ir3621 International Rectifier Corp., ir3621 Datasheet - Page 19

• Manufacturer Part Number: ir3621
• Description: 2-phase / Dual Synchronous Pwm Controller With Oscillator Synchronization And Pre-bias Startup
• Manufacturer: International Rectifier Corp.

TYPICAL APPLICATION
12V
PGood
Figure 20 - 2-phase operation with inductor current sensing using type 2 compensation.
C10
C3
C8
C9
R2
C5
C4
R3
R4
V
Vcc
Hiccup
Sync
V
Rt
Comp1
Comp2
PGood
SS2 / SD
SS1 / SD
CL
REF
C12
VcH1
IR3621
U1
V
12V to 1.8V @ 30A output
OUT3
OCSet1
OCSet2
PGnd2
PGnd1
HDrv2
HDrv1
LDrv2
LDrv1
V
V
VcH2
Gnd
SEN1
SEN2
Fb1
Fb2
V
www.irf.com
P2
V
SEN1
R6
R1
C13
Q2
Q3
Q4
Q5
C17
C14
D1
C11
R5
R9
L3
L4
IR3621 & (PbF)
C15
C18
R7
R8
R7
R8
C16
1.8V @ 30A
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