LX1571MYT データシートの表示（PDF） - Microsemi Corporation
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LX1571MYT Datasheet PDF : 12 Pages
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PRODUCT DATABOOK 1996/1997
PHASE MODULATED AC SYNCHRONOUS SECONDARY-SIDE CONTROLLER
PR E L I M I N A RY D ATA S H E E T
LX1570/1571
APPLICATION INFORMATION
100kHz - 150kHz
20V-30V
R2
300, 2W
AC(+)
D8
1N4937
20-30V, 100-150kHz
Secondary Transformer
Q1
IRLZ44
AC(-)
C1
0.1µF, 50V
D1 1/2
L1
10µH (PE53700)
See Note 2
VOUT (+)
T2
See Note 1
MBR2545CT
R5
0.02, 5W
D1 2/2
MBR2545CT
C10
1500µF
C12
1500µF 3.3V / 7A
C9
1500µF
C11
1500µF
VOUT (-)
D4
1N4148
C2
0.1µF
VIN (17 to 20V)
R6
324, 1%
R7
1k, 1%
R15 R11
R4
1M 1.1k
47
U1
LX1570
1 S.S.
CT 8
2 VFB
VCC 7
3 COMP OUT DRV 6
C5
1µF
4 C.S.
GND 5
C8
1000pF
R10
5k
1%
C4
0.047µF
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.
FIGURE 1 — THE LX1570 IN A TYPICAL 3.3V / 7A SECONDARY-SIDE POWER SUPPLY APPLICATION
Copyright © 1997
Rev. 0.9.3 1/97
5
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