Data Sheet - Interpoint

Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
16 to 50 volts input – 25 Watt
Features
• 16 to 50 volt input
• Up to 87% efficiency, 42 W/in3
• Undervoltage lockout
• -55°C to +125°C operation
models
• Fully isolated
Output Voltage (V)
• Magnetic feedback
• Fixed frequency, 500 kHz typical
• 65 volts for up to 1 sec. transient
protection
• Inhibit and sync function
• Output short circuit protection
SINGLE
DUAL
1.8
±5
2.5
±7
3.3
±12
5
±15
5.7
12
15
28
description
The Interpoint® MFK Series™ of high frequency dc-dc converters
offers a wide input voltage range of 16 to 50 volts and up
to 25 watts of output power. The converters are capable of
withstanding transients of up to 65 volts for up to one second.
The package is a hermetically sealed, welded metal case.
Flanged and non-flanged models are available.
Converter Design
The MFK converters are switching regulators that use a quasisquare wave, single-ended forward converter design with a
constant switching frequency of 500 kHz, typical. Isolation
between input and output circuits is provided with transformers in
the forward path and in the feedback control loop.
Higher Power Density
The MFK Series offers a new standard of performance for small
size and high power density. At just 0.360 inch high and a total
footprint of 1.7 in2, this low profile package offers a total power
density of up to 42 watts per cubic inch.
Low Noise, High Audio Rejection
The MFK converters current mode control system provides
excellent dynamic response and noise rejection. Audio rejection
is typically 50 dB. Output voltage response for a 50% to 100%
step load transient is as low as 4% with a 400 µs recovery time.
Inhibit Function
MFK converters provide an inhibit terminal that can be used to
disable internal switching, resulting in no output and very low
quiescent input current. The converter is inhibited when the
inhibit pin is pulled below 0.8 volts. The converter is enabled
when the pin, which is internally connected to a pull-up current
source, is left unconnected or is connected to an open-collector
gate. The open circuit voltage associated with the inhibit pin is
8.5 to 12 V. In the inhibit mode, a maximum of 4 mA must be
sunk from the inhibit pin. See Table 5 on page 5 for more
information.
Synchronization
A synchronization feature is included with the MFK Series that
allows the user to match the switching frequency of the converter
to the frequency of a system clock. Synchronization allows
the user to adjust the nominal 500 kHz operating frequency to
any frequency within the range of 450 kHz to 550 kHz. This is
initiated by applying an active high input of the desired frequency
to the sync pin. See Table 5 on page 5 for more information.
Short Circuit Protection
MFK Series converters provide short circuit protection by
restricting the output current to approximately 115% of the full
load output current.
Undervoltage Lockout
Undervoltage lockout with hysteresis prevents the converters
from operating below approximately 15 volts input voltage to
keep system current levels smooth, especially during initialization
or re-start operations.
Crane Aerospace & Electronics
Power Solutions – Interpoint Products
10301 Willows Rd. NE, Redmond, WA 98052
+1 425-882-3100 • power@crane-eg.com
www.craneae.com/interpoint
Page 1 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Positive
Output
Positive
Input
Output
Common
Input
Common
Bias
Supply
Inhibit
FET
Driver
UVLO
VIn
VS+
Secondary VCC
+
_
PWM
Controller
+
_
VRef
Secondary VCC
Sync In
Figure 1: MFK Single Block Diagram
Positive
Output
Positive
Input
Output
Common
Input
Common
Bias
Supply
Inhibit
VIn
FET
Driver
UVLO
+
_
PWM
Controller
+
_
VRef
Secondary VCC
Sync In
Figure 2: MFK Dual Block Diagram
www.craneae.com/interpoint
Negative
Output
VS+
Secondary VCC
Page 2 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Pin Out
Pin
Single Output
MFK2828S
Dual Output
1
Inhibit
Inhibit
Inhibit
2
Output Common
Positive Output
Positive Output
3
Positive Output
No Connection
Output Common
4
Sync In
Output Common
Negative Output
5
Case Ground
Sync In
Sync In
6
Input Common
Case Ground
Case Ground
7
Positive Input
Input Common
Input Common
Positive Input
Positive Input
8
—
Table 1: Pin Out
Inhibit
Pins not in Use
Leave unconnected
Sync
Leave unconnected
Table 2: Pins Not in Use
Dot on top of cover
indicates pin one.
1
2
3
Dot on top of cover
indicates pin one.
4
1
BOTTOM VIEW
SINGLES EXCEPT 28
NON-FLANGED OR FLANGED
7
6
2
3
4
5
BOTTOM VIEW
28 SINGLE AND ALL DUALS
NON-FLANGED OR FLANGED
5
8
7
6
Dotted line outlines flanged package option.
Dotted line outlines flanged package option.
See Figure 26 on page 16 and Figure 28 on page 18 for dimensions.
See Figure 27 on page 17 and Figure 29 on page 19 for dimensions.
