Integrated Circuit With Concentric Hall Element And Series Coils
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Solution Overview
Problem
Existing technologies face challenges in electrically isolating individual electronic circuits at different DC voltage potentials while maintaining high-speed data transmission, particularly in motor vehicle electronics, where data rates range from 100 kilobits/second to 50-100 megabits/second with significant voltage differences.
Innovation Solution
The integrated circuit employs a substrate with concentrically arranged and vertically spaced Hall elements and coils, connected in series to enhance magnetic field superimposition, along with compensation coils to minimize charge separation delays and improve immunity to external magnetic interference, allowing for increased data rates and breakdown strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If galvanic isolation is implemented between circuits at different DC voltage potentials, then electrical safety and circuit independence are improved, but data transmission speed and signal quality deteriorate due to limited coupling mechanisms
Solution Approach 1:
The patent replaces electrical coupling mechanisms with magnetic field coupling. Current flowing through the first coil generates a magnetic field that penetrates the galvanic barrier and induces voltage in the second coil, enabling high-speed data transmission without direct electrical contact. This substitution of magnetic coupling for electrical coupling resolves the contradiction by maintaining galvanic isolation while achieving high transmission speeds.
Solution Approach 2:
The patent optimizes magnetic coupling parameters including coil geometry, turn density, and magnetic core properties to maximize coupling efficiency. By adjusting these parameters, the system achieves strong magnetic coupling across the galvanic barrier, enabling high-speed data transmission while maintaining electrical isolation. The magnetic field strength and coupling coefficient are carefully controlled to overcome the limitations of galvanic isolation.
2Reliability
If magnetic field strength is increased to improve signal quality, then data transmission reliability improves, but energy consumption and potential interference increase
Solution Approach 1:
The patent introduces a magnetic core as an intermediary material between the coils to concentrate and guide the magnetic field. This magnetic core increases the coupling efficiency and magnetic field strength without requiring proportionally higher input energy. The core acts as a mediator that amplifies the magnetic coupling effect, improving signal quality while minimizing energy consumption compared to air-core designs.
Solution Approach 2:
The patent optimizes the magnetic coupling coefficient and field distribution by adjusting coil parameters such as turn density, winding geometry, and core material properties. These parameter changes enable achieving high signal quality with moderate energy input by maximizing the efficiency of magnetic field generation and coupling, rather than simply increasing current amplitude.
3Reliability
If coil and Hall element are placed close together to enhance coupling, then magnetic field strength increases, but electrical breakdown risk and safety margins decrease
Solution Approach 1:
The patent introduces a non-conductive insulation layer as an intermediary barrier between the coil and the Hall element. This insulation layer physically separates the high-voltage coil from the sensitive Hall element, preventing electrical breakdown while allowing magnetic field penetration. The magnetic core also serves as a mediator that concentrates the magnetic field in a controlled manner without requiring direct contact between components.
Solution Approach 2:
The patent replaces direct mechanical/electrical contact between coil and sensor with magnetic field coupling through a non-conductive path. The magnetic field penetrates the insulation layer without requiring the coil to be in direct contact with the Hall element, thereby eliminating electrical breakdown risk while maintaining strong coupling efficiency through optimized magnetic circuit design.
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
This configuration significantly enhances the quality and reliability of information transmission, increases maximum achievable data rates, and enables cost-effective, space-saving production by integrating with semiconductor technology, while providing immunity to external magnetic fields and high voltage differences.
Implementation Method 1
A magnetic field, which is generated by a data stream flowing through a coil and which represents the data information, is measured using a Hall element electrically insulated from the field-generating coil
Implementation Method 2
the first coil and the second coil being electrically connected in such a way in Are connected in series, so that current flows in the same direction in the coils, resulting in a constructive superimposition of their magnetic fields
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to an integrated circuit for transferring information, having a substrate (1), at least one Hall element (2) integrated in the substrate (1) or arranged on the substrate (1), a first coil (4) which is arranged substantially concentrically with respect to the Hall element (2), is isolated electrically from the latter and is arranged at a distance from the Hall element (2) in the vertical direction, and at least one second coil (6) which is arranged substantially concentrically with respect to the Hall element (2), is isolated electrically from the latter and is arranged at a distance from the Hall element (2) and the first coil (4) in the vertical direction, wherein the first coil (4) and the second coil (6) are connected in series in such a way that the result is a current flow in the same direction in the coils (4, 6).