LX1672 Datasheet, PDF (7/20 Pages) Microsemi Corporation – Multiple Output LoadSHARE PWM

LX1672
®
Multiple Output LoadSHARE™ PWM
TM
PRELIMINARY DATA SHEET
BLOCK DIAGRAM
VS2
EO2
LPF2
FB2
RF2
LPF1
PHASE1
CS2
V_TRIP
CS Comp
-
I_RESET
+
I_SET
R_SET
PWM
RQ
SQ
Error Comp
+
-
-
+ _Amplifier/
Compensation
V_REF
20k
Ramp
Oscillator
UVLO
S
F FAULT S
R
S
SS1
SS2
Hiccup
I_SET
+5V
VC2
HO2
LO2
PG2
+5V
VCCL
UVLO
TEMP
16V 16V
+5V
VCC
5.5V
Vin
C_IN
V out 2
L2
ESR
C_OUT
SS
CSS
DIS 2
Figure 3– Block Diagram of Phase 2 Connected in LoadSHARE Mode
Note: With the MLPQ package there is only one PGX output (PG1 and PG2 are common)
Copyright © 2000
Rev. 0.3m, 2005-04-12
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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