SMRT28

SMRT28_10 INTERPOINT | Alldatasheet

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Features

Built in MIL-stD-461 eMI filter Output trim from 51% to 124% of nominal Operating temperature -55° to +125°C• Qualified to MIL-PRF-38534 Class H and K• Radiation hardness assurance (RHA) to • level F 300 kRad(Si) Input voltage range 19 to 56 VDC • Transient protection 80 V for 100 ms• Fully isolated, 5 port isolation• Dual magnetic feedback• Fixed high frequency switching• Remote sense• Inhibit function• Synchronization input• Indefinite short circuit protection• Radiation tolerant to • 1 x 10 - 12 protons/cm2 neutron or proton fluence 10 - 11 rad(Si)/sec dose rate 3 x 10 - 5 rad(Si) total dose SEE - LET to 80 MeV cm - 2/mg Meets MIL-STD-704A transient standards•

DescrIptIOn

The SMRT28 Series™ of DC/DC converters offers up to 35 watts of power in a radiation tolerant design. The low profile SMRT28 converters are manufactured in Interpoint’s fully certi- fied and qualified MIL-PRF-38534 production facility and pack- aged 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 SMRT28 converters are switching regulators which use a two-phase, 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 SMRT28’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 100 kRad(Si) or greater to ensure tight regulation over the full input range. The converter should not be inhibited or oper- ated below 19 Vin above 5x10 4 rad(Si) total dose. 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. This product configuration eliminates cross regulation effects between output sets. Configurations:

• Single Output: One two-phase 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) MODELS VDC Ou t p u t SIngLE 3.3 8.7 DUAL ±12 ±15 TRIPLE +3.3 & ±12 +3.3 & ±15 +5 & ±7 +5 & ±12 +5 & ±15 The information in this document is a derivative of a document cleared by the Department of Defense (DoD) Office of Security Review (OSR) for public release. OSR case number 09-S-1960 dated June 22, 2009. Crane Aerospace & Electronics Power Solutions sMrt28 single, Dual and triple space Dc/Dc converters Crane Aerospace & Electronics Electronics group (Interpoint Brand) PO Box 97005 • Redmond WA 98073-9705 425.882.3100 • power@crane-eg.com www.interpoint.com Page 1 of 19

28 VOLt Input – 35 Watt – space quaLIFIeD

unDe rV Ol t a g e lO CkOu t The converters have an undervoltage lockout that will allow power conversion at approximately 17 volts on a rising input voltage and a conversion shut-down on a falling voltage at approximately 14.5 volts. In hIbIt Fu nCtI On The SMRT28 Series incorporates an inhibit terminal that can be used to disable internal switching. It is not recommended to tie the Inhibit pin of an SMRT28 directly to the Inhibit pin of another converter as the SMRT28 Inhibit pin can sink current. When pulling multiple inhibit signals low a separate interface is recom- mended for each SMRT28. The converter is inhibited when the inhibit pin is pulled low (0.4 V). 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. Although open circuit is the preferred method for the enabled state, up to 10 volts may be applied to the inhibit pin. Sy nCh rOnIz a tI On The Sync Input is isolated which allows Sync Return to be tied to the primary side, secondary side, or float with respect to all inputs and outputs. Input current into this pin is limited by a series 1 k ohm resistance. Ou t p u t VOl t a g e trIm The output voltage of each set can be trimmed from 51% to 125% of nominal (varies by model, see trim instructions on page 4). 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 positive sense pin.
• Single: One set raD Ia tI On tOl e r a nCe The SMRT28 DC/DC converters are designed to provide contin- uous normal operation through radiation levels associated with space missions and in tactical and strategic military environ - ments. The converters will operate normally in radiation environ - ments with up to 1 x 10 12 neutrons per square centimeter neutron fluence, 1011 rad(Si) per second dose rate, and 3x10 5 rad(Si) total dose. These levels of radiation tolerance make the SMRT28 converters suitable for electronics in programs where operation in high radia - tion environments is required. At the highest dose rate (10 11 rad(Si)/sec dose rate) there will be an upset resulting in a dip in the voltage. This is non-destructive to the unit. The converter will operate through the upset. SCr e e nIn g SMRT28 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 Screening Tables 1, 2 and 3 for more information. emI The SMRT28 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-/F-CE102. Se nSe 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 positive sense line and the positive output. Se nSe Ad j uSt InSt r u c tIo nS f o r ou t p u t A o n duAl Mo d e lS Ad j uSt up on l y (see trim tables on page 4 for more options) RaDj uSt = 240 ( Vout - Vnom ) Vmax - Vout Vout = desired output voltage Vnom = nominal unadjusted output voltage Vmax = maximum achievable output voltage 5V Vmax = 6.0 V 12V Vmax = 14.68 V 15V Vmax = 18.36V note: RADJUST should be connected between Sense A (pin 8) and Vout A (pin 11). Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 2 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

