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Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT - 35 WATT
FEATURES
* * * * * * * -55C to +125C operation 19 to 56 VDC input 80 V for 100 ms transient protection Dual Magnetic feedback Inhibit function and output trim Indefinite short circuit protection Radiation tolerant to 1 x 1012 protons/cm2 neutron or proton fluence 1011 rads(Si)/sec dose rate 3 x 105 rads(Si) total dose 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) MODELS
VDC OUTPUT SINGLE 3.3 5 12 15 DUAL 5 12 15
* Topology - Two-Phase Flyback
TRIPLE +3.3 & 12 +3.3 & 15 +5 & 12 +5 & 15
DESCRIPTION
The SMRT SeriesTM 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 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 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:
* 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.
Crane Aerospace & Electronics Electronics Group (Interpoint Brand) PO Box 97005 * Redmond WA 98073-9705 425.882.3100 * electronics@craneae.com www.craneae.com
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
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.
SCREENING
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. 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.
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
SENSE ADJUST INSTRUCTIONS (UP ONLY) - DUAL UNITS OUTPUT A ONLY
(See trim tables on page 4) 5V Dual Sense Adjust: Max. 5.40 V REXTERNAL = 30 ( Vdesired - 5 ) 0.675 - 0.125 Vdesired
RADIATION HARDENED
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.
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
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Page 2 of 17 Rev B - 20080213
Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT - 35 WATT
Input Voltage Range * 19 to 56 VDC continuous Output Power * up to 35 watts depending on model Lead Soldering Temperature (10 sec per pin) * 300C Storage Temperature Range (Case) * -65C to +150C Case Operating Temperature (Tc) * -55C to +125C full power * -55C to +135C 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
OPERATING CONDITIONS AND CHARACTERISTICS
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. 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. 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 Vout - Vmin =K( ) Vnom - Vout
1 2 3 4 5 SMRT Single 14 13 Trim 12 11 10 9 Sense 8
1 2 3 4 5 SMRT Dual
14 Vout B 13 Trim B 12 11 10 9 8
1 2 3 4 5 SMRT Triple
14 Vout A 13 Trim A 12 +Vout B 11 10 9 Trim B 8
Vout = Desired Voltage; K/Vmin/Vnom come from table below.
FIGURE 1: TRIM DOWN DIAGRAMS
VNOM
3.3 5.0 12 15
K
3500 4520 11030 12900
VMIN
3.18 4.16 7.05 7.65
% OF RATED
96 83 58 51
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.
1 2 3 4 5 SMRT Single
14 13 Trim 12 11 10 Sense Return 9 8
1 2 3 4 5 SMRT Dual
Vout B Return 14 13 Trim B 12 11 10 9 8
RTRIM = K (
Vmax - Vout ) Vout - Vnom
Vout = Desired Voltage; K/Vmax/Vnom come from table below.
1 2 3 4 5 SMRT Triple
14 Vout A Return 13 Trim A 12 11 Vout B Return 10 9 Trim B 8
VNOM
3.3 5.0 12 15
K
3000 3000 5300 5300
VMIN
3.70 6.26 14.69 18.54
% OF RATED
112 125 122 124
MIN VIN
22 22 19 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 2 3 4 5
See case S for dimensions.
14 13 TOP VIEW 12 11 10 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 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) 28 515 T / 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"
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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: -55C to +125C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
SINGLE OUTPUT MODELS
PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT4 OUTPUT POWER4 OUTPUT RIPPLE LINE REGULATION LOAD REGULATION TOTAL REGULATION ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION CONTINUOUS TRANSIENT 100 ms INPUT CURRENT INPUT RIPPLE CURRENT8 EFFICIENCY LOAD FAULT STEP LOAD RESPONSE5 STEP LINE RESPONSE1 POWER DISSIPATION2 TRANSIENT RECOVERY 19 - 56 - 19 VIN TRANSIENT RECOVERY START-UP DELAY3 NO LOAD AND FULL OVERSHOOT3 CAPACITIVE LOAD1 UNCONDITIONALLY STABLE, START-UP DELAY INCREASED TC = 25C INHIBITED6 NO LOAD 10 kHz - 20 MHz VIN = 19 TO 56 VDC 10 KHZ - 20 MHZ VIN = 19, 28, 50 VDC CONDITIONS MIN
SMRT283R3S
TYP 3.30 -- -- -- 5 5 -- 28 -- -- -- 10 -- -- -- -- -- -- -- -- -- MAX 3.37 6.97 23 200 30 40 3.6 56 80 50 110 50 -- 28 450 MIN 4.90 0 0 -- -- -- 4.7 19 0 -- -- -- 66 -- -450 3.23 -- 0 -- -- -- 3.0 19 0 -- -- -- 65 -- -450 -- -500 -- -- -- --
SMRT2805S
TYP 5.00 -- -- -- 5 5 -- 28 -- -- -- 10 -- -- -- -- -- -- -- -- -- MAX 5.10 6.0 30 200 30 40 5.3 56 80 50 110 50 -- 28 450 3 500 4 25 50 5000 mA mA p-p % W mV pk ms mV pk ms ms mV pk F UNITS VDC A W mV p-p mV mV VOUT VDC V
INPUT VOLTAGE6, 7
3-- 500 -500
4-- 35 50 5000 -- -- --
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 s. 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.
