The highly integrated ICL5101 enables the design of advanced LED drivers using approximately 25 percent fewer components compared to other solutions that require separate PFC and resonant ICs. This allows for a more reliable design with a smaller form factor, reduced PCB layout complexity, and lower costs. The ICL5101 integrates a half-bridge and a PFC gate driver. Since all operating parameters of the ICL5101 can be adjusted simply using resistors, parameter settings can be configured reliably and stably at a low cost. Furthermore, it supports an extended junction temperature range of -40°C to +125°C, making it suitable for outdoor use.

The ICL5101 LED controller is designed to control resonant converter topologies such as LLC. The integrated digital PFC stage operates in both CrCM (critical conduction mode) and DCM (discontinuous conduction mode), enabling extremely stable regulation under light load conditions, such as during dimming. Additionally, LED lighting can be dimmed over a very wide range, from 100% to 0.1% of the nominal load. Modern advanced dimming typically ranges from 100% to 5%. Furthermore, the ICL5101 can turn on the lights very quickly within 200ms under any conditions.

The ICL5101's adjustable PFC stage delivers high power quality by achieving a low THD (Total Harmonic Distortion) of less than 10 percent and a high power factor of over 0.99 across a wide line input voltage range. This enables lighting manufacturers to easily meet energy efficiency standards. Furthermore, the ICL5101 provides extremely stable output against line voltage fluctuations. It also enhances system stability by integrating comprehensive protection features, such as external overheating protection and capacitive load protection, to detect fault conditions.

With the launch of the ICL5101, Infineon has once again demonstrated its technological superiority in high-efficiency driver solutions. Recently, the ILD6150 step-down driver IC was selected as a finalist for the “ICs and Electronic Devices” category of the 2015 LEDs Magazine Sapphire Awards. Further information on Infineon’s energy-efficient semiconductor solutions for lighting applications is available at http://www.infineon.com/lighting.

supply

The ICL5101 resonant controller IC is available in a small PG-DSO-16 package, and an ICL5101 evaluation board is also available. This board provides a stable output voltage of 54VDC with a wide input voltage range of 85–305VAC. It supports 110W of output power and can be easily configured simply by setting resistors. More details about this product can be found at www.infineon.com/ICL5101.