and shuts down power when a targeted burning state is reached, utilizing a current mirror circuit and programmable current detection circuit to monitor and control the current flowing through the poly fuse, allowing for real-time monitoring and precise burning control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed high voltage is applied to burn the poly fuse, then the burning process is simple to implement, but the burning state cannot be precisely controlled and metal materials may melt and flow causing resistance to fall suddenly
Solution Approach 1:
The patent applies dynamics by making the voltage level adjustable during the burning process. The voltage source transitions from a fixed high voltage to a dynamically adjustable voltage that can be gradually reduced. This allows the system to start with high voltage for efficient burning and then reduce voltage to precise levels for controlled termination, resolving the contradiction between simplicity and precision in the burning process.
Solution Approach 2:
The patent changes the voltage parameter from a fixed value to a variable that can be adjusted in real-time. By implementing a voltage source that can provide different voltage levels and gradually reduce the voltage, the system achieves precise control over the burning state while maintaining ease of operation. This parameter change enables the poly fuse to reach the desired resistance state without metal melting or resistance collapse.
2Reliability
If the pulse width is made wider to ensure complete burning, then the burning is more reliable, but metal materials melt and flow to the hole causing resistance to fall suddenly
Solution Approach 1:
The patent uses dynamics by implementing a time-varying voltage waveform instead of a constant high voltage pulse. The voltage source initially provides high voltage to ensure reliable burning, then automatically reduces the voltage level as the burning progresses. This dynamic voltage reduction prevents metal melting and flowing that would occur with sustained high voltage, while still ensuring complete burning through the initial high-voltage phase.
Solution Approach 2:
The patent applies beforehand cushioning by preparing a voltage reduction mechanism that activates before metal melting can occur. The system monitors the burning process and reduces voltage in advance to prevent the harmful effects of metal melting and flowing. This proactive voltage reduction cushions against the potential damage while maintaining burning reliability through the initial high-voltage phase.
3Object-generated harmful factors
If the pulse width is made narrower to prevent metal melting, then metal materials do not melt and flow, but multiple inspections and repeated pulsing are necessary to burn out the poly fuse
Solution Approach 1:
The patent applies dynamics by implementing a time-varying voltage waveform that transitions from high voltage to lower voltages. This dynamic approach allows the system to use high voltage initially for efficient burning without causing metal melting, then reduces voltage to prevent harmful effects. This eliminates the need for multiple repeated pulsing cycles and inspections, significantly improving burning efficiency while preventing metal damage.
Solution Approach 2:
The patent uses periodic action through a structured voltage waveform that progresses through different voltage levels in sequence. Instead of using narrow pulses repeatedly, the system applies a single continuous voltage waveform that periodically transitions through high, medium, and low voltage phases. This periodic voltage progression achieves complete burning in one operation without requiring multiple inspections or repeated pulsing.
4Manufacturing precision
If different pulse widths are used for different kinds of poly fuses to achieve optimal burning, then burning precision is improved, but testing time and complexity increase significantly
Solution Approach 1:
The patent applies universality by designing a single voltage source that can handle all types of poly fuses through programmable voltage control. Instead of requiring separate testing and optimization for each poly fuse type, the universal voltage source can be programmed with appropriate voltage waveforms for different fuse types. This eliminates the need for extensive testing of different pulse widths for each fuse variety, achieving burning precision across all types without the time cost of individual optimization.
Solution Approach 2:
The patent changes the voltage parameter from fixed to programmably variable, allowing the same hardware to adapt to different poly fuse types by changing voltage parameters through software control. This parameter flexibility enables precise burning for various fuse types without requiring physical testing and adjustment, significantly reducing the time and complexity associated with optimizing burning parameters for different fuse varieties.
5Ease of manufacture
If voltage level is continuously raised to burn the poly fuse, then the burning process is simple, but the current value rises several times causing metal materials to melt and flow
Solution Approach 1:
The patent applies dynamics by reversing the conventional voltage approach. Instead of continuously raising voltage, the system starts with high voltage to initiate burning, then dynamically reduces voltage to lower levels. This inverse dynamic control prevents metal melting and flowing that occur with continuous voltage increase, while maintaining simplicity through automated voltage waveform generation. The voltage profile transitions from high to low in a controlled manner, eliminating harmful effects.
Solution Approach 2:
The patent applies inversion by reversing the conventional voltage control strategy. Rather than increasing voltage continuously to achieve burning, the system applies high voltage initially and then decreases voltage over time. This inverted approach achieves the same burning effect without causing metal melting and flowing, as the voltage reduction prevents the conditions that lead to harmful thermal effects while maintaining process simplicity.
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
Enables reliable and precise control of the poly fuse burning process, ensuring the poly fuse reaches the desired burning state with appropriate power and duration, improving the reliability of the system and allowing for multiple burning states corresponding to different resistances.
Implementation Method 1
when the voltage applied by the voltage source surpasses 3V, the poly fuse burns out, and the current flowing through the poly fuse falls suddenly because the resistance across the poly fuse rises substantially
Implementation Method 2
a monitor circuit monitoring the burning state of the poly fuse, wherein when a targeted burning state is reached, a control signal is output to shut down the controllable power source to stop the burning
Data Source
AI summary
This invention provides a poly fuse burning system comprising a poly fuse, a controllable power source supplying power for burning the poly fuse, and a monitor circuit monitoring the burning state of the poly fuse, wherein when a targeted burning state is reached, a control signal is output to shut down the controllable power source to stop the burning.