iru3046 International Rectifier Corp., iru3046 Datasheet - Page 14

• Manufacturer Part Number: iru3046
• Description: Dual Synchronous Pwm Controller With Current Sharing Circuitry And Ldo Controller
• Manufacturer: International Rectifier Corp.

IRU3046
TYPICAL APPLICATION
14
PGood
@ 2A
3.3V
1.8V
12V
5V
33uF
47uF
C1
C6
47uF
C7
C5
1uF
Figure 12 - Typical application for IRU3046 configured for DDR memory application.
1uH
L1
Q1
IRLR2703
442
R1
1uF
3900pF
R2
1K
C3
5600pF
C8
C9
16.2K
1uF
10K
C10
0.1uF
R3
R4
C4
V
Rt
Sync
Comp1
Vcc
VccLDO
V
Fb3
Comp2
PGood
SS
SEN33
OUT3
V
CL
IRU3046
VcH1
U1
Gnd
www.irf.com
VcH2
HDrv2
HDrv1
LDrv1
LDrv2
PGnd
V
Vp2
Fb1
Fb2
REF
C13
1uF
1/2 of D1
BAT54A
1/2 of D1
BAT54A
R9
1K
R5
1K
1/2 of Q2
IRF7313
1/2 of Q2
IRF7313
1/2 of Q3
IRF7313
1/2 of Q3
IRF7313
V
DDQ
C17
2x 150uF
C14
150uF
4.7uH
5.6uH
L2
L3
R7
1K
R8
1K
C12
330uF
C16
330uF
V
2.5V @ 4A
V
1.25V @ 4A
DDQ
TT
09/27/02
Rev. 1.9