CRANE SMRT283R3SHR

Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
FEATURES
•
-55°C to +125°C operation
•
19 to 56 VDC input
•
80 V for 100 ms transient protection
•
Dual Magnetic feedback
• Topology – Two-Phase Flyback
•
Inhibit function and output trim
•
Indefinite short circuit protection
•
Radiation tolerant to
1 x 1012 protons/cm2 neutron or proton fluence
MODELS
1011 rads(Si)/sec dose rate
VDC OUTPUT
3 x 105 rads(Si) total dose
SINGLE
3.3
5
12
15
SEU 60 MeV cm2/mg
•
Meets MIL-STD-704A emergency operation and transient standards
•
No minimum load required
•
5 port isolated design
•
Isolated synchronization input
•
Output trimmable up to +25% and -45% (see trim
instructions)
DUAL
±5
±12
±15
TRIPLE
+3.3 & ±12
+3.3 & ±15
+5 & ±12
+5 & ±15
DESCRIPTION
The SMRT Series™ of DC/DC converters offers up to 35
watts of power in a radiation tolerant design. The low profile
SMRT converters are manufactured in Interpoint’s fully certified
and qualified MIL-STD-1772 production facility and packaged
in hermetically sealed steel cases. They are ideal for use in
programs requiring high reliability, small size, and high levels of
radiation hardening assurance.
the other and from the input. Sets are defined as follows:
Two paralleled power trains supplying a single output; one
independent power train providing a single output; and one
independent power train providing two outputs (neg. output is
cross-regulated). This product configuration eliminates cross
regulation effects between output sets.
Configurations include:
The SMRT converters are switching regulators which use a twophase, phase shifted flyback design with a nominal switching
frequency of 300 kHz. Close regulation is maintained with
advanced constant frequency pulse width modulation design
techniques. The SMRT’s feed-forward compensation and
discontinuous topologies provide high levels (80 dB peak) of
input-to-output ripple rejection. A minimum load of 2% of full load
should be used on outputs at TID of 100k rads(Si) or greater to
ensure tight regulation over the full input range.
Two independent feedback loops are used to regulate the dual
and triple outputs, one feedback loop regulates the two-phased
single output. Each set of outputs is electrically isolated from
Crane Aerospace & Electronics
Electronics Group (Interpoint Brand)
PO Box 97005 • Redmond WA 98073-9705
425.882.3100 • [email protected]
www.craneae.com
• Single Output: One two-phased single output
• Dual Output: Two single phase single outputs
• Triple Output: One single phase independent Main output and one
single phase dual output. (± Auxiliary output).
UNDERVOLTAGE LOCKOUT
The converters have an undervoltage lockout that will allow
power conversion at 17 volts on a rising input voltage and a
conversion shut-down on a falling voltage at approximately 14.5
volts.
Page 1 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
INHIBIT FUNCTION
SCREENING
The SMRT Series incorporates an inhibit terminal that can be
used to disable internal switching. The converter is inhibited
when a low (≤ 0.4 V) signal is applied to the inhibit pin. In the
inhibit mode the inhibit pin current requirement is less than ~2
mA. The converter resumes normal operation when a high (≥ 2.4
V) signal or open circuit is applied to the inhibit pin. The open
circuit voltage of the inhibit is 5 to 6 volts.The maximum allowable
voltage applied to the inhibit pin is 10 VDC.
SMRT converters offer the following screening options: Space
Prototype (O), Class H, or Class K. Radiation tolerant to
Radiation Hardness Assurance (RHA) levels of “-” (O), “P”, “R” or
“F”, per MIL-PRF-38534. 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 “Class H and K, MIL-PRF-38534 Screening”
tables for more information.
EMI
SYNCHRONIZATION
An isolated sync input allows this input to be connected to any of
the devices three returns. It can be referenced to the input return
or any of the output returns. Input current into this pin is limited
by a series 1k ohm resistance.
OUTPUT VOLTAGE TRIM
The output voltage of each set can be trimmed up by up to 25%,
or down by up to 45% of nominal (varies by model, see trim
instructions). The following are “sets” of voltages in relation to
trim:
• Triple output models: Main output is one set, the dual outputs are
another set.
• Dual outputs: Each output is a “set.”
One set can be trimmed using the trim pin, the other set can be
trimmed (up only) using the sense pin.
• Single: One set
The SMRT has a built-in EMI input filter which brings the
conducted emissions into compliance with both methods of
MIL-STD-461, revisions C-CE03 and D-/E-CE102.
SENSE
Tight load regulation is maintained via wide bandwidth magnetic
feedback and through the use of remote sense on single output
models and one output (Output “A”) of the dual units. The sense
feature can be used to adjust the output voltage by connecting a
resistor between the sense line and the positive output.
SENSE ADJUST INSTRUCTIONS (UP ONLY)
- DUAL UNITS OUTPUT A ONLY
RADIATION HARDENED
(See trim tables on page 4)
The SMRT DC/DC converters are designed to provide continuous
normal operation through radiation levels associated with space
missions and in tactical and strategic military environments. The
converters will operate normally in radiation environments with up
to 1 x 1012 neutrons per square centimeter neutron fluence,
1011 rads(Si) per second dose rate, and 3x105 rads(Si) total
dose. These levels of radiation tolerance make the SMRT
converters suitable for electronics in programs where operation in
high radiation environments is required.
