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IRU3047CWTR
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P19
IRU3047
13
Rev. 1.0
09/09/02
www.irf.com
TYPICAL APPLICATION
Dual Input: 5V and 12V to 1.5V @ 16A
3.3V to 2.5V @ 2A
Figure 9 - Typical application of IRU3047, configured as
a 2-phase converter in current sharing mode.
12V
5V
2.5V
@ 2A
PGood
C13
47uF
Q3
3.3V
U1
C29
0.1uF
C34
C9
1uF
PGnd
V
CL
V
OUT3
LDrv1
HDrv1
Fb1
Vp2
Fb2
LDrv2
HDrv2
VcH1
VcH2
Vcc
Gnd
Comp2
Fb3
Comp1
SS
PGood
V
REF
IRU3047
Q2
IRF7457
Q1
IRF7460
R6 10
V
R7 1K
R10
1K
C18
47uF
R21
16.5K
6.8nF
C24
R16
29.4K
2200pF
C30
1uF
Q5
IRF7457
Q4
IRF7460
C2
33uF
C1
33uF
C5
330uF
C31
330uF
C6
1uF
C4
47uF
C32
47uF
L1
1uH
L2
1uH
C3
0.1uF
D1
BAT54S
C23
1uF
L4 3.3uH
L3 2.2uH
R17
R3
5m
V
5m
V
R8
200
R12
1K
C10,C11,C12
3x 150uF
C15
1uF
C19,C20,C21
3x 150uF
1.5V
@ 16A
C8
1uF
R19
4.7
V
C26
470pF
C14
470pF
R5
4.7
V
IRLR2703
14
Rev. 1.0
09/09/02
IRU3047
www.irf.com
Figure 10 - Typical application for IRU3047 configured as two independent controllers.
TYPICAL APPLICATION
12V to 1.8V @ 8A
5V to 2.5V @ 8A
3.3V to 2.5V @ 2A
12V
5V
2.5V
@ 2A
PGood
C1
33uF
L1
C6
47uF
R2
1K
L4
Q1
C5
1uF
C7
47uF
3.3V
U1
1.8V
@ 8A
R8
1K
C16
2x 150uF
L3
C17
2x 150uF
R7
442
V
C10
0.1uF
R1
R4
C9
2200uF
R3
C8
2200pF
C3
1uF
C4
1uF
D1
D2
PGnd
V
CL
V
OUT3
LDrv1
HDrv1
Fb1
Vp2
LDrv2
HDrv2
VcH1
VcH2
Vcc
Gnd
Comp2
Fb3
Comp1
SS
PGood
V
REF
IRU3047
C14
2x 47uF
1uH
C11
0.1uF
4.7uH
3.9uH
2.5V
@ 8A
R9
1K
C12
2x 150uF
R5
1K
Fb2
1K
19K
22K
IRLR2703
Q2
IRF7460
Q3
IRF7457
C13
1uF
Q5
IRF7457
Q4
IRF7457
L2
1uH
C2
33uF
IRU3047
15
Rev. 1.0
09/09/02
www.irf.com
TYPICAL APPLICATION
Figure 11 - Typical application for IRU3047 configured for DDR memory application.
12V
5V
1.8V
@ 2A
PGood
C1
33uF
L1
C6
47uF
R2
1K
L3
Q1
C5
1uF
C7
47uF
3.3V
U1
V
DDQ
= 2.5V
@ 4A
R8
1K
C16
330uF
L2
C17
2x 150uF
R7
442
V
C10
0.1uF
R1
R4
C9
5600pF
R3
C8
3900pF
C3
1uF
C4
1uF
PGnd
V
CL
V
OUT3
LDrv1
HDrv1
Fb1
Vp2
LDrv2
HDrv2
VcH1
VcH2
Vcc
Gnd
Comp2
Fb3
Comp1
SS
PGood
V
REF
IRU3047
C14
150uF
1uH
5.6uH
4.7uH
V
TT
= 1.25V
@ 4A
C12
330uF
Fb2
442
10K
16.2K
IRLR2703
1/2 Q2
IRF7313
C13
1uF
1/2 Q3
IRF7313
1/2 Q3
IRF7313
R9
1K
R5
1K
V
DDQ
1/2 Q2
IRF7313
1/2 D1
BAT54A
1/2 D1
BAT54A
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P19
IRU3047CWTR
Mfr. #:
Buy IRU3047CWTR
Manufacturer:
Infineon Technologies
Description:
IC REG TRPL BUCK/LNR SYNC 20SOIC
Lifecycle:
New from this manufacturer.
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