INTEGRATED PRODUCTS
LX1671
Multiple Output LoadSHARE™ PWM
PRODUCTION DATA SHEET
BLOCK DIAGRAM
VS2
EO2
LPF2
FB2
RF2
LPF1
PHASE1
CS2
VTRIP
CS Comp
-
IRESET
+
ISET
RSET
PWM
RQ
SQ
Error Comp
+
-
-
+ Amplifier/
Compensation
VREF
20k
Ramp
Oscillator
UVLO
S
F FAULT S
R
S
SS1
SS2
SS3
Hiccup
ISET
+5V
VIN(12V)
VC2
CIN
HO2
LO2
PG1
+5V
L2
ESR
COUT
OUT 1
VCCL
UVLO
TEMP
16V 16V
+5V
VCC
5.5V
CSS
SS/ENABLE
Figure 3 – Block Diagram of Phase 2 Connected in LoadSHARE Mode
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
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