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
8
TYPICAL OPERATING WAVEFORMS
Vin=12.0V, Vo=3.3V, Io=0-6A, Room Temperature, no airflow
Fig. 10: Output Voltage Ripple, 6A load
Ch
1
: V
o
Fig. 11: Inductor node at 6A load
Ch
1
:LX
Fig. 12: Short circuit (Hiccup) Recovery
Ch
1
:V
o
, Ch
4
:I
o
Fig. 8: Start up at 6A Load,
Ch
1
:V
o
, Ch
2
:V
cc
, Ch
3
:V
in
, Ch
4
:PGood
Fig. 7: Start up at 6A Load
Ch
1
:V
o
, Ch
2
:Enable, Ch
3
:V
in
, Ch
4
:PGood
Fig. 9: Start up with 1.0V Pre Bias , 0A
Load, Ch
1
:V
o
