IRDC3898-P3V3
8/15/2013
Confidential
This evaluation board is a preliminary version meant for the engineering evaluation of the IR3898.
Based on the results of the continuing evaluation, this board can evolve and change without notice
12
Fig. 18: Power loss versus load current
Fig. 17: Efficiency versus load current
TYPICAL OPERATING WAVEFORMS
Vin=12.0V, Vo=3.3V, Io=0-6A, Room Temperature, no air flow
85
86
87
88
89
90
91
92
93
94
95
0.
5
1
.0
1.
5
2.
0
2.
5
3.
0
3.
5
4.
0
4.
5
5.
0
5.
5
6.
0
E
ff
ici
ency
(
%
)
Load Current (A)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0.
5
1.
0
1.
5
2.
0
2.
5
3.
0
3.
5
4.
0
4.
5
5.
0
5.
5
6.
0
P
o
w
er
Diss
ipat
ion
(
W
)
Load Current (A)