Figure 3: MFK Single Pin Out (except 28S)
Figure 4: MFK Dual Pin Out (includes 28S)
www.craneae.com/interpoint
Page 3 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
model numbering key
Base Model
Input Voltage
MFK
28 12
SMD Numbers
D
F / 883
Output Voltage
(R = decimal point, 3R3 = 3.3 Vout)
Number of Outputs
(S = single, D = dual)
Case Option
(Non-flanged case has no designator in
this position)
Screening
(Standard screening has no designator
in this position.)
Figure 5: Model Numbering Key
Standard Microcircuit Drawing
(SMD)
MFK Similar Part
5962-1421001HXC IN PROCESS
MFK281R8S/883
5962-1421002HXC IN PROCESS
MFK282R5S/883
5962-1421003HXC IN PROCESS
MFK283R3S/883
5962-1421004HXC IN PROCESS
MFK2805S/883
5962-1421005HXC IN PROCESS
MFK285R7S/883
5962-1421006HXC IN PROCESS
MFK2812S/883
5962-1421007HXC IN PROCESS
MFK2815S/883
5962-1421008HTC IN PROCESS
MFK2828S/883
5962-1421101HXC IN PROCESS
MFK2805D/883
5962-1421102HXC IN PROCESS
MFK2807D/883
5962-1421103HXC IN PROCESS
MFK2812D/883
5962-1421104HXC IN PROCESS
MFK2815D/883
The SMD number shown is for Class H screening, non-flanged. To
indicate the flanged case option change the “X” to “Z” In the SMD
number (“T” to “U” for 28 single). For exact specifications for an SMD
product, refer to the SMD drawing. SMDs can be downloaded from:
http://www.landandmaritime.dla.mil/programs/smcr
Table 3: SMD Cross Reference
To
Category
Base Model and
Input Voltage
Options
MFK28
model Number Options
determine the model number enter one option from
each category in the form below.
Output Voltage 1
Number of
Outputs 2
Case Options 3
Screening 4
1R8, 2R5, 3R3,
05, 5R7, 12, 15, 28
S
(non-flanged, leave blank)
(standard, leave blank)
05, 07, 12, 15
D
F (flanged)
ES
883
Fill in for
Model #
MFK28
/
Notes
1. Output Voltage: An R indicates a decimal point. 1R8 is 1.8 volts out. The values of 1.8, 2.5, 3.3 and 5.7 volts are only available in single output models.
2. Number of Outputs: S is a single output and D is a dual output.
3. Case Options: For the standard case, Figure 26 on page 16 or Figure 27 on page 17, leave the case option blank. For the flanged case option, Figure 28 on
page 18 or Figure 29 on page 19, insert the letter F in the Case Option position.
4. Screening: For standard screening leave the screening option blank. For other screening options, insert the desired screening level. For more information see
Table 11 on page 20 and Table 12 on page 21.
Table 4: Model Number Options
www.craneae.com/interpoint
Page 4 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Table 5: Operating Conditions, All Models, 25°C case, 28 Vin, 100% load, unless otherwise specified.
MFK Series
All Models
PARAMETER
CONDITIONS
Lead Soldering Temperature
1
10 seconds max.
STORAGE TEMPERATURE 1
CASE OPERATING
FULL POWER
TEMPERATURE
ABSOLUTE
DERATING OUTPUT POWER/CURRENT 1
LINEARLY
ESD RATING
1
1
TYP
pin to case except case pin
—
300
°C
—
+150
°C
-55
—
+125
-55
—
+135
°C
From 100% at 125°C to 0% at 135°C
500 VDC at 25°C
Undervoltage lockout
2
UNITS
—
2000 - 3999
Class 2
ISOLATION: input to output or any
MAX
-65
MIL-STD-883, Method 3015
MIL-PRF-38534, 3.9.5.8.2
CURRENT LIMIT
MIN
% OF FULL LOAD
AUDIO REJECTION 1
V
100
—
—
Megohms
—
15
—
V
—
115
—
%
—
50
—
dB
—
570
kHz
CONVERSION FREQUENCY
FREE RUN -55°C TO +125°C
430
SYNCHRONIZATION
INPUT FREQUENCY
450
—
550
kHz
DUTY CYCLE 1
40
—
60
%
ACTIVE LOW
—
—
0.8
ACTIVE HIGH 1
4.5
—
5.0
REFERENCED TO
INPUT COMMON
IF NOT USED
INHIBIT ACTIVE LOW (OUTPUT DISABLED)
Do not apply a voltage to the inhibit pin
4
LEAVE UNCONNECTED
inhibit pin pulled low 3
INHIBIT PIN SOURCE
CURRENT 1
—
—
0.8
V
—
—
4
mA
REFERENCED TO
INHIBIT ACTIVE HIGH (OUTPUT ENABLED)
V
INPUT COMMON
INHIBIT PIN CONDITION
OPEN COLLECTOR OR
Do not apply a voltage to the inhibit pin 4
UNCONNECTED
OPEN PIN VOLTAGE
1
8.5
—
12
V
For mean time between failures (MTBF) contact Applications Engineering
powerapps@crane-eg.com +1-425-882-3100 option 7
Notes
1. Guaranteed by qualification test and/or analysis. Not an in-line test.
2. Dual outputs: The over-current limit will trigger when the sum of
the currents from both outputs reaches 115% (typical value) of the
maximum rated “total” current of both outputs.
www.craneae.com/interpoint
3. Tested with inhibit pin pulled to ground.
4. An external inhibit interface should be used to pull the inhibit low or
leave it floating. The inhibit pin can be left unconnected if not used.
