XDPL8221

Overview

Digital high power factor XDP™ controller for advanced, dual stage LED drivers with constant voltage primary-side regulation

The XDPL8221 connects a digital quasi-resonant PFC XDP™ control stage and a quasi-resonant flyback controller with primary-side regulation. A serial communication interface supports direct communication with an external microcontroller unit (MCU). The XDPL8221 digital control IC is especially designed for advanced LED drivers in smart lighting or Internet of Things (IoT) applications. The built-in algorithms of the dual stage topology ensures flicker-free operation and dimming down to 1% of nominal current.

Summary of Features

  • Supports AC and DC input
  • Nominal input voltage range 100VAC – 277VAC or 127VDC – 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
    • Undervoltage
    • Overvoltage
    • 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 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

Potential Applications

  • Flicker-free LED driver for indoor or outdoor applications
  • Multi-mode LED driver for connected lighting
  • Wired or wireless connected LED driver
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