The efficiency of this EVM peaks at a load current of about 4 A and then decreases as the load current increases toward full load. Figure 2-1 shows the efficiency for the TPS54824EVM-779 at an ambient temperature of 25°C.

Figure 2-1 TPS54824EVM-779 Efficiency - Cyntec Inductor

Figure 2-2 shows the efficiency for the TPS54824EVM-779 using a semi-log scale to more easily show efficiency at lower output currents. The ambient temperature is 25°C.

Figure 2-2 TPS54824EVM-779 Low Current Efficiency - Cyntec Inductor

Figure 2-3 shows the efficiency for the TPS54824EVM-779 with a WE 744311100 inductor. The ambient temperature is 25°C.

Figure 2-3 TPS54824EVM-779 Efficiency - Wurth Electronics 744311100 Inductor

The efficiency may be lower at higher ambient temperatures, due to temperature variation in the drain-to-source resistance of the internal MOSFETs.