Multi-phase Power Supply Dynamic Load Control
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Solution Overview
Problem
Conventional power converters, such as buck converters, face challenges in efficiently regulating output voltage and current delivery to dynamic loads, particularly in systems aiming to reduce environmental impact through green energy usage.
Innovation Solution
A controller is implemented to manage multiple power converter phases, determining and controlling the magnitudes of output currents from each phase based on the total output current consumed by the dynamic load, thereby optimizing power delivery and reducing energy wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional buck converter is used to regulate output voltage, then the output voltage can be maintained within a desired range, but the efficiency of energy conversion and delivery to dynamic loads is insufficient
Solution Approach 1:
The power converter is divided into multiple independent phases (first power converter phase, second power converter phase) that can operate simultaneously. Each phase has its own controller that independently regulates output voltage while contributing to total power delivery, thereby improving both energy conversion efficiency and power delivery capability
Solution Approach 2:
The controller dynamically adjusts the output current magnitude of each phase based on real-time monitoring of total output current and load conditions. This dynamic control allows the system to optimize the distribution of power across phases, maximizing energy efficiency while meeting varying power delivery demands
2Adaptability or versatility
If a single power converter phase is used, then the device complexity is low, but the adaptability to varying load conditions is limited
Solution Approach 1:
The system uses multiple power converter phases with identical or similar structures, each capable of independent operation. This segmentation provides redundancy and adaptability to varying load conditions while maintaining relatively simple individual phase designs
Solution Approach 2:
Each power converter phase is designed to perform the same voltage regulation function and can independently handle different load conditions. The controller coordinates multiple phases to collectively serve various power delivery requirements, enhancing system versatility without requiring fundamentally different circuit topologies
3Loss of energy
If the output current magnitude is not dynamically controlled, then the control system is simple, but the energy wastage increases
Solution Approach 1:
The controller continuously monitors the total output current and uses this feedback to dynamically adjust the magnitude of output current from each power converter phase. This closed-loop control minimizes energy wastage by optimizing current distribution according to actual load requirements
Solution Approach 2:
The controller is configured to proactively adjust output current magnitudes based on monitored total current levels, preventing energy wastage before it occurs by maintaining optimal current distribution across phases under varying operating conditions
Data Source
AI summary
An apparatus includes a controller. The controller is operative to determine a magnitude of first output current supplied from a first power converter to a dynamic load and determine a magnitude of second output current supplied from a second power converter to power the dynamic load. The controller controls a magnitude of the first output current with respect to a magnitude of the second content output current depending on a magnitude of total output current consumed by the dynamic load.