IRDC3840W Datasheet, PDF (11/17 Pages) International Rectifier – USER GUIDE FOR IR3840W EVALUATION BOARD

IRDC3840W
TYPICAL OPERATING WAVEFORMS
Vin=12V, Vo=1.8V, Io=0- 12A, Room Temperature, No Air Flow
93.0
92.5
92.0
91.5
91.0
90.5
90.0
89.5
89.0
88.5
88.0
87.5
10
20
30
40
50
60
70
80
Load Percentage (%)
Fig.15: Efficiency versus load current
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
10
20
30
40
50
60
70
80
Load Percentage(%)
Fig.16: Power loss versus load current
90
100
90
100
10/09/2009
11