© 2013 Fairchild Semiconductor Corporation
7
FEBFDMQ8203_90W • Rev. 1.0.1
5.
Performance of Evaluation Board
Figure 5 through Figure 9 show the measured efficiency and power loss on the evaluation
board when operated under the conditions in Table 4. This board is optimized for
3.3 V
OUT
, 300 kHz f
SW
, and peak 27 A I
OUT
specifications.
Table 4. Test Conditions
V
IN
V
OUT
f
SW
I
OUT
Cooling
42 ~ 57 V
3.3 V
300 kHz
0~27 A, 5 A Step, 3-minute soak time
No
Figure 5. Efficiency at V
OUT
=3.3 V, f
SW
=300 kHz, Soaking=3 Minutes, T
A
=25°C
Figure 6. Power Loss at V
OUT
=3.3 V, f
SW
=300 kHz, Soaking=3 Minutes, T
A
=25°C