Operating COnditiOns and CharaCteristiCs Input Voltage range 19 to 56 VDC continuous•

80 V for 100 ms transient•

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• Derating Output power/current Linearly from 100% at 125°C to 0% at 135°C• power Dissipation (pd) 20 to 31 W• Output Voltage temperature coefficient 100 ppm/°C max• current Limit 125% of full load typical• Isolation at 25°c 100 megohm minimum at 500 V• audio rejection 50 dB typical• conversion Frequency 300 kHz typ 270 kHz min, 330 kHz max• radiation (will operate through) 1x10• 12 neutrons/cm2 neutron or proton fluence Radiation dose rate 10• 11 rad(Si) /sec Total dose up to 300 kRad(Si) •

• SEE - LET to 80 MeV cm 2/mg meChaniCal and envirOnmental size (maximum) See case S for dimensions. ‣ Weight (maximum) 100 grams maximum• screening Space Prototype, Class H, or Class K are 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 Screening Tables 1, 2 and 3 for more information. Available configurations: OO, HP, HR, KP, KR, KF synC and inhibit sync Input frequency 270-330 kHz• Duty cycle 20% min, 80% max •

2.5 V p-p minimum amplitude•

10 V p-p maximum amplitude•

Sync circuit is floating and isolated• If sync is used at lower end of the range, full load • operation is not guaranteed. Inhibit Active low (output disabled)• InH referenced to input common ‣ Active low, pulled to 0.4 V or lower ‣ Inhibit pin current ‣ < 2mA Active high (output enabled)• High >2.4V ‣ not to exceed 10V ‣ Open pin voltage 5 to 6 volts ‣ Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 3 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

Rt rIm should be connected between the trim pin and positive sense pin. Duals Rt rIm 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. See page 2 for instructions on trimming up output A. Triples Rt rIm should be connected between the trim a pin and positive Vout a pin to adjust the Main output. Rt rIm should be connected between the trim B pin and positive Vout B pin to adjust the Auxiliary outputs. Rt rIm = K ( Vout - Vmin ) Vnom - Vout Vout = Desired Voltage; K/Vmin/Vnom from table below. VnOM K VMIn % OF VnOM 3.3 3500 3.18 96 5.0 4520 4.16 83 7.0 8020 5.47 78 8.7 9040 6.13 70 12 11030 7.05 58 15 12900 7.65 51 SMRT Single Sense Trim SMRT Dual Vout B Trim B SMRT Triple Vout A Trim A Trim B +Vout B trIm up Singles Rt rIm should be connected between the trim pin and sense return pin. Duals Rt rIm 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 Rt rIm should be connected between the trim a pin and Vout a return pin to adjust the Main outputs. Rt rIm should be connected between the trim B pin and Vout B return pin to adjust the Auxiliary outputs. Rt rIm = K ( Vmax - Vout ) Vout - Vnom Vout = Desired Voltage; K/Vmax/Vnom from table below. VnOM K VMAX % OF VnOM 3.3 3000 3.70 112 5.0 3000 6.26 125 7.0 5300 8.27 118 8.7 5300 10.46 149 12 5300 14.69 122 15 5300 18.54 124 SMRT Single Sense Return Trim SMRT Dual Vout B Return Trim B SMRT Triple Vout A Return Trim A Trim B Vout B Return FIg u r e 1: trIm DOw n DIa g r a mS FIg u r e 2: trIm up DIa g r a mS note: Do not exceed maximum power rating when trimming up.note: Do not exceed maximum current rating when trimming down, Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 4 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

FIg u r e 3: pIn Ou t TOP VIEW See case S for dimensions. pIn Out pin single Output Dual Output triple Output

1 Vin Vin Vin

2 Vin Return Vin Return Vin Return

3 Inhibit Inhibit Inhibit

4 Sync In Sync In Sync In

5 Sync Return Sync Return Sync Return

8 Sense Sense A Trim B

9 Sense Return Sense A Return Vout B negative

10 Vout A Return Vout A Return Vout B Return

11 Vout A Vout A Vout B Positive

12 Trim Trim B Trim A

13 Vout A Vout B Vout A

14 Vout A Return Vout B Return Vout A Return

Inhibit: single, dual and triple Leave unconnected Sync In Connect to Sync Return Sense Lines Must be connected to appropriate outputs Trim (all) Leave unconnected Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 5 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

