Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Features Built in MIL-STD-461 EMI filter Output trim from 51% to 124% of nominal * Operating temperature -55 to +125C * 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 120 ms * Fully isolated, 5 port isolation * Dual magnetic feedback * Fixed high frequency switching * Remote sense * Inhibit function * Synchronization input models * Indefinite short circuit protection * Radiation tolerant to -- 1 x 1012 protons/cm2 VDC Output Single 3.3 5 8.7 12 15 neutron or proton fluence -- 1011 rad(Si)/sec dose rate -- 3 x 105 rad(Si) total dose -- SEE - LET to 80 MeV cm2/mg triple +3.3 & 12 +3.3 & 15 +5 & 7 +5 & 12 +5 & 15 * Meets MIL-STD-704A transient standards description The SMRT28 SeriesTM 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 certified and qualified MIL-PRF-38534 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 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. Crane Aerospace & Electronics Crane Electronics, Inc. Power Solutions - Interpoint PO Box 97005 * Redmond WA 98073-9705 425.882.3100 * power@crane-eg.com www.craneae.com/interpoint DUAL 5 12 15 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) Page 1 of 22 SMRT28 Rev F - 2011.01.24 Cleared by the U.S. Department of Defense (DoD) Office of Security Review (OSR) for public release. OSR case number 11-S-0729, dated January 4, 2011. Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Undervoltage Lockout At the highest dose rate (1011 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. 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. Screening Inhibit Function 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 recommended 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. Synchronization 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. 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. 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 positive sense line and the positive output. Output Voltage 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 Radiation Tolerance The SMRT28 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 rad(Si) per second dose rate, and 3x105 rad(Si) total dose. Sense Adjust Instructions for Output A on Dual Models Adjust Up Only (See trim tables on page 4 for more options) RAdjust = 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). These levels of radiation tolerance make the SMRT28 converters suitable for electronics in programs where operation in high radiation environments is required. www.craneae.com/interpoint ( Page 2 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Operating Conditions and characteristics Conversion Frequency * 300 kHz typ 270 kHz min, 330 kHz max Input Voltage Range * 19 to 56 VDC continuous * 80 V for 120 ms transient Radiation (will operate through) * 1x1012 neutrons/cm2 neutron or proton fluence * Radiation dose rate 1011 rad(Si) /sec * Total dose up to 300 kRad(Si) * SEE - LET to 80 MeV cm2/mg Output Power * Up to 35 watts depending on model Lead Soldering Temperature (10 sec per pin) * 300C Storage Temperature Range (Case) * -65C to +150C 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. Case Operating Temperature (Tc) * -55C to +125C full power * -55C to +135C absolute Derating Output Power/Current * Linearly from 100% at 125C to 0% at 135C Power Dissipation (Pd) * 20 to 31 W Inhibit * Converter disabled (active low) INH referenced to input common Active low, pulled to 0.4 V or lower Inhibit pin current < 2 mA * Converter enabled (active high) Active high >2.4 V Not to exceed 10 V Open pin voltage 5 to 6 V Output Voltage