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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: -55C to +125C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
SINGLE OUTPUT MODELS
PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT4 OUTPUT POWER4 OUTPUT RIPPLE LINE REGULATION LOAD REGULATION TOTAL REGULATION ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION CONTINUOUS TRANSIENT 100 ms INPUT CURRENT INPUT RIPPLE CURRENT8 EFFICIENCY LOAD FAULT STEP LOAD RESPONSE5 STEP LINE RESPONSE1 POWER DISSIPATION2 TRANSIENT RECOVERY 19 - 56 - 19 VIN TRANSIENT RECOVERY START-UP DELAY3 NO LOAD AND FULL OVERSHOOT3 CAPACITIVE LOAD1 UNCONDITIONALLY STABLE, START-UP DELAY INCREASED TC = 25C INHIBITED6 NO LOAD 10 kHz - 20 MHz VIN = 19 TO 56 VDC 10 KHZ - 20 MHZ VIN = 19, 28, 50 VDC CONDITIONS MIN
SMRT2812S
TYP 12.00 -- -- -- 5 5 -- 28 -- -- -- 10 -- -- -- -- -- -- -- -- -- MAX 12.24 2.92 35 200 30 40 13.1 56 80 50 110 50 -- 20 575 MIN 11.76 -- 0 -- -- -- 10.9 19 0 -- -- -- 75 -- -575 -- -700 -- -- -- --
SMRT2815S
TYP 15.00 -- -- -- 5 5 -- 28 -- -- -- 10 -- -- -- -- -- -- -- -- -- MAX 15.30 2.33 35 180 30 40 16.0 56 80 50 110 50 -- 20 575 3 700 4 25 150 5000 mA mA p-p % W mV pk ms mV pk ms ms mV pk F UNITS VDC A W mV p-p mV mV Vout VDC V 14.70 -- 0 -- -- -- 14.0 19 0 -- -- -- 75 -- -575
INPUT VOLTAGE6, 7
3-- 700 -700
4-- 25 120 5000 -- -- --
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 s. 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.
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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: -55C to +125C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
DUAL OUTPUT MODELS
PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT2, 5 OUTPUT POWER2, 5 VIN = 19 TO 56 VDC VOUT A VOUT B TOTAL OUTPUT RIPPLE LINE REGULATION LOAD REGULATION TOTAL REGULATION 10 KHZ - 20 MHZ VIN = 19 TO 50 VDC VIN = 19, 28, 50 VDC ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION CONTINUOUS TRANSIENT 100 ms INPUT CURRENT INHIBITED7 NO LOAD INPUT RIPPLE CURRENT9 EFFICIENCY LOAD FAULT STEP LOAD RESPONSE6 STEP LINE RESPONSE1 POWER DISSIPATION3 TRANSIENT RECOVERY 19 - 56 - 19 VIN TRANSIENT RECOVERY START-UP DELAY4 NO LOAD AND FULL OVERSHOOT4 CAPACITIVE LOAD1 UNCONDITIONALLY STABLE, START-UP DELAY INCREASED TC = 25C -- -- -- 10 kHz - 20 MHz CONDITIONS VOUT A VOUT B MIN 4.90 4.90 -- 0 0 0 -- -- -- 4.6 19 0 -- -- -- 66 -- -450 -- -500 --
SMRT2805D
TYP 5.00 5.00 -- -- -- -- -- -- 5 -- 28 -- -- -- 10 -- -- -- -- -- -- -- -- -- MAX 5.10 5.10 3.0 15 15 30 200 30 40 5.4 56 80 50 110 50 -- 28 450 MIN
SMRT2812D
TYP 12.00 12.00 -- -- -- -- -- 5 5 -- 28 -- -- -- 10 -- -- -- -- -- -- -- -- -- MAX 12.24 12.24 1.46 17.5 17.5 35 200 25 50 13.1 56 80 50 100 150 -- 20 450 MIN 11.76 11.76 0 0 0 0 -- -- -- 10.9 19 0 -- -- -- 75 -- -450
SMRT2815D
TYP 15.00 15.00 -- -- -- -- -- 5 5 -- 28 -- -- -- 10 -- -- -- -- -- -- -- -- -- MAX 15.30 15.30 1.17 17.5 17.5 35 180 30 40 16.0 56 80 50 110 50 -- 20 575 3 700 4 25 150 5000 mA mA p-p % W mV pk ms mv pk ms ms mV pk F mV p-p mV mV Vout VDC V W VDC A UNITS 14.70 14.70 -- 0 0 0 -- -- -- 14.0 19 0 -- -- -- 75 -- -575
INPUT VOLTAGE7, 8
3-- 500 -1000
2-- 1000 -700
4-- 25 50 5000 -- -- --
3-- 20 350 5000 -- -- --
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 s. 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.
