DLPS240A June   2024  – August 2024 DLPA3085

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
    6. 5.6 SPI Timing Parameters
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Description
    3. 6.3 Feature Description
      1. 6.3.1 Supply and Monitoring
        1. 6.3.1.1 Supply
        2. 6.3.1.2 Monitoring
          1. 6.3.1.2.1 Block Faults
          2. 6.3.1.2.2 Auto LED Turn-Off Functionality
          3. 6.3.1.2.3 Thermal Protection
      2. 6.3.2 Illumination
        1. 6.3.2.1 Programmable Gain Block
        2. 6.3.2.2 LDO Illumination
        3. 6.3.2.3 Illumination Driver A
        4. 6.3.2.4 RGB Strobe Decoder
          1. 6.3.2.4.1 Break Before Make (BBM)
          2. 6.3.2.4.2 Openloop Voltage
          3. 6.3.2.4.3 Transient Current Limit
        5. 6.3.2.5 Illumination Monitoring
          1. 6.3.2.5.1 Power Good
          2. 6.3.2.5.2 Ratio Metric Overvoltage Protection
        6. 6.3.2.6 Illumination Driver Plus Power FETs Efficiency
      3. 6.3.3 External Power FET Selection
        1. 6.3.3.1 Threshold Voltage
        2. 6.3.3.2 Gate Charge and Gate Timing
        3. 6.3.3.3 RDS(ON)
      4. 6.3.4 DMD Supplies
        1. 6.3.4.1 LDO DMD
        2. 6.3.4.2 DMD HV Regulator
        3. 6.3.4.3 DMD/DLPC Buck Converters
        4. 6.3.4.4 DMD Monitoring
          1. 6.3.4.4.1 Power Good
          2. 6.3.4.4.2 Overvoltage Fault
      5. 6.3.5 Buck Converters
        1. 6.3.5.1 LDO Bucks
        2. 6.3.5.2 General Purpose Buck Converters
        3. 6.3.5.3 Buck Converter Monitoring
          1. 6.3.5.3.1 Power Good
          2. 6.3.5.3.2 Overvoltage Fault
        4. 6.3.5.4 Buck Converter Efficiency
      6. 6.3.6 Auxiliary LDOs
      7. 6.3.7 Measurement System
    4. 6.4 Device Functional Modes
    5. 6.5 Programming
      1. 6.5.1 SPI
      2. 6.5.2 Interrupt
      3. 6.5.3 Fast-Shutdown in Case of Fault
    6. 6.6 Register Maps
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Component Selection for General-Purpose Buck Converter
      3. 7.2.3 Application Curve
    3. 7.3 System Example With DLPA3085 Internal Block Diagram
  9. 8 Power Supply Recommendations
    1. 8.1 Power-Up and Power-Down Timing
  10. 9 Layout
    1. 9.1 Layout Guidelines
      1. 9.1.1 SPI Connections
      2. 9.1.2 RLIM Routing
      3. 9.1.3 LED Connection
    2. 9.2 Layout Example
    3. 9.3 Thermal Considerations
  11. 10Device and Documentation Support
    1. 10.1 Third-Party Products Disclaimer
    2. 10.2 Device Support
      1. 10.2.1 Device Nomenclature
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

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

4 Pin Configuration and Functions

DLPA3085 PFD Package100-Pin HTQFPTop View Figure 4-1 PFD Package100-Pin HTQFPTop View
Table 4-1 Pin Functions
PINI/ODESCRIPTION
NAMENO.
N/C1—No connect
DRST_LS_IND2I/OConnection for the DMD SMPS-inductor (low-side switch)
DRST_5P5V3OFilter pin for LDO DMD. Power supply for internal DMD reset regulator, typical 5.5V
DRST_PGND4GNDPower ground for DMD SMPS. Connect to ground plane.
DRST_VIN5POWERPower supply input for LDO DMD. Connect to system power.
DRST_HS_IND6I/OConnection for the DMD SMPS-inductor (high-side switch)
ILLUM_5P5 V7OFilter pin for LDO ILLUM. Power supply for internal ILLUM block, typical 5.5V
ILLUM_VIN8POWERSupply input of LDO ILLUM. Connect to system power.