Page 5 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Table 6: Electrical Characteristics -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified.
single output models
PARAMETER
MFK281R8S
CONDITIONS
OUTPUT VOLTAGE
OUTPUT CURRENT 2
OUTPUT POWER
VIN = 16 TO 50
2
VIN = 16 TO 50
OUTPUT RIPPLE
10 kHz - 20 MHz
LOAD REGULATION
INPUT VOLTAGE
MFK283R3S
MAX
MIN
TYP
MAX
MIN
TYP
MAX
1.74
1.80
1.86
2.42
2.50
2.58
3.20
3.30
3.40
V
—
—
5.56
—
—
5.0
—
—
4.55
A
W
—
—
10
—
—
12.5
—
—
15
—
30
60
—
30
60
—
25
60
—
35
80
—
35
80
—
30
80
VIN = 16 TO 50
—
5
20
—
5
20
—
5
20
mV
NO LOAD TO FULL
—
10
25
—
5
25
—
5
25
mV
CONTINUOUS
16
28
50
16
28
50
16
28
50
V
V
sec.1
NO LOAD TO FULL
TRANSIENT 1
—
—
65
—
—
65
—
—
65
INPUT CURRENT
NO LOAD
—
25
50
—
25
50
—
25
50
INHIBITED
—
2.5
4
—
2.5
4
—
2.5
4
10 kHz - 20 MHz
—
30
75
—
30
80
—
30
80
TC = 25°C
69
72
—
73
76
—
76
79
—
TC = -55°C TO +125°C
67
—
—
71
—
—
74
—
—
INPUT RIPPLE CURRENT
EFFICIENCY
UNITS
TYP
TC = 25°C
TC = -55°C TO +125°C
LINE REGULATION
MFK282R5S
MIN
mV p-p
mA
mA p-p
%
LOAD FAULT 3, 4
POWER DISSIPATION
—
—
8.5
—
—
8.5
—
—
8.5
W
SHORT CIRCUIT
RECOVERY 1
—
—
20
—
—
20
—
—
20
ms
STEP LOAD RESPONSE 5, 6
TRANSIENT
—
125
200
—
125
200
—
125
200
mV pk
50% - 100% - 50%
RECOVERY
—
­200
400
—
100
300
—
200
300
µs
STEP LINE Response
1, 5, 6
TRANSIENT
—
—
350
—
—
350
—
—
350
mV pk
16 - 50 - 16 V
RECOVERY
—
0.5
1
—
0.5
1
—
0.5
1
ms
START-UP 7
DELAY
—
—
25
—
—
25
—
—
25
ms
FULL LOAD
OVERSHOOT 1
—
—
50
—
—
50
—
—
50
mV pk
CAPACITIVE LOAD 1
NO EFFECT ON DC
TC = 25°C
PERFORMANCE
—
—
2000
—
—
2000
—
—
2000
µF
Notes
1. Guaranteed by qualification test and/or analysis. Not an in-line test.
2. A minimum load of 20% is recommended.
3.Short circuit measured with 1% 10 milliohm resistive load.
4. Indefinite short circuit protection not guaranteed above 125°C.
www.craneae.com/interpoint
5. Step transition time >10 µs.
6. Recovery and startup times are measured from application of the transient or
change in condition to the point at which VOUT is within 1% of final value. CL = 0.
7. Tested on release from inhibit.
Page 6 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Table 7: Electrical Characteristics -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified.
