Thermal image are shown in the following figures.

All images were taken after running the supply at maximum load for 30 minutes. The board was mounted horizontally in open air at an ambient temp of 21°C with no additional air flow.

Bx1 – IC (U6)

Figure 2-3 Buck: 24-V Input

Bx1 – Diode (D2)
Bx2 – Transformer (T1)

Figure 2-5 Flyback Secondary: 24-V Input

Bx1 – TVS Clamp (D3)
Bx2 – Transformer (T1)
Bx3 – Primary FET (Q3)

Figure 2-7 Flyback Primary: 10-V Input

Bx1 – eFuse (U1)

Figure 2-9 Input Protection: 10-V Input

Bx1 – TVS Clamp (D3)
Bx2 – Transformer (T1)
Bx3 – Primary FET (Q3)

Figure 2-4 Flyback Primary: 24-V Input

Bx1 – eFuse (U1)

Figure 2-6 Input Protection: 24-V Input

Bx1 – Diode (D2)
Bx2 – Transformer (T1)

Figure 2-8 Flyback Secondary: 10-V Input