iru3046 International Rectifier Corp., iru3046 Datasheet - Page 15

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

DEMO-BOARD APPLICATION
Dual Input: 5V and 12V to 1.5V @ 16A
Rev. 1.9
09/27/02
PGood
3.3V
@ 2A
12V
2.5V
5V
C30
1uF
R13
15K
C13
47uF
C18
47uF
1uF
29.4K
R16
16.5K
C8
R21
Q3 IRLR2703
R7 1K
1uF
C29
0.1uF
C7
C24
2200pF
C34
6.8nF
R6 10
R10
1K
V
Rt
Comp1
Vcc
VccLDO
VSEN33
VOUT3
Fb3
Sync
Comp2
PGood
SS
Figure 13 - Demo-board application of IRU3046.
VCL
IRU3046
U1
Gnd
V c H 1
HDrv2
HDrv1
LDrv1
LDrv2
V c H 2
PGnd
VREF
Vp2
Fb1
Fb2
D1
BAT54S
BAT54A
BAT54A
www.irf.com
D2
D4
1uF
C9
C3
0.1uF
1uH
L2
C4
47uF
Q1
IRF7460
Q2
IRF7457
Q4
IRF7460
Q5
IRF7457
C32
47uF
C2
33uF
R5
4.7
R19
4.7
L3 2.2uH
L4 3.3uH
C26
470pF
C14
470pF
C23
1uF
V
V
1uH
L1
5m
5m
R17
R3
V
V
C31
330uF
C6
1uF
C5
330uF
C1
33uF
R8
200
R12
1K
C10,C11,C12
3x 150uF
C19,C20,C21
3x 150uF
IRU3046
C15
1uF
1.5V
@ 16A
15