The PMP22085 can deliver 240 W with a small heat sink and approximately 200-LFM airflow. When air flow is not available, but with a small heat sink, the output capability is derated to 150 W. If a heat sink is not available, the output capability is further derated to 90 W.

Figure 2-2 VBUS = 24 V, VBAT = 21 V, IBAT = 9.6 A, About 200 W, IC Temp = 55.6°C, Q1 FET = 53.6°C, IND Temp = 53.8°C (With Heat Sink, About 200 LFM Airflow)