SLASEP6B September   2019  – December 2020 TPA6304-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
      1. 6.6.1 Bridge-Tied Load (BTL), BD
      2. 6.6.2 Parallel Bridge-Tied Load (PBTL)
      3. 6.6.3 Bridge-Tied Load (BTL), 1SPW
      4. 6.6.4 Bridge-Tied Load (BTL), 384 kHz, BD
      5. 6.6.5 Bridge-Tied Load (BTL), 384 kHz, 1SPW
  7. 7 Parameter measurement information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Single-Ended Analog Inputs
      2. 7.3.2  Gain Control
      3. 7.3.3  Class-D Operation and Spread Spectrum Control
        1. 7.3.3.1 High Frequency Pulse Width Modulator (PWM)
        2. 7.3.3.2 Clock Synchronization
        3. 7.3.3.3 Spread Spectrum Control
      4. 7.3.4  Gate Drive
      5. 7.3.5  Power FETs
      6. 7.3.6  Load Diagnostics
        1. 7.3.6.1 DC Load Diagnostics
          1. 7.3.6.1.1 Automatic DC Load Diagnostics at Device Initialization
          2. 7.3.6.1.2 Automatic DC Load Diagnostics During Hi-Z to MUTE or PLAY Transition
          3. 7.3.6.1.3 Manual Start of DC Load Diagnostics
          4. 7.3.6.1.4 Short-to-Ground
          5. 7.3.6.1.5 Short-to-Power
          6. 7.3.6.1.6 Shorted Load and Open Load
          7. 7.3.6.1.7 Line Output Diagnostics
        2. 7.3.6.2 AC Load Diagnostics
          1. 7.3.6.2.1 Operating Principal
          2. 7.3.6.2.2 Stimulus
          3. 7.3.6.2.3 Load Impedance
          4. 7.3.6.2.4 Tweeter Detection
          5. 7.3.6.2.5 Operation
      7. 7.3.7  Power Supply
        1. 7.3.7.1 Power-Supply Sequence
          1. 7.3.7.1.1 Power-Up Sequence
          2. 7.3.7.1.2 Power-Down Sequence
      8. 7.3.8  Device Initialization and Power-On-Reset (POR)
      9. 7.3.9  Protection and Monitoring
        1. 7.3.9.1 Over Current Protection
        2. 7.3.9.2 DC Detect
        3. 7.3.9.3 Load Current Limit
        4. 7.3.9.4 Clip Detect
        5. 7.3.9.5 Temperature Protection and Monitoring
          1. 7.3.9.5.1 Over Temperature Shutdown (OTSD)
          2. 7.3.9.5.2 Over Temperature Warning (OTW)
          3. 7.3.9.5.3 Thermal Gain Foldback (TGFB)
        6. 7.3.9.6 Power Failures
        7. 7.3.9.7 Load Dump Protection
      10. 7.3.10 Hardware Control Pins
        1. 7.3.10.1 FAULT Pin
        2. 7.3.10.2 STANDBY Pin
        3. 7.3.10.3 GPIO Pins
        4. 7.3.10.4 WARNING
        5. 7.3.10.5 MUTE
    4. 7.4 Device Functional Modes
      1. 7.4.1 Internal Reporting Signals
        1. 7.4.1.1 Fault Signal
        2. 7.4.1.2 Warning Signal
        3. 7.4.1.3 Clip Detect Signal
      2. 7.4.2 Device States and Flags
        1. 7.4.2.1 Audio Channel States
          1. 7.4.2.1.1 PROTECTIVE SHUTDOWN with AUTO RECOVERY State
          2. 7.4.2.1.2 PROTECTIVE SHUTDOWN State
            1. 7.4.2.1.2.1 Clear Fault
        2. 7.4.2.2 Status and Memory Registers
          1. 7.4.2.2.1 Status Registers
          2. 7.4.2.2.2 Memory Registers
      3. 7.4.3 Fault Events
        1. 7.4.3.1 Overview
        2. 7.4.3.2 Power Fault Events
          1. 7.4.3.2.1 DVDD POR
          2. 7.4.3.2.2 VBAT Over Voltage Fault
          3. 7.4.3.2.3 VBAT Under Voltage Fault
          4. 7.4.3.2.4 PVDD Over Voltage Fault
          5. 7.4.3.2.5 PVDD Under Voltage Fault
          6. 7.4.3.2.6 GVDD Fault
        3. 7.4.3.3 Over Temperature Shut Down (OTSD) Event
        4. 7.4.3.4 Over Current Shut Down (OCSD) Event
        5. 7.4.3.5 DC Fault Event
        6. 7.4.3.6 Load Current Fault Event
        7. 7.4.3.7 Invalid Clock Fault Event
      4. 7.4.4 Warning Events
        1. 7.4.4.1 Overview
        2. 7.4.4.2 Over Temperature Warning Event
        3. 7.4.4.3 Thermal Gain Foldback Warning Event
        4. 7.4.4.4 Load Current Warning Event
        5. 7.4.4.5 Clip Warning Event
    5. 7.5 Programming
      1. 7.5.1 I2C Serial Communication Bus
        1. 7.5.1.1 I2C Address Selection
      2. 7.5.2 I2C Bus Protocol
        1. 7.5.2.1 Random Write
        2. 7.5.2.2 Sequential Write
        3. 7.5.2.3 Random Read
        4. 7.5.2.4 Sequential Read
    6. 7.6 Register Maps
      1. 7.6.1 Registers
  9. 8 Application Information Disclaimer
    1. 8.1 Application Information
      1. 8.1.1 AM Radio Avoidance
      2. 8.1.2 Parallel BTL Operation (PBTL)
      3. 8.1.3 Reconstruction Filter Design
      4. 8.1.4 Bootstrap Capacitors
      5. 8.1.5 Line Driver Applications
    2. 8.2 Typical Applications
      1. 8.2.1 BTL Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Hardware Design Procedure
      2. 8.2.2 PBTL Application
        1. 8.2.2.1 Detailed Hardware Design Procedure
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Electrical Connection of Thermal Pad and Heat Sink
      2. 10.1.2 General Considerations
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary

Package Options

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

7.3.9.3 Load Current Limit

Under normal operation, during high level music playback, it is possible that dynamic load currents can rise beyond the maximum load current, ILIM, of the device. In these cases, the device dynamically limits the current into the load.

Each channel is independently monitored and limited. For each of the four over current (OC) levels that can be set in Miscellaneous Control Register 1, there is a corresponding ILIM as shown in Specifications.

If the load current limit is active for at least 50% of a 200 ms window, the device generates a Load Current Warning Event for the affected channel.

In case the load current warning event is active continuously for 800 ms the device generates a Load Current Fault Event and the channel is placed in the PROTECTIVE SHUTDOWN State. This puts the output stage is high impedance.

If OC level 4 is configured in Miscellaneous Control Register 1, the device will also generate a Load Current Fault Event in case the load current limiter is active consecutively for more than 10 ms.

By default, a fault signal generates an active low signal on the FAULT Pin for when an OC event occurs.