single output models
PARAMETER
MFK2805S
CONDITIONS
OUTPUT
OUTPUT POWER 2
OUTPUT RIPPLE
10 kHz - 20 MHz
LINE REGULATION
LOAD REGULATION
INPUT VOLTAGE
MFK2812S
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
4.85
5.00
5.15
5.52
5.70
5.87
11.76
12.00
12.24
VIN = 16 TO 50
TC = 25°C
OUTPUT VOLTAGE
CURRENT 2
MFK285R7S
UNITS
V
—
—
4.0
—
—
4.0
—
—
2.08
A
VIN = 16 TO 50
—
—
20
—
—
22.8
—
—
25
W
—
40
80
—
40
80
—
35
80
TC = -55°C TO +125°C
—
—
100
—
—
100
—
—
100
VIN = 16 TO 50
—
5
20
—
5
20
—
5
20
mV
NO LOAD TO FULL
—
5
25
—
5
25
—
5
20
mV
CONTINUOUS
16
28
50
16
28
50
16
28
50
V
—
—
65
—
—
65
—
—
65
V
sec.1
NO LOAD TO FULL
TRANSIENT 1
INPUT CURRENT
NO LOAD
—
25
50
—
25
50
—
20
50
INHIBITED
—
2.4
4
—
2.4
4
—
2.5
4
mV p-p
mA
INPUT RIPPLE CURRENT
10 kHz - 20 MHz
—
40
85
—
40
85
—
45
90
EFFICIENCY
TC = 25°C
79
82
—
79
82
—
83
86
—
77
—
—
77
—
—
81
—
—
LOAD FAULT 3, 4
TC = -55°C TO +125°C
POWER DISSIPATION
—
6
8.5
—
6
8.5
—
6
8.5
W
SHORT CIRCUIT
RECOVERY 1
—
—
20
—
—
20
—
—
20
ms
STEP LOAD RESPONSE 5, 6
TRANSIENT
—
—
400
—
—
400
—
350
500
mV pk
50% - 100% - 50%
RECOVERY
—
—
300
—
—
300
—
300
500
µs
TRANSIENT
—
—
500
—
—
570
—
—
1300
mV pk
16 - 50 - 16 V
RECOVERY
—
0.5
1
—
0.5
1
—
0.5
1
ms
START-UP 7
DELAY
—
—
25
—
—
25
—
—
25
ms
FULL LOAD
CAPACITIVE LOAD 1
OVERSHOOT 1
—
0
50
—
0
50
—
0
120
mV pk
NO EFFECT ON DC
TC = 25°C
PERFORMANCE
—
—
2000
—
—
2000
—
—
2000
µF
STEP LINE Response
1, 5, 6
Notes
1. Guaranteed by qualification test and/or analysis. Not an in-line test.
2. A minimum load of 20% is recommended.
3.Short circuit measured with 1% 10 milliohm resistive load.
4. Indefinite short circuit protection not guaranteed above 125°C
www.craneae.com/interpoint
mA p-p
%
5. Step transition time >10 µs.
6. Recovery and startup times are measured from application of the transient or
change in condition to the point at which VOUT is within 1% of final value. CL = 0.
7. Tested on release from inhibit.
Page 7 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Table 8: Electrical Characteristics -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified.
single output models
PARAMETER
MFK2815S
CONDITIONS
MAX
MIN
TYP
MAX
14.70
15.00
15.30
27.16
28.00
28.84
V
—
—
1.67
—
—
0.89
A
OUTPUT POWER
VIN = 16 TO 50
—
—
25
—
—
25
W
—
40
80
—
80
150
TC = -55°C TO +125°C
—
50
100
—
100
200
VIN = 16 TO 50
—
5
20
—
150
280
mV
NO LOAD TO FULL
—
5
20
—
150
280
mV
CONTINUOUS
16
28
50
16
28
50
V
V
VIN = 16 TO 50
2
OUTPUT RIPPLE
TC = 25°C
10 kHz - 20 MHz
LINE REGULATION
LOAD REGULATION
INPUT VOLTAGE
sec.1
NO LOAD TO FULL
TRANSIENT 1
—
—
65
—
—
65
INPUT CURRENT
NO LOAD
—
20
50
—
30
55
INHIBITED
—
2.5
4
—
2.5
4
INPUT RIPPLE CURRENT
10 kHz - 20 MHz
—
50
110
—
50
100
EFFICIENCY
TC = 25°C
84
87
—
81
84
—
82
—
—
80
—
—
—
6
8
—
6
8.5
TC = -55°C TO +125°C
LOAD FAULT 3, 4
UNITS
TYP
OUTPUT VOLTAGE
OUTPUT CURRENT 2
MFK2828S
MIN
POWER DISSIPATION
1
mV p-p
mA
mA p-p
%
W
SHORT CIRCUIT
RECOVERY
—
—
20
—
—
20
ms
STEP LOAD RESPONSE 5, 6
TRANSIENT
—
400
600
—
900
1200
mV pk
50% - 100% - 50%
RECOVERY
—
300
500
—
500
600
µs
1, 5, 6
TRANSIENT
—
—
1500
—
—
2800
mV pk
16 - 50 - 16 V
RECOVERY
—
0.5
1
—
0.5
1
ms
START-UP 7
DELAY
—
—
25
—
—
25
ms
FULL LOAD
OVERSHOOT 1
—
0
150
—
0
280
mV pk
CAPACITIVE LOAD 1
NO EFFECT ON DC
TC = 25°C
PERFORMANCE
—
—
2000
—
—
1000
µF
STEP LINE Response
Notes
1. Guaranteed by qualification test and/or analysis. Not an in-line test.
2. A minimum load of 20% is recommended.
3.Short circuit measured with 1% 10 milliohm resistive load.
4. Indefinite short circuit protection not guaranteed above 125°C
www.craneae.com/interpoint
5. Step transition time >10 µs.
6. Recovery and startup times are measured from application of the transient or
change in condition to the point at which VOUT is within 1% of final value. CL = 0.
7. Tested on release from inhibit.
Page 8 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Table 9: Electrical Characteristics -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified.
