60V DC/DC LED drivers feature adjustable over-temperature protection

Infineon Technologies has introduced two new 60V DC/DC LED drivers featuring adjustable over-temperature protection that protects light elements from damage through overheating. ILD6070/ILD6150 drivers operate from a input voltage range of 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 contract ratio as high as 3000:1.

These drivers enable 18 LEDs in a light string, compared to a maximum of 12 LEDs in typically available 40V devices.

“As the lighting industry’s transition to LED-based luminaires accelerates, with growth rates forecast at 30 percent across the next several years, manufacturers need to simultaneously innovate in engineering design while doing everything possible to gain competitive advantage in performance and cost,” said Dr. Christian Burrer, Head of Product Segment AC/DC and Lighting ICs at Infineon Technologies. “At Infineon, our goal is to provide a single point of supply for optimized and highly efficient power conversion and control elements of lighting system designs.”

The new drivers operate up to 1 MHz switching frequency, resulting in reduction of size and cost of LED lamp.

The features includes:

Typical DC/DC conversion efficiency up to 98 percent.

Current accuracy of 3 percent across the full 4.5V to 60V input range.

The 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.

Availability, Package, Pricing: 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.