Temperature Coefficient * 100 ppm/C max Current Limit * 125% of full load typical Isolation at 25C * 100 megohm minimum at 500 V Audio Rejection * 50 dB typical 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 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 www.craneae.com/interpoint Page 3 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified TRIM TABLEs Trim Up Trim down Singles Singles Rtrim should be connected between the Trim pin and Positive Sense pin. Rtrim should be connected between the Trim pin and Sense Return 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. See page 2 for instructions on trimming up output A. 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 Vnom K Vmin % of VNOM 3.3 3500 3.18 96 5.0 4520 4.16 83 7.0 8020 5.47 78 9040 6.13 70 12 11030 7.05 58 15 12900 7.65 51 Note: Do not exceed maximum current rating when trimming down, 1 14 3 Trim 12 2 4 SMRT Single 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. Rtrim = K ( Vmax - Vout ) Vout - Vnom 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 Note: Do not exceed maximum power rating when trimming up. 1 14 3 Trim 12 2 13 13 SMRT Single 4 11 5 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. Vout = Desired Voltage; K/Vmax/Vnom from table below. Vout = Desired Voltage; K/Vmin/Vnom from table below. 8.7 Duals 5 10 11 10 Sense Return 9 9 8 Sense 8 1 Vout B Return 14 3 Trim B 12 2 1 14 2 3 4 SMRT Dual 5 1 14 2 3 4 5 4 Vout B 13 11 11 10 9 8 10 9 8 1 Vout A Return 14 3 Trim A 12 2 Trim A 12 +Vout B 11 4 10 5 9 Trim B 8 13 SMRT Triple 11 Vout B Return 10 9 Trim B 8 Figure 1: Trim Down Diagrams www.craneae.com/interpoint SMRT Dual 5 Trim B 12 Vout A 13 SMRT Triple 13 Figure 2: Trim Up Diagrams Page 4 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Prim. Bias Bias 1 28V Vin Bias 1 Prim. Bias Error Amp / ref / compensation Prim. Bias EMI Filter Prim. Bias OCP Trim Vout A Rtn. 28V Bias 1 Feed forward compensation Isolation Feedback 28V Phase A Sync In Sense Sense Rtn. PWM Vin Rtn. Vout A Oscillator Bias 2 Clock Sync Rtn. Phase B Prim. Bias Prim. Bias PWM Inhibit Vout A OCP 5.1V Z Vout A Rtn. Bias 2 Isolation Feedback Primary Secondary Figure 3: SMRT Single Block Diagram www.craneae.com/interpoint Page 5 of 22 SMRT28 Rev F - 2011.01.24 Oscillator Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Prim. Bias Bias 1 28V Vin Bias 1 Prim. Bias Error Amp / ref / compensation Prim. Bias EMI Filter Prim. Bias OCP Vout A Rtn. 28V Bias 1 Feed forward compensation Isolation Feedback Oscillator Vout A Rtn 28V Phase A Sync In Sense A Sense A Rtn. PWM Vin Rtn. Vout A Bias 2 Clock Sync Rtn. Phase B Prim. Bias Prim. Bias PWM Inhibit Bias 2 OCP Error Amp / ref / compensation 5.1V Z Vout B Trim B Vout B Rtn. Bias 2 Isolation Feedback Oscillator Vout B Rtn. Primary Secondary Figure 4: SMRT Dual Block Diagram www.craneae.com/interpoint Page 6 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Prim. Bias Bias 1 28V Vin Bias 1 Prim. Bias Error Amp / ref / compensation Prim. Bias EMI Filter PWM Vin Rtn. Prim. Bias Trim A OCP Vout A Rtn. 28V Bias 1 Feed forward compensation Isolation Feedback Oscillator Vout A Rtn. 28V Phase A Sync In Vout A Bias 2 Clock Sync Rtn. Phase B Prim. Bias Prim. Bias PWM Inhibit Bias 2 OCP Error Amp / ref / compensation 5.1V Z Vout B Pos. Trim B Vout B Rtn. Vout B Neg. Bias 2 Isolation Feedback Primary Vout B Rtn. Secondary Figure 5: SMRT Triple Block Diagram www.craneae.com/interpoint Oscillator Page 7 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Pin Single Output Dual Output Triple Output Vin Return Vin Return Vin Return 1 Vin 3 Inhibit 2 4 5 8 9 10 11 12 13 14 PIN OUT Vin Inhibit Sync In Sync In Sync Return Sync Return Sense Sense Return Vout A Return Vout A 1 Vout A 1 Trim Vout A Return Sense A 1 Sense A Return Inhibit Sync In Sync Return Trim B Vout B Negative Vout A Return Vout B Return Trim B Trim A Vout A 1 Vin Vout B Vout B Return Vout B Positive Vout A Vout A Return 1. To meet specifications for Single Output models, Vout A pins (11 and 13) must be tied together and Vout A Return pins (10 and 14) must be tied together. 