LX1671
I N T E G R A T E D
P R O D U C T S
Multiple Output LoadSHARE™ PWM
P
RODUCTION
D
ATA
S
HEET
BLOCK DIAGRAM
WWW .
Microsemi
.C
OM
R
SET
CS2
CS Comp
-
I
RESET
I
SET
+5V
V
IN
(12V)
PWM
+
VS2
V
TRIP
I
SET
R
S
Q
Q
VC2
C
IN
HO2
L2
ESR
C
OUT
OUT 1
EO2
LPF2
LO2
PG1
+5V
Error Comp
+
-
FB2
+
Amplifier/
Compensation
V
REF
RF2
20k
Ramp
Oscillator
UVLO
Hiccup
VCCL
-
16V
UVLO
16V
+5V
LPF1
VCC
S
F
FAULT
S
R
S
SS1
SS2
SS3
TEMP
5.5V
P
HASE
1
SS/ENABLE
CSS
Figure 3
– Block Diagram of Phase 2 Connected in LoadSHARE Mode
B
LOCK
D
IAGRAM
B
LOCK
D
IAGRAM
Copyright
©
2000
Rev. 1.0a, 2004-06-14
Microsemi
Integrated Products, Power Management
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 7
MICROSEMI [ MICROSEMI CORPORATION ]
