TLC5920DL

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The TLC5920DL is a LED driver integrated circuit (IC) designed for driving LED displays up to 32 channels. It is specifically designed and optimized for LED lighting applications and can be used in a wide variety of LED configurations and applications, such as LED lighting, architectural lighting, digital signage, and so on, with a variety of advantages over other types of LED drivers. This article will provide an overview of the application field and working principle of the TLC5920DL.

Application Field

The TLC5920DL is suitable for use in any small or medium-scale application that requires high power LED lighting with excellent energy efficiency and long life. In particular, it is commonly used for illuminated signs and displays, signage, general indoor and outdoor lighting, flexible street lighting systems, and in automotive lighting. In addition to its use in lighting, the TLC5920DL can also be used in a variety of other applications including medical, industrial and instrumentation.

The TLC5920DL is a highly versatile LED driver because of its low power consumption, high efficiency, and wide input voltage range. Its built-in dimming features allow it to be used in applications that require variable intensity with precise control. It also provides a low noise operation and can be used in applications that require high safety levels. The TLC5920DL is compatible with different types of LEDs and connectors, making it suitable for a wide range of applications.

Working Principle

The working principle of the TLC5920DL is quite simple. It is a half-bridge driver that works in two phases. In the first phase, the Low-Side MOSFET (LST) is turned on which allows the voltage at the LED cathode to increase until it matches the input voltage. In the second phase, the High-Side MOSFET (HST) is turned on which allows the LED to be driven with the current through the LED anode which is determined by the external resistors. This type of driver ensures that the current through the LED is accurate and stable even when the voltage fluctuates.

The TLC5920DL features an onboard temperature sensor and three-level protection mechanism to ensure safe and reliable operation. This is done by saving energy in the beginning stages and then releasing it as the temperature of the IC rises, allowing for a smooth transition when the temperature is reduced or increased. It also includes a built-in current control circuit which can maintain the maximum output current at a predetermined level to protect the connected hardware from over voltage or current.

The TLC5920DL also provides a variety of advanced features such as programmable frequency, adjustable PWM dimming ratio, and fault protection. Its integrated low-noise frequency spread spectrum makes it suitable for noisy environments such as hospitals, airports, or even home uses. The TLC5920DL is also compliant with CE, RoHS, and FCC standards.

The TLC5920DL LED driver is a highly capable LED driver that offers excellent performance and is suitable for a variety of applications. Its wide range of features make it an ideal choice for applications requiring precise control, excellent energy efficiency and long lifespan. Its compatibility with different LEDs and connectors also make it very suitable for a wide range of lighting applications.

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