IRDC3847-P1V2
4/11/2013
7
TYPICAL OPERATING WAVEFORMS
Vin=12.0V, Vo=1.2V, Io=0A-25A, Fsw=600kHz, Room Temperature, No air flow
Fig. 6: Inductor node at 25A load
Ch
2
:LX
Fig. 3: Start up at 25A Load
Ch
1
:V
in
, Ch
2
:V
o
, Ch
3
:PGood,Ch
4
:V
cc
Fig. 2: Start up at 25A Load
Ch
1
:V
in
, Ch
2
:V
o
, Ch
3
:PGood, Ch
4
:Enable
Fig. 4: Start up with 1.08V Pre Bias, 0A Load
Ch
1
:Enable, Ch
2
:Vout, Ch
3
:PGood
Fig. 7: Short (Hiccup) Recovery
Ch
2
:Vout , Ch
3
:PGood, Ch
4
:Iout
Fig. 5: Output Voltage Ripple, 25A load
Ch
1
: Vout
