Power Source Boost Circuit Voltage Limiter Stabilization
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Solution Overview
Problem
Power source boost systems in aircraft displays face challenges in maintaining a stable output voltage over a wide range of input voltages and output loads, making it difficult to generate a substantially constant voltage that is independent of input voltage and load variations.
Innovation Solution
A power supply boost circuit with a feed forward loop and a feedback loop comprising a voltage limiter is used to stabilize the output voltage, where the voltage limiter compares the output voltage to a reference voltage and limits the voltage supplied to the feed forward loop within a predetermined range, ensuring a constant output voltage regardless of input voltage and load variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a conventional power source boost system is used, then the system can generate voltages greater than the supply voltage, but the output voltage varies with input voltage and load changes
Solution Approach 1:
The patent implements a feedback loop that continuously monitors the output voltage and adjusts the boost circuit operation accordingly. The feedback signal is derived from the output voltage and fed back to the control mechanism to maintain a substantially constant output voltage despite variations in input voltage or load conditions.
Solution Approach 2:
The patent employs a feed-forward loop that anticipates changes in input voltage or load conditions and adjusts the boost circuit operation in advance. By detecting input voltage variations or load changes before they affect the output, the system proactively compensates to maintain stable output voltage.
2Adaptability or versatility
If the boost system operates over a wide range of input voltages, then the system is more versatile, but the output voltage becomes less stable
Solution Approach 1:
The feedback loop continuously monitors output voltage and adjusts the boost circuit duty cycle or switching parameters to compensate for wide input voltage variations, maintaining stable output across the entire input voltage range.
Solution Approach 2:
The feed-forward loop detects input voltage changes and preemptively adjusts the boost circuit operation to prevent output voltage deviations, enabling the system to handle wide input voltage ranges while maintaining output stability.
3Adaptability or versatility
If the boost system drives variable load currents, then the system is more flexible, but the output voltage varies with load
Solution Approach 1:
The feedback mechanism monitors output voltage under varying load conditions and adjusts the boost circuit parameters to compensate for load-induced voltage variations, maintaining constant output voltage across the full load range.
Solution Approach 2:
The feed-forward loop anticipates load changes and adjusts the boost circuit operation in advance to prevent output voltage deviations, enabling flexible load driving while maintaining voltage stability.
Data Source
AI summary
Systems and methods for producing a substantially constant output voltage in a power source boost system are provided. A power supply boost circuit includes an output node for supplying an output voltage, a feed forward loop configured to be coupled to a load and a power source, and a feedback loop including a voltage limiter coupled to the feed forward loop and the output node. One power source boost system includes the above power source boost coupled to a load and a power source. A method includes the steps of comparing, via a feedback loop, a constant voltage to a reference voltage, and stabilizing a power source boost system over a range of input voltages and load variations. The stabilizing step includes the step of limiting, via a limiter, a voltage supplied to a feed forward loop to a predetermined range of voltages based on the comparing step.