Semiconductor Device Control Terminal Arrangement for Noise Mitigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing semiconductor devices are prone to malfunctions due to external noise, particularly affecting input terminals with high impedance, as they do not adequately consider the arrangement of control terminals within the same phase.
Innovation Solution
A semiconductor device design that includes multiple phases of semiconductor elements and control ICs, with a plurality of control terminals for each phase, featuring input signal terminals, control power supply positive terminals, and multiple control power supply GND terminals connected to the reference potential, arranged to mitigate the influence of external noise by increasing spatial distance and integrating noise mitigation within the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple control terminals are arranged in each phase without considering spatial arrangement, then the device can function with multiple control ICs, but external noise causes malfunctions due to high impedance input terminals operating at unintended timing
Solution Approach 1:
The control terminals for each phase are segmented into distinct functional groups: input signal terminals, control power supply positive terminals, and control power supply GND terminals. This segmentation allows for optimized spatial arrangement where GND terminals are positioned to provide noise shielding around high-impedance input terminals, thereby maintaining versatility while improving noise immunity
Solution Approach 2:
Control power supply GND terminals serve as intermediary elements that act as noise shields between external noise sources and high-impedance input terminals. By positioning these GND terminals adjacent to input terminals, they mediate the electromagnetic environment and prevent noise coupling, thus improving reliability without compromising the multi-control-IC functionality
Data Source
AI summary
An object is to provide a technique capable of mitigating the influence of external noise input to a semiconductor device. A semiconductor device includes semiconductor elements of multiple phases, control ICs of multiple phases that control driving of the semiconductor elements of multiple phases, respectively, and a plurality of control terminals provided for each phase and connected to the control ICs. In each phase, the plurality of control terminals includes input signal terminals, control power supply positive terminals connected to a positive side of control power supplies that supply power to the control ICs, and a plurality of control power supply GND terminals connected to reference potential of the control power supplies.