Efuse-Based Frequency Generator Control Circuit
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Solution Overview
Problem
Conventional frequency generator apparatuses require a laser fuse for control, which occupies significant chip area and necessitates additional components, making them inefficient for controlling oscillator frequencies effectively.
Innovation Solution
A frequency generator apparatus utilizing an electric fuse (efuse) to control the activation of a frequency generator, where the efuse's resistance states are detected to output enabling signals, allowing the frequency generator to decide whether to output a frequency signal based on the efuse's state, eliminating the need for a laser beam and reducing chip area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a laser fuse is used to control the frequency generator, then the frequency can be determined, but the chip area occupied is large and additional laser supply equipment is required
Solution Approach 1:
The patent replaces the optical-based laser fuse system with an electrical-based efuse system. Instead of using a laser beam to melt the fuse link, the invention uses electrical current to blow the efuse, thereby controlling the frequency generator. This substitution eliminates the need for laser supply equipment and reduces chip area while maintaining reliable frequency control functionality
Solution Approach 2:
The invention extracts and removes the laser supply equipment from the frequency generator system by using efuse instead of laser fuse. The laser-related components (laser beam source, optical paths, etc.) are completely eliminated, keeping only the essential electrical fuse control mechanism, thus reducing overall system complexity and chip area
2Reliability
If a laser fuse is used to control the frequency generator, then the frequency can be determined, but additional laser supply equipment and complex protective measures are required
Solution Approach 1:
The patent replaces the complex optical control system with a simple electrical control system. The laser fuse requiring optical paths, beam focusing, and protective measures is substituted with an efuse that can be controlled by simple electrical current, dramatically reducing device complexity while maintaining reliable frequency determination
Solution Approach 2:
The invention uses efuse as a disposable, simple electrical component that can be blown once to set the frequency and then remains in a stable state. This replaces the complex, expensive laser fuse system with a simple electrical component that achieves the same one-time programming function with much lower 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
The efuse-based solution reduces chip area, simplifies the control circuit, and allows for efficient activation of frequency generators without additional laser supply equipment, enabling broader frequency range selection and reduced complexity.
Implementation Method 1
There are two kinds of states for the efuse, that is, program state and non-program state, which present two different resistances.
Data Source
AI summary
A frequency generator apparatus and a control circuit thereof are provided. The frequency generator apparatus comprises the control circuit and a frequency generator, wherein the control circuit contains an electric fuse (efuse). The control circuit outputs an enabling signal according to the state of the efuse. The frequency generator is coupled to the control circuit, receives the enabling signal, and decides to output a frequency signal or not according to the enabling signal.