SLAA996A
June 2021 – June 2021
TPA6304-Q1
Trademarks
1
Introduction
2
Understanding the Thermal Flow
3
Understanding the Test and System Conditions
3.1
Device Efficiency
3.2
Test Signals
3.2.1
Sinusoidal Signal
3.2.2
Pink Noise
3.2.3
Music File
3.3
Ambient Temperature
3.4
Junction Temperature
3.5
Thermal Interface Material and Heatsink
4
Calculating Dynamic Thermal Dissipation
5
Designing a Realistic Thermal Test
6
Thermal Tests
6.1
Test Setup
6.2
5W 1kHz Sine Wave Test
6.2.1
Calculations
6.2.2
Dynamic Calculation Results
6.2.3
Tested Results
6.2.4
Summary of Results
6.3
10W 1kHz Sine Wave Test
6.3.1
Calculations
6.3.2
Dynamic Calculation Results
6.3.3
Tested Results
6.3.4
Summary of Results
6.4
5W Pink Noise Test
6.4.1
Calculations
6.4.2
Dynamic Calculation Results
6.4.3
Tested Results
6.4.4
Summary of Results
6.5
10W 1kHz 85°C Test
6.5.1
Calculations
6.5.2
Dynamic Calculation Results
6.5.3
Tested Results
6.5.4
Summary of Results
7
Overall Summary
8
References
9
Revision History
6.5.2
Dynamic Calculation Results
Figure 6-15
Dynamic Calculation Table
Figure 6-16
Dynamic Calculation Results: 10W 1kHz 85°C Temperature Over Time
Temperatures at thermal equilibrium:
Junction Temperature = 110.8°C
Case Temperature = 105.5°C
Heatsink Temperature = 103.7°C