1 14 2 13 3 TOP VIEW 4 5 See case S for dimensions. 12 11 10 9 8 Figure 6: Pin Out Inhibit: single, dual and triple Sync In Sense Lines Trim (all) www.craneae.com/interpoint PINS NOT IN USE Leave unconnected Connect to Sync Return Must be connected to appropriate outputs Leave unconnected Page 8 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified model numbering key SMRT Base Model Input Voltage SMD Numbers 28 515 T / K F Standard Microcircuit Drawing (SMD) SMRT28 Similar Part 5962F0622001KXC Smrt283R3S/KF 5962F0622101KXC Smrt2805S/KF 5962F0821001KXC Smrt2812S/kf 5962F0622201KXC Smrt2815S/kf 5962F0622301KXC Smrt2805D/kf 5962F0720201KXC Smrt2812D/kf 5962F0622401KXC Smrt2815D/kf Screening 5962F0821101KXC Smrt283R312T/kf Radiation Hardness Assurance (RHA) 5962F0821201KXC Smrt283R315T/kf 5962F0622501KXC Smrt28512t/KF 5962F0622601KXC Smrt28515t/KF 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) 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 On model selection the lines below, enter one selection from each category to determine the model number. Category Selection Base Model and Input Voltage SMRT28 is the only available selection _______ / SMRT28 Output Voltage 1 Number of Outputs 2 Screening 3 RHA 4 3R3, 05, 8R7, 12, 15 S O O 05, 12, 15 D H P 3R312, 3R315, T K R 507, 512, 515 F Notes: 1. Output Voltage: An R indicates a decimal point. 3R3 is 3.3 volts out. The 3R3 output voltage is only available in single and triple output models. The 3R312 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. www.craneae.com/interpoint Page 9 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Electrical Characteristics: -55C to +125C TC, 28 VDC Vin, 100% load, unless otherwise specified. single output models PARAMETER smrt283R3S CONDITIONS OUTPUT RIPPLE LINE REGULATION 2 LOAD REGULATION TOTAL REGULATION 1 VOUT INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT 3 EFFICIENCY LOAD FAULT 4, 5 UNITS TYP MAX MIN TYP MAX MIN TYP MAX 3.23 3.30 3.37 4.90 5.00 5.10 8.52 8.70 8.87 0 -- 6.97 0 -- 6.0 0 -- 4.0 A 0 -- 23 0 -- 30 0 -- 35 W 10 kHz - 20 MHz -- -- 280 -- -- 200 -- -- 200 mV p-p VIN = 19, 50 VDC -- 5 30 -- 5 30 -- 5 30 mV -- 5 40 -- 5 40 -- 5 80 VIN = 19, 50 -- -- 90 -- -- 70 -- -- 80 ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION 3.0 -- 3.6 4.7 -- 5.3 8.3 -- 9.1 VDC CONTINUOUS TRANSIENT 1 120 ms 19 28 56 19 28 56 19 28 56 VDC 0 -- 80 0 -- 80 0 -- 80 V INHIBITED -- -- 50 -- -- 50 -- -- 50 NO LOAD -- -- 110 -- -- 110 -- -- 115 10 kHz - 20 MHz -- 10 50 -- 10 50 -- 10 50 2 OUTPUT POWER 2 SMRT288R7S MIN OUTPUT VOLTAGE OUTPUT CURRENT SMRT2805S VIN = 19 to 56 VDC VDC mV mA mA p-p 60 -- -- 66 -- -- 72 -- -- % POWER DISSIPATION -- -- 31 -- -- 28 -- -- 25 W RECOVERY 1 -- -- 25 -- -- 25 -- -- 25 ms STEP LOAD RESPONSE 5, 6, 7 TRANSIENT -- -- 450 -- -- 450 -- -- 450 mV pk RECOVERY -- -- 3 -- -- 3 -- -- 4 ms STEP LINE RESPONSE 1, 5, 6 19 - 50 - 19 VIN TRANSIENT -- -- 500 -- -- 500 -- -- 500 mV pk RECOVERY -- -- 4 -- -- 4 -- -- 4 ms DELAY NO LOAD AND FULL -- -- 35 -- -- 25 -- -- 60 ms OVERSHOOT -- -- 50 -- -- 50 -- -- 95 mV pk UNCONDITIONALLY STABLE, START-UP DELAY INCREASED -- -- 5000 -- -- 5000 -- -- 5000 F START-UP 8 CAPACITIVE LOAD 1 TC = 25C 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 VOUT is within 1% of VOUT at final value. 