App note from ON Semiconductors on ways to dissipate thermals or reduce junction temperature of HVIC. Link here (PDF)
Gate drivers used to switch MOSFETs and IGBTs at high frequencies can dissipate significant amount of power depending on the operating conditions. It is important to determine the driver power dissipation and the resulting junction temperature in the application to ensure that the part is operating within acceptable temperature limits.
from Dangerous Prototypes https://ift.tt/3p6l6xr