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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: -55C to +125C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
TRIPLE OUTPUT MODEL - SMRT283R312T
PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT5, 10 OUTPUT POWER10 OUTPUT RIPPLE LINE REGULATION VIN = 19 TO 50 VDC LOAD REGULATION NO LOAD TO FULL VIN = 19, 28, 50 VDC TOTAL REGULATION VIN = 19 TO 56 VDC 10 KHZ - 20 MHZ + VOUT - VOUT + VOUT - VOUT ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION CONTINUOUS TRANSIENT 100 ms INPUT CURRENT INPUT RIPPLE CURRENT9 EFFICIENCY4 LOAD FAULT STEP LOAD RESPONSE6 STEP LINE RESPONSE1 POWER DISSIPATION2 TRANSIENT RECOVERY 19 - 56 - 19 VIN TRANSIENT RECOVERY START-UP DELAY3 NO LOAD AND FULL OVERSHOOT3 CAPACITIVE LOAD1 UNCONDITIONALLY STABLE, START-UP DELAY INCREASED TC = 25C -- -- -- INHIBITED7 NO LOAD 10 kHz - 20 MHz CONDITIONS + VOUT - VOUT MIN 3.23 -- -- 0 -- -- -- -- --
3.3
TYP 3.30 -- -- -- -- -- -- 5 -- MAX MIN 3.37 11.76
12
TYP 12.00 12.00 0.625 7.5 -- 5 10 5 10 MAX 12.24 -12.42 1 15 150 30 70 40 mV ---- 300 mV VDC A W mV p-p UNITS
-- -11.58 30 9.9 0 200 -- 30 -- ---- 40 --
3.0 19 0 -- -- -- 68 -- -450 -- -500 --
-- 28 -- -- -- 10 -- -- -- -- -- -- -- 0 --
3.6 10.9 56 80 19 0
-- 28 -- -- -- 10 -- -- -- -- -- -- -- 0 --
13.1 56 80 50 110 50 -- 28 450 3 750 4 25 120 1000
VOUT VDC V mA mA p-p % W mV pk ms mV pk ms ms mV pk F
INPUT VOLTAGE7, 8
50 -- 110 -- 50 -- -- 68 28 -- 450 -450
3-- 500 -750
4-- 35 50 -- --
5000 --
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 s. 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.
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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: -55C to +125C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
TRIPLE OUTPUT MODEL - SMRT283R315T
PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT5, 10 OUTPUT POWER10 OUTPUT RIPPLE LINE REGULATION VIN = 19 TO 50 VDC LOAD REGULATION NO LOAD TO FULL VIN = 19, 28, 50 VDC TOTAL REGULATION VIN = 19 TO 56 VDC 10 KHZ - 20 MHZ + VOUT - VOUT + VOUT - VOUT ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION CONTINUOUS TRANSIENT 100 ms INPUT CURRENT INPUT RIPPLE CURRENT9 EFFICIENCY4 LOAD FAULT STEP LOAD RESPONSE6 STEP LINE RESPONSE1 POWER DISSIPATION2 TRANSIENT RECOVERY 19 - 56 - 19 VIN TRANSIENT RECOVERY START-UP DELAY3 NO LOAD AND FULL OVERSHOOT3 CAPACITIVE LOAD1 UNCONDITIONALLY STABLE, START-UP DELAY INCREASED TC = 25C -- -- -- INHIBITED7 NO LOAD 10 kHz - 20 MHz CONDITIONS + VOUT - VOUT MIN 3.23 -- -- 0 -- -- -- -- -- 3.0 19 0 -- -- -- 68 -- -450 -- -500 --
3.3
TYP 3.30 -- -- -- -- -- -- 5 -- -- 28 -- -- -- 10 -- -- -- -- -- -- -- 0 -- MAX 3.37 MIN 14.70
15
TYP 15.00 -15.00 0.5 7.5 -- 5 10 5 10 -- 28 -- -- -- 10 -- -- -- -- -- -- -- 0 -- MAX 15.30 -15.53 0.8 15 150 30 70 40 mV ---- 3.6 56 80 50 110 50 -- 28 450 10.9 19 0 -- -- -- 68 -- -450 300 13.1 56 80 50 110 50 -- 28 450 3 750 4 25 150 1000 mA mA p-p % W mV pk ms mV pk ms VOUT VDC V mV VDC A W mV p-p UNITS
-- -14.48 3 9.9 200 30 0 0 -- --
---- 40 --
INPUT VOLTAGE7, 8
3-- 500 -750
4-- 35 50 5000 -- -- --
ms mV pk F
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 s. 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.