At the highest dose rate (1011 rads(Si)/sec dose rate) there
will be an upset resulting in a dip in the voltage. This is nondestructive to the unit. The converter will operate through the
upset.
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Page 2 of 17
Rev B – 20080213
5V Dual Sense Adjust: Max. 5.40 V
REXTERNAL = 30 (
Vdesired - 5
)
0.675 - 0.125 Vdesired
12V Dual Sense Adjust: Max. 12.48 V
REXTERNAL = 600 (
5 x Vdesired - 60.42
)
156 - 12.5Vdesired
15V Dual Sense Adjust: Max 15.36 V
REXTERNAL = 600 (
Vdesired - 15
)
38.4 - 2.5Vdesired
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
OPERATING CONDITIONS AND CHARACTERISTICS
Input Voltage Range
• 19 to 56 VDC continuous
Output Power
• up to 35 watts depending on model
Lead Soldering Temperature (10 sec per pin)
• 300°C
Storage Temperature Range (Case)
• -65°C to +150°C
Case Operating Temperature (Tc)
• -55°C to +125°C full power
• -55°C to +135°C absolute
Power Dissipation (Pd)
• 20 to 28 W
Output Voltage Temperature Coefficient
• 100 ppm/°C max
Current Limit
• 125% of full load typical
Isolation
• 100 megohm minimum at 500 V
Audio Rejection
• 50 dB typical
Conversion Frequency
• 300 kHz typical, 270 kHz min., 330 kHz max.
Radiation (will operate through)
• 1x1012 neutrons/cm2 neutron or proton fluence
• Radiation dose rate 1011 rads (Si) /sec
• Total dose up to 300 K rads (Si)
• SEU 60 MeV-cm2/mg
Cross Regulation
• 2.5% typical
• Applies to -VOAUX on triple models only
• Variation of -VOAUX from +PO=80%, -PO=20%
to +PO=20%, -PO=80%
• Referenced to 50%/50% balanced ±VOAUX loads
SYNC AND INHIBIT
Sync In 270-330 kHz typical
• Duty cycle 20% min, 80% max
• 2.5V p-p minimum amplitude
• 10V p-p maximum amplitude
• Can be referenced to input or output return
• If sync is used at lower end of the range, full load
operation is not guaranteed.
Inhibit
• Actve low (output disabled)
INH referenced to input common
Active low 0.4 V max
Inhibit pin current < 2mA
• Open collector (output enabled)
High >3.0V
Not to exceed 10V
Open Collector
Inhibit Pin Voltage
• 5 to 6 V
MECHANICAL AND ENVIRONMENTAL
Size (maximum)
2.705 x 2.205 x 0.400 inches (68.71 x 56.01 x 10.16 mm)
See case S for dimensions.
Weight (maximum)
100 grams maximum
Screening
Space Prototype, Class H, or Class K
Radiation tolerant to Radiation Hardness Assurance (RHA) levels of “-” (O), “P”, “R”, or “F” per MIL-PRF-38534. Interpoint model
numbers use an “O” in the RHA designator position to indicate the “-” (dash) Radiation Hardness Assurance level of MIL-PRF38534, which is defined as “no RHA”.
See “Class H and K, MIL-PRF-38534 Screening” tables for more information.
Available configurations: OO, HP, HR, KP, KR, KF
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Page 3 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
TRIM TABLES
TRIM DOWN
Singles
RTRIM should be connected between the Trim pin and Positive Sense pin.
1
14
2
13
3
Trim 12
4
SMRT Single
11
5
10
Duals
RTRIM should be connected between the Trim B pin and Positive Vout
B pin. This only trims output B, output A can use the sense pin to trim up
only.
9
Sense 8
1
14
2
Vout B 13
3
Trim B 12
4
Triples
RTRIM should be connected between the Trim A pin and Positive Vout
A pin to adjust the Main output.
RTRIM should be connected between the Trim B pin and Positive Vout
B pin to adjust the Auxiliary outputs.
RTRIM
8
14
2
Vout A 13
Trim A 12
3
4
5
10
9
Vout - Vmin
=K(
)
Vnom - Vout
K
VMIN
% OF
RATED
3.3
3500
3.18
96
5.0
4520
4.16
83
12
11030
7.05
58
15
12900
7.65
51
FIGURE 1: TRIM DOWN DIAGRAMS
TRIM UP
Singles
RTRIM should be connected between the Trim pin and Sense Return pin.
Duals
RTRIM should be connected between the Trim B pin and Vout B Return
pin. This only trims output B, output A can use the sense pin to trim up
only.
Triples
RTRIM should be connected between the Trim A pin and Vout A Return pin
to adjust the Main outputs.
RTRIM should be connected between the Trim B pin and Vout B Return pin
to adjust the Auxiliary outputs.
14
13
3
Trim 12
SMRT Single
4
11
5
+Vout B 11
SMRT Triple
Trim B 8
VNOM
2
11
10
9
1
Vout = Desired Voltage; K/Vmin/Vnom come from table below.
1
SMRT Dual
5
10
Sense Return 9
8
1
Vout B Return 14
2
13
3
Trim B 12
4
SMRT Dual
5
RTRIM = K (
11
10
9
Vmax - Vout
)
Vout - Vnom
Vout = Desired Voltage; K/Vmax/Vnom come from table below.
