Power factor over 0.9 for constant voltage flyback LED driver

March 28, 2019 //By Julien Happich
Power factor over 0.9 for constant voltage flyback LED driver
The digital and highly integrated XDPL8218 LED driver IC from Infineon features a future proof design and combines a constant voltage quasi-resonant flyback controller with algorithms for high power factor (> 0.9) and low total harmonic distortion (THD < 15 percent).

The XDPL8218 is designed for the primary side of dual-stage LED designs with a DC-DC stage at the secondary. The device manages wide load ranges, responds quickly and stably to dynamic load changes, and enables high efficiency over a wide output range.

The chip supports full functionality for both AC and DC input in the nominal input voltage range of 100V AC to 277V AC or 127V DC to 430V DC. The built-in digital control automatically selects the optimal operation mode for the actual operating condition, e.g. quasi-resonant, discontinuous conduction or active burst modes. Digital parameter configuration enables real-time design changes with little effort shortening design cycles and reducing time-to-market. The compact BOM minimizes system costs and allows for increased flexibility. The IC comes with a comprehensive and configurable set of protection features to ensure high reliability and long lifespan of the driver.

Infineon - www.infineon.com


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