IRDC3820 International Rectifier, IRDC3820 Datasheet - Page 8

• Manufacturer Part Number: IRDC3820
• Description: BOARD EVAL SYNC BUCK CONVERTER
• Manufacturer: International Rectifier

Specifications of IRDC3820

• Silicon Manufacturer: International Rectifier
• Kit Application Type: Power Management - Voltage Regulator
• Application Sub Type: Synchronous Buck Converter
• Features: Programmable Soft Start, Programmable
• Rohs Compliant: Yes

TYPICAL OPERATING WAVEFORMS
Vin=Vcc=12.0V, Vo=1.8V, Io=0- 12A, Room Temperature, No Air Flow
Rev 0.0
01/07/2008
Ch
Fig. 9: Pre-Bias Start up, 0A Load
Fig. 11: Inductor node at 12A load
1
Fig. 7: Start up at 12A Load
:V
Ch
in
, Ch
1
:V
Ch
in
2
, Ch
:V
1
SS
:LX, Ch
2
, Ch
:V
SS
3
, Ch
:V
4
:I
out
out
3
, Ch
:V
out
4
:I
out
Fig. 10: Output Voltage Ripple, 12A load
Ch
Fig. 12: Short (Hiccup) Recovery
1
:V
Fig. 8: Start up at 12A Load,
in
, Ch
Ch
Ch
2
1
:V
1
:V
: V
SS
SS
out ,
, Ch
, Ch
Ch
3
2
:V
4
:V
: I
out
out
IRDC3820
out
, Ch
4
:V
PGood
8