Adjustable Auxiliary Power Supply for LED Drivers
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Solution Overview
Problem
Traditional linear regulators in auxiliary power supplies for LED lighting systems experience significant power loss due to large voltage differences between input and output, leading to increased costs and reduced operating times, making them unsuitable for efficient energy management.
Innovation Solution
An adjustable auxiliary power supply with a voltage regulator, first and second input voltage circuits, and an adjustable resistance circuit, which selects the appropriate input voltage based on a voltage selection signal to minimize power loss across the voltage regulator, allowing for dynamic adjustment of output voltage and reducing heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a traditional linear regulator is used with a fixed input voltage, then the circuit structure is simple, but large power loss occurs when there is a large difference between input voltage and output voltage
Solution Approach 1:
The patent implements dynamic voltage regulation by switching between multiple input voltage circuits (first input voltage circuit and second input voltage circuit) based on the required output voltage. The controller dynamically selects which input voltage circuit to use, making the system adaptable to different operating conditions and minimizing power loss across the linear regulator by reducing the voltage differential.
Solution Approach 2:
The system changes the input voltage parameter dynamically by selecting from different input voltage circuits. When the LED driver requires a lower output voltage, the controller selects the first input voltage circuit with a lower input voltage, thereby reducing the voltage drop across the linear regulator and minimizing power loss.
2Loss of energy
If the input voltage is increased to ensure sufficient output voltage, then the output voltage requirement is met, but power loss and heat generation increase
Solution Approach 1:
The system dynamically adjusts the input voltage parameter based on the required output voltage. By selecting from multiple input voltage circuits with different voltage levels, the system optimizes the voltage differential across the linear regulator, thereby reducing power loss and the associated heat generation.
3Adaptability or versatility
If a single fixed output voltage is used, then the circuit is simple, but the system cannot adapt to different LED lighting settings and power requirements
Solution Approach 1:
The patent implements a dynamic voltage selection mechanism where the controller can switch between different input voltage circuits based on the required output voltage and LED lighting settings. This dynamic adaptability allows the system to optimize power delivery for different operating conditions while managing power loss effectively.
4Loss of energy
If multiple input voltage circuits are used to minimize power loss, then power efficiency improves, but the device complexity increases
Solution Approach 1:
The system uses a dynamic switching mechanism controlled by a controller that selects between multiple input voltage circuits based on the required output voltage. This dynamic approach allows the system to achieve lower power loss by matching the input voltage to the output requirements, while the controller manages the complexity of coordinating multiple circuits.
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 manages power loss and heat generation across the voltage regulator, enhancing the efficiency and longevity of the LED driver by dynamically adjusting the output voltage and input voltage, thereby reducing overall costs and energy consumption.
Implementation Method 1
a voltage regulator that receives an input voltage from one of the first and second input voltage circuits and outputs an auxiliary power supply voltage
Data Source
AI summary
An adjustable auxiliary power supply for a light emitting diode (LED) driver for adjusting an auxiliary power output includes a voltage regulator configured to receive a regulator input voltage and to output an auxiliary power supply voltage selected from a first output voltage and a second output voltage according to a voltage selection signal used to control an LED lighting setting. The adjustable auxiliary power supply includes a first and second input voltage circuits configured to selectively output respective first and second input voltages to the voltage regulator. The adjustable auxiliary power supply includes an adjustable resistance circuit coupled to the voltage regulator. The adjustable resistance circuit controls the auxiliary power supply voltage based upon an adjustable resistance setting of the adjustable resistance circuit. The adjustable resistance setting is configured to correspond to at least one of the first output voltage and the second output voltage.