6. Transition time >10 s. 7. Half load to/from full load. 8. Measured from release of inhibit or input voltage step www.craneae.com/interpoint Page 10 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Electrical Characteristics: -55C to +125C TC, 28 VDC Vin, 100% load, unless otherwise specified. single output models PARAMETER smrt2812S CONDITIONS OUTPUT VOLTAGE 2 OUTPUT CURRENT OUTPUT POWER 2 VIN = 19 to 56 VDC OUTPUT RIPPLE LINE REGULATION 10 kHz - 20 MHz 2 LOAD REGULATION TOTAL REGULATION 1 VOUT INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT 3 EFFICIENCY LOAD FAULT 4, 5 VIN = 19, 50 VDC smrt2815S UNITS MIN TYP MAX MIN TYP MAX 11.76 12.00 12.24 14.70 15.00 15.30 -- -- 2.92 -- -- 2.33 A 0 -- 35 0 -- 35 W -- -- 200 -- -- 180 mV p-p mV VDC -- 5 30 -- 5 30 -- 5 40 -- 5 40 VIN = 19, 50 VDC -- -- 90 -- -- 90 ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION 10.9 -- 13.1 14.0 -- 16.0 VDC CONTINUOUS TRANSIENT 1 120 ms 19 28 56 19 28 56 VDC 0 -- 80 0 -- 80 V INHIBITED -- -- 50 -- -- 50 NO LOAD -- -- 110 -- -- 110 10 kHz - 20 MHz -- 10 50 -- 10 50 mV mA mA p-p 75 -- -- 75 -- -- % 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 VIN TRANSIENT -- -- 700 -- -- 700 mV pk RECOVERY -- -- 4 -- -- 4 ms DELAY NO LOAD AND FULL -- -- 25 -- -- 25 ms OVERSHOOT -- -- 120 -- -- 150 mV pk UNCONDITIONALLY STABLE, START-UP DELAY INCREASED -- -- 5000 -- -- 5000 F START-UP 8 CAPACITIVE LOAD TC = 25C 1 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 VOUT is within 1% of VOUT at final value. 6. Transition time >10 s. 7. Half load to/from full load. 8. Measured from release of inhibit or input voltage step www.craneae.com/interpoint Page 11 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Electrical Characteristics: -55C to +125C TC, 28 VDC Vin, 100% load, unless otherwise specified. DUAL output models PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT 2, 3 OUTPUT POWER 2, 3 Vin = 19 to 56 VDC OUTPUT RIPPLE LINE REGULATION 2 LOAD REGULATION TOTAL REGULATION 1 VOUT INPUT VOLTAGE 4 INPUT CURRENT INPUT RIPPLE CURRENT 4 EFFICIENCY LOAD FAULT 5, 6 smrt2805D smrt2812D smrt2815D CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX Vout A 4.90 5.00 5.10 11.76 12.00 12.24 14.70 15.00 15.30 Vout B 4.90 5.00 5.10 11.76 12.00 12.24 14.70 15.00 15.30 Vout A -- -- 3.0 -- -- 1.46 -- -- 1.17 Vout B -- -- 3.0 -- -- 1.46 -- -- 1.17 UNITS VDC A Vout A 0 -- 15 0 -- 17.5 0 -- 17.5 Vout B 0 -- 15 0 -- 17.5 0 -- 17.5 10 kHz - 20 MHz -- -- 200 -- -- 200 -- -- 180 mV p-p VIN = 19, 50 VDC -- -- 30 -- 5 25 -- 5 30 mV -- 5 40 -- 5 50 -- 5 40 VIN = 19, 50 VDC -- -- 70 -- -- 100 -- -- 70 ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION 4.6 -- 5.4 10.9 -- 13.1 14.0 -- 16.0 VDC CONTINUOUS 19 28 56 19 28 56 19 28 56 VDC TRANSIENT 120 ms 0 -- 80 0 -- 80 0 -- 80 V INHIBITED 4 -- -- 50 -- -- 50 -- -- 50 NO LOAD -- -- 110 -- -- 110 -- -- 110 10 kHz - 20 MHz -- 10 50 -- 10 150 -- 10 50 W mV mA mA p-p 66 -- -- 75 -- -- 75 -- -- % POWER DISSIPATION -- -- 28 -- -- 20 -- -- 20 W RECOVERY 1 -- -- 25 -- -- 25 -- -- 25 ms STEP LOAD RESPONSE 6, 7, 8 TRANSIENT -- -- 450 -- -- 450 -- -- 575 mV pk RECOVERY -- -- 3 -- -- 2 -- -- 3 ms STEP LINE RESPONSE 1, 6, 7 19 - 50 - 19 VIN TRANSIENT -- -- 500 -- -- 1000 -- -- 700 mv pk RECOVERY -- -- 4 -- -- 3 -- -- 4 ms DELAY NO LOAD AND FULL -- -- 25 -- -- 20 -- -- 25 ms OVERSHOOT -- -- 50 -- -- 350 -- -- 150 mV pk UNCONDITIONALLY STABLE, START-UP DELAY INCREASED -- -- 5000 -- -- 5000 -- -- 5000 F START-UP 9 CAPACITIVE TC = 25C LOAD1 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 VOUT is within 1% of VOUT at final value. 