AL9910AEV2

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Evaluation Boards - LED Drivers are powered by wall adapters, AC-DC adapters or batteries that provide a steady current source and produce a constant, direct current source with minimal voltage ripple and low EMI. AL9910AEV2 is one such Evaluation Board - LED Driver that is mainly used for lighting applications, specifically for driving constant current LED lamp fixtures. The AL9910AEV2 has the following features and advantages:

Performance:

• Integrates a high accuracy LED current controller, sense resistor and LED current flow protection.
• Exceptional light quality, with less than 5% electrode fluctuation, low harmonic distortion and fewer current surges.
• Built-in thermal protection circuits to automatically reduce brightness if thermal conditions are exceeded, providing an added layer of safety.
• Wide input voltage range, allowing the device to operate within the range of 3.3 V-30 V.

Applications:

• The AL9910AEV2 Evaluation Board - LED Driver is suitable for driving a wide variety of constant current LED lamps, including lighter fixtures, residential lighting fixtures and industrial lighting fixtures.
• It is especially suitable for places where strict EMI performance is required, such as hospitals and airports.
• It is also suitable for outdoor applications that require high efficiency and high power density.

Working Principle:

The AL9910AEV2 Evaluation Board - LED Driver utilizes the Pulse Width Modulation (PWM) method to convert a given input voltage into a constant LED current, thus controlling the brightness of the LED fixtures. The controller uses an internal current sense resistor and sense amplifier to monitor the current through the LED lamp and compare it with a reference. The output PWM signals drives the internal power MOSFET, which regulate the current through the LED lamp accordingly. The device will automatically adjust the output voltage of the LED Lamp to maintain a constant current flow.

The AL9910AEV2 Evaluation Board - LED Driver has a wide range of features, including adjustable output current, adjustable brightness, and over-temperature and over-current protection. As mentioned earlier, the device also includes an internal current sense resistor. This allows for precise regulation of the lighting intensity regardless of variations in voltage or temperature. The main advantage of using a current sense resistor is that it allows the device to operate at a very high power efficiency.

Conclusion:

The AL9910AEV2 Evaluation Board - LED Driver is one of the most advanced Evaluation Boards - LED Drivers in the market. It has a wide range of features and is suitable for a variety of applications in different environments. Its constant current regulation method ensures uniform brightness and excellent light quality. Additionally, it offers a high power density and efficiency, making it an ideal solution for applications that require precise regulation of the light intensity.

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