PLDS100-D-277A

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With the rapid development of the LED industry, LED drivers have become an indispensable tool for controlling light sources. They can be divided into power supply, dimming, high speed, and embedded systems, and they have a wide range of applications. Today we’ll be looking at the PLDS100-D-277A application field and working principle.

PLDS100-D-277A Application Field

In the field of LED drivers, the PLDS100-D-277A is one of the best products in the market. It is suitable for driving Infrared LEDs, RGB LEDs and white LEDs. It offers adjustable output current from 0mA to 300mA, with an output voltage range of 6V to 28V. It has a dimming control range of 10% to 100%, and it can be used to drive 3 LEDs or more in series in the voltage range of 6V to 20V. It also supports PWM dimming, with PWM frequencies of up to 200Hz. It can be used in a variety of applications, including traffic lights, automotive lighting, LED screens, LED decorations and more.

PLDS100-D-277A Working Principle

The PLDS100-D-277A is based on a boost converter topology. The AC input is rectified and filtered with an EMI filter, and the output voltage is then regulated by the boost converter. The output voltage is constantly adjusted to maintain a constant current output. The adjustable output current is set by an on board ADC 0-300mA set current and recorded in non-volatile memory. The dimming is realized by a PWM signal, which is applied to the PWM pin of the converter. When the PWM signal is low, the output voltage is reduced, and when the PWM signal is high, the output voltage is increased. Therefore, by varying the duty cycle of the PWM signal, the output current can be adjusted.

The PLDS100-D-277A is also equipped with an external monitor and protection pin, which can be used to measure the output voltage and monitor the temperature of the LED. This allows the converter to protect itself from overload or over temperature conditions. It is also equipped with short circuit, over voltage and over temperature protection.

Conclusion

The PLDS100-D-277A is a great example of an advanced LED driver. It offers high efficiency, adjustable current, dimming control and multiple protection functions, making it ideal for a wide range of applications. It is reliable, easy to use and cost effective.

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