Processor-Controlled Power Supply Management Circuit
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Solution Overview
Problem
Existing power supply management systems lack efficient and adaptive control mechanisms to manage voltage and current delivery to electronic devices, particularly in scenarios such as low-power states, decoupling, and fault conditions, which can lead to inefficiencies and potential damage.
Innovation Solution
A management circuit with a processor-controlled switch and impedance circuits that monitor voltage and current levels at output terminals to control power delivery, distinguishing between connected and disconnected states, low-power scenarios, and fault conditions, thereby ensuring safe and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a management circuit with processor-controlled switch is implemented, then power supply control precision and safety are improved, but device complexity increases
Solution Approach 1:
The management circuit continuously monitors output voltage and current parameters through sensing circuits, feeds this information back to the processor, and dynamically adjusts the switch control signals to maintain safe operating conditions. This closed-loop feedback mechanism enables precise power supply control while automating safety decisions, reducing the need for complex manual intervention circuits.
Solution Approach 2:
The management circuit acts as an intermediary between the power supply output and the electronic device, inserting a controlled switching element that mediates power delivery. This intermediary structure isolates the complex control logic from the main power path, allowing sophisticated monitoring and control functions to be added without proportionally increasing the complexity of the power delivery path itself.
2Measurement precision
If real-time monitoring of voltage and current is implemented, then fault detection capability is improved, but energy consumption increases
Solution Approach 1:
The management circuit implements monitoring at critical thresholds rather than continuously tracking every parameter variation. The processor evaluates voltage and current readings against predefined safety margins and fault conditions, activating full monitoring only when parameters approach critical levels. This partial monitoring approach maintains high fault detection accuracy while reducing the average energy consumption of the monitoring system.
Solution Approach 2:
The management circuit dynamically adjusts monitoring intensity based on operating conditions. During normal operation, monitoring occurs at lower intensity with reduced processor intervention. When parameters approach critical thresholds or fault conditions are detected, the circuit transitions to high-intensity monitoring with increased sampling rates and more frequent processor evaluations, optimizing the balance between detection accuracy and energy consumption.
Data Source
AI summary
Circuitry and techniques for managing a power supply are disclosed. A processor-controlled switch is employed to control the delivery of power to conductors that provide power to an external electronic device wherein the processor controls the switch opening and the switch opening based not only on contemporaneous parameter measurements but also on state information known to the processor. The management circuit can control the power supply without requiring the use of an additional sense wire between the management circuit and the external electronic device.