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Infineon saves energy with digitised LED control

24 Sep 2015

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Five kilowatt hour of electricity is consumed for every light switched on in a room. While LED technology helps reduce such unnecessary consumption, in Germany alone, there are still about 13 million tons of carbon dioxide being emitted and $500.6 million of energy costs that needs reduction. To address this problem, Infineon Technologies has developed the .dp digital power 2.0 platform, which allows control of LED lighting systems and brings energy savings to end users.

The decisive dive into the digital world is made possible by the ICL8105 and ILD2111 controllers and special software that enables the manufacturers to configure parameters according to their requirements.

The ICL8105 is a configurable flyback controller with Power Factor Correction (PFC) for constant power LED drivers from 10W to 80W. With only a few external components required, producing it cuts up to 10 per cent the cost of a conventional controller. The ICL8105 boasts algorithms that support multiple operating modes and a power factor correction with low distortion. The controller has an input for 0V to 10V dimming, reducing need for an oscillator including power supply. An active burst mode extends a dimming range which prevents flickering or shimmering and produces high quality of light. To protect the LED driver in case of over-temperature, the ICL8105 automatically reduces the output current in case of overload.


The ILD2111 is a configurable buck controller designed as a constant current source with 10W to 150W output current control (backlash) for LED drivers. Thus, the regulator addresses diverse commercial LED applications. The ILD2111, too, requires only a few external components. The output current can be set easily and accurately by a resistor, and is also compatible with the LEDset interface.

The IC delivers flicker-free PWM dimming down to one per cent. The component automatically selects an operating window in order to regulate different loads, depending on the switching frequency and the ripple of the output current. It has an output voltage of 15VDC to 55VDC. Extensive, user-configurable features protect the component at under-voltage and over-voltage, short circuits, over-current or high temperatures.

Both the ICL8105 and the ILD2111 are available as samples and can be ordered in high volume. Development boards, the .dp Interface Board and the .dp Vision GUI software are offered for both controllers.

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