Semiconductor Driving Device Signal Level Encoding
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Solution Overview
Problem
Conventional driving devices for semiconductor devices require large-scale circuits to detect and discriminate abnormal conditions, leading to increased costs and complexity, especially in distinguishing between alarm signals and their release signals, which complicates the detection of abnormality resolution.
Innovation Solution
A driving device with multiple protection factor detection units, an identification signal generation unit, a continuation signal generation unit, a signal selection unit, and an alarm signal output unit, allowing for selectable output of signals that identify abnormal causes and their continuation, enabling efficient monitoring of semiconductor device operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large-scale circuit is used to measure pulse width and discriminate abnormality kinds, then measurement precision and discrimination capability are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent changes the parameter of signal representation from pulse width encoding to signal level encoding. Instead of measuring pulse widths to identify abnormality kinds, the system uses different signal levels (HIGH/LOW) on the alarm terminal to represent different abnormality types. This eliminates the need for complex pulse width measurement circuits while maintaining discrimination capability.
Solution Approach 2:
The patent extracts the essential information (abnormality kind identification) from the complex pulse width measurement process and represents it through simple signal levels. By taking out only the necessary discrimination information and encoding it in signal levels rather than temporal characteristics, the circuit complexity is significantly reduced.
2Reliability
If a large-scale circuit is used to detect continuous pulse signal output, then abnormality detection capability is improved, but device complexity increases
Solution Approach 1:
The patent changes the detection parameter from temporal continuity (whether pulses are continuously output) to instantaneous signal level (HIGH or LOW state). This simple binary state detection replaces complex continuous monitoring circuits, significantly reducing device complexity while maintaining reliable abnormality detection capability.
3Adaptability or versatility
If individual semiconductor integrated circuits are developed for different abnormality discrimination cases, then adaptability to specific applications is improved, but manufacturing cost and development complexity increase
Solution Approach 1:
The patent creates a universal driving device that can handle multiple abnormality discrimination cases through a single standardized interface. By using signal level encoding (HIGH/LOW states) to represent different abnormality kinds, the system provides adaptability to various applications without requiring individual IC development for each case, thereby reducing manufacturing costs and development complexity.
Data Source
AI summary
A driving device of a semiconductor device includes a plurality of protection factor detection units, an identification signal generation unit, a continuation signal generation unit, a signal selection unit, and an alarm signal output unit. The protection factor detection units detect an occurrence of a protection factor. The protection factor requires a protection operation of a semiconductor device. The protection factor detection units output a protection factor generation signal. When any protection factor detection units output the protection factor generation signal, the identification signal generation unit generates a protection factor identification signal. The continuation signal generation unit generates a protection factor continuation signal while the protection factor detection unit outputs the protection factor generation signal. The signal selection unit selects the protection factor identification signal and the protection factor continuation signal. The alarm signal output unit outputs a selection signal selected by the signal selection unit as an alarm signal.