DUAL output models
MFK2805D
MFK2807D
UNITS
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
OUTPUT VOLTAGE
+ VOUT
4.85
5.00
5.15
6.86
7.00
7.14
4.82
5.00
5.18
6.83
7.00
7.17
EITHER OUTPUT
—
±2.0
2.80
—
±1.5
2.10
VIN = 16 to 50 V
TOTAL OUTPUT
—
—
4.0
—
—
3.0
OUTPUT POWER 2, 3
EITHER OUTPUT
—
±10
18
—
±10.5
18.9
VIN = 16 to 50 V
TOTAL OUTPUT
—
—
20
—
—
21
—
—
80
—
—
70
±VOUT, 10 kHz - 20 MHz
TC = 25°C
TC = -55°C to +125°C
—
—
90
—
—
80
+ VOUT
—
5
20
—
5
20
VIN = 16 to 50 V
- VOUT
—
20
100
—
20
100
+ VOUT
—
5
20
—
5
20
NL to Full, Balanced
- VOUT
—
35
250
—
50
250
TC = 25°C
—
—
360
—
—
400
CONTINUOUS
16
28
50
16
28
50
V
TRANSIENT 1 sec.1
—
—
65
—
—
65
V
NO LOAD
—
30
50
—
30
50
INHIBITED
—
2.5
4
—
2.5
4
10 kHz - 20 MHz
—
35
70
—
35
70
TC = 25°C
OUTPUT CURRENT 2, 3
OUTPUT RIPPLE
LINE REGULATION
LOAD REGULATION
CROSS REGULATION 4
INPUT VOLTAGE
INPUT CURRENT
INPUT RIPPLE CURRENT
EFFICIENCY
- VOUT
V
A
W
mV p-p
mV
mV
mV
mA
mA p-p
78
81
—
81
83
—
TC = -55°C to +125°C
76
—
—
79
—
—
POWER DISSIPATION
—
6
8.5
—
6
8
W
Short Circuit
RECOVERY 1
—
15
20
—
15
20
ms
STEP LOAD RESPONSE 7, 8, 9
TRANSIENT ±Vout
—
100
450
—
125
500
mV pk
RECOVERY
—
200
500
—
200
500
µs
TRANSIENT
—
—
500
—
—
700
mV pk
RECOVERY
—
0.5
1
—
0.5
1
ms
DELAY
—
—
20
—
—
20
ms
OVERSHOOT 1
—
0
50
—
0
70
mV pk
—
—
1000
—
—
1000
µF
LOAD FAULT 5, 6
50%-100%-50%, Balanced Loads
STEP LINE RESPONSE 1, 7, 9
±Vout , VIN = 16 - 50 - 16 V
START-UP 10
CAPACITIVE LOAD
TC = 25°C
1, 11
NO EFFECT ON DC
PERFORMANCE
Notes
1. Guaranteed by qualification test and/or analysis. Not an in-line test.
2. Up to 70% of the total output power is available from either output providing
the opposite output is simultaneously carrying 30% of the total output power.
3. Recommended minimum load is 20% total load (sum of both outputs).
4.Effect on –Vout for the following conditions:
+Po = 30% to 70%; - Po = 70% to 30%
5.Short circuit measured with 1% 10 milliohm resistive load.
6.Indefinite short circuit protection not guaranteed above 125°C (case)
www.craneae.com/interpoint
%
7. Recovery and startup times are measured from application of the transient
or change in condition to the point at which VOUT is within 1% of final value.
CL = 0.
8.Response of either output with the opposite output held at half of the total
output power.
9.Step transition time >10 µs.
10. Tested on release from inhibit.
11. Each output.
Page 9 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Table 10: Electrical Characteristics -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified.
