软件
固件
TIDA-01415
100W、高分辨率、16 位颜色可调、0.15% 可调光 RGBW LED 灯具参考设计
TIDA-01415
概述
This reference design demonstrates the finest range of color control of individual RGBW LED strings with > 16 bits of PWM resolution while supporting the PWM modulation frequencies as high as 30 and 50 kHz. This reference design demonstrates the finest range of individual RGBW LED strings color control and enables development of highly efficient DC-DC LED luminaires capable of wide color gamut generation with trillions of colors while at the same time being imperceptible to high-end cameras and video broadcast equipment.
特性
- Four buck current controllers driving RGBW LED strings at 30V and string current of up to 0.75A (also tested up to 1.25A)
- LED buck current controllers efficiency exceeding 96% at full load with maximum operating frequency up-to 600 kHz
- 100% to 0.2% Contrast setting for PWM dimming method at 30 and 50 kHz
- 100% to 0.15% Contrast setting and better Linearity for Shunt dimming mode at 30 and 50 kHz
- High-resolution PWM feature of C2000™ with 180-ps step enables current adjustment with resolution > 16 bits for both PWM and Shunt FET methods even at 50kHz dimming frequency
- 4Ch, 12bit DAC used for IADJ setting of individual LED strings to enable analog dimming
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产品
在设计中包括 TI 产品和可能的替代产品。
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| 类型 | 标题 | 下载最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| 设计指南 | 100W、高分辨率、16 位颜色可调、0.15% 可调光RGBW LED 驱动器参考设计 | 英语版 | 2017年 10月 24日 |