Assurance (RHA) Number of Outputs (S=single, D=dual, T=triple) (single or dual Vout for single or dual models main and aux. Vout for triple models) sMD nuMBers StAn dAr d MIc r o cIr c uIt drAwIn g (SMd) SMrt28 SIMIlAr pAr t 5962F0622001KXC SMRT283R3S/KF 5962F0622101KXC SMRT2805S/KF 5962F0821001KXC SMRT2812S/KF 5962F0622201KXC SMRT2815S/KF 5962F0622301KXC SMRT2805D/KF 5962F0720201KXC SMRT2812D/KF 5962F0622401KXC SMRT2815D/KF 5962F0821101KXC SMRT283R312T/KF 5962F0821201KXC SMRT283R315T/KF 5962F0622501KXC SMRT28512T/KF 5962F0622601KXC SMRT28515T/KF The SMD number shown is for Class K screening and Radiation Hardness Assurance (RHA) level F. 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 MODeL seLectIOn on t h e lIn eS b e l o w, e n t e r o n e Se l e c tIo n f r oM eAc h cAt e g o r y t o d e t e rM In e t h e Mo d e l n uMb e r. categOry Base Model and Input Voltage Output Voltage 1 number of Outputs 2 Screening 3 RHA 4 seLectIOn SMRT28 is the only available selection 3r3, 05, 12, 15 s O O 05, 12, 15 D H p 3r312, 3r315, 512, 515 t k r F notes: and 3R315 triple output converters are +3.3 volt main and ±12 or ±15 volt auxiliaries. 512 and 515 triple output converters are +5 volt main and ±12 or ±15 volt auxiliaries. 2. number of Outputs: S is a single output, D is a dual output, and T is a triple output 3. Screening: A screening level of O is a Space Prototype and is only used with RHA O. See Screening Tables 2 and 3 for more information. 4. 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 Screening Table 3 for more information. Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 6 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

Electrical Characteristics: -55°C to +125°C T C, 28 VDC Vin, 100% load, unless otherwise specified. notes 1. guaranteed by design, not tested. 2. To maintain tight regulation over the full input voltage range a minimum load of 2% of full load should be used on all outputs. 3. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-/F-CE-102. The actual value of input ripple current is much less, the limit in the characteristic table is based on measurement resolution.. 4. Maximum power dissipation when output is shorted. 5. Recovery time is measured from application of the transient to point at which V OUT is within 1% of V OUT at final value. 6. Transition time >10 µs. 7. Half load to/from full load. 8. Measured from release of inhibit or input voltage step SIngLE OUTPUT MODELS SMRT283R3S SMRT2805S SMRT288R7S unItSparameter COnDItIOnS MIn TYP MAX MIn TYP MAX MIn TYP MAX Output Current 2 0 — 6.97 0 — 6.0 0 — 4.0 A Output pOwer 2 VIn = 19 tO 56 VDC 0 — 23 0 — 30 0 — 35 W Output rIpple 10 khz - 20 mhz — — 280 — — 200 — — 200 mV p-p lIne regulatIOn 2 VIn = 19, 50 VDC — 5 30 — 5 30 — 5 30 mV lOaD regulatIOn — 5 40 — 5 40 — 5 80 mV VIn = 19, 50 — — 90 — — 70 — — 80 tOtal regulatIOn 1 VOut all COnDItIOnS OF lIne, lOaD, agIng, temp anD raDIatIOn Input VOltage COntInuOuS 19 28 56 19 28 56 19 28 56 VDC tranSIent 1 100 ms 0 — 80 0 — 80 0 — 80 V Input Current InhIbIteD — — 50 — — 50 — — 50 mAnO lOaD — — 110 — — 110 — — 115 Input rIpple Current 3 10 kHz - 20 MHz — 10 50 — 10 50 — 10 50 mA p-p eFFICIenCy 60 — — 66 — — 72 — — % lOaD Fault 4, 5 POWER DISSIPATION — — 31 — — 28 — — 25 W reCOVery 1 — — 25 — — 25 — — 25 ms Step lOaD reSpOnSe 5, 6, 7 tranSIent — — ±450 — — ±450 — — ±450 mV pk Step lIne reSpOnSe 1, 5, 6 19 - 50 - 19 V In Start-up 8 Delay nO lOaD anD Full — — 35 — — 25 — — 60 ms OVerShOOt — — 50 — — 50 — — 95 mV pk CapaCItIVe lOaD 1 tC = 25°C unCOnDItIOnally Stable, Start-up Delay InCreaSeD Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 7 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

