For > 40-A continuous current, either the heat sink or forced cooling is
needed.
The measurements show almost same
temperature around the following conditions:
- a) 53°C for 30-A continuous
current at the bare PCB and for 60-A continuous current by using the fan, both
marked in Table 2-1 in blue.
- b) 66°C for 40-A continuous
current at the bare PCB and for 50-A continuous current by using a heat sink,
both marked in Table 2-1 in magenta.
Note: Forced cooling is the most effective method and allows twice the load
current.