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MOR2805SY/883 DC/DC CONVERTERS 28 VOLT INPUT
型号:   MOR2805SY/883
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描述:   DC/DC CONVERTERS 28 VOLT INPUT
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品牌   INTERPOINT [ INTERPOINT CORPORATION COMPANY ]
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100%
F
EATURES
–55°C to +125°C operation
16 to 40 VDC input
Fully isolated
Magnetic feedback
MODELS
Fixed frequency 550 kHz typ.
VDC O
UTPUT
Topology – Single Ended Forward
SINGLES
DUALS
Will withstand transients of
3.3
±3.3
up to 50 V for up to 120 msec.
5
±5
Output trim 60% to 110%
6.3
±6.3
Input and output side inhibit
9.5
±9.5
Remote sense
12
±12
15
±15
Synchronization
Parallel up to 5 units
Size (max): 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm) case U2
Output short circuit protection
Case U2 (flanged, short leads) and case Z (tabbed, leads bent down)
Up to 80 W/in
3
, 87% efficiency
are shown in the picture. Also available: flanged – leads bent down
(case V); tabbed – short leads (case Y) and leads bent up (case W).
See Section B8, cases U2, V, W, Y, and Z for dimensions and options.
Weight:
110 grams typical
Screening: Standard, ES, or 883 (Class H). See Section C2 for screening options,
see Section A5 for ordering information.
DC/DC C
ONVERTERS
28 V
OLT
I
NPUT
MOR SERIES
120 WATT
DESCRIPTION
With up to 120 watts of output power, the MOR Series™ of DC/DC
converters operates from a standard 28 volt bus and offers a wide
input range of 16 to 40 VDC. Full operation over the military temper-
ature range, –55°C to +125°C, makes the MOR Series an ideal
choice for military, aerospace, space, and other high reliability appli-
cations. In compliance with MIL-STD-704D, the converters will with-
stand transients of up to 50 volts for up to 120 milliseconds. Use
Interpoint’s FME28-461 EMI filter to pass MIL-STD-461C, CE03
requirements.
The MOR Series converters incorporate a single-ended forward
topology which uses a constant frequency Pulse Width Modulator
1.7
µΗ
Positive
Input
6
µF
6
µF
0.1
Input
Common
0.015
µF
500 V
Bias
Supply
0.015
µF
500 V
Share
Function
FET
Driver
Secondary V
CC
V
S+
600
µF
100
600
µF
100
0.5
µΗ
3:2
(PWM) current mode control design and switches at 550 kHz,
nominal. The converters also provide short circuit protection by
restricting the current to 125% of the full load output current. All
models offer two inhibits, one referenced to input common and one
referenced to output common. A remote sense function is available
on single output models.
Using the trim function, the MOR Series can provide any output from
2 to 33 VDC. For example, trimming the two 15 volt outputs of the
15 dual (MOR2815D) to 14 volts, and then stacking the outputs will
provide a 28 volt output. See Figure 11.
1.3
µΗ
0.1
µΗ
Positive
Output
Positive
Sense
Sense
Return
Output
Common
Share
Inhibit 1
UVLO
V
In
PWM
Controller
+
_
+
_
V
Ref
Trim
Secondary V
CC
Sync In
Sync Out
Sync
In / Out
Inhibit 2
F
IGURE
1: S
IMPLIFIED
S
CHEMATIC
– MOR2805S, S
INGLE
5 V
OLT
O
UTPUT
– T
YPICAL
V
ALUES
1
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