Electrical Characteristics: -55°C to +125°C T C, 28 VDC Vin, 100% load, unless otherwise specified. SIngLE OUTPUT MODELS SMRT2812S SMRT2815S unItSparameter COnDItIOnS MIn TYP MAX MIn TYP MAX Output Current 2 — — 2.92 — — 2.33 A Output pOwer 2 VIn = 19 tO 56 VDC 0 — 35 0 — 35 W Output rIpple 10 khz - 20 mhz — — 200 — — 180 mV p-p lIne regulatIOn 2 VIn = 19, 50 VDC — 5 30 — 5 30 mV lOaD regulatIOn — 5 40 — 5 40 mV VIn = 19, 50 VDC — — 90 — — 90 tOtal regulatIOn 1 VOUT all COnDItIOnS OF lIne, lOaD, agIng, temp anD raDIatIOn 10.9 — 13.1 14.0 — 16.0 VDC Input VOltage COntInuOuS 19 28 56 19 28 56 VDC tranSIent 1 100 ms 0 — 80 0 — 80 V Input Current InhIbIteD — — 50 — — 50 mA nO lOaD — — 110 — — 110 Input rIpple Current 3 10 kHz - 20 MHz — 10 50 — 10 50 mA p-p eFFICIenCy 75 — — 75 — — % lOaD Fault 4, 5 POWER DISSIPATION — — 20 — — 20 W reCOVery 1 — — 25 — — 25 ms Step lOaD reSpOnSe 5, 6, 7 tranSIent — — ±575 — — ±575 mV pk reCOVery — — 3 — — 3 ms Step lIne reSpOnSe 1, 5, 6 19 - 50 - 19 V In tranSIent — — ±700 — — ±700 mV pk reCOVery — — 4 — — 4 ms Start-up 8 Delay nO lOaD anD Full — — 25 — — 25 ms OVerShOOt — — 120 — — 150 mV pk CapaCItIVe lOaD 1 tC = 25°C unCOnDItIOnally Stable, Start-up Delay InCreaSeD — — 5000 — — 5000 µF notes 1. guaranteed by design, not tested. 2. To maintain tight regulation over the full input voltage range a minimum load of 2% of full load should be used on all outputs. 3. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-/F-CE-102. The actual value of input ripple current is much less, the limit in the characteristic table is based on measurement resolution.. 4. Maximum power dissipation when output is shorted. 5. Recovery time is measured from application of the transient to point at which V OUT is within 1% of V OUT at final value. 6. Transition time >10 µs. 7. Half load to/from full load. 8. Measured from release of inhibit or input voltage step Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 8 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

Electrical Characteristics: -55°C to +125°C T C, 28 VDC Vin, 100% load, unless otherwise specified. DUAL OUTPUT MODELS SMRT2805D SMRT2812D SMRT2815D unItSparameter COnDItIOnS MIn TYP MAX MIn TYP MAX MIn TYP MAX Output Current 2, 3 VOu t a — — 3.0 — — 1.46 — — 1.17 Output pOwer 2, 3 VIn = 19 tO 56 VDC VOu t a 0 — 15 0 — 17.5 0 — 17.5 W VOu t b 0 — 15 0 — 17.5 0 — 17.5 Output rIpple 10 khz - 20 mhz — — 200 — — 200 — — 180 mV p-p lIne regulatIOn 2 VIn = 19, 50 VDC — — 30 — 5 25 — 5 30 mV lOaD regulatIOn — 5 40 — 5 50 — 5 40 mV VIn = 19, 50 VDC — — 70 — — 100 — — 70 tOtal regulatIOn 1 VOUT all COnDItIOnS OF lIne, lOaD, agIng, temp anD raDIatIOn Input VOltage 4 COntInuOuS 19 28 56 19 28 56 19 28 56 VDC tranSIent 100 ms 0 — 80 0 — 80 0 — 80 V Input Current InhIbIteD 4 — — 50 — — 50 — — 50 mA nO lOaD — — 110 — — 110 — — 110 Input rIpple Current 4 10 kHz - 20 MHz — 10 50 — 10 150 — 10 50 mA p-p eFFICIenCy 66 — — 75 — — 75 — — % lOaD Fault 5, 6 pOwer DISSIpatIOn — — 28 — — 20 — — 20 W reCOVery 1 — — 25 — — 25 — — 25 ms Step lOaD reSpOnSe 6, 7, 8 Step lIne reSpOnSe 1, 6, 7 19 - 50 - 19 V In Start-up 9 Delay nO lOaD anD Full — — 25 — — 20 — — 25 ms OVerShOOt — — 50 — — 350 — — 150 mV pk CapaCItIVe lOaD1 tC = 25°C unCOnDItIOnally Stable, Start-up Delay InCreaSeD notes 1. guaranteed by design, not tested. 2. The specified maximum current/power is available from each output. 3. To maintain tight regulation over the full input voltage range a minimum load of 2% of full load should be used on all outputs. 4. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-/F-CE-102. The actual value of input ripple current is much less, the limit in the characteristic table is based on measurement resolution.. 5. Maximum power dissipation when output is shorted. 6. Recovery time is measured from application of the transient to point at which V OUT is within 1% of V OUT at final value. 7. Transition time >10 µs. 8. Half load to/from full load. 9. Measured from release of inhibit or input voltage step Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 9 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

