IRU3146
典型用途
3.3V
L1
5V
C1
47uF
1uH
C2
47uF
C12
1uF
D1
BAT54S
C3
1uF
C4
1uF
C5
1uF
V
CL
VCC
VcH1 V
OUT3
VcH2
HDrv1
C13
1uF
R1
8.5K
C14
2倍330UF
6TPB330M
Q2
1/2 IRF7910
Q3
1/2 IRF7910
D2
BAT54A
V
SEN1
C11
0.1uF
L3
3.3uH
R20
2.14K
R21
1K
2.5V @ 5A
C16
2倍330UF ，40M
6TPB330M
OCSet1
嗝
V
P2
V
REF
LDrv1
PGnd1
SYNC
R2
33K
R3
C8
4.7nF 15K
C6
27pF
R4
Rt
U1
IRU3146
V
SEN1
V
SEN2
Fb1
Fb2
Comp1
R7
2.14K
R8
1K
C9
5.6nF 8.2K
C7
PGOOD
C10
0.1uF
27pF
Comp2
HDrv2
OCSet2
R6
8.5K
PGOOD
SS1 / SD
C15
0.1uF
SS2 / SD
LDrv2
PGnd2
GND
C17
R5
2倍330UF
1K
R9
Q4 6TPB330M
L4
1.24K
1/2 IRF7910
1.8V @ 5A
2.2uH
Q5
C18
1/2 IRF7910
2倍330UF ，40M
6TPB330M
R22
1.24K
V
SEN2
R23
1K
图42 - IRU3146的典型应用。
5V到2.5V和3.3V至1.8V输入和两路独立输出。
28
www.irf.com
修订版1.1
6/25/04
