Termination capacitor area acquisition method and system and electronic equipment

By accurately computing the termination capacitor area and model update, the parameters of the hollowed-out area are determined to increase impedance, which solves the impedance mismatch problem of pad positions on the high-speed signal differential line.

CN119692298APending Publication Date: 2025-03-25BEI DOU ZHI LIAN KE JI YOU XIAN GONG SI +1
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Patent Information

Application Number
CN202411769181.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-04
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

On the high-speed signal differential line, since the pad size is wider than the signal line width, the impedance of the termination capacitor area is smaller, and there is a problem of impedance mismatch.

Method used

By obtaining the first attribute parameters of the termination capacitor area, a region model is constructed; then determining the second attribute parameters is determined, and a circuit model is constructed; obtaining the third attribute parameters are determined, and the impedance curve is determined; determining the hollowed-out area parameters based on the impedance curve, and the region model is updated to increase impedance, compensating for the low impedance of the pad position.

Benefits of technology

Accurate calculation of the termination capacitor area is realized, the corresponding impedance curve is obtained, and the impedance is increased by hollowing out the parameters of the area, which solves the impedance mismatch problem of pad positions.

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Abstract

The invention provides a terminating capacitor area acquisition method and system and electronic equipment, and relates to the technical field of circuit design, the method comprises the following steps: firstly, acquiring a first attribute parameter corresponding to a terminating capacitor area, and constructing an area model corresponding to the terminating capacitor area based on the first attribute parameter; then determining a second attribute parameter corresponding to the region model, and constructing a circuit model corresponding to the region model by using the second attribute parameter; acquiring a third attribute parameter corresponding to the circuit model, and determining an impedance curve of the terminating capacitor region by using the third attribute parameter; and finally, determining hollowed-out area parameters corresponding to the terminating capacitor area based on the impedance curve, and updating the terminating capacitor area in the area model by using the hollowed-out area parameters. According to the method, the hollowed area parameter of the terminating capacitor area can be determined by using the impedance curve corresponding to the terminating capacitor area so as to increase the impedance of the terminating capacitor area, and the low impedance at the position of the bonding pad can be compensated, so that the problem of impedance mismatching at the position is solved.
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