TRIPLE OUTPUT MODEL – SMRT283R312T 3.3 (MAIn) ±12 (AUXILIARIES) unItSparameter COnDItIOnS MIn TYP MAX MIn TYP MAX Output Current 2, 3 — — 4.5 0 ±0.63 1 1 A Output pOwer 2, 3 0 — 15 0 ±7.5 12 1 W VIn = 19 tO 56 VDC TOTAL — — — — — 15 Output rIpple 10 khz - 20 mhz — — 200 — — 150 mV p-p lIne regulatIOn MAIn AnD POS. AUX — — 30 — 5 30 mV VIn = 19, 50 VDC nEg. AUX. — — — — 10 70 lOaD regulatIOn MAIn AnD POS. AUX — 5 40 — 5 40 VIn = 19, 50 VDC — — 100 — — 120 nEg. AUX. 1 — — — — 10 300 mV VIn = 19, 50 VDC 1 — — — — — 400 tOtal regulatIOn 1 VOUT all COnDItIOnS OF lIne, lOaD, agIng, temp anD raDIatIOn CrOSS regulatIOn 1, 4, 5 tC = 25°C EFFECT On nEgATIVE AUXILIARY — — — — — 2.5 % Input VOltage COntInuOuS 19 28 56 — — — VDC tranSIent 100 ms 0 — 80 — — — V Input Current nO lOaD — — 110 — — — mA Input rIpple Current 6 10 kHz - 10 MHz — 10 50 — — — mA p-p eFFICIenCy 7 68 — — — — — % lOaD Fault 8, 9 POWER DISSIPATION — — 28 — — — W reCOVery 1 — — 25 — — 25 ms Step lOaD reSpOnSe 9, 10, 11 tranSIent — — ±450 — — ±450 mV pk reCOVery — — 3 — — 3 ms Step lIne reSpOnSe 1, 8, 9 22 - 35 - 22 V In tranSIent — — ±500 — — ±750 mV pk reCOVery — — 4 — — 4 ms Start-up 11 Delay nO lOaD anD Full — — 35 — — 25 ms OVerShOOt — 0 50 — 0 120 mV pk CapaCItIVe lOaD 1 tC = 25°C unCOnDItIOnally Stable, Start-up Delay InCreaSeD — — 5000 — — 1000 µF notes: See page 15 Electrical Characteristics: -55°C to +125°C T C, 28 VDC Vin, 100% load, unless otherwise specified. Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 10 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

