Isolation Transformer Barrier for Combined Data and Power Transfer
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Solution Overview
Problem
Existing isolation barrier implementations require separate barriers for data and power, leading to increased size and cost, as they isolate data inputs and outputs from external connections and power separately.
Innovation Solution
A single isolation barrier is used for both data and power by modulating data onto the same isolation channel as used for power isolation, employing a transformer with dual windings and a bridge rectifier to achieve galvanic isolation for both data and power signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate isolation barriers are used for data and power, then data isolation and power isolation are achieved, but device size and cost increase
Solution Approach 1:
The patent combines separate data isolation and power isolation barriers into a single integrated isolation transformer. The transformer's primary winding connects to power input terminals, while the secondary winding provides both isolated power output and data communication channels. This merging eliminates the need for separate isolation components, reducing device size and complexity while maintaining effective isolation for both data and power signals.
Solution Approach 2:
The isolation transformer is designed to perform multiple functions simultaneously: it provides galvanic isolation for power delivery, enables data communication through its windings, and establishes reference potentials. The single device serves as both a power isolation barrier and a data isolation barrier, making the system more compact and cost-effective while achieving comprehensive isolation.
2Reliability
If separate isolation barriers are used for data and power, then data isolation and power isolation are achieved, but manufacturing cost increases
Solution Approach 1:
The patent combines separate data isolation and power isolation barriers into a single integrated isolation transformer. The transformer's primary winding connects to power input terminals, while the secondary winding provides both isolated power output and data communication channels. This merging eliminates the need for separate isolation components, reducing device size and complexity while maintaining effective isolation for both data and power signals.
Solution Approach 2:
The isolation transformer is designed to perform multiple functions simultaneously: it provides galvanic isolation for power delivery, enables data communication through its windings, and establishes reference potentials. The single device serves as both a power isolation barrier and a data isolation barrier, making the system more compact and cost-effective while achieving comprehensive isolation.
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 approach reduces size and cost while effectively isolating both data and power signals, ensuring efficient data transfer and power delivery in a compact and cost-effective manner.
Implementation Method 1
a transformer with dual windings... effectively isolating both data and power signals
Implementation Method 2
employing a transformer with dual windings and a bridge rectifier to achieve galvanic isolation
Data Source
AI summary
A semiconductor package includes a transformer having a primary winding and a secondary winding. The primary winding has first and second terminals and a pair of taps. The secondary winding has first and second terminals and a pair of taps. The semiconductor package includes first and second data transfer circuits, a bridge, and a rectifier. The first data transfer circuit is coupled to the pair of taps of the primary winding. The second data transfer circuit is coupled to the pair of taps of the secondary winding. The bridge is coupled to the first and second terminals of the primary winding. The rectifier is coupled to the first and second terminals of the secondary winding.