CH1_SWITCH9ILow-side MOSFET switch for LED Cathode. Connect to RGB LED assembly.
CH1_SWITCH10ILow-side MOSFET switch for LED Cathode. Connect to RGB LED assembly.
RLIM_111OConnection to LED current sense resistor for CH1 and CH2
RLIM_BOT_K_212IKelvin sense connection to ground side of LED current sense resistor
RLIM_K_213IKelvin sense connection to top side of current sense resistor
RLIM_BOT_K_114IKelvin sense connection to ground side of LED current sense resistor
RLIM_K_115IKelvin sense connection to top side of current sense resistor
RLIM_116OConnection to LED current sense resistor for CH1 and CH2
CH2_SWITCH17ILow-side MOSFET switch for LED cathode. Connect to RGB LED assembly.
CH2_SWITCH18ILow-side MOSFET switch for LED cathode. Connect to RGB LED assembly.
CH1_GATE_CTRL19OGate control of CH1 external MOSFET switch for LED cathode
CH2_GATE_CTRL20OGate control of CH2 external MOSFET switch for LED cathode
CH3_GATE_CTRL21OGate control of CH3 external MOSFET switch for LED cathode
RLIM_222OConnection to LED current sense resistor for CH3
RLIM_223OConnection to LED current sense resistor for CH3
CH3_SWITCH24ILow-side MOSFET switch for LED Cathode. Connect to RGB LED assembly.
CH3_SWITCH25ILow-side MOSFET switch for LED Cathode. Connect to RGB LED assembly.
ILLUM_HSIDE_DRIVE26OGate control for external high-side MOSFET for ILLUM Buck converter
ILLUM_LSIDE_DRIVE27OGate control for external low-side MOSFET for ILLUM Buck converter
ILLUM_A_BOOST28ISupply voltage for high-side N-channel MOSFET gate driver. A 100nF capacitor (typical) must be connected between this pin and ILLUM_A_SW.
ILLUM_A_FB29IInput to the buck converter loop controlling ILED
ILLUM_A_VIN30POWERPower input to the ILLUM Driver A
ILLUM_A_SW31I/OSwitch node connection between high-side NFET and low-side NFET. Serves as a common connection for the flying high side FET driver
ILLUM_A_PGND32GNDGround connection to the ILLUM Driver A
ILLUM_B_BOOST33ISupply voltage for high-side N-channel MOSFET gate driver
ILLUM_B_VIN34POWERPower input to the ILLUM driver B
ILLUM_B_FB35IInput to the buck converter loop controlling ILED
ILLUM_B_SW36I/OSwitch node connection between high-side NFET and low-side NFET
ILLUM_B_PGND37GNDGround connection to the ILLUM driver B
ILLUM_A_COMP138I/OConnection node for feedback loop components
ILLUM_A_COMP239I/OConnection node for feedback loop components
ILLUM_B_COMP140I/OConnection node for feedback loop components
ILLUM_B_COMP241I/OConnection node for feedback loop components
THERMAL_PAD42GNDThermal pad. Connect to a clean system ground.
CLK_OUT43ONo connect. Reserved for color wheel clock output
CW_SPEED_PWM_OUT44ONo connect. Reserved for color wheel PWM output
SPI_VIN45ISupply for SPI interface
SPI_CLK46ISPI clock input
SPI_MISO47OSPI data output
SPI_SS_Z48ISPI chip select (active low)
SPI_MOSI49ISPI data input
PWR7_BOOST50INo connect. Reserved for general purpose buck converter. Charge-pump-supply input for the high-side FET gate drive circuit. Connect a 100nF capacitor between PWR7_BOOST and PWR7_SWITCH pins.
PWR7_FB51INo connect. Reserved for general purpose buck converter. Converter feedback input. Connect to converter output voltage.
PWR7_VIN52POWERNo connect. Reserved for general purpose buck converter. Power supply input for converter
PWR7_SWITCH53I/ONo connect. Reserved for general purpose buck converter. Switch node connection between high-side NFET and low-side NFET
PWR7_PGND54GNDNo connect. Reserved for general purpose buck converter. Ground pin. Power ground return for switching circuit
PROJ_ON55IInput signal to enable and or disable the IC and DLP projector
ACMPR_LABB_SAMPLE56IControl signal to sample voltage at ACMPR_IN_LABB. Needs to connect a pull-down 10kΩ resistor to ground when the pin is not used.