7. Transition time >10 s. 8. Half load to/from full load. 9. Measured from release of inhibit or input voltage step www.craneae.com/interpoint Page 12 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Electrical Characteristics: -55C to +125C TC, 28 VDC Vin, 100% load, unless otherwise specified. triple output model - SMRT283R312T PARAMETER OUTPUT VOLTAGE 3.3 (Main) CONDITIONS MIN TYP MAX MIN TYP MAX Main and Pos. Aux 3.23 3.30 3.37 11.76 12.00 12.24 Neg. Aux. -- -- -- -11.58 -12.00 -12.42 -- -- 4.5 0 0.63 11 -- -- -- -- -- 1.25 0 -- 15 0 7.5 12 1 Total -- -- -- -- -- 15 OUTPUT CURRENT 2, 3 Total OUTPUT POWER 2, 3 VIN = 19 to 56 VDC OUTPUT RIPPLE LINE REGULATION VIN = 19, 50 VDC LOAD REGULATION TOTAL REGULATION VOUT 1 CROSS REGULATION 1, 4, 5 TC = 25C INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT 6 EFFICIENCY STEP LOAD RESPONSE 9, 10, 11 STEP LINE RESPONSE 1, 8, 9 START-UP 10 kHz - 20 MHz -- -- 200 -- -- 150 Main and POS. Aux -- -- 30 -- 5 30 Neg. Aux. -- -- -- -- 10 70 11 CAPACITIVE LOAD 1 TC = 25C VDC A W mV p-p mV -- 5 40 -- 5 40 VIN = 19, 50 VDC -- -- 100 -- -- 120 Neg. Aux. 1 -- -- -- -- 10 300 VIN = 19, 50 VDC 1 -- -- -- -- -- 400 ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION 3.0 -- 3.6 10.9 -- 13.1 VDC Effect on Negative Auxiliary -- -- -- -- -- 2.5 % CONTINUOUS 19 28 56 -- -- -- VDC TRANSIENT 120 ms 0 -- 80 -- -- -- V NO LOAD -- -- 110 -- -- -- INHIBITED -- -- 50 -- -- -- 10 kHz - 10 MHz -- 10 50 -- -- -- mV mA mA p-p 68 -- -- -- -- -- % POWER DISSIPATION -- -- 28 -- -- -- W RECOVERY 1 -- -- 25 -- -- 25 ms TRANSIENT -- -- 450 -- -- 450 mV pk RECOVERY -- -- 3 -- -- 3 ms 19 - 50 - 19 VIN TRANSIENT -- -- 500 -- -- 750 mV pk RECOVERY -- -- 4 -- -- 4 ms DELAY NO LOAD AND FULL -- -- 35 -- -- 25 ms OVERSHOOT -- 0 50 -- 0 120 mV pk UNCONDITIONALLY STABLE, START-UP DELAY INCREASED -- -- 5000 -- -- 1000 F Notes: See page 15 www.craneae.com/interpoint UNITS Main and Pos. Aux 7 LOAD FAULT 8, 9 12 (Auxiliaries) Page 13 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Electrical Characteristics: -55C to +125C TC, 28 VDC Vin, 100% load, unless otherwise specified. triple output model - SMRT283R315T PARAMETER OUTPUT VOLTAGE 3.3 (Main) 15 (Auxiliaries) CONDITIONS MIN TYP MAX MIN TYP MAX Main and Pos. Aux 3.23 3.30 3.37 14.70 15.00 15.30 -14.48 -15.00 -15.53 Neg. Aux. OUTPUT CURRENT 2, 3 -- -- 4.5 0 0.5 0.8 1 -- -- -- -- -- 1.0 0 -- 15 0 7.5 12 1 Total -- -- -- -- -- 15 10 kHz - 20 MHz -- -- 200 -- -- 150 Main and POS. Aux -- -- 30 -- 5 30 -- 10 70 Total OUTPUT POWER 2, 3 VIN = 19 to 56 VDC OUTPUT RIPPLE LINE REGULATION VIN = 19, 50 VDC Neg. Aux. LOAD REGULATION TOTAL REGULATION VOUT CROSS REGULATION 1, 4, 5 TC = 25C INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT 6 EFFICIENCY STEP LOAD RESPONSE 9, 10, 11 STEP LINE RESPONSE 1, 8, 9 START-UP 11 CAPACITIVE LOAD 1 TC = 25C W mV p-p mV 5 40 -- 5 40 VIN = 19, 50 VDC -- -- 100 -- -- 120 -- -- -- -- -- 300 -- -- -- -- -- 400 ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION 3.0 -- 3.6 14.0 -- 16.0 VDC Effect on Negative Auxiliary -- -- -- -- -- 2.5 % CONTINUOUS 19 28 56 -- -- -- VDC TRANSIENT 120 ms 0 -- 80 -- -- -- V 1 VIN = 19, 50 VDC 1 NO LOAD -- -- 110 -- -- -- INHIBITED -- -- 50 -- -- -- 10 kHz - 10 MHz -- 10 50 -- -- -- mV mA mA p-p 68 -- -- -- -- -- % POWER DISSIPATION -- -- 28 -- -- -- W RECOVERY 1 -- -- 25 -- -- 25 ms TRANSIENT -- -- 450 -- -- 450 mV pk RECOVERY -- -- 3 -- -- 3 ms 19 - 50 - 19 VIN TRANSIENT -- -- 500 -- -- 750 mV pk RECOVERY -- -- 4 -- -- 4 ms DELAY NO LOAD AND FULL -- -- 35 -- -- 25 ms OVERSHOOT -- 0 50 -- 0 150 mV pk UNCONDITIONALLY STABLE, START-UP DELAY INCREASED -- -- 5000 -- -- 1000 F Notes: See page 15 www.craneae.com/interpoint A -- 7 LOAD FAULT 8, 9 VDC Main and Pos. Aux Neg. Aux. 1 UNITS Page 14 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Electrical Characteristics: -55C to +125C TC, 28 VDC Vin, 100% load, unless otherwise specified. triple output model - SMRT28507T PARAMETER OUTPUT VOLTAGE 5 (Main) 7 (Auxiliaries) CONDITIONS MIN TYP MAX MIN TYP MAX Main and Pos. Aux 4.90 5.00 5.10 6.86 7.00 7.14 -6.79 7.00 -7.21 Neg. Aux. OUTPUT CURRENT 2, 3 -- -- 3.0 0 1.00 1.2 1 -- -- -- -- -- 2.0 0 -- 15 0 7.0 11.2 1 Total -- -- -- -- -- 14 Total OUTPUT POWER 2, 3 VIN = 19 to 56 VDC OUTPUT RIPPLE LINE REGULATION VIN = 19, 50 VDC LOAD REGULATION TOTAL REGULATION VOUT CROSS REGULATION 1, 4, 5 TC = 25C INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT 6 EFFICIENCY STEP LOAD RESPONSE 9, 10, 11 STEP LINE RESPONSE 1, 8, 9 START-UP 11 CAPACITIVE LOAD 1 TC = 25C W -- -- 230 -- -- 170 -- -- 70 -- -- 100 Neg. Aux. -- -- -- -- -- 150 Main and Pos. Aux -- 5 100 -- 5 250 VIN = 19, 50 VDC -- -- 150 -- -- 250 -- -- -- -- -- 350 -- -- -- -- -- 350 ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION 4.7 -- 5.3 6.53 -- 7.47 VDC Effect on Negative Auxiliary -- -- -- -- -- 2.5 % CONTINUOUS 19 28 56 -- -- -- VDC TRANSIENT 120 ms 0 -- 80 -- -- -- V 1 VIN = 19, 50 VDC 1 NO LOAD -- -- 110 -- -- -- INHIBITED -- -- 50 -- -- -- 10 kHz - 10 MHz -- 10 50 -- -- -- mV p-p mV mV mA mA p-p 71 -- -- -- -- -- % POWER DISSIPATION -- -- 22 -- -- -- W RECOVERY 1 -- -- 25 -- -- 25 ms TRANSIENT -- -- 300 -- -- 400 mV pk RECOVERY -- -- 2 -- -- 2 ms 19 - 50 - 19 VIN TRANSIENT -- -- 500 -- -- 750 mV pk RECOVERY -- -- 4 -- -- 4 ms DELAY NO LOAD AND FULL -- -- 20 -- -- 20 ms OVERSHOOT -- 0 100 -- 0 150 mV pk UNCONDITIONALLY STABLE, START-UP DELAY INCREASED -- -- 5000 -- -- 1000 F Notes: See page 15 www.craneae.com/interpoint A 10 kHz - 20 MHz 7 LOAD FAULT 8, 9 VDC Main and POS. Aux Neg. Aux. 1 UNITS Page 15 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Electrical Characteristics: -55C to +125C TC, 28 VDC Vin, 100% load, unless otherwise specified. triple output model - SMRT28512T PARAMETER OUTPUT VOLTAGE 5 (Main) 12 (Auxiliaries) CONDITIONS MIN TYP MAX MIN TYP MAX Main and Pos. Aux 4.90 5.00 5.10 11.76 12.00 12.24 -11.58 -12.00 -12.42 Neg. Aux. OUTPUT CURRENT 2, 3 -- -- 3.0 0 0.63 11 -- -- -- -- -- 1.25 0 -- 15 0 7.5 12 1 MAX Total AUX -- -- -- -- -- 15 10 kHz - 20 MHz -- -- 200 -- -- 150 Main and POS. Aux -- -- 30 -- 5 30 -- 20 70 max Total AUX OUTPUT POWER 2, 3 VIN = 19 to 56 VDC OUTPUT RIPPLE LINE REGULATION VIN = 19, 50 VDC Neg. Aux. LOAD REGULATION TOTAL REGULATION VOUT CROSS REGULATION 1, 4, 5 TC = 25C INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT 6 EFFICIENCY STEP LOAD RESPONSE 9, 10, 11 STEP LINE RESPONSE 1, 8, 9 START-UP 11 CAPACITIVE LOAD 1 TC = 25C W mV p-p mV 5 40 -- 5 40 VIN = 19, 50 VDC -- -- 100 -- -- 120 -- -- -- -- 10 300 -- -- -- -- -- 400 ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION 4.7 -- 5.3 10.9 -- 13.1 VDC Effect on Negative Auxiliary -- -- -- -- -- 2.5 % CONTINUOUS 19 28 56 -- -- -- VDC TRANSIENT 120 ms 0 -- 80 -- -- -- V 1 VIN = 19, 50 VDC 1 NO LOAD -- -- 110 -- -- -- INHIBITED -- -- 50 -- -- -- 10 kHz - 10 MHz -- 10 50 -- -- -- mV mA mA p-p 68 -- -- -- -- -- % POWER DISSIPATION -- -- 25 -- -- -- W RECOVERY 1 -- -- 25 -- -- 25 ms TRANSIENT -- -- 450 -- -- 450 mV pk RECOVERY -- -- 3 -- -- 3 ms 19 - 50 - 19 VIN