IR3621 & (PbF)
19
www.irf.com
TYPICAL APPLICATION
Figure 20 - 2-phase operation with inductor current sensing using type 2 compensation.
12V to 1.8V @ 30A output
12V
PGood
Q5
L4
Q4
C5
U1
1.8V @ 30A
R8
C16
L3
C17
R9
R7
C10
R4
C9
R3
C8
C3
C4
C13
C11
PGnd1
V
CL
V
OUT3
LDrv1
HDrv1
Fb1
V
P2
Fb2
LDrv2
HDrv2
VcH1 VcH2
Vcc
Gnd
Comp2
Comp1
SS1 / SD
PGood
V
REF
IR3621
Q3
Q2
C14
Sync
Rt
Hiccup
SS2 / SD
PGnd2
OCSet2
OCSet1
V
SEN1
V
SEN2
R2
R1
R6
D1
C12
C18
R5
C15
R8
R7
V
SEN1
20
IR3621 & (PbF)
www.irf.com
TYPICAL OPERATING CHARACTERISTICS
VOUT3 vs. Temperature
6.1
6.12
6.14
6.16
6.18
6.2
6.22
6.24
-50 -25 0 25 50 75 100 125
Temperature (C)
VOUT3 (V)
Frequency vs. Temperature
(Rt=30.9kohm)
0
50
100
150
200
250
300
350
-50 -25 0 25 50 75 100 125
Temperature (C)
Frequency (kHz)
Transconductance vs. Temperature
500
1000
1500
2000
2500
-50 -25 0 25 50 75 100 125
Temperature (C)
Transconductance (umho)
Transconductance 1
Transconductance 2
SS Charge Current vs. Temperature
15
17
19
21
23
25
27
29
31
-50 -25 0 25 50 75 100 125
Temperature (C)
SS Charge Current (uA)
SS1
SS2
Vfb1 vs. Temperature
0.7940
0.7960
0.7980
0.8000
0.8020
0.8040
0.8060
-50 0 50 100 150
Temperature [C]
Vfb1 [V]
Vfb2 vs. Temperature
0.7940
0.7960
0.7980
0.8000
0.8020
0.8040
0.8060
-50 0 50 100 150
Temperature [C]
Vfb2 [V]
IR3621 & (PbF)
21
www.irf.com
TYPICAL OPERATING CHARACTERISTICS
Static Supply Current vs. Temperature
0
5
10
15
20
25
30
-50 -25 0 25 50 75 100 125
Temperature (C)
Static Supply Current (uA)
ICC ICH1+ICH2 ICL
Dynamic Supply Current vs. Temperature
(300kHz, 1500pF)
0
5
10
15
20
25
30
-50 -25 0 25 50 75 100 125
Temperature (C)
Dynamic Supply Current (uA)
ICC ICH1+ICH2 ICL
IOCSet vs. Temperature
15
16
17
18
19
20
21
22
23
24
25
-50 -25 0 25 50 75 100 125
Temperature (C)
IOCSet (uA)
IOCSet1
IOCSet2
Deadband Time vs. Temperature
0
10
20
30
40
50
60
70
80
90
100
-50 -25 0 25 50 75 100 125
Temperature (C)
Deadband time (ns)
H_to_L_1 H_to_L_2
L_to_H_1 L_to_H_2
HI Drive Rise/Fall Time vs. Temperature
5
10
15
20
25
30
35
-50 -25 0 25 50 75 100 125
Temperature (C)
Rise/Fall time (ns)
HI Dr1 Rise HI Dr2 Ris
e
HI Dr1 Fall HI Dr2 Fall
LO Drive Rise/Fall Time vs. Temperature
5
10
15
20
25
30
35
-50-250 255075100125
Temperature (C)
Rise/Fall time (ns)
LO Dr1 Rise LO Dr2 Rise
LO Dr1 Fall LO Dr2 Fall

IR3621FTRPBF

Mfr. #:
Manufacturer:
Infineon / IR
Description:
Switching Controllers
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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