iru3047 International Rectifier Corp., iru3047 Datasheet - Page 16

• Manufacturer Part Number: iru3047
• Description: Dual Synchronous Controller With Current Sharing Circuitry Controller
• Manufacturer: International Rectifier Corp.

IRU3047
DEMO-BOARD APPLICATION
Dual Input: 5V and 12V to 1.5V @ 12A
16
PWR OK
0V
12V
5V
L1, 1uH
L2, 1uH
C22
33uF
16V
T a n t
C20
33uF
16V
T a n t
C 4
1uF
C11
C 9
2x 330uF
Poscap
20
1
2x 47uF, 16V
Poscap
C10
C12
2
19
3
C21
1uF
C 7
0.22uF
18
4
Figure 12 - Typical application for IRU3047 configured as
10000pF
C23
1uF
D 1
C100
R103
10K
17
2-phase converter in current sharing mode.
5
D 2
IRU3047
1000pF
C101
R105
130K
16
Q4
IRF7811A
6
Q2
IRF7811A
2.15
C104
R 8
1uF
15
C103
1uF
2.15
R 3
www.irf.com
14
7
C 2
0.1uF
13
8
IRF7809A
1/2
D100
1/2
D100
2.15
R2
Q3
9
12
2.15
R 4
C 3
0.1uF
10
11
R15
4.7
C13
470pF
Q1
IRF7809A
V
R12
R 1
1K
1K
5m
5m
R13
R14
L3
6uH
L4
4.7uF
R16
4.7
V
V
C14
470pF
V
2x 470uF
Poscap
C18
C17
2.5V@12A
C24
1uF
09/09/02
Rev. 1.0
0V