Isolation Device Using Oscillator Frequency Matching
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Solution Overview
Problem
The requirement for multiple isolation devices to transmit signals across an isolation barrier increases costs and poses space constraints in integrated circuit packages, especially when dealing with electrical circuits operating at different voltages.
Innovation Solution
The isolation device employs a single package with two semiconductor dies separated by an isolation material, utilizing stand-alone oscillators with similar components to generate clock signals with frequencies that differ by less than 10% to enable efficient signal transmission across the isolation barrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple isolation devices are used to transmit signals across an isolation barrier, then signal transmission reliability is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent combines multiple isolation device functions into a single integrated isolation device that can transmit multiple signals across the isolation barrier simultaneously. The device includes multiple signal paths within one package, eliminating the need for multiple separate isolation devices while maintaining signal transmission reliability.
Solution Approach 2:
The isolation device is designed with multi-functional capability to handle multiple signal types and multiple voltage levels through a single device. The device can isolate and transmit various signals (digital, analog, power) across different voltage barriers, providing universal isolation functionality that replaces multiple specialized isolation devices.
2Reliability
If multiple isolation devices are used to transmit signals across an isolation barrier, then signal transmission reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines multiple isolation device functions into a single integrated isolation device that can transmit multiple signals across the isolation barrier simultaneously. The device includes multiple signal paths within one package, eliminating the need for multiple separate isolation devices while maintaining signal transmission reliability.
3Reliability
If isolation devices are used in integrated circuit packages, then electrical isolation between different voltage circuits is achieved, but space constraints are imposed
Solution Approach 1:
The patent combines multiple isolation device functions into a single integrated isolation device that can transmit multiple signals across the isolation barrier simultaneously. The device includes multiple signal paths within one package, eliminating the need for multiple separate isolation devices while maintaining signal transmission reliability.
4Reliability
If multiple isolation devices are used, then complete signal isolation and transmission is achieved, but power consumption increases
Solution Approach 1:
The patent combines multiple isolation device functions into a single integrated isolation device that can transmit multiple signals across the isolation barrier simultaneously. The device includes multiple signal paths within one package, eliminating the need for multiple separate isolation devices while maintaining signal transmission reliability.
Data Source
AI summary
An isolation device having first and second semiconductor is disclosed. The first semiconductor die may be adapted to transmit a first signal to the second semiconductor die that is electrically isolated. The first semiconductor die may have a transmitter coupled to a modulator that modulates the first signal. The second semiconductor die may have a receiver having a counter and a control circuit. The control circuit may be adapted to determine an indication of the first signal by using the counter. In addition, an isolation system and a DC-DC feedback regulation control system having such control circuit are disclosed. Likewise, a method for conveying a first signal across an isolation barrier is disclosed. The method may comprise counting a received signal based on internal clock and determining an indication of the first signal from the counter's count value.