8
1
14
2
Vout A Return 13
Trim A 12
3
4
SMRT Triple
5
11
Vout B Return 10
9
Trim B 8
VNOM
K
VMIN
% OF
RATED
MIN VIN
3.3
3000
3.70
112
22
5.0
3000
6.26
125
22
12
5300
14.69
122
19
15
5300
18.54
124
22
FIGURE 2: TRIM UP DIAGRAMS
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Page 4 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
PIN OUT
Pin
1
2
3
4
5
8
9
10
11
12
13
14
Single Output
Vin
Vin Return
Inhibit
Sync In
Sync Return
Sense
Sense Return
Vout A Return
Vout A
Trim
Vout A
Vout A Return
Dual Output
Vin
Vin Return
Inhibit
Sync In
Sync Return
Sense A
Sense A Return
Vout A Return
Vout A
Trim B
Vout B
Vout B Return
Triple Output
Vin
Vin Return
Inhibit
Sync In
Sync Return
Trim B
Vout B Neg.
Vout B Return
Vout B Pos.
Trim A
Vout A
Vout A Return
1
14
2
13
3
4
TOP VIEW
5
12
11
10
See case S for dimensions.
9
8
FIGURE 3: PIN OUT
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Page 5 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
MODEL NUMBERING KEY
SMRT
28 515 T / KF
Base Model
Input Voltage
Output Voltage
(single or dual Vout for single or dual models
main and aux. Vout for triple models)
Number of Outputs
(S=single, D=dual, T=triple)
Screening
(OO-prototype, HP, HR, KP, KR, KF)
MODEL SELECTION
SMRT28
Base model
/
Vout value
number of outputs
screening
Choose one from each of the following rows
Vout value
Number of outputs
Screening
singles: 3.3, 5, 12, 15
duals: 5,12,15
triples*: 3.312, 3.315, 512, 515
“R” = decimal point, 3R3 = 3.3VDC
S (single), D (dual), T (triple)
OO** - Space prototype, HP, HR, KP, KR, KF
* for triple models “3.3” and “5” indicates the main voltage, “12” or “15” indicate the ± auxiliary voltages.
**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”
www.craneae.com
Page 6 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
Electrical Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
SINGLE OUTPUT MODELS
PARAMETER
SMRT283R3S
CONDITIONS
OUTPUT VOLTAGE
OUTPUT CURRENT4
OUTPUT POWER4
OUTPUT RIPPLE
LINE REGULATION
INPUT VOLTAGE6, 7
INPUT CURRENT
INPUT RIPPLE CURRENT8
STEP LOAD RESPONSE5
STEP LINE RESPONSE1
START-UP
MAX
MIN
TYP
MAX
3.23
3.30
3.37
4.90
5.00
5.10
UNITS
VDC
—
—
6.97
0
—
6.0
A
—
23
0
—
30
W
10 KHZ - 20 MHZ
—
—
200
—
—
200
VIN = 19, 28, 50 VDC
—
5
30
—
5
30
mV
—
5
40
—
5
40
mV
ALL CONDITIONS OF
LINE, LOAD, AGING,
TEMP AND RADIATION
3.0
—
3.6
4.7
—
5.3
VOUT
CONTINUOUS
mV p-p
19
28
56
19
28
56
VDC
TRANSIENT 100 ms
0
—
80
0
—
80
V
INHIBITED6
—
—
50
—
—
50
NO LOAD
—
—
110
—
—
10 kHz - 20 MHz
—
10
50
—
10
65
—
—
66
—
—
%
POWER DISSIPATION2
—
—
28
—
—
28
W
TRANSIENT
-450
—
RECOVERY
—
—
-500
—
RECOVERY
—
—
DELAY3
NO LOAD AND FULL
—
—
35
—
—
—
50
—
5000
—
19 - 56 - 19 VIN
TRANSIENT
OVERSHOOT3
CAPACITIVE LOAD1
TYP
0
EFFICIENCY
LOAD FAULT
MIN
VIN = 19 TO 56 VDC
LOAD REGULATION
TOTAL REGULATION
SMRT2805S
UNCONDITIONALLY
STABLE, START-UP
DELAY INCREASED
TC = 25°C
—
—
450
-450
3 —
500
-500
4 —
110
50
mA
mA p-p
—
450
—
3
—
500
—
4
ms
—
25
ms
—
50
mV pk
—
5000
mV pk
ms
mV pk
μF
Notes
1. Guaranteed by design, not tested.
2. Maximum power dissipation when output is shorted.
3. Measured from release of inhibit or input voltage step.
4. Minimum value pre-load on all outputs of 2% of full load should be used on all outputs at TID of 100k rads(Si) and greater to ensure tight regulation
over full input voltage range.
