SLAAEI4 August   2024 TAC5111-Q1 , TAC5212-Q1 , TAC5311-Q1 , TAC5312-Q1 , TAC5411-Q1 , TAC5412-Q1 , TAD5212-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Signal Processing Chain
  6. 3Distortion Limiter
    1. 3.1 Distortion Limiter Parameters
      1. 3.1.1 Threshold Maximum
      2. 3.1.2 Threshold Minimum
      3. 3.1.3 Inflection Point
      4. 3.1.4 Slope
      5. 3.1.5 Attack Rate
      6. 3.1.6 Release Rate
      7. 3.1.7 Hold Counter
    2. 3.2 Limiter Response
  7. 4Brown-Out Protection
    1. 4.1 Brown-Out Protection Parameters
      1. 4.1.1 Critical Level
      2. 4.1.2 Gain Level
      3. 4.1.3 Attack Rate
      4. 4.1.4 Release Rate
      5. 4.1.5 Hold Counter
    2. 4.2 Brown-Out Protection Response
  8. 5Thermal Foldback
    1. 5.1 Thermal Foldback Parameters
      1. 5.1.1 Temperature Threshold
      2. 5.1.2 Maximum Attenuation Threshold
      3. 5.1.3 Slope
      4. 5.1.4 Attack Coefficient
      5. 5.1.5 Release Coefficient
      6. 5.1.6 Hold Counter
        1. 5.1.6.1 Thermal Foldback Response
  9. 6Example
  10. 7Summary
  11. 8References

5.1 Thermal Foldback Parameters

Table 5-1 shows the parameters of the Thermal Foldback algorithm. The parameters reside in the 32-bit-wide coefficient memory (Book 0, page 26) of the device.

Table 5-1 Thermal Foldback Parameters
Thermal Foldback ParameterFunction and Description
Temperature Threshold (deg)A user-defined temperature level parameter, that if exceeded, applies a gain decrease to the output signal
Maximum Attenuation Threshold (dB)The maximum amount of attenuation applied to the output signal if the temperature threshold is triggered
Slope (dB/deg)The rate in dB, per degree attenuation, applied to the output signal until max attenuation level is reached
Attack Coefficient (dB/step)The step rate response when Thermal Foldback triggers a gain decrease
Release Coefficient (dB/step)The step rate response when Thermal Foldback triggers a gain increase
Hold Counter (ms)The amount of time taken following a change in VBAT before the Thermal Foldback block attenuates the output signal level