The
power dissipated by the device is directly proportional to
the drive voltage, heavy capacitive loading,
and/or
high switching frequency (refer to
Power Dissipation
Considerations section for more details). Proper
PCB layout helps dissipate heat from the device to the PCB and minimize junction
to board thermal impedance
(θJB).
Increasing the PCB copper connecting to VCC2 and VEE2 is recommended, with priority on maximizing the connection to VEE2. However, high voltage PCB considerations mentioned above must be maintained.
If there are multiple layers in the system, it is also recommended to connect the VCC2 and VEE2 to internal ground or power planes through multiple vias of adequate size. However, keep in mind that there shouldn’t be any traces/coppers from different high voltage planes overlapping.