iW7038

iW7038

High Precision, 16-Channel LED Backlighting Driver with Integrated Current Sinks for High Dynamic Range (HDR) LCD Displays

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宽容™技术可提高高环境温度应用的热性能雷竞技安卓下载

The iW7038 LED driver for LCD backlighting integrates 16 precision current sinks with advanced digital control technology to improve brightness control in High Dynamic Range (HDR) displays. The digital control block uses Dialog’s BroadLED™ adaptive switch technology, improving thermal performance by optimizing the voltage drop across each LED string, while enabling precision matching with unbinned LEDs.

The iW7038 also uses Dialog’s patented AnyMode™ dimming, which offers comprehensive, simple and flexible options to improve HDR display picture quality. It allows continuous PWM signals or very narrow PWM burst signals that are fully synchronized to the video frame at the same or higher frequency. The PWM duty cycle can be updated in each video frame and with user-configurable tail or head delays. This provides more options to reduce motion blur and improve the contrast ratio.

随机调光还有助于通过产生高强度,短持续时间PWM脉冲来减少人类视觉系统(HV)引起的运动模糊。这导致淡出更快的淡出并降低了HV的生理余消效果,对于汽车仪表板显示很重要。

特征

  • 16-channel LED driver with internal MOSFET current sinks
  • 55V maximum output voltage per channel
  • Patented BroadLED™ adaptive switch mode technology for high current matching at maximum efficiency
    • 降低功耗要求
    • 允许使用更便宜,松散的LED阵列,以降低BOM成本
  • Flexible input supply voltage rating: 12V (9V-16V)
  • AnyMode™ comprehensive dimming control improves picture quality
    • 13位PWM调光或11位全球调光,以提高对比度
    • 头部,尾部,中心模式PWM对齐减少运动模糊
    • 9-bit independent analog dimming
    • PWM dimming range: 0% to 99.9%
    • 可编程转换速率 - 更好的EMI控制

特征

  • 全面保护功能:
    • 个人LED短路保护
    • 通道到通道短路保护
    • 电流水槽MOSFET漏极源短路保护
    • Current sense resistor short protection
    • Microcontroller interrupt interface
    • LED open-fault detection
    • 过热保护
  • External current sense resistors – maximum flexibility for current requirements
    • 每个通道的200mA最大;支持2通道分组
  • SPI daisy-chain interface simplifies design when supporting more than 16 LED strings
  • 3个LED驱动器中的SPI通信保护模式
  • 即使使用嘈杂的VSYNC信号,内部PLL也可以确保无抖动操作

雷竞技安卓下载

  • LCD Backlighting for HDR LCD TV, Monitor and Notebook Displays
  • 汽车显示器

Block Diagrams

典型的应用程序图雷竞技安卓下载
Functional Block Diagram

Resources

产品简介和摘要
Date
iW7038 Product Summary 14/05/2018 Rev. 1.0.

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