Single Isolation Transformer for Power and Duplex Data
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Solution Overview
Problem
Conventional methods for transmitting data, timing information, and power between isolated systems are inefficient and provide poor performance, requiring separate isolators for each type of signal.
Innovation Solution
The use of a single isolation transformer to simultaneously transmit power, clock signals, and duplex data communication, employing a three-level coding scheme with positive and negative half-cycle waveforms and pauses to encode and decode data, allowing for full duplex communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate isolators are used for each type of signal (data, timing information, power), then signal transmission between isolated systems is achieved, but resource efficiency deteriorates and device complexity increases
Solution Approach 1:
The patent combines multiple signal transmission functions (data, timing information, and power) into a single isolator device. The isolator simultaneously transmits differential data signals, timing information, and power from primary to secondary side, eliminating the need for separate isolators for each signal type and reducing overall device complexity while maintaining transmission reliability
Solution Approach 2:
The isolator is designed to perform multiple functions simultaneously: transmitting data signals, timing information, and power through the same isolation barrier. This multi-functional approach allows a single device to replace what would traditionally require multiple specialized isolators, improving resource efficiency without compromising signal integrity
2Reliability
If separate isolators are used for each type of signal, then signal isolation is achieved, but resource efficiency deteriorates
Solution Approach 1:
The patent merges multiple signal transmission paths into a single isolator, allowing simultaneous transmission of data, timing information, and power through one isolation barrier. This consolidation improves resource efficiency by eliminating redundant isolator components and their associated energy consumption, while maintaining proper galvanic isolation between primary and secondary systems
3Reliability
If conventional separate isolator approaches are used, then signal transmission is achieved, but communication efficiency deteriorates
Solution Approach 1:
The isolator enables continuous simultaneous transmission of data signals, timing information, and power in both directions between isolated systems. This continuous multi-functional operation improves communication efficiency by eliminating the need for sequential or separate transmission processes that would be required with conventional separate isolators
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 enables efficient and high-performance transmission of data, timing information, and power between isolated systems, optimizing resource use and improving communication efficiency.
Implementation Method 1
a first communication circuit (101), a second communication circuit (102) and an isolation device (103)... transferring power, a clock signal and duplex data communication between two isolated systems using a single isolation transformer
Implementation Method 2
one side of the isolation device can include circuitry to rectify at least a portion of the received signals and provide a power supply rail
Data Source
AI summary
Techniques for duplex communication and power transfer across an isolator are provided. In an example, a first transceiver coupled to a first side of an isolator can include a transmit modulator configured to receive first data and timing signals, to provide control signals to oscillate an output of the transceiver to transmit power and to order each half-cycle of an oscillation cycle of the output to transmit the first data. A second transceiver coupled to a second side of the isolator can include a receive detection circuit configured to compare a received oscillation cycle with a plurality of thresholds and to provide a plurality of comparator outputs indicative of reception of the positive half-cycle and the negative half-cycle, and a receive decoder configured to identify the order of half-cycles and to provide an output indicative of logic level of the first data.