DUAL output models
PARAMETER
MFK2812D
MFK2815D
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
+ VOUT
11.76
12.00
12.24
14.70
15.00
15.30
11.70
12.00
12.30
14.63
15.00
15.38
EITHER OUTPUT
—
±1.04
1.45
—
±0.833
1.16
VIN = 16 to 50 V
TOTAL OUTPUT
—
—
2.08
—
—
1.66
OUTPUT POWER 2, 3
EITHER OUTPUT
—
±12.5
22.5
—
±12.5
22.5
VIN = 16 to 50 V
TOTAL OUTPUT
—
—
25
—
—
25
TC = 25°C
—
—
90
—
—
90
—
—
90
—
—
90
+ VOUT
+ VOUT
OUTPUT VOLTAGE
OUTPUT CURRENT 2, 3
OUTPUT RIPPLE
±VOUT, 10 kHz - 20 MHz
LINE REGULATION
VIN = 16 to 50 V
LOAD REGULATION
NL to Full, Balanced
CROSS REGULATION 4
INPUT VOLTAGE
INPUT CURRENT
- VOUT
TC = -55°C to +125°C
UNITS
V
A
W
mV p-p
—
5
20
—
5
20
- VOUT
—
20
150
—
20
150
—
5
20
—
5
20
- VOUT
TC = 25°C
—
60
250
—
100
250
—
—
700
—
—
800
CONTINUOUS
16
28
50
16
28
50
V
TRANSIENT 1 sec.1
—
—
65
—
—
65
V
NO LOAD
—
30
50
—
30
50
INHIBITED
—
2.5
4
—
2.5
4
INPUT RIPPLE CURRENT
10 kHz - 20 MHz
—
50
100
—
40
100
EFFICIENCY
TC = 25°C
mV
mV
mV
mA
mA p-p
82
85
—
83
86
—
TC = -55°C to +125°C
80
—
—
81
—
—
POWER DISSIPATION
—
5
8
—
5
8
W
Short Circuit
RECOVERY 1
—
15
20
—
15
20
ms
STEP LOAD RESPONSE 7, 8, 9
TRANSIENT ±Vout
—
350
600
—
400
650
mV pk
RECOVERY
—
250
550
—
250
550
µs
TRANSIENT
—
—
1300
—
—
1500
mV pk
RECOVERY
—
0.5
1
—
0.5
1
ms
DELAY
—
—
20
—
—
20
ms
OVERSHOOT 1
—
0
120
—
0
150
mV pk
—
—
1000
—
—
1000
µF
LOAD FAULT 5, 6
50%-100%-50%, Balanced Loads
STEP LINE RESPONSE 1, 7, 9
±Vout , VIN = 16 - 50 - 16 V
START-UP 10
CAPACITIVE LOAD
TC = 25°C
1, 11
NO EFFECT ON DC
PERFORMANCE
Notes
1. Guaranteed by qualification test and/or analysis. Not an in-line test.
2. Up to 70% of the total output power is available from either output providing
the opposite output is simultaneously carrying 30% of the total output power.
3. Recommended minimum load is 20% total load (sum of both outputs).
4.Effect on –Vout for the following conditions:
+Po = 30% to 70%; - Po = 70% to 30%
5.Short circuit measured with 1% 10 milliohm resistive load.
6.Indefinite short circuit protection not guaranteed above 125°C (case)
www.craneae.com/interpoint
%
7. Recovery and startup times are measured from application of the transient
or change in condition to the point at which VOUT is within 1% of final value.
CL = 0.
8.Response of either output with the opposite output held at half of the total
output power.
9.Step transition time >10 µs.
10. Tested on release from inhibit.
11. Each output.
Page 10 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Typical Performance Plots: 25°C case, 28 Vin, 100% load, free run, unless
For reference only, not guaranteed specifications.
MFK2805S Step Load 100% - 50%
MFK2805S Step Load 50% - 100%
Figure 6
Figure 7
MFK2805S Step Line 16 - 50 Volts
MFK2805S Step Line 50 - 16 Volts
Figure 8
www.craneae.com/interpoint
otherwise specified.
Figure 9
Page 11 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Typical Performance Plots: 25°C case, 28 Vin, 100% load, free run, unless
For reference only, not guaranteed specifications.
otherwise specified.
75
16 V
EFFICIENCY (%)
70
42 V
28 V
50 V
65
60
55
2
4
6
WATTS
8
20%
10
100%
OUTPUT POWER
MFK2805S Start-up 20% Load
MFK281R8S Efficiency
Figure 10
Figure 11
80
85
16 V
70
80
28 V
42 V
EFFICIENCY (%)
EFFICIENCY (%)
75
50 V
65
60
55
16 V
28 V
75
42 V
50 V
70
65
5
10
15
WATTS
20
20%
60
25
100%
6
9
WATTS
12
20%
OUTPUT POWER
MFK283R3S Efficiency
Figure 12
Figure 13
Page 12 of 21
MFK Rev AE - 2015.06.04
15
100%
OUTPUT POWER
MFK282R5S Efficiency
www.craneae.com/interpoint
3
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Typical Performance Plots: 25°C case, 28 Vin, 100% load, free run, unless
For reference only, not guaranteed specifications.
90
16 V
80
28 V
42 V
EFFICIENCY (%)
EFFICIENCY (%)
85
otherwise specified.
50 V
75
70
16 V
85
42 V
28 V
80
50 V
75
65
4
8
12
16
70
20
5
10
15
WATTS
20%
20
25
WATTS
100%
20%
100%
OUTPUT POWER
OUTPUT POWER
MFK2805S Efficiency
MFK2812S Efficiency
Figure 14
Figure 15
MFK285R7S Efficiency will be added in the future.
90
90
16 V
42 V
28 V
EFFICIENCY (%)
EFFICIENCY (%)
85
50 V
80
16 V
28 V
42 V
80
50 V
75
75
70
85
70
5
10
15
20
WATTS
20%
25
10
15
WATTS
20
20%
100%
MFK2815S Efficiency
MFK2828S Efficiency
Figure 16
Figure 17
Page 13 of 21
MFK Rev AE - 2015.06.04
25
100%
OUTPUT POWER
OUTPUT POWER
www.craneae.com/interpoint
5
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Typical Performance Plots: 25°C case, 28 Vin, 100% load, free run, unless
For reference only, not guaranteed specifications.
otherwise specified.
MFK2815D Step Load 50% - 100%
MFK2815D Step Load 100% - 50%
Figure 18
Figure 19
MFK2815D Step Line 16 - 50 Volts
MFK2815D Step Line 50 - 16 Volts
Figure 20
Figure 21
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Page 14 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Typical Performance Plots: 25°C case, 28 Vin, 100% load, free run, unless
For reference only, not guaranteed specifications.
otherwise specified.