TRANSIENT -- -- 500 -- -- 750 mV pk RECOVERY -- -- 4 -- -- 4 ms DELAY NO LOAD AND FULL -- -- 25 -- -- 25 ms OVERSHOOT -- 0 50 -- 0 120 mV pk UNCONDITIONALLY STABLE, START-UP DELAY INCREASED -- -- 5000 -- -- 1000 F Notes: See page 15 www.craneae.com/interpoint A -- 7 LOAD FAULT 8, 9 VDC Main and Pos. Aux Neg. Aux. 1 UNITS Page 16 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Electrical Characteristics: -55C to +125C TC, 28 VDC Vin, 100% load, unless otherwise specified. triple output model - SMRT28515T PARAMETER OUTPUT VOLTAGE 5 (Main) 15 (Auxiliaries) CONDITIONS MIN TYP MAX Main and Pos. Aux 4.92 5.00 5.08 Neg. Aux. OUTPUT CURRENT 2, 3 Max Total Aux. OUTPUT POWER 2, 3 MIN TYP MAX 14.77 15.00 15.23 -14.70 -15.00 -15.30 -- -- 3.0 0 0.5 0.80 1 -- -- -- -- -- 1 0 -- 15 0 7.5 11.25 1 VIN = 19 to 56 VDC Max Total Aux -- -- -- -- -- 15 OUTPUT RIPPLE 10 kHz - 20 MHz -- -- 200 -- -- 200 Main and POS. Aux -- 5 25 LINE REGULATION VIN = 19, 50 VDC Neg. Aux. LOAD REGULATION -- -- 25 -- 20 35 Main and Pos. Aux -- 5 50 -- 5 50 VIN = 19, 50 VDC -- -- 100 -- -- 120 Neg. Aux. 1 -- -- -- -- -- 500 VIN = 19, 50 VDC 1 UNITS VDC A W mV p-p mV mV -- -- -- -- -- 600 TOTAL REGULATION 1 VOUT ALL CONDITIONS OF LINE, LOAD, AGING, TEMP AND RADIATION 4.7 -- 5.3 14.0 -- 16.0 VDC CROSS REGULATION 1, 4, 5 TC = 25C Effect on Negative Auxiliary -- -- -- -- -- 2.5 % INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT 6 EFFICIENCY 7 LOAD FAULT 8, 9 STEP LOAD RESPONSE 9, 10, 11 STEP LINE RESPONSE START-UP 11 CAPACITIVE LOAD TC = 25C 1 1, 8, 9 CONTINUOUS 19 28 56 -- -- -- VDC TRANSIENT 120 ms 0 -- 80 -- -- -- V NO LOAD -- -- 110 -- -- -- INHIBITED -- -- 50 -- -- -- 10 kHz - 10 MHz -- 10 150 -- -- -- mA p-p 70 -- -- -- -- -- % POWER DISSIPATION -- -- 25 -- -- -- W RECOVERY 1 -- -- 35 -- -- 35 ms TRANSIENT -- -- 250 -- -- 350 mV pk RECOVERY -- -- 1 -- -- 1 ms 19 - 50 - 19 VIN TRANSIENT -- -- 500 -- -- 750 mV pk RECOVERY -- -- 1.5 -- -- 1.5 ms DELAY NO LOAD AND FULL -- -- 25 -- -- 20 ms OVERSHOOT -- 0 200 -- 0 350 mV pk UNCONDITIONALLY STABLE, START-UP DELAY INCREASED -- -- 5000 -- -- 1000 F Notes: See page 15 www.craneae.com/interpoint mA Page 17 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Electrical Characteristics: -55C to +125C Tc, 28 VDC Vin, 100% load, unless otherwise specified. 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%, /+ POUT = 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 VOUT is within 1% of VOUT at final value. 10. Transition time >10 s. 11. Half load to/from full load. 12. Measured from release of inhibit or input voltage step. www.craneae.com/interpoint Page 18 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters VIN 10 V/div 28 Volt input - 35 Watt - Space qualified VIN VOUT VOUT 1 V/div -0V 5 ms/div Representative of all models Figure 7: Start-up delay SMRT2853R315T, Main VOUT (3.3 V) Attenuation (dB) 0 -100 0.03 0.10 1.0 10.0 Frequency (kHz) Representative of all models Figure 8: Audio Rejection SMRT2805S www.craneae.com/interpoint Page 19 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified BOTTOM VIEW CASE S Seal hole: 0.135 0.005 (3.43 0.13) Angled corner indicates pin 1 6 x 0.135 (3.43) dia. 1.700 (43.18) 14 1 1.500 (38.10) 13 2 1.300 (33.02) 12 3 1.100 (27.94) 11 4 0.900 (22.86) 10 5 0.700 (17.78) 9 0.500 (12.70) 8 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/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. Figure 9: Case S www.craneae.com/interpoint Page 20 of 22 SMRT28 Rev F - 2011.01.24 2x 2.550 (64.77) 2.705 max (68.71) 2x 1.550 (39.37) 0.00 2x 0.150 (3.81) 0.00 0.220 (5.59) 0.050 (1.27) 0.00 0.400 max (10.16) 