Adjustable Power Supply Bypass for DC-DC Conversion Efficiency
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Solution Overview
Problem
Conventional power supply systems maintain a constant voltage output, leading to inefficient voltage conversion when a high-voltage load enters sleep mode, resulting in high voltage differences across DC-DC converters and reduced efficiency.
Innovation Solution
A power supply system that adjusts its output voltage based on the required voltage of operational loads, using a bypass unit to provide adjusted voltage to sub-loads when the main load is inactive, thereby preventing large voltage differences during conversion and enhancing overall efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power supply maintains constant voltage output equal to the highest required voltage, then all loads can be powered, but the DC-DC voltage converter operates with large voltage difference resulting in low conversion efficiency
Solution Approach 1:
The power supply voltage is made dynamically adjustable based on the operational status of loads. When the main load enters sleep mode, the power supply voltage is lowered from the highest required voltage to match the sub-load voltage requirements, eliminating the large voltage difference across the DC-DC converter and improving conversion efficiency.
Solution Approach 2:
The voltage parameter of the power supply is changed from a fixed constant value to a variable value that adapts to the operational requirements of connected loads. This parameter change allows the system to optimize conversion efficiency by matching the power supply voltage to the actual voltage needs of active loads.
2Power
If the power supply maintains high voltage output, then the main load can operate, but energy is wasted when the main load is inactive and voltage conversion is still performed
Solution Approach 1:
The power supply dynamically adjusts its output voltage based on the operational state of the main load. When the main load is active, high voltage is provided; when the main load enters sleep mode, the voltage is reduced to match sub-load requirements, preventing unnecessary energy consumption during voltage conversion.
Solution Approach 2:
The power supply system automatically detects the operational status of the main load and self-adjusts the voltage output accordingly. The controller monitors the main load state and autonomously modifies the power supply voltage to optimize energy efficiency without requiring external intervention.
3Power
If the DC-DC voltage converter operates with large voltage difference, then high voltage can be provided to the main load, but the conversion efficiency deteriorates
Solution Approach 1:
The voltage difference across the DC-DC converter is dynamically controlled by adjusting the power supply voltage to match the voltage requirements of active loads. When the main load is inactive, the power supply voltage is reduced, thereby minimizing the voltage difference across the converter and optimizing conversion efficiency.
Solution Approach 2:
The input voltage parameter to the DC-DC converter is changed from a fixed high value to a variable value that adapts to the operational requirements. This parameter adjustment reduces the voltage conversion ratio when the main load is inactive, improving the converter's efficiency.
Data Source
AI summary
A power supply system is provided. The power supply system includes a power supply, a main load unit, a DC-DC voltage conversion unit, a bypass unit, and at least one sub-load unit. The power supply is configured to provide an adjustable supply voltage. The main load unit is electrically connected to the power supply for receiving the supply voltage. The DC-DC voltage conversion unit is electrically connected to the power supply. The bypass unit is electrically connected to the power supply. The at least one sub-load unit is electrically connected to the DC-DC voltage conversion unit and the bypass unit. When the main load unit stops operating, the power supply adjusts the supply voltage and provides the adjusted supply voltage to the sub-load unit through the bypass unit.