5. Half load to/from full load; Transition time ≥ 10 μs.
6. Converter should not be inhibited or operated below 19 Vin above 5x104 rads (Si) total dose.
7. If 3.3S model is trimmed to the high end of its range, then minimum Vin = 22 V.
8. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-CE-102. The actual value of input ripple current
is much less, the limit in the characteristic table is based on measurement resolution.
www.craneae.com
Page 7 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
Electrical Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
SINGLE OUTPUT MODELS
PARAMETER
SMRT2812S
CONDITIONS
OUTPUT VOLTAGE
OUTPUT CURRENT4
OUTPUT POWER4
OUTPUT RIPPLE
LINE REGULATION
INPUT VOLTAGE6, 7
INPUT CURRENT
INPUT RIPPLE CURRENT8
STEP LOAD RESPONSE5
STEP LINE RESPONSE1
START-UP
MAX
11.76
12.00
12.24
—
—
2.92
—
35
10 KHZ - 20 MHZ
—
—
VIN = 19, 28, 50 VDC
—
5
—
5
10.9
—
13.1
ALL CONDITIONS OF
LINE, LOAD, AGING,
TEMP AND RADIATION
CONTINUOUS
MIN
TYP
MAX
14.70
15.00
15.30
UNITS
VDC
—
—
2.33
A
0
—
35
W
200
—
—
180
30
—
5
30
mV
40
—
5
40
mV
14.0
—
16.0
Vout
19
28
56
VDC
V
mV p-p
19
28
56
TRANSIENT 100 ms
0
—
80
0
—
80
INHIBITED6
—
—
50
—
—
50
NO LOAD
—
—
110
—
—
10 kHz - 20 MHz
—
10
50
—
10
75
—
—
75
—
—
%
POWER DISSIPATION2
—
—
20
—
—
20
W
TRANSIENT
-575
—
RECOVERY
—
—
-700
—
RECOVERY
—
—
DELAY3
NO LOAD AND FULL
—
19 - 56 - 19 VIN
TRANSIENT
OVERSHOOT3
CAPACITIVE LOAD1
TYP
0
EFFICIENCY
LOAD FAULT
MIN
VIN = 19 TO 56 VDC
LOAD REGULATION
TOTAL REGULATION
SMRT2815S
UNCONDITIONALLY
STABLE, START-UP
DELAY INCREASED
TC = 25°C
—
—
—
—
—
575
-575
3 —
700
-700
4 —
25
—
120
—
5000
—
110
50
mA
mA p-p
—
575
—
3
—
700
—
4
ms
25
ms
—
—
—
150
5000
mV pk
ms
mV pk
mV pk
μF
Notes
1. Guaranteed by design, not tested.
2. Maximum power dissipation when output is shorted.
3. Measured from release of inhibit or input voltage step.
4. Minimum value pre-load on all outputs of 2% of full load should be used on all outputs at TID of 100k rads(Si) and greater to ensure tight regulation
over full input voltage range.
5. Half load to/from full load; Transition time ≥ 10 μs.
6. Converter should not be inhibited or operated below 19 Vin above 5x104 rads (Si) total dose.
7. If 3.3S model is trimmed to the high end of its range, then minimum Vin = 22 V.
8. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-CE-102. The actual value of input ripple current
is much less, the limit in the characteristic table is based on measurement resolution.
www.craneae.com
Page 8 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
Electrical Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
DUAL OUTPUT MODELS
PARAMETER
OUTPUT VOLTAGE
OUTPUT RIPPLE
SMRT2812D
SMRT2815D
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
VOUT A
4.90
5.00
5.10
11.76
12.00
VOUT B
4.90
5.00
5.10
11.76
12.00
OUTPUT CURRENT2, 5
OUTPUT POWER2, 5
VIN = 19 TO 56 VDC
SMRT2805D
MIN
TYP
MAX
12.24
14.70
15.00
15.30
12.24
14.70
15.00
15.30
—
—
3.0
0
—
1.46
—
—
1.17
VOUT A
0
—
15
0
—
17.5
0
—
17.5
VOUT B
0
—
15
0
—
17.5
0
—
17.5
TOTAL
0
—
30
0
—
35
0
—
35
—
UNITS
VDC
A
W
10 KHZ - 20 MHZ
—
200
—
—
200
—
—
180
VIN = 19 TO 50 VDC
—
—
30
—
5
25
—
5
30
mV
LOAD REGULATION
VIN = 19, 28, 50 VDC
—
5
40
—
5
50
—
5
40
mV
TOTAL REGULATION
ALL CONDITIONS OF
LINE, LOAD, AGING,
TEMP AND RADIATION
4.6
—
5.4
10.9
—
14.0
—
16.0
Vout
CONTINUOUS
LINE REGULATION
INPUT VOLTAGE7, 8
13.1
mV p-p
19
28
56
19
28
56
19
28
56
VDC
TRANSIENT 100 ms
0
—
80
0
—
80
0
—
80
V
INHIBITED7
—
—
50
—
—
50
—
—
50
NO LOAD
—
—
110
—
—
100
—
—
10 kHz - 20 MHz
—
10
50
—
10
150
—
10
66
—
—
75
—
—
75
—
—
%
LOAD FAULT
POWER DISSIPATION3
—
—
28
—
—
20
—
—
20
W
STEP LOAD
RESPONSE6
TRANSIENT
-450
RECOVERY
—
—
STEP LINE
RESPONSE1
19 - 56 - 19 VIN
TRANSIENT
-500
—
—
—
INPUT CURRENT
INPUT RIPPLE
CURRENT9
EFFICIENCY
RECOVERY
START-UP
450
-450
3 —
500
-1000
4 —
—
—
—
—
450
-575
2 —
1000
-700
3 —
—
50
575
mA
mA p-p
mV pk
—
3
—
700
ms
—
4
ms
25
ms
mv pk
DELAY4
NO LOAD AND FULL
OVERSHOOT4
CAPACITIVE LOAD1
—
110
UNCONDITIONALLY
STABLE, START-UP
DELAY INCREASED
TC = 25°C
—
—
25
—
—
—
50
—
5000
—
—
—
—
—
—
20
—
350
—
5000
—
—
—
—
150
5000
mV pk
μF
Notes
1. Guaranteed by design, not tested.
2. The specified maximum current/power is available from each output.
3. Maximum power dissipation when both outputs are shorted simultaneously.
4. Measured from release of inhibit or input voltage step.
5. A minimum output load on all outputs of 2% of full load should be used on all outputs at TID of 100k rad(Si) or greater to ensure tight regulation over the full
input voltage range.