Electrical Characteristics: -55°C to +125°C T C, 28 VDC Vin, 100% load, unless otherwise specified. notes: See page 15 TRIPLE OUTPUT MODEL – SMRT283R315T 3.3 (MAIn) ±15 (AUXILIARIES) unItSparameter COnDItIOnS MIn TYP MAX MIn TYP MAX Output Current 2, 3 — — 4.5 0 ±0.5 0.8 1 A Output pOwer 2, 3 0 — 15 0 ±7.5 12 1 W VIn = 19 tO 56 VDC TOTAL — — — — — 15 Output rIpple 10 khz - 20 mhz — — 200 — — 150 mV p-p lIne regulatIOn MAIn AnD POS. AUX — — 30 — 5 30 mV VIn = 19, 50 VDC nEg. AUX. — 10 70 lOaD regulatIOn MAIn AnD POS. AUX — 5 40 — 5 40 VIn = 19, 50 VDC — — 100 — — 120 nEg. AUX. 1 — — — — — 300 mV VIn = 19, 50 VDC 1 — — — — — 400 tOtal regulatIOn 1 VOUT all COnDItIOnS OF lIne, lOaD, agIng, temp anD raDIatIOn CrOSS regulatIOn 1, 4, 5 tC = 25°C EFFECT On nEgATIVE AUXILIARY — — — — — 2.5 % Input VOltage COntInuOuS 19 28 56 — — — VDC tranSIent 100 ms 0 — 80 — — — V Input Current nO lOaD — — 110 — — — mA Input rIpple Current 6 10 kHz - 10 MHz — 10 50 — — — mA p-p eFFICIenCy 7 68 — — — — — % lOaD Fault 8, 9 POWER DISSIPATION — — 28 — — — W reCOVery 1 — — 25 — — 25 ms Step lOaD reSpOnSe 9, 10, 11 tranSIent — — ±450 — — ±450 mV pk reCOVery — — 3 — — 3 ms Step lIne reSpOnSe 1, 8, 9 22 - 35 - 22 V In tranSIent — — ±500 — — ±750 mV pk reCOVery — — 4 — — 4 ms Start-up 11 Delay nO lOaD anD Full — — 35 — — 25 ms OVerShOOt — 0 50 — 0 150 mV pk CapaCItIVe lOaD 1 tC = 25°C unCOnDItIOnally Stable, Start-up Delay InCreaSeD — — 5000 — — 1000 µF Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 11 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

notes: See page 15 TRIPLE OUTPUT MODEL – SMRT28507T 5 (MAIn) ±7 (AUXILIARIES) unItSparameter COnDItIOnS MIn TYP MAX MIn TYP MAX Output Current 2, 3 — — 3.0 0 ±1.00 1.2 1 A Output pOwer 2, 3 0 — 15 0 ±7.0 11.2 1 W VIn = 19 tO 56 VDC TOTAL — — — — — 14 Output rIpple 10 khz - 20 mhz — — 230 — — ±170 mV p-p lIne regulatIOn MAIn AnD POS. AUX — — 70 — — 100 mV VIn = 19, 50 VDC nEg. AUX. — — — — — 150 lOaD regulatIOn MAIn AnD POS. AUX — 5 100 — 5 250 VIn = 19, 50 VDC — — 150 — — 250 nEg. AUX. 1 — — — — — 350 mV VIn = 19, 50 VDC 1 — — — — — 350 tOtal regulatIOn 1 VOUT all COnDItIOnS OF lIne, lOaD, agIng, temp anD raDIatIOn CrOSS regulatIOn 1, 4, 5 tC = 25°C EFFECT On nEgATIVE AUXILIARY — — — — — 2.5 % Input VOltage COntInuOuS 19 28 56 — — — VDC tranSIent 100 ms 0 — 80 — — — V Input Current nO lOaD — — 110 — — — mA Input rIpple Current 6 10 kHz - 10 MHz — 10 50 — — — mA p-p eFFICIenCy 7 71 — — — — — % lOaD Fault 8, 9 POWER DISSIPATION — — 22 — — — W reCOVery 1 — — 25 — — 25 ms Step lOaD reSpOnSe 9, 10, 11 tranSIent — — ±300 — — ±400 mV pk reCOVery — — 2 — — 2 ms Step lIne reSpOnSe 1, 8, 9 22 - 35 - 22 V In tranSIent — — ±500 — — ±750 mV pk reCOVery — — 4 — — 4 ms Start-up 11 Delay nO lOaD anD Full — — 20 — — 20 ms OVerShOOt — 0 100 — 0 150 mV pk CapaCItIVe lOaD 1 tC = 25°C unCOnDItIOnally Stable, Start-up Delay InCreaSeD — — 5000 — — 1000 µF Electrical Characteristics: -55°C to +125°C T C, 28 VDC Vin, 100% load, unless otherwise specified. Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 12 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

