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MFW28512S Datasheet(PDF) 2 Page - Crane Aerospace & Electronics.

Part # MFW28512S
Description  DC/DC CONVERTERS 28 VOLT INPUT
Download  9 Pages
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Manufacturer  CRANE [Crane Aerospace & Electronics.]
Direct Link  http://www.craneae.com
Logo CRANE - Crane Aerospace & Electronics.

MFW28512S Datasheet(HTML) 2 Page - Crane Aerospace & Electronics.

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RECOMMENDED OPERATING CONDITIONS
ABSOLUTE MAXIMUM RATINGS
TYPICAL CHARACTERISTICS
B4-4
MFW SERIES
70 WATT
DC/DC CONVERTERS
SINGLE OUTPUTS
MFW2805S
MFW2812S
MFW2815S
PARAMETER
CONDITION
MIN
TYP
MAX
MIN
TYP MAX
MIN.
TYP
MAX
UNITS
OUTPUT
FULL LOAD
4.95
5.00
5.05
11.88 12.00 12.12
14.85 15.00 15.15
VDC
VOLTAGE
OUTPUT
VIN = 19 TO 40
12.00
5.83
4.67
A
CURRENT
OUTPUT
Tc = –55°C TO +85°C
60
70
70
W
POWER
OUTPUT
FULL LOAD BW
≤2 MHz
30
50
30
50
30
50
mV p-p
RIPPLE
LINE
VIN = 19 TO 40
10
20
10
20
10
20
mV
REGULATION
LOAD
NO LOAD TO FULL
10
20
10
25
10
25
mV
REGULATION
INPUT
VOLTAGE
19
28
40
19
28
40
19
28
40
VDC
INPUT
NO LOAD
75
90
70
90
70
90
mA
CURRENT
INHIBITED
30
35
30
35
30
35
INPUT REFL.
FULL LOAD
10
25
10
25
10
25
mA p-p
RIPPLE
BW
≤10 MHz
EFFICIENCY
78
80
81
83
81
83
%
STARTUP
WITH LOW
5
10
8
10
8
10
ms
DELAY
IMPEDANCE SOURCE
Output Power
• 60 to 70 watts depending on model
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• –55°C to +125°C
Output Voltage Temperature Coefficient
• 150 ppm/°C, typical
Input to Output Capacitance
• 160 pF, typical
Isolation
• 100 megohm minimum at 500 V
Conversion Frequency
• Free run mode 245 kHz, typical
Inhibit Pin Voltage (unit enabled)
• 4.5 to 5.5 V
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
Input Voltage Range
• 19 to 40 VDC continuous (see Derating)
Case Operating Temperature (Tc)
• –55°C to +85°C full power
SYNC AND INHIBIT
DERATING OUTPUT POWER/CURRENT AND INPUT VOLTAGE
Sync In (245 to 370 kHz.)
• Duty cycle 70% min, 98% max
• Logic low 0.8 V max
• Logic high 4.5 V min
• Referenced to input common
• If sync is not used, leave unconnected
Inhibit TTL Open Collector
• Logic low (output disabled)
Inhibit pin current 1 mA max
• Referenced to input common
• Logic high (output enabled)
V =
4.5 V
Temperatures are referenced to the temperature at the converter’s baseplate
• Linearly derate output power/current from 100% at 85°C to 0% at 125°C.
• Above 105°C linearly derate steady state input voltage to 33 volts at 125°C.
• Indefinite short circuit protection is not guaranteed above 85°C case.
• Operation below an input voltage of 19 volts, including operation in MIL-
STD-704E emergency power conditions, is possible with derated output
power. See Figures 10 and 11.


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