6. Half load to/from full load; Transition time ≥ 10 μs.
7. Converter should not be inhibited or operated below 19 Vin above 5x104 rads (Si) total dose.
8. If 3.3S model is trimmed to the high end of its range, then minimum Vin = 22 V.
9. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-CE-102. The actual value of input ripple current is much less, the limit in
the characteristic table is based on measurement resolution.
www.craneae.com
Page 9 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
Electrical Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
TRIPLE OUTPUT MODEL – SMRT283R312T
PARAMETER
OUTPUT VOLTAGE
3.3
CONDITIONS
MIN
TYP
MAX MIN
TYP
MAX
+ VOUT
3.23
3.30
3.37
12.00
12.24
- VOUT
—
—
12.00
-12.42
—
—
±0.625
±1
OUTPUT CURRENT5, 10
OUTPUT POWER10
±12
11.76
— -11.58
3 0
VDC
A
VIN = 19 TO 56 VDC
0
—
9.9 0
±7.5
10 KHZ - 20 MHZ
—
—
200 —
—
150
+ VOUT
—
—
30 —
5
30
- VOUT
—
—
— —
10
70
LOAD REGULATION
NO LOAD TO FULL
+ VOUT
—
5
40
—
5
40
VIN = 19, 28, 50 VDC
- VOUT
—
—
— —
10
300
TOTAL REGULATION
ALL CONDITIONS OF
LINE, LOAD, AGING,
TEMP AND RADIATION
3.0
—
CONTINUOUS
19
28
56
TRANSIENT 100 ms
0
—
80
INHIBITED7
—
NO LOAD
—
—
10 kHz - 20 MHz
—
10
50 —
10
50
mA p-p
68
—
— 68
—
—
%
—
—
28 —
—
OUTPUT RIPPLE
LINE REGULATION
VIN = 19 TO 50 VDC
INPUT VOLTAGE7, 8
INPUT CURRENT
INPUT RIPPLE CURRENT9
POWER DISSIPATION2
—
STEP LOAD RESPONSE6
TRANSIENT
-450
RECOVERY
—
—
STEP LINE RESPONSE1
19 - 56 - 19 VIN
TRANSIENT
-500
—
—
—
RECOVERY
START-UP
mV
—
3.6 ±10.9
—
±13.1
VOUT
19
28
56
VDC
0
—
80
V
50 —
110 —
450
-450
3 —
500
-750
4 —
—
—
—
50
110
28
450
mA
W
mV pk
—
3
—
750
ms
—
4
ms
25
ms
mV pk
DELAY3
NO LOAD AND FULL
OVERSHOOT3
CAPACITIVE LOAD1
W
mV p-p
mV
EFFICIENCY4
LOAD FAULT
15
UNITS
UNCONDITIONALLY
STABLE, START-UP
DELAY INCREASED
TC = 25°C
—
—
35
—
—
—
0
50
—
0
120
5000 —
—
1000
—
—
mV pk
μF
Notes
1. Guaranteed by design, not tested.
2. Maximum power dissipation when all outputs are shorted simultaneously.
3. Measured from release of inhibit or input voltage step.
4. Efficiency measured with all outputs at full load.
5. Up to 1 A is available from either auxiliary output provided the total auxiliary output power does not exceed 15 watts.
6. Half load to/from full load; Transition time ≥ 10 μs.
7. Converter should not be inhibited or operated below 19 Vin above 5x104 rads (Si) total dose.
8. If 3.3S model is trimmed to the high end of its range, then minimum Vin = 22 V.
9. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-CE-102. The actual value of input ripple current is
much less, the limit in the characteristic table is based on measurement resolution.
10. Minimum value pre-load on all outputs of 2% of full load should be used on all outputs at TID of 100k rads(Si) and greater to ensure tight regulation
over full input voltage range.