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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: -55C to +125C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
TRIPLE OUTPUT MODEL - SMRT28512T
PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT5, 10 OUTPUT POWER10 OUTPUT RIPPLE LINE REGULATION VIN = 19 TO 50 VDC LOAD REGULATION NO LOAD TO FULL VIN = 19, 28, 50 VDC TOTAL REGULATION VIN = 19 TO 56 VDC 10 KHZ - 20 MHZ + VOUT - VOUT + VOUT - VOUT ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION CONTINUOUS TRANSIENT 100 ms INPUT CURRENT INPUT RIPPLE CURRENT9 EFFICIENCY4 LOAD FAULT STEP LOAD RESPONSE6 STEP LINE RESPONSE1 POWER DISSIPATION2 TRANSIENT RECOVERY 19 - 56 - 19 VIN TRANSIENT RECOVERY START-UP DELAY3 NO LOAD AND FULL OVERSHOOT3 CAPACITIVE LOAD1 UNCONDITIONALLY STABLE, START-UP DELAY INCREASED TC = 25C -- -- -- INHIBITED7 NO LOAD 10 kHz - 20 MHz CONDITIONS + VOUT - VOUT MIN 4.90 -- -- 0 -- -- -- -- -- 4.7 19 0 -- -- -- 68 -- -450 -- -500 --
5
TYP 5.00 -- -- -- -- -- -- 5 -- -- 28 -- -- -- 10 -- -- -- -- -- -- -- 0 -- MAX 5.10 MIN 11.76
12
TYP 12.00 12.00 0.63 7.5 -- 5 20 5 10 -- 28 -- -- -- 10 -- -- -- -- -- -- -- 0 -- MAX 12.24 -12.42 1 15 150 30 70 40 mV ---- 5.3 56 80 50 110 50 -- 25 450 10.9 19 0 -- -- -- 68 -- -450 300 13.1 56 80 50 110 50 -- 25 450 3 750 4 25 120 1000 mA mA p-p % W mV pk ms mV pk ms ms mV pk F VOUT VDC V mV VDC A W mV p-p UNITS
-- -11.58 3.0 15 200 30 0 0 -- --
---- 40 --
INPUT VOLTAGE7, 8
3-- 500 -750
4-- 25 50 5000 -- -- --
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 s. 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.
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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: -55C to +125C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
TRIPLE OUTPUT MODEL - SMRT28515T
PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT5, 10 OUTPUT POWER10 OUTPUT RIPPLE LINE REGULATION VIN = 19 TO 50 VDC LOAD REGULATION NO LOAD TO FULL VIN = 19, 28, 50 VDC TOTAL REGULATION VIN = 19 TO 56 VDC 10 KHZ - 20 MHZ + VOUT - VOUT + VOUT - VOUT ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION CONTINUOUS TRANSIENT 100 ms INPUT CURRENT INPUT RIPPLE CURRENT9 EFFICIENCY4 LOAD FAULT STEP LOAD RESPONSE6 STEP LINE RESPONSE1 POWER DISSIPATION2 TRANSIENT RECOVERY 19 - 56 - 19 VIN TRANSIENT RECOVERY START-UP DELAY3 NO LOAD AND FULL OVERSHOOT3 CAPACITIVE LOAD1 UNCONDITIONALLY STABLE, START-UP DELAY INCREASED TC = 25C INHIBITED7 NO LOAD 10 kHz - 20 MHz CONDITIONS + VOUT - VOUT MIN 4.92 -- -- 0 -- -- -- -- -- 4.7 19 0 -- -- -- 70 -- -250 -- -500 -- -- -- --
5
TYP 5.00 -- -- -- -- 5 -- 5 -- -- 28 -- -- -- 10 -- -- -- -- -- -- -- 0 -- MAX MIN 5.08 14.77
15
TYP 15.00 -15.00 0.5 7.5 -- -- 20 5 10 -- 28 -- -- -- 10 -- -- -- -- -- -- -- 0 -- MAX 15.23 -15.30 0.75 15 200 mV p-p 25 -- 25 35 50 mV ---- 5.3 14 56 80 19 0 500 16.0 56 80 50 110 150 -- 25 350 1 750 1.5 20 350 1000 VOUT VDC V V mA mA p-p % W mV pk ms mV pk ms ms mV pk F mV VDC A W UNITS
-- -14.70 3.0 0 15 0 200 --
---- 50 --
INPUT VOLTAGE7, 8
50 -- 110 -- 150 -- -- 70 25 -- 250 -350
1-- 500 -750
1.5 -- 25 200 -- --
5000 --
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 s. 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.
