DLPS133B June   2019  – July 2024 TPS99001-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Electrical Characteristics—Analog to Digital Converter
    6. 5.6  Electrical Characteristics—Voltage Regulators
    7. 5.7  Electrical Characteristics—Temperature and Voltage Monitors
    8. 5.8  Electrical Characteristics—Current Consumption
    9. 5.9  Power-Up Timing Requirements
    10. 5.10 Power-Down Timing Requirements
    11. 5.11 Timing Requirements—Sequencer Clock
    12. 5.12 Timing Requirements—Host and Diagnostic Port SPI Interface
    13. 5.13 Timing Requirements—ADC Interface
    14. 5.14 Switching Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Analog to Digital Converter
        1. 6.3.1.1 Analog to Digital Converter Input Table
      2. 6.3.2 Power Sequencing and Monitoring
        1. 6.3.2.1 Power Monitoring
      3. 6.3.3 DMD Mirror Voltage Regulator
      4. 6.3.4 Low Dropout Regulators
      5. 6.3.5 System Monitoring Features
        1. 6.3.5.1 Windowed Watchdog Circuits
        2. 6.3.5.2 Die Temperature Monitors
        3. 6.3.5.3 External Clock Ratio Monitor
      6. 6.3.6 Communication Ports
        1. 6.3.6.1 Serial Peripheral Interface (SPI)
    4. 6.4 Device Functional Modes
      1. 6.4.1 OFF
      2. 6.4.2 STANDBY
      3. 6.4.3 POWERING_DMD
      4. 6.4.4 DISPLAY_RDY
      5. 6.4.5 PARKING
      6. 6.4.6 SHUTDOWN
    5. 6.5 Register Maps
      1. 6.5.1 System Status Registers
      2. 6.5.2 ADC Control
      3. 6.5.3 General Fault Status
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Headlight
        1. 7.2.1.1 Design Requirements
  9. 8 Power Supply Recommendations
    1. 8.1 TPS99001-Q1 Power Supply Architecture
    2. 8.2 TPS99001-Q1 Power Outputs
    3. 8.3 Power Supply Architecture
  10. 9 Layout
    1. 9.1 Layout Guidelines
      1. 9.1.1 Power/High Current Signals
      2. 9.1.2 Sensitive Analog Signals
      3. 9.1.3 High-Speed Digital Signals
      4. 9.1.4 Kelvin Sensing Connections
      5. 9.1.5 Ground Separation
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9.1.1 Power/High Current Signals

The TPS99001-Q1 switches a relatively high amount of current via the switching regulator which generates the voltages used by the DMD.

The DMD regulator consists of the following pins of the TPS99001-Q1:

Table 9-1 TPS99001-Q1 DMD Regulator Pins
PINNAMEPEAK BOARD CURRENT
49DMD_VOFFSET800mA
50DMD_VBIAS800mA
51DMD_VRESET800mA
52DRST_LS_IND800mA
53DRST_PGND800mA
54DRST_HS_IND800mA
55VIN_DRST800mA
56VSS_DRST800mA

The value of 800mA for these pins relates to the peak current through the inductor due to the nature of the switching regulator architecture. The DC for these paths will be closer to the load current drawn by the DMD.

In addition to these high current signals that are driven by the TPS99001-Q1, the LED driver electronics will likely have other circuits that handle the high currents required by the LEDs. These currents may be as high as 6A and therefore also requires special consideration by the layout engineer. As a guide for the PCB trace width requirements, the reader is referred to TI’s Application Note (SLUA366). The PCB trace widths used in TI’s design were:

Table 9-2 PCB Trace Widths
SIGNAL GROUPPCB TRACE WIDTH
DMD Regulator10 mils