comment on this article

Digital high power factor XDP controller

Infineon Technologies has introduced the XDP digital power controller - the XDPL8219.

The high-performance flyback controller features secondary-side regulation for high-performance and robust LED designs. It provides high power factor and constant voltage output. The device operates in quasi-resonant mode (QRM) to maximize the efficiency and minimise the electromagnetic interference (EMI) over a wide load range. It accommodates active burst mode (ABM) at light load to prevent audible noise while achieving a no-load standby power level below 100 mW.

The XDPL8219 detects the input voltage type (AC or constant DC) and adjusts its proprietary voltage-mode pulse modulator accordingly for enhanced system performance. For AC input, it alters the pulse modulation for achieving a high power factor (>0.9) as well as low total harmonic distortion (<10%) over a wide input and load range. For a constant DC input, adapting pulse modulation results in an adjusted switching frequency hence reducing EMI over the entire operating range.

The device provides maximum design flexibility and performance optimization through parameter configuration via a universal asynchronous receiver transmitter (UART) pin. Furthermore, the XDPL8219 optionally transmits UART signals to inform about input voltage, line frequency, controller temperature, last error code, and input voltage loss indication amongst others. Infineon provides programming tools, which include a user-friendly graphic user interface to configure the controller. This increased flexibility together with reduced bill-of-materials shortens time-to-market.

Author
Neil Tyler

Comment on this article


This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team.

What you think about this article:


Add your comments

Name
 
Email
 
Comments
 

Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles