- Interpoint

Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 VOLT INPUT – 30 WATT
FEATURES
Radiation tolerant space dc-dc converter
• Single event effects (SEE) LET performance to
86 MeV cm2/mg
• Total ionizing dose (TID) guaranteed to 100 krad(Si)
RHA level R, per MIL-STD-883 method 1019
-- 50 - 300 rad(Si)/sec dose rate (Condition A)
-- 10 mrad(Si)/sec dose rate (Condition D)
• Operating temperature -55° to +125°C
• Qualified to MIL-PRF-38534 Class H and K
• Input voltage range 16 to 40 volts
models
• Transient protection 50 V for 50 ms
Output Voltage (V)
• Fully isolated, magnetic feedback
• Fixed high frequency switching, 600 kHz typical
• Trim function or remote sense on single output models
• Inhibit and synchronization functions
• Indefinite short circuit protection
DESCRIPTION
The Interpoint® SMTR Series™ of 28 volt dc-dc converters offers
up to 30 watts of output power from single or dual configurations.
They operate over the full military temperature range of -55°C
to +125°C with up to 84% efficiency. SMTR converters are
packaged in hermetically sealed metal ­enclosures, making them
ideal for use in military, aerospace and other high reliability
applications.
Screening
SMTR converters offer screening options to Space Prototype (O),
Class H, or Class K. Radiation tolerant to Radiation Hardness
Assurance (RHA) levels of “-” (O), “P,” or “R,” per MIL-STD38534. Interpoint™ model numbers use an “O” in the RHA
designator position to indicate the “-” (dash) Radiation Hardness
Assurance level of MIL-PRF-38534, which is defined as “no
RHA”. See Table 9 on page 13 and Table 10 on page 14 for
more information.
The SMTR converters are constant frequency, p
­ ulse-width
mod­ulated switching regulators which use a quasi-square wave,
single ended, forward converter design. Tight load regulation is
maintained by using a wide bandwidth magnetic feedback and,
on single output models, through use of remote sense. On dual
output models, the positive output is independently regulated and
the negative output is cross regulated through the use of tightlycoupled magnetics.
Crane Aerospace & Electronics
Power Solutions – Interpoint Products
10301 Willows Rd. NE, Redmond, WA 98052
+1.425.882.3100 • [email protected]
www.craneae.com/interpoint
DUAL
3.3
±5
5
±12
12
±15
15
• Up to 84% efficiency
Converter Design
SINGLE
SMTR converters have an internal input filter that helps reduce
the need for external components in normal ­operation. Use our
SFMC EMI input filter to meet the requirements of MIL-STD461C’s CE03. For the lowest noise performance, connection
of the case to input common is recommended. The connection
can be hard-wired or ac coupled with a small ceramic bypass
capacitor. Indefinite short circuit protection and overload
protection are ­provided by a constant current-limit feature. This
protective system senses current in the converter’s secondary
stage and limits it to approximately 140% of the maximum rated
output current.
Synchronization
Synchronizing the converter with the system clock allows
the designer to confine switching noise to clock transitions,
minimizing interference and reducing the need for filtering. In
sync mode, the converter will run at any frequency between 500
kHz and 675 kHz. The sync control operates with an active high
at any duty cycle between 40% and 60%. The sync pin should be
connected to input common pin when not in use.
Wide Voltage Range
SMTR converters are designed to provide full power operation
over the input voltage range of 16 to 40 volts. Operation below
16 volts, including MIL-STD-704D emergency power conditions is
possible with derated power. Refer to the low line dropout graphs
(“Figure 22” on page 10, “Figure 31” on page 1 and “Figure 32”
on page 1) for details.
Page 1 of 14
SMTR Rev AB - 2015.01.06
Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 Volt input – 30 Watt
Improved Dynamic Response
The SMTR Series feed-forward compensation system provides
excellent dynamic response and noise rejection. Audio rejection
is typically 40 dB. The min. to max. step line transient response
is typically less than 4%.
Inhibit Function
SMTR converters provide an inhibit terminal that can be used to
disable internal switching, resulting in no output voltage and very
low quiescent input current. The converter is inhibited when the
inhibit pin is pulled below 0.8 V and enabled when its inhibit pin
is left floating. An external inhibit interface should be capable of
pulling the converter’s inhibit pin below 0.8 V while sinking the
maximum inhibit current and also allowing the inhibit pin to float
high to enable the converter. A voltage should not be applied to
the inhibit pin. The open circuit voltage present on the inhibit pin
is 9 to 11 V.
trim and Remote sense (available on single output models only)
SMTR SINGLE OUTPUT CONVERTER
SMTR SINGLE OUTPUT CONVERTER
1
+VIN
4
OUTPUT
COMMON
1
SENSE
RETURN
3
6
SENSE
10
INPUT
COMMON
1
POSITIVE
OUTPUT
+VIN
OUTPUT
COMMON
SENSE
RETURN
RL
SENSE
1
RT
5
10
INPUT
COMMON
POSITIVE
OUTPUT
EXTERNAL TRIM CONNECTION
REMOTE SENSE CONNECTION
1 Make connections at converter.
2 Make connections at load.
Figure 1: Trim Connection 1, 2, 3
Trim Formulas Vout = desired output voltage;
RT = trim resistor
3.3 V:
RT = 1300 * Vout
1.2475
5 V:
RT = 1300 * Vout
1.2475
12 V:
RT = 1300 * Vout
1.2475
15 V:
RT = 1300 * Vout
1.2475
www.craneae.com/interpoint
– 4304
– 6512
– 15631
– 19498
4
3
6
5
Figure 2: Remote Sense 2, 3
Notes for Remote Sense and Trim
1.When trimming output voltage and/or remote sensing, the
total output voltage increase must be less than 0.6 volts at the
converters pins. Do not exceed maximum power.
2.If neither voltage trim nor remote sense will be used, connect pin 3
to pin 4 and pin 5 to pin 6 or the output voltage will increase by 1.2
volts.
3. CAUTION: The converter will be permanently damaged if the
positive remote sense (pin 6) is shorted to ground. Damage may
also result if the output common or positive output is disconnected
from the load with the remote sense leads connected to the load.
4. When using remote sense for voltage compensation or when using
remote sense for trim, the output will drift over temperature. Contact
Applications Engineering for more information at [email protected]
crane-eg.com
Page 2 of 14
SMTR Rev AB - 2015.01.06
2
RL
2
Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 Volt input – 30 Watt
PIN OUT
Pin
Single Output
Dual Output
1
Positive Input
Positive Input
2
Inhibit
Inhibit
3
Sense Return
Positive Output
4
Output Common
Output Common
5
Positive Output
Negative Output
6
Positive Sense
Case Ground
7
Case Ground
Case Ground
8
Case Ground
Case Ground
9
Sync
Sync
10
Input Common
Input Common
Table 1: Pin Out
Inhibit
PINS NOT IN USE
Leave unconnected
Sync In
Connect to Input Common
Sense Lines
Must be connected to
appropriate outputs
Table 2: Pins not in Use
Dot on top of cover indicates pin one.
1
10
2
3
4
BOTTOM VIEW
SMTR SINGLE
FLANGED AND NON-FLANGED
9
8
7
Dot on top of cover indicates pin one.
5
1
3
4
5
BOTTOM VIEW
SMTR DUAL
FLANGED AND NON-FLANGED
6
10
Dotted line outlines flanged package option.
9
8
7
6
Dotted line outlines flanged package option.
For dimensions see “Figure 23: Cases H2” on page 11
and “Figure 24: Cases K3” on page 12.
For dimensions see “Figure 23: Cases H2” on page 11
and “Figure 24: Cases K3” on page 12.
Figure 4: Pin Out SMTR Dual Output Models
Figure 3: Pin Out SMTR Single Output Models
www.craneae.com/interpoint
2
Page 3 of 14
SMTR Rev AB - 2015.01.06
Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 Volt input – 30 Watt
model numbering key
Base Model
Input Voltage
SMTR
28 05
D
SMD Numbers
F / K R
Output Voltage
Number of Outputs
(S=single, D=dual)
Case Option
("F" indicates flanged option, non-flanged
case has no designator in this position)
Screening
Figure 5: Model Numbering Key
Category
Base Model and
Input Voltage
Options
SMTR
Fill in for
Model #
__________
SMTR
SMTR Similar Part
5962R0150102KXC
SMTR283R3S/KR
5962R9306802KXC
SMTR2805s/KR
5962R9306902KXC
SMTR2812S/KR
5962R9307002KXC
SMTR2815S/KR
5962R9320502KXC
SMTR2805d/KR
5962R9307102KXC
SMTR2812D/KR
5962R9307202KXC
SMTR2815D/KR
To indicate the flanged case option change the “X” to “Z” In the
SMD number. The SMD number shown is for Class K screening,
non-flanged, and Radiation Hardness Assurance (RHA) level R.
See the SMD for the numbers for other screening and radiation
levels. For exact specifications for an SMD product, refer to the
SMD drawing. SMDs can be downloaded from:
http://www.dscc.dla.mil/programs/smcr
Radiation Hardness
Assurance (RHA)
To
Standard Microcircuit
Drawing (SMD)
Table 3: SMD Numbers
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
RHA 5
3R3, 05, 12, 15
S
(non-flanged, leave blank)
O
O
05, 12, 15
D
F (flanged)
H
P
K
R
__________
_______
/
_______
Notes:
1. Output Voltage: An R indicates a decimal point. 3R3 is 3.3 volts out. The 3R3 is 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 23 on page 11) leave the case option blank. For the flanged case option (Figure 24 on page 12), insert the
letter F in the Case Option position.
4. Screening: A screening level of O is a Space Prototype and is only available with RHA O. See Table 9 on page 13 and Table 10 on page 14 for more
information.
5. RHA: Interpoint model numbers use an “O” in the RHA designator position to indicate the “-” (dash) Radiation Hardness Assurance level of MIL-PRF-38534,
which is defined as “no RHA.” RHA O is only available with Screening level O. See Table 10 on page 14 for more information.
Table 4: Model Number Options
www.craneae.com/interpoint
Page 4 of 14
SMTR Rev AB - 2015.01.06
Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 Volt input – 30 Watt
Table 5: Operating Conditions, All Models, 25°C case, 28 Vin, 100% load, unless otherwise specified.
All Models
PARAMETER
CONDITIONS
LEAD SOLDERING TEMPERATURE
1
MIN
10 seconds max.
STORAGE TEMPERATURE 1
CASE OPERATING
FULL POWER
TEMPERATURE
ABSOLUTE
DERATING OUTPUT POWER/CURRENT 1
LINEARLY
ESD RATING
1
ISOLATION: input to output or any
pin to case except case pin
CURRENT LIMIT 1, 2
MAX
UNITS
—
—
300
°C
-65
—
+150
°C
-55
—
+125
-55
—
+135
°C
From 100% at 125°C to 0% at 135°C
MIL-STD-883 Method 3015
MIL-PRF-38534, 3.9.5.8.2
AUDIO REJECTION
1
TYP
2000 - 3999
Class 2
@ 500 VDC at 25°C
% OF FULL LOAD
1
V
100
—
—
Megohms
—
140
—
%
—
40
—
dB
CONVERSION FREQUENCY
FREE RUN -55° TO +125°C
550
600
650
kHz
SYNCHRONIZATION
INPUT FREQUENCY
500
—
675
kHz
%
Sync is floating and isolated
DUTY CYCLE
1
40
—
60
ACTIVE LOW
—
—
0.8
ACTIVE HIGH 1
4.5
—
5
REFERENCED TO
V
INPUT COMMON
IF NOT USED
CONNECT TO INPUT COMMON
INHIBIT ACTIVE LOW (OUTPUT DISABLED)
inhibit pin pulled low
—
—
0.8
V
Do not apply a voltage to the inhibit pin. 3
INHIBIT PIN SOURCE CURRENT 1
—
—
8
mA
INHIBIT ACTIVE HIGH (OUTPUT ENABLED)
INHIBIT PIN CONDITION
Do not apply a voltage to the inhibit pin. 3
OPEN PIN VOLTAGE 1
REFERENCED TO
INPUT COMMON
OPEN COLLECTOR OR UNCONNECTED
9
—
11
V
For mean time between failures (MTBF) contact Applications Engineering
[email protected] +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 140% (typical value) of the maximum
rated “total” current of both outputs.
3. 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.
www.craneae.com/interpoint
Page 5 of 14
SMTR Rev AB - 2015.01.06
Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 Volt input – 30 Watt
Table 6: Electrical Characteristics: -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified.
Single output models
PARAMETER
SMTR283R3S
CONDITIONS
OUTPUT VOLTAGE
OUTPUT CURRENT
VIN = 16 TO 40 V
OUTPUT POWER
VIN = 16 TO 40 V
TC = 25°C
OUTPUT RIPPLE
10 kHz - 2 MHz
LINE REGULATION 2
INPUT VOLTAGE
MAX
MIN
TYP
MAX
3.201
3.3
3.399
4.85
5.00
5.15
V
0
—
5.45
0
—
5.0
A
—
—
18
0
—
25
W
—
20
40
—
20
50
—
—
50
—
—
90
—
0
20
—
10
50
mV
NO LOAD TO FULL
—
2
20
—
10
50
mV
16
28
40
16
28
40
V
V
CONTINUOUS
1
NO LOAD TO FULL
TRANSIENT 50 ms
—
—
50
—
—
50
INPUT CURRENT
NO LOAD
—
30
75
—
35
75
INHIBITED
—
—
8
—
—
8
INPUT RIPPLE CURRENT 3
10 kHz - 10 MHz
—
25
50
—
25
50
EFFICIENCY
TC = 25°C
70
73
—
74
78
—
66
—
—
71
—
—
—
—
12
—
—
14
TC = -55°C TO +125°C
LOAD FAULT 4
UNITS
TYP
TC = -55°C TO +125°C
VIN = 16 TO 40 V
LOAD REGULATION
SMTR2805S
MIN
POWER DISSIPATION
1
mV p-p
mA
mA p-p
%
W
SHORT CIRCUIT
RECOVERY
—
—
6
—
—
5
ms
STEP LOAD RESPONSE
TRANSIENT
—
±130
±300
—
±180
±300
mV pk
0% - 100% - 50%
RECOVERY 5
—
—
200
—
—
200
µs
TRANSIENT
RECOVERY 5
—
—
±300
—
—
±300
mV pk
—
—
300
—
—
300
µs
DELAY
OVERSHOOT 1
—
—
5
—
—
5
ms
FULL LOAD
—
0
50
—
0
50
mV pk
CAPACITIVE LOAD 1
NO EFFECT ON DC
TC = 25°C
Performance
—
—
3000
—
—
3000
µF
STEP LINE RESPONSE
Vin 16 - 40 -16 V
START-UP
6
1
Notes:
1. Guaranteed by qualification test and/or analysis. Not an in-line test.
2. Operation is limited below 16 V (see “Figure 22” on page 10).
3.Tested with 6800 pF ceramic bypass capacitor connected externally from
input common to case.
4.Short circuit protection not guaranteed above 125°C case temperature.
www.craneae.com/interpoint
5. Recovery time is measured from application of the transient to the point
at which VOUT is within 1% of final value.
6.Tested on release from inhibit.
Page 6 of 14
SMTR Rev AB - 2015.01.06
Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 Volt input – 30 Watt
Table 7: Electrical Characteristics: -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified.
single output models
PARAMETER
SMTR2812S
CONDITIONS
OUTPUT VOLTAGE
OUTPUT CURRENT
OUTPUT POWER
TYP
MAX
MIN
TYP
MAX
10 kHz - 2 MHz
11.64
12.00
12.36
14.70
15.00
15.30
V
0
—
2.5
0
—
2.0
A
0
—
30
0
—
30
W
TC = 25°C
—
15
40
—
15
40
—
—
90
—
—
90
VIN = 16 TO 40 V
TC = -55°C TO +125°C
LINE REGULATION 2
LOAD REGULATION
INPUT VOLTAGE
mV p-p
—
10
50
—
10
50
mV
NO LOAD TO FULL
—
20
50
—
10
50
mV
CONTINUOUS
16
28
40
16
28
40
V
V
1
NO LOAD TO FULL
TRANSIENT 50 ms
—
—
50
—
—
50
INPUT CURRENT
NO LOAD
—
35
75
—
35
75
INHIBITED
—
—
8
—
—
8
INPUT RIPPLE CURRENT 3
10 kHz - 10 MHz
—
35
50
—
35
50
EFFICIENCY
TC = 25°C
78
83
—
79
83
—
75
—
—
76
—
—
—
—
12
—
—
12
TC = -55°C TO +125°C
LOAD FAULT 4
UNITS
Vin = 16 to 40 V
Vin = 16 to 40 V
OUTPUT RIPPLE
SMTR2815S
MIN
POWER DISSIPATION
1
mA
mA p-p
%
W
SHORT CIRCUIT
RECOVERY
—
—
5
—
—
5
ms
STEP LOAD RESPONSE
TRANSIENT
—
±270
±400
—
±310
±500
mV pk
50% - 100% - 50%
RECOVERY 5
—
—
200
—
—
300
µs
TRANSIENT
RECOVERY 5
—
—
±500
—
—
±600
mV pk
—
—
300
—
—
300
µs
STEP LINE Response
16 - 40 -16 V
START-UP
6
1
DELAY
—
—
5
—
—
5
m sec
FULL LOAD
OVERSHOOT 1
—
0
120
—
0
150
mV pk
CAPACITIVE LOAD 1
NO EFFECT ON DC
Tc = 25°C
Performance
—
—
3000
—
—
3000
µF
Notes:
1. Guaranteed by qualification test and/or analysis. Not an in-line test.
2. Operation is limited below 16 V (see “Figure 22” on page 10).
3.Tested with 6800 pF ceramic bypass capacitor connected externally from
input common to case.
4.Short circuit protection not guaranteed above 125°C case temperature.
www.craneae.com/interpoint
5. Recovery time is measured from application of the transient to the point
at which VOUT is within 1% of final value.
6.Tested on release from inhibit.
Page 7 of 14
SMTR Rev AB - 2015.01.06
Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 Volt input – 30 Watt
Table 8: Electrical Characteristics: -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified.
DUAL output models
SMTR2805D
SMTR2812D
SMTR2815D
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
OUTPUT VOLTAGE
+ VOUT
4.85
5.00
5.15
11.64
12.00
12.36
14.55
15.00
15.45
4.82
5.00
5.18
11.58
12.00
12.42
14.47
15.00
15.53
- VOUT
UNITS
V
OUTPUT CURRENT 2, 3
EITHER OUTPUT
0
2.5
4.5 1
0
1.25
2.25 1
0
1.00
1.80 1
VIN = 16 to 40 V
TOTAL OUTPUT
—
—
5
—
—
2.5
—
—
2.00
OUTPUT POWER 2, 3
EITHER OUTPUT
0
12.5
22.5 1
0
15
27 1
0
15
27 1
VIN = 16 to 40 V
TOTAL OUTPUT
—
—
25
—
—
30
—
—
30
—
20
50
—
30
120
—
25
80
10 kHz - 2 MHz ± VOUT
TC = 25°C
TC = -55°C TO +125°C
—
—
90
—
—
150
—
—
120
—
0
50
—
0
50
—
0
50
VIN = 16 TO 40 V
+ VOUT
- VOUT
—
10
100
—
15
150
—
10
180
+ VOUT
—
5
50
—
5
50
—
—
50
—
15
100
—
30
150
—
—
180
CROSS REGULATION
- VOUT
SEE NOTE 5
—
—
12
—
—
8.3
—
—
8
effect on -Vout, 25°C
INPUT VOLTAGE
SEE NOTE 6
—
—
12
—
—
8.3
—
—
8
16
28
40
16
28
40
16
28
40
V
V
OUTPUT RIPPLE
LINE REGULATION 4
LOAD REGULATION
NO LOAD TO FULL
CONTINUOUS
1
NO LOAD TO FULL
TRANSIENT 50 ms
0
—
50
0
—
50
0
—
50
INPUT CURRENT
NO LOAD
—
28
75
–
40
75
—
48
75
INHIBITED
—
—
8
—
—
8
—
—
8
INPUT RIPPLE CURRENT 7
10 kHz - 10 MHz
—
25
50
—
35
50
—
35
50
EFFICIENCY
TC = 25°C
74
76
—
77
80
—
78
81
—
72
—
—
75
—
—
75
—
—
—
8
12
—
6
12
—
5
12
BALANCED LOAD
LOAD FAULT 8
TC = -55°C TO +125°C
POWER DISSIPATION
1
A
W
mV p-p
mV
mV
%
mA
mA p-p
%
W
SHORT CIRCUIT
RECOVERY
—
—
5.0
—
—
5.0
—
—
5.0
ms
STEP LOAD RESPONSE
TRANSIENT
—
±150
±300
—
±200
±300
—
±220
±400
mV pk
50% - 100% - 50% ± VOUT
RECOVERY 9
—
—
200
—
—
200
—
—
200
µs
STEP LINE RESPONSE 1
TRANSIENT
—
—
±400
—
—
±400
—
—
±500
mV pk
16 - 40 -16 V ± VOUT
RECOVERY 9
—
—
300
—
—
300
—
—
300
µs
START-UP 10
DELAY
—
—
5
—
—
5
—
—
5
ms
FULL LOAD
OVERSHOOT 1
—
0
180
—
0
150
—
0
150
mV pk
CAPACITIVE LOAD 1
TC = 25°C
NO EFFECT ON DC
PERFORMANCE
—
—
3000
—
—
3000
—
—
3000
µF
Notes:
1. Guaranteed by qualification test and/or analysis. Not an in-line test.
2. The specified max current is available from either output.
3.Up to 90% of the total output current/power is available from either output
providing the opposite output is carrying at least 10% of the total output
power.
4.Operation is limited below 16 V (see “Figure 22” on page 10).
5.Effect on the negative output under the following conditions:
+POUT 20% to 80%; –POUT 80% to 20%.
www.craneae.com/interpoint
6.Effect on the negative output under the following conditions:
+POUT 50%; –POUT 10% to 50%. See “Figure 21” on page 10.
7.Tested with 6800 pF ceramic bypass capacitor connected externally from
input common to case.
8.Indefinite short circuit protection not guaranteed above 125°C case
temperature.
9.Recovery time is measured from application of the transient to point at
which VOUT is within 1% of final value.
10. Tested on release from inhibit.
Page 8 of 14
SMTR Rev AB - 2015.01.06
Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 Volt input – 30 Watt
Typical Performance Plots:
28 Vin, 25°C TC, 100% load, free run, unless otherwise specified.
These are examples for reference only and are not guaranteed specifications.
16V
70
40V
75
40V
70
5
10
15
20
OUTPUT POWER (WATTS)
60
25
5
SMTR2805S EFFICIENCY
10
10
15
20
25
OUTPUT POWER (WATTS)
30
Figure 8
0
10
70
40V
10
ATTENUATION (dB)
75
20
16V
85
EFFICIENCY (%)
EFFICIENCY (%)
5
SMTR2815S EFFICIENCY
Figure 7
28V
5
40V
72
62
30
SMTR2812S EFFICIENCY
30
28V
40
80
50
60
40V
75
70
80
70
15
20
25
OUTPUT POWER (WATTS)
65
30
90
100
0.1
5
10
15
20
25
OUTPUT POWER (WATTS)
30
Figure 9
10
100
Figure 11
Figure 10
25W to 12.5W
25W to 2.5W
VIN
200mV/div
100mV/div
1
FREQUENCY (kHz)
AUDIO REJECTION, SMTR SERIES
SMTR2815D EFFICIENCY
SMTR2812D EFFICIENCY
20V/div
25
90
65
20mV/div
20
16V
80
60
15
OUTPUT POWER (WATTS)
Figure 6
85
77
67
65
65
28V
82
28V
EFFICIENCY (%)
75
16V
16V
80
28V
EFFICIENCY (%)
EFFICIENCY (%)
80
60
87
85
85
2.5W to 25W
VOUT
12.5W to 25W
50 μs/div
16 TO 40V
SMTR2805S STEP LINE RESPONSE
Figure 12
www.craneae.com/interpoint
50 μs/div
50% 100%
SMTR2805S STEP LOAD RESPONSE
Figure 13
Page 9 of 14
SMTR Rev AB - 2015.01.06
50 μs/div
10% 100%
SMTR2805S STEP LOAD RESPONSE
Figure 14
Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 Volt input – 30 Watt
20V/div
–POUT =15W (50%)
VIN
VIN
100mV/div
20V/div
Typical Performance Plots:
28 Vin, 25°C TC, 100% load, free run, unless otherwise specified.
These are examples for reference only and are not guaranteed specifications.
20mV/div
1V/div
+VOUT
VOUT
7.5W to 15W
–VOUT
500 µs/div
50 μs/div
16 V TO 40 V
SMTR2805S TURN-ON INTO NO LOAD
SMTR2815D STEP LINE RESPONSE
Figure 15
–VOUT VOLTAGE CHANGE (%)
20V/div
10
9
8
7
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
+VOUT
3W to 15W
–VOUT
200 µs/div
50 μs/div
10%
50%
SMTR2815D TURN-ON INTO NO LOAD
SMTR2815D +VOUT STEP LOAD RESPONSE
15.5
2805D
INPUT VOLTAGE (Volts)
–VOUT VOLTAGE CHANGE (%)
16.0
2812D
15.0
COND A
2815D
14.5
COND B
14.0
2805D
2812D
30
13.5
40
50
OUTPUT LOAD (%)
COND. B: 50% LOAD +V, 50% to 10% –V
COND. A: 50% LOAD –V, 50% to 10% +V
CROSS REGULATION
Figure 21 1
13.0
9
12
15
18
21
24
27
OUTPUT POWER (WATTS)
1% DROP
LOW LINE DROPOUT
Figure 22
Notes: 1. Percent (%) of power refers to the percent of the total output power of the converter.
