JAJSFO6F December   2015  – April 2019 TPS99000-Q1

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     標準的なスタンドアロン・システム
  4. 4 改訂履歴
  5. 5 概要（続き）
  6. 6 Pin Configuration and Functions
    1.     Pin Functions - Initialization, Clock, and Diagnostics
    2.     Pin Functions - Power and Ground
    3.     Pin Functions - Power Supply Management
    4.     Pin Functions - Illumination Control
    5.     Pin Functions - Serial Peripheral Interfaces
    6.     Pin Functions - Analog to Digital Converter
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics - Transimpedance Amplifier Parameters
    6. 7.6  Electrical Characteristics - Digital to Analog Converters
    7. 7.7  Electrical Characteristics - Analog to Digital Converter
    8. 7.8  Electrical Characteristics - FET Gate Drivers
    9. 7.9  Electrical Characteristics - Photo Comparator
    10. 7.10 Electrical Characteristics - Voltage Regulators
    11. 7.11 Electrical Characteristics - Temperature and Voltage Monitors
    12. 7.12 Electrical Characteristics - Current Consumption
    13. 7.13 Power-Up Timing Requirements
    14. 7.14 Power-Down Timing Requirements
    15. 7.15 Timing Requirements - Sequencer Clock
    16. 7.16 Timing Requirements - Host / Diagnostic Port SPI Interface
    17. 7.17 Timing Requirements - ADC Interface
    18. 7.18 Switching Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Illumination Control
        1. 8.3.1.1 Illumination System High Dynamic Range Dimming Overview
        2. 8.3.1.2 Illumination Control Loop
        3. 8.3.1.3 Continuous Mode Operation
          1. 8.3.1.3.1 Output Capacitance in Continuous Mode
          2. 8.3.1.3.2 Continuous Mode Driver Distortion and Blanking Current
          3. 8.3.1.3.3 Continuous Mode S_EN2 Dissipative Load Shunt Options
          4. 8.3.1.3.4 Continuous Mode Constant OFF Time
          5. 8.3.1.3.5 Continuous Mode Current Limit
        4. 8.3.1.4 Discontinuous Mode Operation
          1. 8.3.1.4.1 Discontinuous Mode Pulse Width Limit
          2. 8.3.1.4.2 COMPOUT_LOW Timer in Discontinuous Operation
          3. 8.3.1.4.3 Dimming Within Discontinuous Operation Range
          4. 8.3.1.4.4 Multiple Pulse Heights to Increase Bit Depth
          5. 8.3.1.4.5 TIA Gain Adjustment
          6. 8.3.1.4.6 Current Limit in Discontinuous Mode
          7. 8.3.1.4.7 CMODE Big Cap Mode in Discontinuous Operation
      2. 8.3.2 Over-Brightness Detection
        1. 8.3.2.1 Photo Feedback Monitor BIST
        2. 8.3.2.2 Excessive Brightness BIST
      3. 8.3.3 Analog to Digital Converter
        1. 8.3.3.1 Analog to Digital Converter Input Table
      4. 8.3.4 Power Sequencing and Monitoring
        1. 8.3.4.1 Power Monitoring
      5. 8.3.5 DMD Mirror Voltage Regulator
      6. 8.3.6 Low Dropout Regulators
      7. 8.3.7 System Monitoring Features
        1. 8.3.7.1 Windowed Watchdog Circuits
        2. 8.3.7.2 Die Temperature Monitors
        3. 8.3.7.3 External Clock Ratio Monitor
      8. 8.3.8 Communication Ports
        1. 8.3.8.1 Serial Peripheral Interface (SPI)
    4. 8.4 Device Functional Modes
      1. 8.4.1 OFF
      2. 8.4.2 STANDBY
      3. 8.4.3 POWERING_DMD
      4. 8.4.4 DISPLAY_RDY
      5. 8.4.5 DISPLAY_ON
      6. 8.4.6 PARKING
      7. 8.4.7 SHUTDOWN
    5. 8.5 Register Maps
      1. 8.5.1 System Status Registers
      2. 8.5.2 ADC Control
      3. 8.5.3 General Fault Status
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 HUD
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Application Design Considerations
          1. 9.2.1.2.1 Photodiode Considerations
          2. 9.2.1.2.2 LED Current Measurement
          3. 9.2.1.2.3 Setting the Current Limit
          4. 9.2.1.2.4 Input Voltage Variation Impact
          5. 9.2.1.2.5 Discontinuous Mode Photo Feedback Considerations
          6. 9.2.1.2.6 Transimpedance Amplifiers (TIAs, Usage, Offset, Dark Current, Ranges, RGB Trim)
      2. 9.2.2 Headlight
        1. 9.2.2.1 Design Requirements
  10. 10Power Supply Recommendations
    1. 10.1 TPS99000-Q1 Power Supply Architecture
    2. 10.2 TPS99000-Q1 Power Outputs
    3. 10.3 Power Supply Architecture
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Power/High Current Signals
      2. 11.1.2 Sensitive Analog Signals
      3. 11.1.3 High Speed Digital Signals
      4. 11.1.4 High Power Current Loops
      5. 11.1.5 Kelvin Sensing Connections
      6. 11.1.6 Ground Separation
  12. 12デバイスおよびドキュメントのサポート
    1. 12.1 デバイス・サポート
      1. 12.1.1 デベロッパー・ネットワークの製品に関する免責事項
    2. 12.2 商標
    3. 12.3 静電気放電に関する注意事項
    4. 12.4 Glossary
  13. 13メカニカル、パッケージ、および注文情報
    1. 13.1 Package Option Addendum
      1. 13.1.1 Tape and Reel Information
      2. 13.1.2 Mechanical Drawings

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

10.3 Power Supply Architecture

The power supply architecture depends on the amount of power required for the illumination source. For HUD applications which require precise color and white point control, it is highly recommended to pre-regulate the illumination power supply, as voltage variations can cause variations in the LED output. For non-color critical applications, the designer may choose to completely isolate the illumination driver. In addition, if 2 or more LEDs are driven in series, then the pre-regulated voltage must be higher than the voltage of the LEDs. The different architectures are shown below.

Note that the architectures make use of the LM25118 as a pre-regulator. This part uses a buck-boost architecture which allows it to supply the required 6.5 V with a battery voltage input of 6 V to 18 V. If the battery input can be assured to be above the 6.5 V output voltage, then a buck architecture can be used instead, resulting in BOM savings.

TPS99000-Q1 psu_arch1.gifFigure 48. Architecture Number 1: HUD Application with LED Forward Voltage Less Than 5 V

In this application, the same pre-regulator is used to power the 6.5 V rail as well as the LM3409. Since the LM3409 input voltage must be kept above 6 V, the pre-regulator is set to 6.5 V.

TPS99000-Q1 psu_arch2.gifFigure 49. Architecture Number 2: HUD Application with Two LEDs in Series Configuration

In this application, the pre-regulator must be designed to operate at a higher output voltage in order to drive 2 LEDs in series. Because the TPS99000-Q1 requires a VIN from 5.5 V to 7 V, a small buck regulator is used to generate a 6 V power rail.

TPS99000-Q1 psu_arch3.gifFigure 50. Architecture Number 3: Headlight Application with Independent Illumination

In this application, the power used to drive the illumination is separate from the TPS99000-Q1. This is possible in applications where the illumination driver can be very simple. Although the LM25118 is shown here, a different regulator would likely be selected in this application because the maximum current requirements are much less with the illumination power path removed.