Power Supply Circuit With Dynamic Compensation for Load Transients
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Solution Overview
Problem
The rapid switching of loads between heavy and light loads in power supply circuits leads to voltage spikes and sags, causing damage and operational failures in loads such as CPUs and GPUs.
Innovation Solution
A power supply circuit with a power conversion module, compensation module, sampling module, and gain-adjustable drive module that dynamically adjusts voltage and current to suppress spikes and sags, using gain-adjustable drive voltages and compensation currents to regulate output voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the load switches from heavy load to light load, then the power supply current decreases, but a voltage spike is generated that causes damage to the load
Solution Approach 1:
The compensation module is activated in advance to detect voltage spikes before they reach damaging levels. By monitoring the output voltage and preemptively adjusting the compensation current, the system prevents voltage spikes from causing harm rather than merely reacting after they occur.
Solution Approach 2:
The sampling module continuously monitors the output voltage and feeds this information back to the compensation module. This closed-loop feedback mechanism enables real-time detection of voltage variations and automatic adjustment of compensation current to suppress voltage spikes, creating a self-regulating system that responds dynamically to load changes.
2Productivity
If the load switches from light load to heavy load, then the power supply current increases, but a significant voltage sag is generated that causes insufficient power supply to the load
Solution Approach 1:
The compensation module anticipates voltage sags by monitoring load current changes and preemptively increases the compensation current before the voltage sags become significant. This advance action ensures that the load receives adequate voltage support during transitions to heavy load conditions.
Solution Approach 2:
The sampling module detects voltage sags in real-time and feeds this information back to the compensation module, which automatically increases the compensation current to counteract the voltage sag. This feedback mechanism ensures continuous voltage stability despite rapid load transitions.
3Device complexity
If conventional power supply circuits are used without compensation modules, then the device complexity is reduced, but the load is vulnerable to voltage spikes and sags during dynamic operation
Solution Approach 1:
The compensation module acts as an intermediary component between the power conversion module and the load. It introduces a compensation current that mediates the voltage fluctuations caused by load transitions, protecting the load from voltage spikes and sags while maintaining overall system simplicity through modular design.
Solution Approach 2:
The compensation module dynamically changes the compensation current parameter based on load conditions. By adjusting this current parameter in response to voltage variations, the system protects against voltage fluctuations without requiring complex structural modifications to the overall power supply circuit.
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
The solution effectively prevents damage from voltage spikes and ensures stable operation by suppressing voltage fluctuations during load transitions, enhancing efficiency and response speed.
Implementation Method 1
The power conversion module may be configured to: convert a first direct current voltage into a second direct current voltage and output the second direct current voltage to the load, where a voltage value of the second direct current voltage is less than a voltage value of the first direct current voltage
Implementation Method 2
The sampling module may be configured to: collect a voltage of the load, convert the voltage of the load into a first sampling voltage, and output the first sampling voltage to the gain-adjustable drive module
Implementation Method 3
The compensation module may be configured to output a compensation current to the load or bleed an output current of the power conversion module based on the first direct current voltage and the gain-adjustable drive voltage. The compensation current may be used to regulate the second direct current voltage
Data Source
AI summary
This application provides a power supply circuit. The power supply circuit may include a power conversion module, a compensation module, a sampling module, and a gain-adjustable drive module. The power conversion module is configured to: convert a first direct current voltage into a second direct current voltage and output the second direct current voltage to the load. The sampling module is configured to: collect a voltage of the load, convert the voltage of the load into a first sampling voltage, and output the first sampling voltage to the gain-adjustable drive module. The gain-adjustable drive module is configured to output a gain-adjustable drive voltage to the compensation module based on the first sampling voltage. The compensation module may be configured to output a compensation current to the load or bleed an output current of the power conversion module based on the first direct current voltage and the gain-adjustable drive voltage.