www.craneae.com
Page 10 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
Electrical Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
TRIPLE OUTPUT MODEL – SMRT283R315T
PARAMETER
OUTPUT VOLTAGE
3.3
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
+ VOUT
3.23
3.30
3.37
14.70
15.00
15.30
- VOUT
—
—
-15.00
-15.53
—
—
OUTPUT CURRENT5, 10
OUTPUT POWER10
±15
— -14.48
3
0
±0.5
±0.8
VIN = 19 TO 56 VDC
0
—
9.9
0
±7.5
10 KHZ - 20 MHZ
—
—
200
—
—
150
+ VOUT
—
—
30
—
5
30
- VOUT
—
—
— —
10
70
LOAD REGULATION
NO LOAD TO FULL
+ VOUT
—
5
40
5
40
VIN = 19, 28, 50 VDC
- VOUT
—
—
TOTAL REGULATION
ALL CONDITIONS OF
LINE, LOAD, AGING,
TEMP AND RADIATION
3.0
—
3.6
CONTINUOUS
19
28
TRANSIENT 100 ms
0
—
INHIBITED7
—
NO LOAD
—
—
10 kHz - 20 MHz
—
68
—
—
OUTPUT RIPPLE
LINE REGULATION
VIN = 19 TO 50 VDC
INPUT VOLTAGE7, 8
INPUT CURRENT
INPUT RIPPLE CURRENT9
POWER DISSIPATION2
—
W
mV p-p
mV
10
300
±10.9
—
±13.1
VOUT
56
19
28
56
VDC
80
0
—
80
V
—
—
—
10
50
—
10
50
mA p-p
—
—
68
—
—
%
—
—
-450
RECOVERY
—
—
STEP LINE RESPONSE1
19 - 56 - 19 VIN
TRANSIENT
-500
—
—
—
RECOVERY
— —
50
TRANSIENT
—
28
450
-450
3 —
500
-750
4 —
—
—
50
110
28
450
—
3
—
750
—
4
mA
W
mV pk
ms
mV pk
ms
DELAY3
NO LOAD AND FULL
OVERSHOOT3
CAPACITIVE LOAD1
A
110
STEP LOAD RESPONSE6
START-UP
VDC
mV
EFFICIENCY4
LOAD FAULT
—
15
UNITS
UNCONDITIONALLY
STABLE, START-UP
DELAY INCREASED
TC = 25°C
—
—
35
—
—
—
0
50
—
0
150
5000
—
—
1000
—
—
25
ms
mV pk
μF
Notes
1. Guaranteed by design, not tested.
2. Maximum power dissipation when all outputs are shorted simultaneously.
3. Measured from release of inhibit or input voltage step.
4. Efficiency measured with all outputs at full load.
5. Up to 800 mA is available from either auxiliary output provided the total auxiliary output power does not exceed 15 watts.
6. Half load to/from full load; Transition time ≥ 10 μs.
7. Converter should not be inhibited or operated below 19 Vin above 5x104 rads (Si) total dose.
8. If 3.3S model is trimmed to the high end of its range, then minimum Vin = 22 V.
9. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-CE-102. The actual value of input ripple current is
much less, the limit in the characteristic table is based on measurement resolution.
10. Minimum value pre-load on all outputs of 2% of full load should be used on all outputs at TID of 100k rads(Si) and greater to ensure tight regulation
over full input voltage range.
www.craneae.com
Page 11 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
Electrical Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
TRIPLE OUTPUT MODEL – SMRT28512T
PARAMETER
OUTPUT VOLTAGE
5
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
+ VOUT
4.90
5.00
5.10
11.76
12.00
12.24
- VOUT
—
—
12.00
-12.42
—
—
±1
OUTPUT CURRENT5, 10
OUTPUT POWER10
±12
— -11.58
3.0
0
±0.63
VIN = 19 TO 56 VDC
0
—
15
0
±7.5
10 KHZ - 20 MHZ
—
—
200
—
—
150
+ VOUT
—
—
30
—
5
30
- VOUT
—
—
— —
20
70
LOAD REGULATION
NO LOAD TO FULL
+ VOUT
—
5
40
5
40
VIN = 19, 28, 50 VDC
- VOUT
—
—
TOTAL REGULATION
ALL CONDITIONS OF
LINE, LOAD, AGING,
TEMP AND RADIATION
4.7
—
5.3
CONTINUOUS
19
28
TRANSIENT 100 ms
0
—
INHIBITED7
—
NO LOAD
—
—
10 kHz - 20 MHz
—
68
—
—
OUTPUT RIPPLE
LINE REGULATION
VIN = 19 TO 50 VDC
INPUT VOLTAGE7, 8
INPUT CURRENT
INPUT RIPPLE CURRENT9
POWER DISSIPATION2
—
W
mV p-p
mV
10
300
±10.9
—
±13.1
VOUT
56
19
28
56
VDC
80
0
—
80
V
—
—
—
10
50
—
10
50
mA p-p
—
—
68
—
—
%
—
—
-450
RECOVERY
—
—
STEP LINE RESPONSE1
19 - 56 - 19 VIN
TRANSIENT
-500
—
—
—
RECOVERY
— —
50
TRANSIENT
—
25
450
-450
3 —
500
-750
4 —
—
—
50
110
25
450
mA
W
mV pk
—
3
—
750
ms
—
4
ms
25
ms
mV pk
DELAY3
NO LOAD AND FULL
OVERSHOOT3
CAPACITIVE LOAD1
A
110
STEP LOAD RESPONSE6
START-UP
VDC
mV
EFFICIENCY4
LOAD FAULT
—
15
UNITS
UNCONDITIONALLY
STABLE, START-UP
DELAY INCREASED
TC = 25°C
—
—
25
—
—
—
0
50
—
0
120
5000
—
—
1000
—
—
mV pk
μF
Notes
1. Guaranteed by design, not tested.
2. Maximum power dissipation when all outputs are shorted simultaneously.
3. Measured from release of inhibit or input voltage step.
4. Efficiency measured with all outputs at full load.
5. Up to 1 A is available from either auxiliary output provided the total auxiliary output power does not exceed 15 watts.