notes: See page 15 TRIPLE OUTPUT MODEL – SMRT28512T 5 (MAIn) ±12 (AUXILIARIES) unItSparameter COnDItIOnS MIn TYP MAX MIn TYP MAX Output Current 2, 3 — — 3.0 0 ±0.63 11 A Output pOwer 2, 3 0 — 15 0 ±7.5 12 1 W VIn = 19 tO 56 VDC TOTAL — — — — — 15 Output rIpple 10 khz - 20 mhz — — 200 — — 150 mV p-p lIne regulatIOn MAIn AnD POS. AUX — — 30 — 5 30 mV VIn = 19, 50 VDC nEg. AUX. — 20 70 lOaD regulatIOn MAIn AnD POS. AUX — 5 40 — 5 40 VIn = 19, 50 VDC — — 100 — — 120 nEg. AUX. 1 — — — — 10 300 mV VIn = 19, 50 VDC 1 — — — — — 400 tOtal regulatIOn 1 VOUT all COnDItIOnS OF lIne, lOaD, agIng, temp anD raDIatIOn CrOSS regulatIOn 1, 4, 5 tC = 25°C EFFECT On nEgATIVE AUXILIARY — — — — — 2.5 % Input VOltage COntInuOuS 19 28 56 — — — VDC tranSIent 100 ms 0 — 80 — — — V Input Current nO lOaD — — 110 — — — mA Input rIpple Current 6 10 kHz - 10 MHz — 10 50 — — — mA p-p eFFICIenCy 7 68 — — — — — % lOaD Fault 8, 9 POWER DISSIPATION — — 25 — — — W reCOVery 1 — — 25 — — 25 ms Step lOaD reSpOnSe 9, 10, 11 tranSIent — — ±450 — — ±450 mV pk reCOVery — — 3 — — 3 ms Step lIne reSpOnSe 1, 8, 9 22 - 35 - 22 V In tranSIent — — ±500 — — ±750 mV pk reCOVery — — 4 — — 4 ms Start-up 11 Delay nO lOaD anD Full — — 25 — — 25 ms OVerShOOt — 0 50 — 0 120 mV pk CapaCItIVe lOaD 1 tC = 25°C unCOnDItIOnally Stable, Start-up Delay InCreaSeD — — 5000 — — 1000 µF Electrical Characteristics: -55°C to +125°C T C, 28 VDC Vin, 100% load, unless otherwise specified. Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 13 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

Electrical Characteristics: -55°C to +125°C T C, 28 VDC Vin, 100% load, unless otherwise specified. notes: See page 15 TRIPLE OUTPUT MODEL – SMRT28515T 5 (MAIn) ±15 (AUXILIARIES) unItSparameter COnDItIOnS MIn TYP MAX MIn TYP MAX Output Current 2, 3 — — 3.0 0 ±0.5 0.80 1 A Output pOwer 2, 3 0 — 15 0 ±7.5 11.25 1 W VIn = 19 tO 56 VDC TOTAL — — — — — 15 Output rIpple 10 khz - 20 mhz — — 200 — — 200 mV p-p lIne regulatIOn MAIn AnD POS. AUX — 5 25 — — 25 mV VIn = 19, 50 VDC nEg. AUX. — 20 35 lOaD regulatIOn MAIn AnD POS. AUX — 5 50 — 5 50 VIn = 19, 50 VDC — — 100 — — 120 nEg. AUX. 1 — — — — — 500 mV VIn = 19, 50 VDC 1 — — — — — 600 tOtal regulatIOn 1 VOUT all COnDItIOnS OF lIne, lOaD, agIng, temp anD raDIatIOn CrOSS regulatIOn 1, 4, 5 tC = 25°C EFFECT On nEgATIVE AUXILIARY — — — — — 2.5 % Input VOltage COntInuOuS 19 28 56 — — — VDC tranSIent 100 ms 0 — 80 — — — V Input Current nO lOaD — — 110 — — — mA Input rIpple Current 6 10 kHz - 10 MHz — 10 150 — — — mA p-p eFFICIenCy 7 70 — — — — — % lOaD Fault 8, 9 POWER DISSIPATION — — 25 — — — W reCOVery 1 — — 35 — — 35 ms Step lOaD reSpOnSe 9, 10, 11 tranSIent — — ±250 — — ±350 mV pk reCOVery — — 1 — — 1 ms Step lIne reSpOnSe 1, 8, 9 22 - 35 - 22 V In tranSIent — — ±500 — — ±750 mV pk reCOVery — — 1.5 — — 1.5 ms Start-up 11 Delay nO lOaD anD Full — — 25 — — 20 ms OVerShOOt — 0 200 — 0 350 mV pk CapaCItIVe lOaD 1 tC = 25°C unCOnDItIOnally Stable, Start-up Delay InCreaSeD — — 5000 — — 1000 µF Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 14 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

