Texas Instruments UCC28C56EVM-066 User Manual page 29

High-density 40-w auxiliary power supply for 800-v traction inverters

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Performance Data

Table 5-2. Thermal Results: VIN = 800 V, 2.7 A, 40 W load

Transformer & PCB Temperatures:

Thermal camera measurement: 86.7 °C

Thermocouple measurement: 86.2 °C

Average temperature rise: 86.5 °C

PCB temperature: 37.6 °C

Transformer T

= 86.5 °C - 37.6°C = 48.9 °C

RISE

Figure 5-42. Transformer temperature is 86.7°C

Figure 5-43. Output diode temperature is 61.5°C

Figure 5-44. MOSFET temperature is 72.8°C

SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022

Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for

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800-V Traction Inverters

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