Texas Instruments UCC28C56EVM-066 User Manual page 28

Igh-density 40-w auxilary power supply for 800-v traction inverters

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Performance Data

Figure 5-39. Transformer temperature is 55.7°C

Figure 5-40. Output diode temperature is 43.6°C

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

800-V Traction Inverters

Table 5-1. Thermal Results: VIN = 50 V, 1.3 A, 20 W load

Transformer & PCB Temperatures:

Thermal camera measurement: 55.7 °C

Thermocouple measurement: 53.9 °C

Average temperature rise: 54.8 °C

PCB temperature: 30.6 °C

Transformer T

= 53.9 °C - 30.6 °C = 23.3 °C

RISE

Figure 5-41. MOSFET temperature is 46.3°C

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SLUUCN1 – JUNE 2022

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