iW7028

10通道LED驱动器控制器，每通道无限LED电压

The iW7028 is a 10-channel LED backlight driver that enhances TV picture quality and reduces BOM cost for 2D and 3D LCD TVs. It uses external LED current sinks and up to two external DC/DC converters (boost, buck, LLC, etc.) for the LED driver to enable easy current and voltage scaling. By integrating Dialog’s patented BroadLED™ technology, enabling a unique 2-pin LED open/short sensing technology to protect the external current sinks, the iW7028 eliminates the need for high voltage sensing components and reduces the required pin count resulting in a smaller, lower-cost package. The BroadLED technology also enables the use of loosely binned LED arrays, further reducing the total BOM cost.

对话’s patented AnyMode™ dimming offers comprehensive, simple and flexible options to improve LED TV picture quality. It allows continuous PWM signals or burst PWM 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. A built-in PLL (phase-locked loop) further ensures jitter-free operation even with a noisy VSYNC signal.

10通道LED驱动器控制器，每通道无限LED电压

Patented BroadLED™ adaptive switch mode technology for high current matching at maximum efficiency

• Enables patented 2-pin external LED open/short protection circuit
• Enables use of cheaper, loosely binned LED arrays for lower BOM cost

年代OP-32 Package – reduced pin count and cost

柔性输入电源电压额定值：5V / 9V-16V

AnyMode™ comprehensive dimming control improves picture quality

• 高频PWM调光高达4kHz
• 年代canning-mode PWM dimming
• 可配置的相移调光
• 8-bit analog dimming
• 12-bit PWM dimming
• Hybrid dimming (analog and PWM)

PWM dimming range: 0% to 99.9%

年代calable LED current

支持2D和3D LCD电视模式

支持图案延迟器（PR）和快门玻璃（SG）3D技术

全面保护功能：

• Individual LED short protection
• Channel-to-channel short protection
• Current sink MOSFET drain-to-source short protection
• 电流检测电阻短路保护
• Microcontroller interrupt interface
• LED open-fault detection
• 过温保护

Digitally controlled scanning mode

External LED current sink MOSFETs for maximum flexibility

SPI Daisy-Chain接口在支持16个以上的LED字符串时简化了设计

Internal PLL ensures jitter-free operation even with noisy VSYNC signal

减少了BOM成本

• 数字控制引擎消除了MCU的需求
• 2-pin sensing removes need for external high voltage sensing components
• 5V/9V-16V input supply voltage eliminates need for separate voltage rail

Direct and Edge-Lit LED TVs