www.craneae.com/interpoint
2812D
2805D
2815D
2815D
2812D
2805D
+POUT 0 3 6 9 12 15 18 21 24 27 30
–POUT 30 27 24 21 18 15 12 9 6 3 0
OUTPUT LOAD (Watts)
10% to 90% LOAD +V
90% to 10% LOAD –V
CROSS REGULATION
1
Figure 20
Figure 19
Figure 181
20
SMTR2815D +VOUT STEP LOAD RESPONSE
Figure 171
VIN
5V/div
100mV/div
15W to 3W
10
50 μs/div
25%
50%
Figure 16
–POUT =15W (50%)
8
7
6
5
4
3
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
15W to 7.5W
Page 10 of 14
SMTR Rev AB - 2015.01.06
30
Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 Volt input – 30 Watt
BOTTOM VIEW CASE H2
Seam Seal
Squared corner and dot on top
of case indicate pin one.
1.115 max. (28.32)
0.955 (24.26)
1
0.040 dia
(1.02)
2
3
4
5
10
9
8
7
6
0.245 (6.22)
0.645 (16.38)
1.045 (26.54)
1.445 (36.70)
1.845 (46.86)
SINGLE
0.155 (3.94)
Squared corner and dot on top
of case indicate pin one.
1.115 max. (28.32)
2.100 max. (53.34)
0.000
0.25 (6.4)
0.000
0.400 max.
(10.16)
0.000
0.955 (24.26)
1
2
3
4
5
10
9
8
7
6
0.245 (6.22)
0.645 (16.38)
1.045 (26.54)
1.445 (36.70)
1.845 (46.86)
DUAL
0.155 (3.94)
Weight: 50 grams maximum
2.100 max. (53.34)
0.000
0.000
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 is included in pin diameter
Seal hole 0.120 ±0.002 (3.05 ± 0.05)
Case H2 SMTR S/D, Rev K, 2014.01.13
Please refer to the numerical dimensions for accuracy.
Figure 23: Cases H2
www.craneae.com/interpoint
Page 11 of 14
SMTR Rev AB - 2015.01.06
Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 Volt input – 30 Watt
BOTTOM VIEW CASE K3
Flanged cases: Designator “F” required in Case Option position of model number.
Seam Seal
Dot on top of case indicates pin one
1.115 max. (28.32)
0.955 (24.26)
1
2
3
4
2 x Dia 0.162 ±0.002
(4.11 ±0.05)
5
2 x R 0.170 (4.32)
SINGLE
10
9
8
7
0.645
(16.38)
1.045
(26.54)
1.445
(36.70)
0.555 (14.1)
0.245
(6.22)
0.040 dia
(1.02)
6
0.155 (3.94)
2.320
(58.93)
1.845
(46.86)
(2.090
(53.09))
(0.000)
0.230
(5.84)
1
4
5
8
7
6
1.445
(36.70)
Dot on top of case indicates pin one
1.045
(26.54)
0.25 (6.4)
0.000
0.400 max.
(10.16)
0.000
2
3
2 x Dia 0.162 ±0.002
(4.11 ±0.05)
2 x R 0.170 (4.32)
0.645
(16.38)
(2.910 max (73.91))
top of header
Flange thickness: 0.060 (1.52)
Base Plate Detail, Edge View
Weight: 52 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 0.120 ±0.002 (3.04 ±0.05)
Case K3 SMTR SD F, Rev L, 2014.12.10
Please refer to the numerical dimensions for accuracy.
