SLASF99 December   2023 TAS5827

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 Timing Requirements
    7. 5.7 Typical Characteristics
      1. 5.7.1 Bridge Tied Load (BTL) Configuration Curves with BD Modulation
      2. 5.7.2 Bridge Tied Load (BTL) Configuration Curves with 1SPW Modulation
      3. 5.7.3 Parallel Bridge Tied Load (PBTL) Configuration With BD Modulation
      4. 5.7.4 Parallel Bridge Tied Load (PBTL) Configuration With 1SPW Modulation
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Power Supplies
      2. 6.3.2 Device Clocking
      3. 6.3.3 Serial Audio Port – Clock Rates
      4. 6.3.4 Clock Halt Auto-recovery
      5. 6.3.5 Sample Rate on the Fly Change
      6. 6.3.6 Serial Audio Port - Data Formats and Bit Depths
    4. 6.4 Device Functional Modes
      1. 6.4.1 Software Control
      2. 6.4.2 Speaker Amplifier Operating Modes
        1. 6.4.2.1 BTL Mode
        2. 6.4.2.2 PBTL Mode
      3. 6.4.3 Low EMI Modes
        1. 6.4.3.1 Spread Spectrum
        2. 6.4.3.2 Channel to Channel Phase Shift
        3. 6.4.3.3 Multi-Devices PWM Phase Synchronization
          1. 6.4.3.3.1 Phase Synchronization With I2S Clock In Startup Phase
          2. 6.4.3.3.2 Phase Synchronization With GPIO
      4. 6.4.4 Thermal Foldback
      5. 6.4.5 Device State Control
      6. 6.4.6 Device Modulation
        1. 6.4.6.1 BD Modulation
        2. 6.4.6.2 1SPW Modulation
        3. 6.4.6.3 Hybrid Modulation
      7. 6.4.7 Programming and Control
        1. 6.4.7.1 I2C Serial Communication Bus
        2. 6.4.7.2 Hardware Control Mode
        3. 6.4.7.3 I2C Target Address
          1. 6.4.7.3.1 Random Write
          2. 6.4.7.3.2 Sequential Write
          3. 6.4.7.3.3 Random Read
          4. 6.4.7.3.4 Sequential Read
          5. 6.4.7.3.5 DSP Memory Book, Page and BQ update
          6. 6.4.7.3.6 Checksum
            1. 6.4.7.3.6.1 Cyclic Redundancy Check (CRC) Checksum
            2. 6.4.7.3.6.2 Exclusive or (XOR) Checksum
        4. 6.4.7.4 Control via Software
          1. 6.4.7.4.1 Startup Procedures
          2. 6.4.7.4.2 Shutdown Procedures
        5. 6.4.7.5 Protection and Monitoring
          1. 6.4.7.5.1 Overcurrent Limit (Cycle-By-Cycle)
          2. 6.4.7.5.2 Overcurrent Shutdown (OCSD)
          3. 6.4.7.5.3 DC Detect Error
          4. 6.4.7.5.4 Overtemperature Shutdown (OTSD)
          5. 6.4.7.5.5 PVDD Overvoltage and Undervoltage Error
          6. 6.4.7.5.6 PVDD Drop Detection
          7. 6.4.7.5.7 Clock Fault
    5. 6.5 Register Maps
      1. 6.5.1 reg_map Registers
  8. 7 Application and Implementation
    1. 7.1 Typical Applications
      1. 7.1.1 2.0 (Stereo BTL) System
      2. 7.1.2 Mono (PBTL) Systems
      3. 7.1.3 Layout Guidelines
        1. 7.1.3.1 General Guidelines for Audio Amplifiers
        2. 7.1.3.2 Importance of PVDD Bypass Capacitor Placement on PVDD Network
        3. 7.1.3.3 Optimizing Thermal Performance
          1. 7.1.3.3.1 Device, Copper, and Component Layout
          2. 7.1.3.3.2 Stencil Pattern
          3. 7.1.3.3.3 PCB footprint and Via Arrangement
          4. 7.1.3.3.4 Solder Stencil
        4. 7.1.3.4 Layout Example
  9. 8 Power Supply Recommendations
    1. 8.1 DVDD Supply
    2. 8.2 PVDD Supply
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Device Nomenclature
      2. 9.1.2 Development Support
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

6.4.6.2 1SPW Modulation

The 1SPW mode alters the typical modulation scheme to achieve higher efficiency with a slight penalty in THD degradation and more attention required in the output filter selection. In Low Idle Current mode, the outputs operate at ~17% modulation during idle conditions. When an audio signal is applied, one output decreases, and one increases. The decreasing output signal rails to GND. At this point, all the audio modulation takes place through the rising output. The result is that only one output is switching during the bulk of the audio cycle. Efficiency is improved in this mode due to the reduction of switching losses.

GUID-674751C5-0AAF-48FD-BBA4-56A465B45AC2-low.gifFigure 6-9 1SPW Mode Modulation