iru3047 International Rectifier Corp., iru3047 Datasheet - Page 15

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

TYPICAL APPLICATION
Rev. 1.0
09/09/02
PGood
3.3V
@ 2A
12V
1.8V
5V
47uF
33uF
C1
C6
47uF
C7
C5
1uF
Figure 11 - Typical application for IRU3047 configured for DDR memory application.
1uH
L1
Q1
IRLR2703
442
R1
1uF
3900pF
5600pF
R2
1K
C3
C8
C9
16.2K
1uF
10K
C10
0.1uF
R3
C4
R4
Comp1
Vcc
V
Fb3
Comp2
PGood
SS
OUT3
V
CL
IRU3047
VcH1
U1
Gnd
www.irf.com
VcH2
HDrv2
HDrv1
LDrv1
LDrv2
PGnd
V
Vp2
Fb1
Fb2
REF
1/2 D1
BAT54A
C13
1uF
1/2 D1
BAT54A
R9
1K
R5
1K
1/2 Q2
IRF7313
1/2 Q3
IRF7313
1/2 Q3
IRF7313
1/2 Q2
IRF7313
C14
150uF
V
C17
2x 150uF
DDQ
4.7uH
5.6uH
442
L3
L2
R7
V
IRU3047
R8
1K
C12
330uF
C16
330uF
V
V
DDQ
TT
= 1.25V
@ 4A
= 2.5V
@ 4A
15