85
16 V
EFFICIENCY (%)
80
42 V
28 V
50 V
75
70
65
4
8
12
16
20
WATTS
20%
100%
OUTPUT POWER
MFK2815D Start-up 20 % Load
MFK2805D Efficiency
Figure 22
Figure 23
85
28 V
42 V
16 V
85
42 V
28 V
80
50 V
EFFICIENCY (%)
EFFICIENCY (%)
90
16 V
75
50 V
80
75
70
70
5
10
15
20
25
65
WATTS
20%
100%
5
20%
OUTPUT POWER
10
15
20
WATTS
OUTPUT POWER
MFK2812D Efficiency
MFK2815D Efficiency
Figure 24
Figure 25
MFK2807D Efficiency will be added in the future.
www.craneae.com/interpoint
Page 15 of 21
MFK Rev AE - 2015.06.04
25
100%
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
16 to 50 volts input – 25 Watt
BOTTOM VIEW MFK SINGLE
2
3
4
7
6
5
1.460 max. (37.08)
0.000
0.25 (6.35)
0.000
0.360 max
(9.14)
0.160 (4.06)
0.000
1
1.105 (28.07)
0.040 dia.
(1.02)
0.605 (15.34)
0.705 (17.91)
0.905 (22.99)
1.130 max. (28.70)
0.960 (24.38)
Squared corner and dot on top
of case indicate pin one.
0.205 (5.21)
Seam Seal
Weight: 38 grams maximum
Case dimensions in inches (mm)
Tolerance ±0.005 (0.13) for three decimal places
±0.01 (0.3) for two decimal places
unless otherwise specified
CAUTION
Heat from reflow or wave soldering may damage the device. Solder
pins individually with heat application not exceeding 300°C for 10
seconds per pin.
Materials
Header Cold Rolled Steel/Nickel/Gold
Cover Kovar/Nickel
Pins
#52 alloy/Gold ceramic seal
Gold plating of 50 - 150 microinches included in pin diameter
Seal Hole: 0.123 ±0.002 (3.12 ±0.05)
Case E5, Rev G, 2015.04.21
Please refer to the numerical dimensions for accuracy.
Figure 26: MFK Single Output
Except 28 volt single
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Page 16 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
16 to 50 volts input – 25 Watt
BOTTOM VIEW MFK DUAL
3
8
4
5
7
6
1.460 max. (37.08)
2
1.105 (28.07)
0.000
0.25 (6.35)
0.000
0.360 max
(9.14)
0.160 (4.06)
0.000
1
0.705 (17.91)
0.905 (22.99)
0.030 dia.
(0.76)
0.505 (12.83)
1.130 max. (28.70)
0.960 (24.38)
Squared corner and dot on top
of case indicate pin one.
0.205 (5.21)
Seam Seal
Weight: 38 grams maximum
Case dimensions in inches (mm)
Tolerance ±0.005 (0.13) for three decimal places
±0.01 (0.3) for two decimal places
unless otherwise specified
CAUTION
Heat from reflow or wave soldering may damage the device. Solder
pins individually with heat application not exceeding 300°C for 10
seconds per pin.
Materials
Header Cold Rolled Steel/Nickel/Gold
Cover Kovar/Nickel
Pins
#52 alloy/Gold ceramic seal
Gold plating of 50 - 150 microinches included in pin diameter
Seal Hole: 0.091 ±0.002 (2.31 ±0.05)
Case E6, Rev F, 2015.04.21
Please refer to the numerical dimensions for accuracy.
Figure 27: MFK Dual Output
Includes 28 volt single
www.craneae.com/interpoint
Page 17 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
16 to 50 volts input – 25 Watt
BOTTOM VIEW MFK SINGLE FLANGED
Flanged cases: Designator "F" required in Case Option position of model number
Seam Seal
Squared corner and dot on top
of case indicate pin one.
1.130 max. (28.70)
0.960 (24.38)
0.040 dia. (1.02)
1
2
3
2 x Dia 0.128 ±0.002
(3.25 ±0.05)
4
2 x R 0.130 (3.30)
0.560 (14.22)
1.590 (40.39)
1.105 (28.07)
5
0.905 (22.99)
0.205 (5.21)
0.140 (3.56)
0.000
0.25 (6.35)
0.000
0.360 max
(9.14)
6
0.605 (15.34)
0.705 (17.91)
7
0.160 (4.06)
0.000
(2.005 max (50.93))
top of header
Flange thickness: 0.047 (1.19)
Base Plate Detail, Edge View
Weight: 38 grams maximum
Case dimensions in inches (mm)
Tolerance ±0.005 (0.13) for three decimal places
±0.01 (0.3) for two decimal places
unless otherwise specified
CAUTION
Heat from reflow or wave soldering may damage the device. Solder
pins individually with heat application not exceeding 300°C for 10
seconds per pin.
Materials
Header Cold Rolled Steel/Nickel/Gold
Cover Kovar/Nickel
Pins
#52 alloy/Gold compression glass seal.
Gold plating of 50 - 150 microinches included in pin diameter
Seal Hole: 0.123 ±0.002 (3.12 ±0.05)
Case G5, Rev F, 2015.04.21
Please refer to the numerical dimensions for accuracy.