RESET_Z57OReset output to the DLP system (active low). The pin is held low to reset DLP system.
INT_Z58OInterrupt output signal (open drain, active low). Connect to the pullup resistor.
DGND59GNDDigital ground. Connect to ground plane.
CH_SEL_060IControl signal to enable either of CH1,2,3
CH_SEL_161IControl signal to enable either of CH1,2,3
PWR6_PGND62GNDGround pin. Power ground return for switching circuit
PWR6_SWITCH63I/OSwitch node connection between high-side NFET and low-side NFET
PWR6_VIN64POWERPower supply input for converter
PWR6_BOOST65ICharge-pump-supply input for the high-side FET gate drive circuit. Connect a 100nF capacitor between PWR6_BOOST and PWR6_SWITCH pins.
PWR6_FB66IConverter feedback input. Connect to output voltage.
PWR5_VIN67POWERNo connect. Reserved for general purpose buck converter. Power supply input for converter
PWR5_SWITCH68I/ONo connect. Reserved for general purpose buck converter. Switch node connection between high-side NFET and low-side NFET
PWR5_BOOST69INo connect. Reserved for general purpose buck converter. Charge-pump-supply input for the high-side FET gate drive circuit. Connect 100nF capacitor between PWR5_BOOST and PWR5_SWITCH pins.
PWR5_PGND70GNDNo connect. Reserved for general purpose buck converter. Ground pin. Power ground return for switching circuit
PWR5_FB71INo connect. Reserved for general purpose buck converter. Converter feedback input. Connect to output voltage.
PWR2_FB72IConverter feedback input. Connect to output voltage.
PWR2_PGND73GNDGround pin. Power ground return for switching circuit
PWR2_SWITCH74I/OSwitch node connection between high-side NFET and low-side NFET
PWR2_VIN75POWERPower supply input for converter
PWR2_BOOST76ICharge-pump-supply input for the high-side FET gate drive circuit. Connect a 100nF capacitor between PWR2_BOOST and PWR2_SWITCH pins.
ACMPR_IN_177IReserved. Input for analog sensor signal. No connect when the pin is not used.
ACMPR_IN_278IInput for analog sensor signal. No connect when the pin is not used.
ACMPR_IN_379IInput for analog sensor signal. No connect when the pin is not used.
ACMPR_IN_LABB80IInput for ambient light sensor, sampled input. No connect when the pin is not used.
ACMPR_OUT81OAnalog comparator out. No connect when the pin is not used.
ACMPR_REF82IReference voltage input for analog comparator. No connect when the pin is not used.
PWR_VIN83POWERPower supply input for LDO_Bucks. Connect to system power.
PWR_5P5V84OFilter pin for LDO_BUCKS. Internal analog supply for buck converters, typical 5.5V
VINA85POWERInput voltage supply pin for reference system
AGND86GNDAnalog ground pin
PWR3_OUT87OFilter pin for LDO_2 DMD/DLPC/AUX, typical 2.5V
PWR3_VIN88POWERPower supply input for LDO_2. Connect to system power.
PWR4_OUT89OFilter pin for LDO_1 DMD/DLPC/AUX, typical 3.3V
PWR4_VIN90POWERPower supply input for LDO_1. Connect to system power.
SUP_2P5V91OFilter pin for LDO_V2V5. Internal supply voltage, typical 2.5V
SUP_5P0V92OFilter pin for LDO_V5V. Internal supply voltage, typical 5V
PWR1_PGND93GNDGround pin. Power ground return for switching circuit
PWR1_FB94IConverter feedback input. Connect to output voltage.
PWR1_SWITCH95I/OSwitch node connection between high-side NFET and low-side NFET
PWR1_VIN96POWERPower supply input for converter
PWR1_BOOST97ICharge-pump-supply input for the high-side FET gate drive circuit. Connect a 100nF capacitor between PWR1_BOOST and PWR1_SWITCH pins.
DMD_VOFFSET98OVOFS output rail. Connect to ceramic capacitor.
DMD_VBIAS99OVBIAS output rail. Connect to ceramic capacitor.
DMD_VRESET100OVRESET output rail. Connect to ceramic capacitor.