SLVAFH4 January   2023 TPS62870 , TPS62870-Q1 , TPS62871 , TPS62871-Q1 , TPS62872 , TPS62872-Q1 , TPS62873 , TPS62873-Q1 , TPS62874-Q1 , TPS62875-Q1 , TPS62876-Q1 , TPS62877-Q1 , TPSM8287A06 , TPSM8287A10 , TPSM8287A12 , TPSM8287A15

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Configurations
  5. 3Measurements
    1. 3.1 Efficiency
    2. 3.2 Input Voltage Ripple
    3. 3.3 Output Voltage Ripple
    4. 3.4 Load Transient
    5. 3.5 Heat Distribution
  6. 4Summary

Heat Distribution

GUID-20230105-SS0I-0HH7-NDGP-D1F7CWXPW2RJ-low.jpg Figure 3-5 Heat Distribution of Single Converter
GUID-20230105-SS0I-9FLZ-JKH7-XXWMM827FBPL-low.jpg Figure 3-6 Heat Distribution of Dual Converter

Figure 3-5 and Figure 3-6 show thermal images of both converter implementations operating at 12 A output current. The higher efficiency of the dual converter implementation and the wider PCB area used to spread the heat allows the dual converter implementation to operate at almost 20°C lower temperature compared to the single converter implementation.