Figure 28: MFK Single Output Flanged
Except 28 volt single
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Page 18 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
16 to 50 volts input – 25 Watt
BOTTOM VIEW CASE MFK DUAL FLANGED
Flanged cases: Designator "F" required in Case Option position of model number
Seam Seal
Squared corner and dot on top
of case indicate pin one.
1.130 max. (28.70)
0.960 (24.38)
0.030 dia. (0.76)
1
2
3
4
2 x Dia 0.128 ±0.002
(3.25 ±0.05)
5
2 x R 0.130 (3.30)
0.560 (14.22)
1.590 (40.39)
1.105 (28.07)
0.905 (22.99)
6
0.705 (17.91)
0.205 (5.21)
0.140 (3.56)
0.000
0.25 (6.35)
0.000
0.360 max
(9.14)
7
0.505 (12.83)
8
0.160 (4.06)
0.000
(2.005 max (50.93))
top of header
Flange thickness: 0.047 (1.19)
Base Plate Detail, Edge View
Weight: 38 grams maximum
Case dimensions in inches (mm)
Tolerance ±0.005 (0.13) for three decimal places
±0.01 (0.3) for two decimal places
unless otherwise specified
CAUTION
Heat from reflow or wave soldering may damage the device. Solder
pins individually with heat application not exceeding 300°C for 10
seconds per pin.
Materials
Header Cold Rolled Steel/Nickel/Gold
Cover Kovar/Nickel
Pins
#52 alloy/Gold compression glass seal.
Gold plating of 50 - 150 microinches included in pin diameter
Seal Hole: 0.123 ±0.002 (3.12 ±0.05)
Case G6, Rev F, 2015.04.21
Please refer to the numerical dimensions for accuracy.
Figure 29: MFK Dual Output Flanged
Includes 28 volt single
www.craneae.com/interpoint
Page 19 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
1628
to 50
volts input
– 25
Watt
Volt
input – 25
Watt
Table is for reference only. See individual Series' datasheets for specific screening.
Standard, /eS (nOn-QMl) and /883 (claSS h, QMl)
Mil-prF-38534 eleMent eValuatiOn
cOMpOnent-leVel teSt perFOrMed
nOn-QMl 1
QMl
Standard and /eS
claSS h
/883
M/S 2
M/S 2
p3
n
n
n
Visual
n
n
Internal Visual
n
Final Electrical
n
n
Wire Bond Evaluation
n
n
Element Electrical
Notes
1. Standard and /ES non-QML products may not meet all of the requirements of MIL-PRF-38534.
2. M/S = Active components (microcircuit and semiconductor die)
3. P = Passive components, Class H element evaluation. Not applicable to standard and /ES
element evaluation.
Table 11: Element Evaluation
tAbLe 5: eLeMent evALuAtion–HigH reLiAbiLity stAnDArD, /es AnD /883 (CLAss H)
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Page 20 of 21
MFK Rev AE - 2015.06.04
Crane Aerospace & Electronics Power Solutions
MFK Single and Dual DC-DC Converters
16 to 50 volts input – 25 Watt
Table is for reference only. See individual Series' datasheets for specific screening.
Standard, /eS (nOn-QMl) and /883 (claSS h, QMl)
Mil-prF-38534 enVirOnMental Screening
nOn-QMl 1
teSt perFOrMed
pre-capInspection,Method2017,2032
QMl 2
Standard
/eS
claSS h
/883
n
n
n
temperatureCycle(10times)
Method 1010, Cond. C, -65°C to +150°C, ambient
n
Method 1010, Cond. B, -55°C to +125°C, ambient
n
Constantacceleration
Method 2001, 3000 g
n
Method 2001, 500 g
n
pInD,testMethod2020,Cond.a
n
n3
burn-inMethod1015,+125°Ccase,typical4
96 hours
n
160 hours
n
Finalelectricaltest,MIl-prF-38534,groupa,
Subgroups 1 through 6, -55°C, +25°C, +125°C case
Subgroups 1 and 4, +25°C case
n
n
n
Hermeticitytest
Gross Leak, Method 1014, Cond. C
n
n
Fine Leak, Method 1014, Cond. A
n
n
n
n
Gross Leak, Dip
n
Finalvisualinspection,Method2009
n
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534.
Notes
1. Standard and /ES, non-QML products, may not meet all of the requirements of MIL-PRF-38534.
2. All processes are QML qualified and performed by certified operators.
3. Not required by DLA but performed to assure product quality.
4. Burn-in temperature designed to bring the case temperature to +125°C minimum. Burn-in is a powered test.
able 12: –H
Environmental
Screening
tAbLe 6: environMentAL sTCreening
igH reLiAbiLity
stAnDArD, /es AnD /883 (CLAss H)
MFK Single and Dual, MFK Rev AE - 2015.06.04. This revision supersedes all previous releases. All technical information is believed to be
accurate, but no responsibility is assumed for errors or omissions. Interpoint is a registered trademark of Crane Co. MFK Series is a trademark of
Crane Electronics, Inc. Copyright © 1999 - 2015 Crane Electronics, Inc. All rights reserved. www.craneae.com/interpoint
Page 21 of 21