60V LED Drivers Ensure Constant Output

Infineon Technologies AG introduced two new 60V DC/DC LED drivers that offer excellent power conversion efficiency, benchmark current accuracy that helps assure constant light output, and first-in-the-industry adjustable over-temperature protection that protects light elements from damage through overheating.

April 22, 2013

3 min read

Two 60V DC/DC LED drivers from Infineon Technologies AG offer excellent power conversion efficiency, benchmark current accuracy that helps assure constant light output, and first-in-the-industry adjustable over-temperature protection that protects light elements from damage through overheating. The new ILD6070/ILD6150 drivers give lighting manufacturers the flexibility to produce multiple products using the same drivers, based on wide input voltage range (4.5 V to 60V), adjustable output current of up to either 0.7 A or 1.5 A, and support of digital or analog dimming inputs with a maximum dimming contrast ratio as high as 3000:1.

With the addition of 60V devices to its portfolio, Infineon enables manufacturers to support as many as 18 LEDs in a light string, compared to a maximum of 12 LEDs in typically available 40V devices. This helps manufacturers to lower costs or achieve higher lumens in a lighting system.

The new drivers extend Infineon's portfolio of switched-mode, buck (step-down) topology LED drivers for low voltage driven lighting applications, including indoor and outdoor systems in residential, commercial and industrial environments. They operate at up to 1 MHz switching frequency, which reduces manufactured cost and PCB space by reducing the size of external components needed in a design. Reduced size is also supported by the high efficiency and corresponding improved thermal performance of the drivers.

Features:

· Typical DC/DC conversion efficiency up to 98 percent, which improves overall efficiency of a luminaire and reduces thermal load.

· Current accuracy of 3 percent across the full 4.5V to 60V input range, which contributes to exceptional stability of light output.

· Adjustable over temperature protection feature, which reduces light output when a threshold temperature is reached instead of turning off the light. With this feature, an LED light will always operate in a non-critical thermal range which leads to significantly longer lifetime.

Samples of the ILD6070/ILD6150 drivers will be available in March, at a cost of USD 1.50 and USD 1.80, respectively. High volume pricing, above 10k quantity, of the DSO-8 packaged devices is approximately USD 0.80.