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LX1571 Datasheet(PDF) 5 Page - Microsemi Corporation

Part # LX1571
Description  PHASE MODULATED AC SYNCHRONOUS SECONDARY-SIDE CONTROLLER
PDF  12 Pages
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Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

LX1571 Datasheet(HTML) 5 Page - Microsemi Corporation

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PHASE MODULATED AC SYNCHRONOUS SECONDARY-SIDE CONTROLLER
LX1570/1571
PRODUCT DA T ABOOK 1996/1997
5
Copyright © 1997
Rev. 0.9.3
1/97
P RELIMINAR Y D AT A S HEET
APPLICA TION INFORMA TION
V
OUT (-)
V
OUT (+)
C9
1500µF
L1
10µH (PE53700)
D1 1/2
D1 2/2
MBR2545CT
C2
0.1µF
D4
1N4148
R4
47
AC(+)
AC(-)
20-30V, 100-150kHz
Secondary Transformer
Q1
IRLZ44
T2
See Note 1
OUT DRV
U1
LX1570
8
C8
1000pF
C5
1µF
C10
1500µF
C11
1500µF
C12
1500µF
MBR2545CT
R5
0.02, 5W
3.3V / 7A
See Note 2
C1
0.1µF, 50V
D8
1N4937
300, 2W
R2
100kHz - 150kHz
20V-30V
1
7
2
6
3
5
4
V
CC
C
T
GND
C.S.
COMP
V
FB
S.S.
C4
0.047µF
R11
1.1k
R15
1M
V
IN (17 to 20V)
R6
324, 1%
R7
1k, 1%
R10
5k
1%
FIGURE 1 — THE LX1570 IN A TYPICAL 3.3V / 7A SECONDARY-SIDE POWER SUPPLY APPLICATION
Note 1. T2 Core = RM4Z
Np = 25T #28AWG
Ns = 25T #28AWG
2. For further information on PE53700 and PE64978,
contact Pulse Engineering at (619) 674-8100.



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