Infineon Technologies has launched the second-generation ICL5102 resonant controller IC, designed for power supplies and lighting drivers. It is an efficient and cost-effective controller IC solution that enables optimized LED lighting solutions. Key applications include LED drivers for professional lighting, industrial lighting, and streetlights. This controller IC can also be used in offline AC-DC power supplies and LCD TVs.

The ICL5102 integrates a PFC and a half-bridge (HB) controller into a single DSO-16 package. It also supports a general-purpose input voltage range of 70VAC to 325VAC and provides a wide output range. Only a small number of external components are required to configure and support the controller IC, and all parameters are set using resistors.

The ICL5012 supports fast startup within 500ms at less than 100μA. PFC is over 99%, and Total Harmonic Distortion (THD) is less than 3.5%. The controller provides up to 94% efficiency through a resonant topology. Active burst mode for low standby current consumes less than 300mW, and the enable/disable function supports dimming.

The PFC controller provides brownout detection, adjustable THD for light-load operation, and high power factor correction. With high-accuracy BUS voltage sensing, only four pins are required for PFC operation. The resonant HB controller features a fully integrated 650V high-side driver utilizing an internal coreless transformer, with an adaptive dead time between 250ns and 750ns and an operating frequency of up to 500kHz. The device can detect overload, short circuits, BUS, HB, or output undervoltage and overvoltage, and overheating. An integrated capacitive mode regulator prevents operation in capacitive mode. All protection functions utilize an automatic restart (latch-free) feature.

Infineon is currently offering engineering samples and the reference design REF-ICL5102-U130W-CC. Mass production supply began in the second quarter of 2018. Further details can be found at http://www.infineon.com/icl5102.