Components

Digital LED Driver Operates from AC or DC and Dims Below 1%

Infineon Technologies AG introduced the new member of its XDP™ LED driver series, the XDPL8221 a cost-effective dual-stage driver with advanced features. This driver combines a communication interface with quasi-resonant PFC and a quasi-resonant flyback controller. A comprehensive set of configurable protection mechanisms (standard and sophisticated) ensure safe, reliable, and robust LED driver for a large set of use cases. Infineon will showcase the new driver IC at the APEC 2019 exhibition in Anaheim, CA

Typical applications for the LED driver include its use for flicker-free and dimmable indoor or outdoor lighting applications, multi-mode connected lighting, or its use as a wired or wireless connected LED driver.

The XDPL8221 features advanced functions such as multi-control with constant voltage, constant current and limited power as configurable operating parameters. The result is a versatile, high-performance LED driver. Infineon asserts that the performance of the XDPL8221 LED driver helps engineers design more efficient devices.

This driver IC offers full functionality for both ac and dc input in the nominal input voltage range of 100Vac to 277Vac or 127Vdc to 430Vdc. The built-in digital control selects the best mode of operation depending on the actual situation. It can switch between quasi-resonant, discontinuous conduction, or active burst modes.

XDPL8221’s UART interface with a command set enables control of the device’s functions and provides status information. The status information from the interface enables numerically exchanged real-time data. This data can be utilized for monitoring or additional local control functions.

Flicker-free dimming below 1% is possible with the driver IC while the current is still regulated with a high accuracy. The chip also has a dim-to-off function to keep the device in standby when the light is off with a low standby power (less than 100mW, depending on the driver design).

Improved flexibility and reduced bill of materials (BOM) from the driver reduce overall system cost.

The XDPL8221 comes in a DSO-16 package, and with wide tool support, Infineon says it is easy to integrate. According to Infineon, this tool support accelerates the design cycle and shortens time-to-market.

Features
  • Supports ac and dc input
  • Nominal input voltage range 100Vac to 277Vac or 127Vdc to 430Vdc
  • Reference board efficiency>90%
  • Power factor>0.9 and THD<15% over wide load range
  • UART interface and command set
  • Standby power<100mW
  • Temperature guard with adaptive thermal management with internal and/or external sensor
  • Digital control selects automatically best mode of operation, depending on actual requirements
    • QRM (quasi-resonant mode)
    • DCM (discontinuous conduction mode)
    • ABM (active burst mode)
  • Tunable, digital parameters
  • Configurable brown-out and brown-in protections
  • Relevant error conditions are monitored and protected
    • Under-voltage
    • Over-voltage
    • Open load
    • Output shorted
Benefits
  • The XDPL8221 enables the design of high performance and innovative advanced LED driver for connected lighting with small effort
  • Reduced BoM minimizes system cost and increases flexibility
  • High-reliability features improve the long lifetime of the driver
  • Fast design cycle reduces time to market and efforts for value products
  • Supply chain efficiency optimizes stock keeping and enables high flexibility
  • Real-time operating parameters digitally available by UART interface
  • Dimming control numerically precise through UART commands
Availability

The new XDPL8221 is now available.

Infineon asks that those who attend APEC 2019 Exhibition & Conference in Anaheim, CA, March 17-21 to visit the company’s booth #711.

Infineon Technologies AG
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