DLPU066A March   2018  – April 2022

 

  1. 1Calibration Purpose
    1. 1.1 Calibration Purpose
    2. 1.2 Goal of Calibration
  2. 2Calibration Software and Tools
    1. 2.1 Calibration Software and Tools
  3. 3Calibration Setup
    1. 3.1 Calibration Setup
  4. 4Calibration Overview and Theory
    1. 4.1 Goal of Calibration
    2. 4.2 Calibration Background
      1. 4.2.1 Calibration File Parameters
      2. 4.2.2 Coarse Adjustment Parameter Combinations
    3. 4.3 Calibration Process
      1. 4.3.1 Calibration Pre-work: Coarse Combination Determination
      2. 4.3.2 Temperature Charaterization
      3. 4.3.3 Production PGU Calibration
  5. 5Calibration Pre-work
    1. 5.1 Pre-work Overview
    2. 5.2 Coarse Combination Determination
    3. 5.3 Strategically Adjusting Coarse Combination Parameters
      1. 5.3.1 LDC Index
      2. 5.3.2 Optical Sensor Feedback Gain
      3. 5.3.3 Current Limit
    4. 5.4 Coarse Combination Strategies
  6. 6Calibration Procedure
    1. 6.1 Calibration Procedure Overview
    2. 6.2 Calibration Sweep Setup and Coarse Combinations
    3. 6.3 Temperature Characterization
    4. 6.4 Production PGU Calibration
    5. 6.5 Generating a Calibration File
  7. 7Revision History

2.1 Calibration Software and Tools

Table 2-1 Software and Tools
Software/ToolDescriptionReference Material/Lit Number
Embedded MCU Reference Design Software
  • Maintains color point and smooth dimming using a calibration file that is stored on the C2000 Piccolo MCU
  • Details about this file are provided in Section 3
  • Additional details about Piccolo Software and dimming can be found in the Piccolo Software Programmer's Guide for the DLPC120 ASIC
  • Designed to work with a discrete LED driver solution circuit
ACP Users Guide, Piccolo Reference Code, Piccolo Programmer's Guide, LED Driver App Note in Reference Documents
Automotive Control Program (ACP)
  • Runs on a Windows PC, serves as the host controller for the Piccolo MCU
  • Includes a calibration process that can be used to generate the calibration file
  • Includes control functionality for testing and modifying system brightness and color point
ACP User's Guide
Konica Minolta CA-210 or CA-310
  • Color analyzer used to measure color point and brightness output
  • Required for calibration
ACP User's Guide