6. Half load to/from full load; Transition time ≥ 10 μs.
7. Converter should not be inhibited or operated below 19 Vin above 5x104 rads (Si) total dose.
8. If 3.3S model is trimmed to the high end of its range, then minimum Vin = 22 V.
9. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-CE-102. The actual value of input ripple current is much less,
the limit in the characteristic table is based on measurement resolution.
10. Minimum value pre-load on all outputs of 2% of full load should be used on all outputs at TID of 100k rads(Si) and greater to ensure tight regulation over full
input voltage range.
www.craneae.com
Page 12 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
Electrical Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
TRIPLE OUTPUT MODEL – SMRT28515T
PARAMETER
OUTPUT VOLTAGE
5
CONDITIONS
MIN
TYP
MAX MIN
TYP
MAX
+ VOUT
4.92
5.00
5.08
15.00
15.23
- VOUT
—
—
-15.00
-15.30
—
—
OUTPUT CURRENT5, 10
OUTPUT POWER10
±15
14.77
— -14.70
3.0 0
±0.5
UNITS
VDC
±0.75
A
15
W
VIN = 19 TO 56 VDC
0
—
15 0
±7.5
10 KHZ - 20 MHZ
—
—
200 —
—
+ VOUT
—
5
25
—
—
25
- VOUT
—
—
— —
20
35
LOAD REGULATION
NO LOAD TO FULL
+ VOUT
—
5
50
5
50
VIN = 19, 28, 50 VDC
- VOUT
—
—
— —
10
500
TOTAL REGULATION
ALL CONDITIONS OF
LINE, LOAD, AGING,
TEMP AND RADIATION
4.7
—
5.3 ±14
—
±16.0
VOUT
CONTINUOUS
OUTPUT RIPPLE
200
mV p-p
LINE REGULATION
VIN = 19 TO 50 VDC
INPUT VOLTAGE7, 8
INPUT CURRENT
INPUT RIPPLE CURRENT9
mV
19
28
56
19
28
56
VDC
TRANSIENT 100 ms
0
—
80
0
—
80
V
INHIBITED7
—
—
50 —
—
50
V
mA
NO LOAD
—
—
110 —
—
110
10 kHz - 20 MHz
—
10
150 —
10
150
EFFICIENCY4
LOAD FAULT
STEP LOAD RESPONSE6
STEP LINE RESPONSE1
START-UP
POWER DISSIPATION2
—
— 70
—
—
%
—
—
25 —
—
25
W
-250
—
RECOVERY
—
—
-500
—
19 - 56 - 19 VIN
TRANSIENT
RECOVERY
—
—
DELAY3
NO LOAD AND FULL
—
—
—
0
—
—
UNCONDITIONALLY
STABLE, START-UP
DELAY INCREASED
TC = 25°C
mA p-p
70
TRANSIENT
OVERSHOOT3
CAPACITIVE LOAD1
—
mV
250
-350
1 —
500
-750
1.5 —
—
350
—
1
—
750
mV pk
—
1.5
ms
20
ms
25
—
—
200
—
0
350
5000 —
—
1000
mV pk
ms
mV pk
μF
Notes
1. Guaranteed by design, not tested.
2. Maximum power dissipation when all outputs are shorted simultaneously.
3. Measured from release of inhibit or input voltage step.
4. Efficiency measured with all outputs at full load.
5. Up to 750 mA is available from either auxiliary output provided the total auxiliary output power does not exceed 15 watts.
6. Half load to/from full load; Transition time ≥ 10 μs.
7. Converter should not be inhibited or operated below 19 Vin above 5x104 rads (Si) total dose.
8. If 3.3S model is trimmed to the high end of its range, then minimum Vin = 22 V.
9. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-CE-102. The actual value of input ripple current is
much less, the limit in the characteristic table is based on measurement resolution.
10. Minimum value pre-load on all outputs of 2% of full load should be used on all outputs at TID of 100k rads(Si) and greater to ensure tight regulation
over full input voltage range.
www.craneae.com
Page 13 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converter Cases
28 VOLT INPUT – 35 WATT
BOTTOM VIEW CASE S
Angled corner
indicates pin 1
6 x 0.135 dia.
1.675
3x 2.205 max (56.01)
3x 2.075 (52.68)
12 x 0.040 dia.
2x 1.700 (43.18)
14
1
2x 1.500 (38.10)
13
2
2x 1.300 (33.02)
12
3
2x 1.100 (27.94)
11
4
2x 0.900 (22.86)
10
5
0.700 (17.78)
9
0.500 (12.70)
8
3x 0.125 (3.15)
0.262
Seal hole: 0.123 ±0.002 (3.124 ±0.05)
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
Cover Kovar/Nickel
Pins
#52 alloy, ceramic seal
Case S, Rev B, 20060711
Please refer to the numerical dimensions for accuracy. All information is believed to be accurate,
but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make
changes in products or specifications without notice.
Copyright © 1999-2006 Interpoint Corp. All rights reserved.
