Power Conversion Circuit Signal Multiplexing for Fewer Terminals
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Solution Overview
Problem
Existing power conversion circuits face challenges in efficiently managing and communicating control signals and data signals between control circuits and power conversion circuits, particularly in identifying and prioritizing alarm and data signals, which can lead to increased complexity and terminal count.
Innovation Solution
The proposed circuit apparatus integrates a transmission apparatus that superimposes control signals, clock signals, and data signals using photocouplers and Zener diodes, allowing for signal identification and prioritization through amplitude and timing differences, reducing the number of terminals required and enhancing signal communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control signals and data signals are transmitted separately through dedicated terminals, then signal transmission reliability is improved, but the number of terminals and circuit complexity increase
Solution Approach 1:
The patent combines control signals and data signals into a single signal line for transmission. The control circuit and power conversion circuit share a common signal terminal, allowing both control commands and data to be transmitted through the same physical connection, thereby reducing terminal count and circuit complexity while maintaining reliable communication
Solution Approach 2:
The signal terminal serves multiple functions by handling both control signals and data signals. This multi-functional terminal design eliminates the need for separate dedicated terminals for each signal type, reducing overall circuit complexity while ensuring reliable signal transmission through proper timing and identification mechanisms
2Device complexity
If multiple signal types are transmitted through a single terminal, then terminal count is reduced, but signal identification and prioritization become more difficult
Solution Approach 1:
The patent employs periodic timing patterns to distinguish between control signals and data signals. By assigning specific time slots and periodic intervals for different signal types, the power conversion circuit can reliably identify and process signals in the correct sequence, maintaining signal identification accuracy even when multiple signal types share a single terminal
Solution Approach 2:
The patent uses parameter variations such as signal amplitude levels and timing characteristics to differentiate between control signals and data signals. By encoding signal identity in these parameters, the system enables reliable signal identification and prioritization without requiring separate physical terminals, thus reducing circuit complexity while maintaining detectability
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 solution enables efficient communication and identification of signals, reducing terminal count and improving signal processing efficiency while maintaining priority for alarm signals, thus enhancing the operational reliability of power conversion circuits.
Implementation Method 1
a control signal and a data signal input from the control circuit 100 to the power conversion circuit 200 are transmitted by a transmission apparatus 300
Implementation Method 2
superimposes control signals, clock signals, and data signals using photocouplers and Zener diodes
Data Source
AI summary
Provided is a circuit apparatus including a power conversion circuit, and a control circuit which controls the power conversion circuit, in which the power conversion circuit includes a control terminal to which a control signal from the control circuit is input, an output terminal from which an output signal is output to the control circuit, and a data identification unit which identifies an input data signal input to the output terminal. A first superimposed signal in which the output signal and the input data signal are superimposed on each other may be input to the data identification unit, and the data identification unit may identify the input data signal based on the first superimposed signal and the output signal.