nOTES: TRIPLE OUTPUT MODELS 1. guaranteed by design, not tested. 2. Up to the maximum specified auxiliary output current/power is available from either auxiliary output provided the total auxiliary output current/ power does not exceed the total current/power specified . 3. To maintain tight regulation over the full input voltage range a minimum load of 2% of full load should be used on all outputs. 4. To maintain the cross regulation specification, one of the auxiliaries must always provide a minimum of 20% of the total auxiliary power used. negative Vout cross regulation is referenced to 50%/50% balanced loads (at 100% of total rated output power - full load). 5. Cross regulation is measured under the following conditions: Condition 1: +POUT = 20 - 80%,/- POUT = 80 - 20% Condition 2: - POUT = 20 - 80%, /+ P OUT = 80 - 20% 6. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-/F-CE-102. The actual value of input ripple current is much less, the limit in the characteristic table is based on measurement resolution. 7. Efficiency measured with all outputs at full load. 8. Maximum power dissipation when all outputs are shorted simultaneously. 9. Recovery time is measured from application of the transient to point at which V OUT is within 1% of V OUT at final value. 10. Transition time >10 µs. 11. Half load to/from full load. 12. Measured from release of inhibit or input voltage step. Electrical Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, unless otherwise specified. Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 15 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

Seal hole: 0.135 ±0.005 (3.43 ±0.13) Angled corner indicates pin 16 x 0.135 (3.43) dia. 12 x 0.040 ± 0.002 dia. (1.02 ± 0.05) 1.700 (43.18) 1.500 (38.10) 1.300 (33.02) 1.100 (27.94) 0.900 (22.86) 0.700 (17.78) 0.500 (12.70) 3x 2.075 (52.68) 3x 0.125 (3.15) 2x 0.150 (3.81) 0.00 0.00 2x 2.550 (64.77) 12 x 0.270 max (6.86) 2x 1.550 (39.37) 0.00 Materials Header Cold Rolled Steel/Nickel Cover Kovar/Nickel Pins #52 alloy/gold, ceramic seal Case S, Rev C, 20091020 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. 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 2.705 max (68.71) 2.205 max (56.01) 0.220 (5.59) 0.050 (1.27) 0.400 max (10.16) FIg u r e 4: CaSe S Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 16 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

CL A S S H A N D K, MIL-PRF-38534 EL E M E N T EV A L U A T I O N COmpOnent-level test perFOrmed spaCe prOtOtype (O) nOn-Qml1 Class h Qml Class K Qml M/S 2 P 3 M/S 2 P 3 M/S 2 P 3 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 Evaluation 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 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 SC r e e n I n g ta b l e 1: el e m e n t eV a l u a t I O n Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 17 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

CL A S S H A N D K, MIL-PRF-38534 EN V I R O N M E N T A L SC R E E N I N G end item-level test perFOrmed spaCe prOtOtype (O) nOn-Qml1 Class h Qml Class K Qml Non-destruct bond pull Method 2023 no yes 2 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 yes 2 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 yes Post Radiography Electrical Test Room temperature N/A N/A yes 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 required by DSCC but performed to assure product quality. SC r e e n I n g ta b l e 2: en V I r O n m e n t a l SC r e e n I n g Crane Aerospace & Electronics Power Solutions www.interpoint.com Page 18 of 19 sMrt28 single, Dual and triple space Dc/Dc converters

CL A S S H A N D K, MIL-PRF-38534 RA D I A T I O N HA R D N E S S AS S U R A N C E (RHA) rAdIAtIon hArdneSS ASSurAnce leVelS 1 ENVIRONMENTAL SCREENING LEVELS SPACE PROTOTYPE (O) N O N-QML2 CLASS H QML CLASS K QML O 3 Standard, no radiation guarantee OO N/A N/A p Radiation tolerant– Tested lots up to 30 kRads (Si) total dose. SEE 4 guarantee up to 80 MeV-cm 2/mg N/A HP KP r Radiation tolerant– Tested lots up to 100 kRads (Si) total dose. SEE 4 guarantee up to 80 MeV-cm 2/mg N/A HR KR F Radiation tolerant– Tested lots up to 300 kRads (Si) total dose. SEE 4 guarantee up to 80 MeV-cm 2/mg N/A N/A KF notes: 1. Redmond site, Interpoint, has a DSCC approved Radiation Hardness Assurance plan. Our SMD products with RHA “P”, “R,” or “F” code meet DSCC requirements. 2. Space Prototype (O), non-QML, products do not meet all of the requirements of MIL-PRF-38534. 3. 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” 4. no upset at the pins. SC r e e n I n g ta b l e 3: ra D I a t I O n ha r D n e S S aS S u r a n C e Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple SMRT28 Rev E - 20100216. This revision supersedes 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 Page 19 of 19 sMrt28 single, Dual and triple space Dc/Dc converters