FIGURE 4: CASE S
www.craneae.com
Page 14 of 17
Rev B – 20080213
2x 2.705 max (68.71)
2x 2.550 (64.77)
2x 1.550 (39.37)
0.00
2x 0.150 (3.81)
12 x 0.270 max (6.86)
7x 0.220 (5.59)
0.050 (1.27)
0.00
0.400 max (10.16)
0.00
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
CLASS H AND K, MIL-PRF-38534 ELEMENT EVALUATION
COMPONENT-LEVEL TEST
PERFORMED
SPACE PROTOTYPE (O)
NON-QML1
M/S2
P3
CLASS H
QML
M/S2
CLASS K
QML
P3
M/S2
P3
Element Electrical
yes
no
yes
yes
yes
yes
Element Visual
no
no
yes
yes
yes
yes
Internal Visual
no
N/A
yes
N/A
yes
N/A
Temperature Cycling
no
no
no
no
yes
yes
Constant Acceleration
no
no
no
no
yes
yes
Interim Electrical
no
N/A
no
N/A
yes
N/A
Burn-in
no
N/A
no
N/A
yes
N/A
Post Burn-in Electrical
no
N/A
no
N/A
yes
N/A
Steady State Life
no
N/A
no
N/A
yes
N/A
Voltage Conditioning Aging
N/A
no
N/A
no
N/A
yes
Visual Inspection
no
no
N/A
no
N/A
yes
Final Electrical
no
no
yes
yes
yes
yes
Wire Bond Evaluation4
no
no
yes
yes
yes
yes
SEM
no
N/A
no
N/A
yes
N/A
SLAM™/C-SAM:
Input capacitors only
(Add’l test, not req. by H or K)
no
no
no
yes
no
yes
Notes:
1. Non-QML products do not meet all of the requirements of MIL-PRF-38534.
2. M/S = Active components (Microcircuit and Semiconductor Die)
3. P = Passive components
4. Not applicable to EMI filters that have no wirebonds.
Definitions:
Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534
SEM: Scanning Electron Microscopy
SLAM™: Scanning Laser Acoustic Microscopy
C-SAM: C - Mode Scanning Acoustic Microscopy
www.craneae.com
Page 15 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
CLASS H AND K, MIL-PRF-38534 ENVIRONMENTAL SCREENING
END ITEM-LEVEL TEST
PERFORMED
SPACE PROTOTYPE (O)
NON-QML1
CLASS H
QML
CLASS K
QML
Non-destruct bond pull2
Method 2023
no
yes3
yes
Pre-cap Inspection
Method 2017, 2032
yes
yes
yes
Temperature Cycle (10 times)
Method 1010, Cond. C, -65°C to 150°C, ambient
yes
yes
yes
Constant Acceleration
Method 2001, 3000 g
yes
yes
yes
PIND Test
Method 2020, Cond. A
no
yes3
yes
Pre burn-in test
yes
yes
yes
Burn-in
Method 1015, 125°C case, typical
96 hours
160 hours
2 x 160 hours (includes mid-BI test)
yes
no
no
no
yes
no
no
no
yes
Final Electrical Test MIL-PRF-38534
Group A, Subgroups 1 through 6
-55°C, +25°C, +125°C case
yes
yes
yes
Radiography
Method 2012
N/A
N/A
N/A
Post Radiography Electrical Test
Room temperature
N/A
N/A
yes3
Hermeticity Test
Fine Leak, Method 1014, Cond. A
Gross Leak, Method 1014, Cond. C
yes
yes
yes
yes
yes
yes
Final visual inspection
Method 2009
yes
yes
yes
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534.
Notes:
1. Space Prototype (O), non-QML products, do not meet all of the requirements of MIL-PRF-38534.
2. Not applicable to EMI filters that have no wirebonds.
3. Not required by DSCC but performed to assure product quality.
www.craneae.com
Page 16 of 17
Rev B – 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
CLASS H AND K, MIL-PRF-38534 RADIATION ASSURANCE
ENVIRONMENTAL SCREENING LEVELS
SPACE
PROTOTYPE (O)
NON-QML3
CLASS H
CLASS K
QML
QML
OO
N/A
N/A
P: Radiation tolerant–Tested lots up to 30 K
Rads (Si) total dose
SEU guarantee up to 40 MeV
N/A
HP4
KP4
R: Radiation tolerant–Tested lots up to 100 K
Rads (Si) total dose
SEU guarantee up to 40 MeV
N/A
HR4
KR4
F: Radiation tolerant–Tested lots up to 300 K
Rads (Si) total dose SEU guarantee up to 60
MeV
N/A
N/A
KF4
RADIATION HARDNESS
ASSURANCE LEVELS
O2: Standard, no radiation guarantee
Notes:
1. Our EMI filters are designed exclusively with passive components providing maximum tolerance for space environment requirements.
2. Interpoint model numbers use an “O” in the RHA designator position to indicate the “-” (dash) Radiation Hardness Assurance level of MILPRF-38534, which is defined as “no RHA”.
3. Space Prototype (O), non-QML, products do not meet all of the requirements of MIL-PRF-38534.
4. Redmond site, Interpoint, has a Radiation Hardness assurance plan on file with DSCC. Our SMD products with RHA “P”, “R," "F" and "H"
code meet DSCC requirements.
SMRT Single, Dual and Triple Rev B - 20080213. This revision supercedes all previous releases. All technical information is believed to be accurate,
but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice.
SMRT Series is a trademark of Interpoint. Copyright © 1999 - 2008 Interpoint Corporation. All rights reserved. www.craneae.com
Page 17 of 17