Figure 24: Cases K3
www.craneae.com/interpoint
Page 12 of 14
SMTR Rev AB - 2015.01.06
2.320
(58.93)
9
1.845
(46.86)
(2.090
(53.09))
10
0.245
(6.22)
(0.000)
– 0.230
(5.84)
DUAL
Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 Volt input – 30 Watt
Table is for reference only. See individual Series' datasheets for specific screening.
dc-dc conVerterS PrototyPe, claSS h and claSS K,
Mil-Prf-38534 eleMent eValuation
non-QMl 1
PrototyPe
/o
coMPonent-leVel teSt PerforMed
Element Electrical
M/S
2
n
QMl
claSS h
M/S
2
/h
P
claSS K
3
M/S
2
/K
P3
n
n
n
n
Visual
n
n
n
n
Internal Visual
n
n
Temperature Cycling
n
n
Constant Acceleration
n
n
Interim Electrical
n
Burn-in
n
Post Burn-in Electrical
n
Steady State Life
n
Voltage Conditioning Aging
n
Visual Inspection
n
Final Electrical
n
n
n
n
Wire Bond Evaluation
n
n
n
n
SEM
n
Notes
1. 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 and K element evaluation. Not applicable to space prototype (“O”) element evaluation.
Definitions:
Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534
SEM: Scanning Electron Microscopy
Table
9: Element
Evaluation
table 1: element evaluation
–Dc-Dc
converterS
prototype, claSS h anD claSS K
www.craneae.com/interpoint
Page 13 of 14
SMTR Rev AB - 2015.01.06
Crane Aerospace & Electronics Power Solutions
SMTR Single and Dual DC-DC Converters
28 Volt input – 30 Watt
Table is for reference only. See individual Series' datasheets for specific screening.
dc-dc conVerterS PrototyPe, claSS h and claSS K
Mil-Prf-38534 enVironMental Screening and rha1 P or r
non-QMl 2
PrototyPe
teSt PerforMed
/oo
Non-destruct wire bond pull, Method 2023
claSS h
/hP
/hr
4
4
n
claSS K
/KP
/Kr
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n4
n
n4
n
n
n
n
n4
n4
n
n
n
n
n
n
n
Pre-cap Inspection, Method 2017, 2032
QMl 3
Temperature Cycle (10 times) (Qual 100 times)
Method 1010, Cond. C, -65°C to +150°C, ambient
Constant Acceleration
Method 2001, 3000 g (Qual 5000 g)
PIND, Test Method 2020, Cond. A
Pre burn-in test, group A, Subgroups 1 and 4
burn-in Method 1015, +125°C case, typical
n
5
96 hours
n
160 hours
2 x 160 hours (includes mid-BI test)
Final Electrical Test, MIL-PRF-38534, group A,
Subgroups 1 and 4: +25°C case
n
Subgroups 1 through 6, -55°C, +25°C, +125°C case
n
n
n
n
Hermeticity Test
Gross Leak, Method 1014, Cond. C
n
n
n
n
n
Fine Leak, Method 1014, Cond. A
n
n
n
n
n
Radiography, Method 2012
n
Post Radiography Electrical Test, +25°C case
n4
n
n4
n
n
Final visual inspection, Method 2009
n
RHA P: 30 krad(Si) total dose
n
RHA R: 100 krad(Si) total dose
Single Event Effect (SEE)
n
n
n
n
1
n
n
n
n
n
Linear Energy Transfer (LET) 86 MeV cm2/mg
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534.
Notes
1. Our Redmond facility has a DLA approved RHA plan for Interpoint power
products. Our SMD products with RHA “P” or “R” code meet DLA requirements.
2. “OO” prototypes are non-QML products and may not meet all of the requirements
of MIL-PRF-38534. “O” in the RHA designator position in Interpoint model
numbers indicates DLA RHA “-” defined as no RHA.
3. All processes are QML qualified and performed by certified operators.
4. Not required by DLA but performed to assure product quality.
5. Burn-in temperature designed to bring the case temperature to +125°C minimum.
Burn-in is a powered test.
table 2: environmental Screening anD rha–Dc-Dc converterS prototype, claSS h anD claSS K, rha p or r
Table 10: Environmental Screening and RHA Levels
SMTR Series Single and Dual, SMTR Rev AB - 2015.01.06. This revision supersedes all previous releases. All technical information is believed
to be accurate, but no responsibility is assumed for errors or omissions. Crane Electronics, Inc. reserves the right to make changes in products
or specifications without notice. Interpoint is a registered trademark of Crane Co. and SMTR Series is a trademark of Crane Electronics, Inc.
Copyright © 1999-2015 Crane Electronics, Inc. All rights reserved. www.craneae.com/interpoint
Page 14 of 14