Voltage-Threshold Channel Circuit for Shared Power and Signal Pins
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Solution Overview
Problem
Existing electronic devices require separate input and output pins for power and signal channels, leading to increased pin count, area occupation, and cost.
Innovation Solution
A channel circuit with a power channel switch, signal channel switch, control module, and comparison module that controls the switches based on input voltage thresholds, allowing for multiplexing of power and signal transmission on a single pin by turning on/off the switches accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate input pins and output pins are used for power channel and signal channel, then the transmission function is reliable, but the number of pins increases and occupation area increases
Solution Approach 1:
The patent merges the power channel and signal channel into a single shared pin (IN pin). The channel circuit includes a power channel switch and a signal channel switch that share the same input pin, allowing both power and signal transmission through the same physical connection point, thereby reducing pin count and occupation area while maintaining transmission reliability through voltage-threshold-based automatic switching.
Solution Approach 2:
The patent implements dynamic switching between power channel and signal channel based on input voltage thresholds. The control module compares the input voltage with predetermined thresholds and dynamically controls the switches to connect the shared pin to either the power channel or signal channel, enabling the system to adapt its transmission mode in real-time based on voltage conditions.
2Reliability
If separate input pins and output pins are used for power channel and signal channel, then the transmission function is reliable, but the cost increases
Solution Approach 1:
The patent merges the power channel and signal channel into a single shared pin (IN pin). The channel circuit includes a power channel switch and a signal channel switch that share the same input pin, allowing both power and signal transmission through the same physical connection point, thereby reducing pin count and occupation area while maintaining transmission reliability through voltage-threshold-based automatic switching.
3Area of stationary object
If a single pin is used for both power and signal transmission, then the number of pins is reduced, but the switching control complexity increases
Solution Approach 1:
The patent implements a feedback-based control mechanism where the control module continuously monitors the input voltage and compares it with predetermined thresholds. Based on the comparison results, the control module automatically adjusts the state of the power channel switch and signal channel switch, creating a closed-loop control system that manages the complexity of switching between power and signal transmission modes.
Solution Approach 2:
The channel circuit performs self-service by automatically switching between power and signal channels based on the input voltage level. The comparison module and control module work together to detect voltage conditions and autonomously control the switches without requiring external intervention, thereby managing switching complexity through self-contained voltage-threshold-based control logic.
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 effectively reduces the number of pins needed, saving area and cost while enabling accurate switching of power and signal transmission based on voltage thresholds, thus adapting to circuit requirements.
Implementation Method 1
the comparison module is connected to the circuit input end and is configured to compare an input voltage with a specified voltage threshold
Data Source
AI summary
Disclosed area channel circuit and an electronic device, including a power channel switch, a signal channel switch, a control module, and a comparison module. The power channel switch is connected between a circuit input end and a first circuit output end, and the signal channel switch is connected between the circuit input end and a second circuit output end. The comparison module is connected to the circuit input end and is configured to compare an input voltage with a specified voltage threshold, including a first voltage threshold, and feedback corresponding comparison results to the control module. The control module is configured to turn on the signal channel switch and turn off the power channel switch when the input voltage is lower than the first voltage threshold, and to turn on the signal channel switch when the input voltage is higher than the first voltage threshold.