3x 0.125 (3.15) 0.262 (6.65) 12 x 0.040 0.002 dia. (1.02 0.05) 12 x 0.270 max (6.86) 1.675 (42.5) 2.205 max (56.01) 3x 2.075 (52.68) Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified MIL-PRF-38534 Element Evaluation Component-Level Test Performed Space Prototype (O) 1 non-QML /H Class H QML /K Class K QML M/S 2, 3 M/S 2 P3 M/S 2 P3 n n n n n Visual n n n n Internal Visual n Element Electrical n Temperature Cycling n n Constant Acceleration n n Interim Electrical n Burn-in n Post Burn-in Electrical n Steady State Life n Voltage Conditioning Aging n Visual Inspection n Final Electrical n n n n Wire Bond Evaluation n n n n SEM n C-SAM: Input capacitors only Add'l test, not req. by H or K n n Notes: 1. Non-QML products may not meet all of the requirements of MIL-PRF-38534. 2. M/S = Active components (Microcircuit and Semiconductor Die) 3. P = Passive components, Class H and K element evaluation. Not applicable to Space Prototype ("O") element evaluation. Definitions: Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534 SEM: Scanning Electron Microscopy C-SAM: C - Mode Scanning Acoustic Microscopy Screening Table 1: Element Evaluation www.craneae.com/interpoint Page 21 of 22 SMRT28 Rev F - 2011.01.24 Crane Aerospace & Electronics Power Solutions SMRT28 Single, Dual and Triple Space DC/DC Converters 28 Volt input - 35 Watt - Space qualified Class H and K, MIL-PRF-38534 Environmental Screening and RHA1 NON-QML 2 Test Performed /OO Non-destruct bond pull, Method 2023 Class H /HP /HR 4 4 n /KP Class K /KR /KF n n n n n n n n n n n n n n n n Pre-cap Inspection, Method 2017, 2032 QML 3 Temperature Cycle (10 times) Method 1010, Cond. C, -65C to +150C, ambient Constant Acceleration Method 2001, 3000 g (Qual 5000 g) n PIND, Test Method 2020, Cond. A Pre burn-in test, Group A, Subgroups 1 and 4 Burn-in Method 1015, +125C case, typical n n n n n n n4 n4 n n n n n n n n n n n n n 5 96 hours n 160 hours 2 x 160 hours (includes mid-BI test) Final Electrical Test, MIL-PRF-38534, Group A, Subgroups 1 through 6, -55C, +25C, +125C case n n n n n n Gross Leak, Method 1014, Cond. C n n n n n n Fine Leak, Method 1014, Cond. A n n n n n n n n n n4 n4 n4 n n n Hermeticity Test Radiography, Method 2012 Post Radiography Electrical Test, +25C case Final visual inspection, Method 2009 n n 6 RHA P: 30 kRad(Si) total dose RHA R: 100 kRad(Si) total dose 6 RHA F: 300 kRad(Si) total dose n n n n n 6 n SEE LET 85 MeV-cm2/mg 7 n n n n n Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. Redmond site, Interpoint brand, has a DSCC approved Radiation Hardness Assurance plan. Our SMD products with RHA "P", "R" or "F" code met DSCC requirements. 2. Space Prototypes are non-QML products and may not meet all of the requirements of MIL-PRF-38534. "O" in the RHA designator position in Interpoint model numbers indicates DSCC RHA "-" defined as no RHA. 3. 4. 5. 6. 7. All processes are QML qualified and performed by certified operators. Not required by DSCC but performed to assure product quality. Burn-in temperature designed to bring the case temperature to +125C minimum. High dose rate testing. No upset at the pins. Screening Table 2: Environmental Screening SMRT28 Single, Dual and Triple SMRT28 Rev F - 2011.01.24. This revision supersedes all previous releases. All technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. Crane Electronics, Inc reserves the right to make changes in products or specifications without notice. SMRT Series is a trademark of Crane Electronics, Inc. Copyright (c) 1999 - 2011 Crane Electronics, Inc. All rights reserved. www.craneae.com/interpoint Page 22 of 22