LSO28_15 Datasheet, PDF (8/18 Pages) International Rectifier – 28V Input, Single/Dual Output

LSO SERIES
28V Input, Single/Dual Output
Fig. 2 - Single Output Block Diagram
Dƒˆ‡ ₁
Dƒˆ‡ 2
Sr‡ˆ…
3 Duviv‡
4 ^{Duviv‡Ã}
Sr‡ˆ…
VW
5
Gh‡pu
EMI
Filter
UVLO &
Inhibit
9
Bias
Supply ^9
Shutdown
Latch
LSO28XXS
FET
Driver
Overcurrent
Protection
Bus
Current
Telemetry
9 4.4V
Reg
9
8h†rà 6
B…‚ˆq
9
9
+
3:0
-
Oscillator
Ramp
Gen.
Sample &
Hold
Soft Start
Feedback
Trigger
Error
Amplifier
Ref &
S.S.
OVP
13 Pˆ‡ƒˆ‡
12 Pˆ‡ƒˆ‡
7 ^{Dƒˆ‡Ã}
8ˆ……r‡
Uryr€r‡…’
10 6HQVH
9 Tr†r
8 ^{Pˆ‡ƒˆ‡Ã}
6qwˆ†‡
11 PWQÃ6qw
Fig. 3 - Dual Output Block Diagram
Dƒˆ‡ 1
DSrƒ‡ˆˆ‡… 2
Duviv‡ 3
Duviv‡Ã
Sr‡ˆ…
4
VGhW‡pu ₅
8h†rà 6
B…‚ˆq
LSO28XXD
EMI
Filter
UVLO &
Inhibit
9
Bias
Supply ^9
Shutdown
Latch
9
FET
Driver
9
Overcurrent
Protection
Bus
Current
Telemetry
9 4.4V
Reg
9
Error
Amplifier
2XW
2XW
Oscillator
+
3:0
-
Ramp
Gen.
Sample &
Hold
Soft Start
Feedback
Trigger
Ref &
S.S.
-Out
OVP
5V
Reg
+Out
OVP
13 Pˆ‡ƒˆ‡
12 ^{PSrˆ‡‡ˆƒ…ˆ‡}
11 Pˆ‡ƒˆ‡
7 ^{D8Urˆƒy…rˆ…r€‡Ãr‡‡…’}
8
Pˆ‡ƒˆ‡Ã
6qwˆ†‡
9 PWQÃ6qw
10 PWQÃ6qw
8
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