Lighting Device Driving Circuit with Dynamic Step-Up Control
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Solution Overview
Problem
Existing lighting device driving circuits face inefficiencies due to high step-up ratios when operating with low input voltages, leading to significant differences in efficiency between high and low voltage conditions, making them unsuitable for countries with low voltage standards.
Innovation Solution
A lighting device driving circuit design incorporating a rectifying module, constant-voltage module, input signal collecting module, constant-voltage signal collecting module, and constant-voltage control module, which integrates feedback signals to adjust constant-voltage signals, enhancing voltage following effects and optimizing efficiency across varying input voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a constant-voltage circuit with voltage reduction circuit is used to prevent lighting devices from flickering, then the lighting stability is improved, but the operating efficiency significantly decreases when operating with low input voltages due to high step-up ratios
Solution Approach 1:
The patent implements dynamic adjustment of the step-up ratio in the constant-voltage circuit based on the detected input voltage level. When low input voltage is detected, the circuit automatically adjusts to a higher step-up ratio, and when high input voltage is detected, it reduces the step-up ratio. This dynamic adaptation resolves the contradiction by optimizing efficiency across different voltage conditions while maintaining stable lighting output.
Solution Approach 2:
The patent employs a feedback mechanism where the operating status (input voltage level) is detected and fed back to the constant-voltage control module. This feedback enables the system to automatically adjust the step-up ratio to match the input conditions, thereby resolving the efficiency problem while maintaining lighting stability through proper voltage regulation.
2Adaptability or versatility
If a universal voltage circuit design is implemented to work with different voltage standards, then the adaptability is improved, but the operating efficiency varies significantly between high and low voltage conditions
Solution Approach 1:
The patent makes the constant-voltage circuit dynamically adaptable to different input voltage conditions by automatically adjusting the step-up ratio based on detected voltage levels. This dynamic behavior enables the circuit to maintain high efficiency across both high and low voltage standards while preserving universal adaptability.
Solution Approach 2:
The patent changes the operating parameters (step-up ratio) of the constant-voltage circuit based on the input voltage conditions. By adjusting this parameter dynamically, the circuit achieves consistent high efficiency across different voltage standards, resolving the contradiction between universality and efficiency.
3Adaptability or versatility
If a high step-up ratio is used in the constant-voltage circuit to handle low input voltages, then the ability to operate with low voltage standards is improved, but the operating efficiency significantly decreases
Solution Approach 1:
The patent implements dynamic adjustment of the step-up ratio based on the actual input voltage level. When low input voltage is detected, the circuit increases the step-up ratio to maintain operation capability. When high input voltage is detected, it reduces the step-up ratio to maintain high efficiency. This dynamic adaptation resolves the contradiction between low voltage capability and efficiency.
Solution Approach 2:
The patent changes the step-up ratio parameter of the constant-voltage circuit according to the input voltage conditions. This parameter adjustment enables the circuit to achieve both low voltage operation capability and high efficiency by matching the step-up ratio to the actual operating conditions.
Data Source
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AI summary
A lighting device driving circuit with high operating efficiency is provided, which includes a rectifying module, a constant-voltage module, an input signal collecting module, a constant-voltage signal collecting module and a constant-voltage control module. The rectifying module receives a power signal from a power source input terminal to generate a rectified voltage signal. The constant-voltage module receives the rectified voltage signal to generate a constant-voltage signal. The input signal collecting module receives the power signal or the rectified voltage signal to generate a first feedback signal. The constant-voltage signal collecting module receives the first feedback signal and the constant-voltage signal to generate a second feedback signal. The constant-voltage control module generates a control signal according to the second feedback signal so as to control the constant-voltage module to adjust the constant-voltage signal and drive a load.