DLPU113A December   2021  – April 2022 DLP2021-Q1

 

  1.   Trademarks
  2. 1DLP2021-Q1 Electronics EVM Overview
    1. 1.1 Introduction
    2. 1.2 What is in the DLP2021-Q1 Light Engine EVM
      1. 1.2.1 Formatter Subsystem
      2. 1.2.2 Illumination Subsystem
      3. 1.2.3 Light Engine
      4. 1.2.4 Cables
    3. 1.3 Non-Optical Specifications
      1. 1.3.1 Electrical Specifications
      2. 1.3.2 Component Temperature Ratings
      3. 1.3.3 LED Driver Design
      4. 1.3.4 Video Specification
  3. 2Quick Start
    1. 2.1 Kit Assembly Instructions
    2. 2.2 Software Installation
    3. 2.3 Power-Up
    4. 2.4 Select Display Content
    5. 2.5 LED Driver
  4. 3Optics and Mechanics
  5. 4Software
    1. 4.1 DLP Composer
      1. 4.1.1 Default Register Configuration
      2. 4.1.2 Illumination
      3. 4.1.3 Sequence Set
      4. 4.1.4 Degamma Curves
      5. 4.1.5 Image/Video
      6. 4.1.6 Flash Blocks
      7. 4.1.7 Flash Programming
    2. 4.2 DLP Control Program
      1. 4.2.1 Connection
      2. 4.2.2 Scripting
      3. 4.2.3 Registers
      4. 4.2.4 Commands
    3. 4.3 MSP430 Example Code
  6. 5Revision History

1.3.3 LED Driver Design

The DLP2021-Q1 chipset, used with LED illumination, includes illumination modulation based on the LM3904-Q1 P-FET buck controller for high-power LEDs. This illumination modulation turns off the light output during micromirror reset, which improves system contrast. For the system timing specifications of the DLP2021LEQ1EVM, see Figure 1-7.

GUID-C68E3161-79FF-482A-85D0-1AD1E8F04110-low.png Figure 1-7 LED Driver Timing Specifications

The timing specifications are shown in Table 1-5.

Table 1-5 LED Driver Timing Specifications
PARAMETER VALUE

Tr1, Tf2

< 50 μs

Tf1, Tr2

< 2 μs

Tw

minimum = 1 μs