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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
6 x 0.135 dia.
3x 2.205 max (56.01) 3x 2.075 (52.68)
Angled corner indicates pin 1
12 x 0.040 dia. 14 13 12 11 10 9 8 1 2 3 4 5
2x 1.700 (43.18) 2x 1.500 (38.10) 2x 1.300 (33.02) 1.675 2x 1.100 (27.94) 2x 0.900 (22.86) 0.700 (17.78) 0.500 (12.70)
3x 0.125 (3.15) 0.262 0.00
7x 0.220 (5.59) 0.050 (1.27) 0.00
12 x 0.270 max (6.86)
0.400 max (10.16)
0.00 2x 0.150 (3.81)
2x 1.550 (39.37)
2x 2.550 (64.77)
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 300C 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 (c) 1999-2006 Interpoint Corp. All rights reserved.
FIGURE 4: CASE S
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Page 14 of 17 Rev B - 20080213
2x 2.705 max (68.71)
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
no no N/A no no N/A N/A N/A N/A no no no no N/A no yes no no no no no no no no N/A no no no no no yes yes yes no no no no no no N/A N/A yes yes no no
CLASS H QML M/S2 P3
yes yes N/A no no N/A N/A N/A N/A no no yes yes N/A yes
CLASS K QML M/S2
yes yes yes yes yes yes yes yes yes N/A N/A yes yes yes no
P3
yes yes N/A yes yes N/A N/A N/A N/A yes yes yes yes N/A yes
Element Electrical Element Visual Internal Visual Temperature Cycling Constant Acceleration Interim Electrical Burn-in Post Burn-in Electrical Steady State Life Voltage Conditioning Aging Visual Inspection Final Electrical Wire Bond Evaluation4 SEM SLAMTM/C-SAM: Input capacitors only (Add'l test, not req. by H or K)
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 SLAMTM: Scanning Laser Acoustic Microscopy C-SAM: C - Mode Scanning Acoustic Microscopy
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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 Non-destruct bond pull2 Method 2023 Pre-cap Inspection Method 2017, 2032 Temperature Cycle (10 times) Method 1010, Cond. C, -65C to 150C, ambient Constant Acceleration Method 2001, 3000 g PIND Test Method 2020, Cond. A Pre burn-in test Burn-in Method 1015, 125C case, typical 96 hours 160 hours 2 x 160 hours (includes mid-BI test) Final Electrical Test MIL-PRF-38534 Group A, Subgroups 1 through 6 -55C, +25C, +125C case Radiography Method 2012 Post Radiography Electrical Test Room temperature Hermeticity Test Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Final visual inspection Method 2009
SPACE PROTOTYPE (O) NON-QML1
no yes
CLASS H QML
yes3 yes
CLASS K QML
yes yes
yes yes no yes
yes yes yes3 yes
yes yes yes yes
yes no no
no yes no
no no yes
yes N/A N/A yes yes yes
yes N/A N/A yes yes yes
yes N/A yes3 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.
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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 RADIATION HARDNESS
ASSURANCE LEVELS O2: Standard, no radiation guarantee OO N/A N/A
SPACE PROTOTYPE (O)
NON-QML3
CLASS H QML
CLASS K QML
P: Radiation tolerant-Tested lots up to 30 K Rads (Si) total dose SEU guarantee up to 40 MeV R: Radiation tolerant-Tested lots up to 100 K Rads (Si) total dose SEU guarantee up to 40 MeV F: Radiation tolerant-Tested lots up to 300 K Rads (Si) total dose SEU guarantee up to 60 MeV
N/A
HP4
KP4
N/A
HR4
KR4
N/A
N/A
KF4
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 (c) 1999 - 2008 Interpoint Corporation. All rights reserved. www.craneae.com
Page 17 of 17

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