DLPS280 October   2024 DLPA3082

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 Thermal Protection
      2. 6.3.2 DMD Supplies
        1. 6.3.2.1 LDO DMD
        2. 6.3.2.2 DMD HV Regulator
        3. 6.3.2.3 DMD/DLPC Buck Converters
        4. 6.3.2.4 DMD Monitoring
          1. 6.3.2.4.1 Power Good
          2. 6.3.2.4.2 Overvoltage Fault
      3. 6.3.3 Buck Converters
        1. 6.3.3.1 LDO Bucks
        2. 6.3.3.2 General Purpose Buck Converters
        3. 6.3.3.3 Buck Converter Monitoring
          1. 6.3.3.3.1 Power Good
          2. 6.3.3.3.2 Overvoltage Fault
        4. 6.3.3.4 Buck Converter Efficiency
      4. 6.3.4 Auxiliary LDOs
      5. 6.3.5 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. 7.3 System Example with DLPA3082 Internal Block Diagram
    4. 7.4 Power Supply Recommendations
      1. 7.4.1 Power-Up and Power-Down Timing
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
        1. 7.5.1.1 SPI Connections
      2. 7.5.2 Layout Example
      3. 7.5.3 Thermal Considerations
  9. 8 Device and Documentation Support
    1. 8.1 Third-Party Products Disclaimer
    2. 8.2 Device Support
      1. 8.2.1 Device Nomenclature
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

6.5.3 Fast-Shutdown in Case of Fault

The DLPA3082 has two shutdown modes: a normal shutdown initiated after pulling PROJ_ON level low and a fast power-down mode. The fast power-down feature can be enabled or disabled through register Main Status register (0x01), bit 7, FAST_SHUTDOWN_EN. By default, the mode is enabled.

When the fast power-down feature is enabled, a fast shutdown is initiated for specific faults. This shutdown happens autonomously from the DLPC. The DLPA3082 enters the fast-shutdown mode only for specific faults, thus not for all the faults flagged by the DLPA3082. The faults for which the DLPA3082 goes into fast shutdown are listed in Table 6-6.

Table 6-6 Faults that Trigger a Fast-Shutdown
HIGH-LEVELLOW-LEVEL
TS_SHUT
DMD_FAULTDMD_PG_FAULT
BUCK_DMD1_PG_FAULT
BUCK_DMD1_OV_FAULT
BUCK_DMD2_PG_FAULT
BUCK_DMD2_OV_FAULT
LDO_GP1_PG_FAULT / LDO_DMD1_PG_FAULT
LDO_GP1_OV_FAULT / LDO_DMD1_OV_FAULT
LDO_GP2_PG_FAULT / LDO_DMD2_PG_FAULT
LDO_GP2_OV_FAULT / LDO_DMD2_OV_FAULT