Dual Port Power Control Circuit with Priority Conflict Avoidance
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Solution Overview
Problem
Existing power control circuits for electronic devices lack operability and convenience in managing power transmission and reception across different ports, leading to potential power conflicts when multiple ports are used simultaneously.
Innovation Solution
A power control circuit with dual receiving and supply circuits, allowing selective power transmission or data reception through multiple ports, with priority given to one port's voltage to prevent conflicts, and enabling/disabling of circuits based on specific transmission signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single receiving circuit is used for charging, then the circuit structure is simple, but the convenience of selecting different charging ports is reduced
Solution Approach 1:
The power control circuit is divided into a first receiving circuit and a second receiving circuit, each independently connected to different ports (first port and second port). This segmentation allows each circuit to independently handle charging from its respective port, enabling users to select different charging ports conveniently while maintaining a modular and manageable circuit structure.
2Ease of operation
If multiple receiving circuits are used for different ports, then the convenience of port selection is improved, but power conflicts may occur when both ports are used simultaneously
Solution Approach 1:
The circuit includes a priority control mechanism that determines in advance which receiving circuit has priority when both ports are connected. The first receiving circuit is given priority over the second receiving circuit. This preliminary determination prevents power conflicts by ensuring that only the priority circuit charges the power unit when both ports are simultaneously connected, eliminating the risk of conflicting charging currents.
Solution Approach 2:
A control circuit acts as an intermediary between the first and second receiving circuits. It monitors the status of both ports and controls the enabling/disabling of each receiving circuit based on priority rules. This intermediary ensures that power conflicts are avoided by coordinating the operation of multiple receiving circuits, allowing convenient port selection while maintaining system reliability.
3Power
If both receiving circuits can operate simultaneously, then the power reception capability is maximized, but power conflicts and instability occur
Solution Approach 1:
The system pre-establishes a priority relationship between the first and second receiving circuits before any charging operation begins. The first receiving circuit is configured with higher priority. When both ports are connected, the control circuit enables only the first receiving circuit to charge the power unit, preventing simultaneous operation that would cause power conflicts. This preliminary priority setup maximizes power reception from the primary port while ensuring power stability through conflict avoidance.
Data Source
AI summary
A power control circuit is disclosed. The power control circuit includes a first receiving circuit, a second receiving circuit, a first power supply circuit and a second power supply circuit. The first receiving circuit is electrically connected to a charging circuit and a first port and configured to charge a power unit according to a first port voltage. The second receiving circuit is electrically connected to the charging circuit and a second port and configured to charge the power unit according to a second port voltage. The second receiving circuit is further configured to be disabled according to the first port voltage. The first power supply circuit is configured to supply power to the first port. The second power supply circuit is configured to supply power to the second port. Thus, the power control circuit transmits power or data through different ports.