IRDC3812 International Rectifier, IRDC3812 Datasheet - Page 8

• Manufacturer Part Number: IRDC3812
• Description: BOARD EVAL SYNC BUCK CONVERTER
• Manufacturer: International Rectifier

Specifications of IRDC3812

• 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, Vp=0- 0.6V, Vo=0.75V, Io=0- 4A, Room Temperature, No Air Flow
Rev 0.1
01/07/2008
Fig. 9: Pre-Bias Start up, 0A Load, V
Fig. 11: Inductor node at 4A load, V
Fig. 7: Start up at 4A Load, V
Ch
1
:V
Ch
in
1
, Ch
:V
Ch
in
, Ch
2
:V
2
:LX, Ch
p
, Ch
2
:V
SS
3
:V
, Ch
4
:I
out
out
, Ch
3
:V
p
: 0- 0.6V
out
4
:V
ss
p
p
:0.6V
:0.6V
Fig. 8: Tracking Operation V
Fig. 12: Short (Hiccup) Recovery, V
Fig. 10: Output Voltage Ripple, 4A load,
Ch
V
p
1
:0.6V, Ch
:V
Ch
in
, Ch
2
:V
SS
2
:V
1
, Ch
: V
p
, Ch
out ,
3
:V
3
Ch
:V
out
IRDC3812
p
: 0- 0.6V , 4A Load
out
4
: I
, Ch
out
4
p
:V
:0.6V
ss
8