Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converters 28 Volt input - 15 Watt Features * Fully qualified to Class H or K * -55C to +125C operation * 16 to 40 VDC input * Fully Isolated * Rad hard optocoupler feedback * Fixed frequency, 550 kHz typical * Topology - Single Ended Forward * Transient protection 50 V/120 ms * Inhibit function * Sync function * Indefinite short circuit protection * Undervoltage lockout * Up to 82% efficiency models VDC single 2.5 3.3 5 12 15 description The SMHF SeriesTM of 28 V DC/DC converters offers a wide input voltage range of 16 to 40 volts and up to 15 watts of output power. The units are capable of withstanding short term transients up to 50 volts. The package is a hermetically sealed, projection-welded metal case. Flanged and non-flanged models are available. Screening SMHF converters offer screening options to Space Prototype (O), Class H, or Class K. Radiation tolerant to Radiation Hardness Assurance (RHA) levels of "-" (O) or "R", 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. Converter Design The SMHF converters are switching regulators that use a quasisquare wave, single-ended forward converter design with a constant switching frequency of 550 kHz. Isolation between input and output circuits is provided with a transformer in the forward path and a temperature compensated opto-coupler in the feedback control loop. The opto-coupler is radiation hardened and is especially selected for space applications. For the SMHF dual output models, cross regulation is maintained by tightly coupled output magnetics. Up to 70% of the total output power is available from either output, providing the opposite output is simultaneously carrying 30% of the total output power. Predictable current limit is accomplished by directly monitoring Crane Aerospace & Electronics Electronics Group (Interpoint Brand) PO Box 97005 * Redmond WA 98073-9705 425.882.3100 * electronics@craneae.com www.craneae.com dual 5 12 15 the output load current and providing a constant current output above the overload point. Higher Power Density The SMHF Series offers a new standard of performance for small size and high power density. At just 0.33 inch high and a total footprint of 1.7 in2, this low profile package offers a total power density of up to 30 watts per cubic inch. Low Noise, High Audio Rejection The SMHF converter's feed-forward compensation system provides excellent dynamic response and noise rejection. Audio rejection is typically 50 dB. Typical output voltage response for a 50% to 100% step load transient is as low as 1.3% with a 150 S recovery time. Input ripple current is typically 35 mA p-p with output ripple voltage typically 50 mV p-p . Inhibit Function SMHF converters provide an inhibit terminal that can be used to disable internal switching, resulting in no output and very low quiescent input current. The converter is inhibited when a logic low (0.8 - output disabled) is applied to the inhibit pin. The unit is enabled when the pin, which is internally connected to a pull-up resistor, is left unconnected or is connected to an opencollector gate. The open circuit output voltage associated with the inhibit pin is 8.5 to 12 VDC. In the inhibit mode, a maximum of 4 mA must be sunk from the inhibit pin at 28 VDC input. Page of 15 Rev D - 20070404 Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converters 28 Volt input - 15 Watt Synchronization A synchronization feature is included with the SMHF Series that allows the user to match the switching frequency of the converter to the frequency of the system clock. This allows the user to adjust the nominally 550 kHz operating frequency to any frequency within the range of 500 kHz to 600 kHz. This is initiated by applying a compatible input of the desired frequency to pin 5. The initial transition on the sync pin should be a negative transition (i.e. from high state to low state) Undervoltage Lockout Undervoltage lockout prevents the units from operating below approximately 14 VDC input voltage to keep system current levels smooth, especially during initialization or re-start operations. Short Circuit Protection SMHF Series converters provide short circuit protection by restricting the output current to approximately 115% of the full load output current. The output current is sensed in the secondary stage to provide highly predictable and accurate current limiting, and to eliminate foldback characteristics. Positive Input 5 H Positive Output 2 F ID Inhibit PWM Controller FET Driver Limit Ref. IC Output Common Input Common Figure 1: SMHF Single Output - Block Diagram www.craneae.com Page of 15 Rev D - 20070404 Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converters 28 Volt input - 15 Watt Operating Conditions and characteristics Input Voltage Range * 16 to 40 VDC continuous * 50 V for up to 50 msec transient Power Dissipation (Pd) *8W Output Power * up to 15 watts depending on model Lead Soldering Temperature (10 sec per lead) * 300C Storage Temperature Range (Case) * -65C to +150C Case Operating Temperature (Tc) * -55C to +125C full power * -55C to +135C absolute Derating Output Power/Current (Tc) * Linearly from 100% at 125C to 0% at 135C Output Voltage Temperature Coefficient * 100 ppm /C typical * 150 ppm/C maximum Input to Output Capacitance * 60 pF typical Current Limit * 115% of full load typical Isolation * 100 megohm minimum at 500 VDC * Any pin to case, except case pin Audio Rejection * 50 dB typical Conversion Frequency (55C to +125C Tc) * Free run 550 kHz typical 480 kHz min, 620 kHz max Inhibit Pin Voltage (unit enabled) * 8.5 to 12 V Undervoltage Lockout * 14 V input typical Sync and inhibit Sync In (500 to 600 kHz) * Duty cycle 40% to 60% * Logic low 0.8 V max * Logic high 4.5 V min, 5 V max * Referenced to input common * If not used, connect to input common Inhibit TTL Open Collector * Logic low (output disabled) Logic low voltage 0.8 V max Inhibit pin current 12 mA max * Referenced to input common * Logic high (output enabled) Open collector or unconnected mechanical and environmental Size (maximum) Non flanged 1.460 x 1.130 x 0.330 (37.08 x 28.70 x 8.38 mm). See case E1 for dimensions. Flanged 2.005 x 1.130 x 0.330 (50.93 x 28.70 x 8.38 mm). See case G1 for dimensions. Weight (maximum) 30 grams typical Screening Space Prototype, Class H, or Class K Radiation tolerant to Radiation Hardness Assurance (RHA) levels of "-" (O) or "R", per MIL-STD-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. Available configurations: OO, HO, HR, KR www.craneae.com Page of 15 Rev D - 20070404 Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converters 28 Volt input - 15 Watt PIN OUT PinSingle OutputDual Output 1 Inhibit Inhibit 2 No connection Positive Output 3 Output Common Output Common 4 Positive Output Negative Output 51 Sync Sync 6 Case Ground Case Ground 7 Input Common Input Common 8 Positive Input Positive Input 1. If Sync is not used, pin 5 should be connected directly to input common. Dot on top of cover indicates pin one. 1 2 3 4 5 BOTTOM VIEW SMHF SINGLE AND DUAL NON-FLANGED OR FLANGED 8 7 6 Dotted line outlines flanged package option. See cases E1 and G1 for dimensions. Figure 2: Pin Out www.craneae.com Page of 15 Rev D - 20070404 Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converters 28 Volt input - 15 Watt model numbering key Base Model Input Voltage SMHF smd numbers 28 05 S F / K Standard Microcircuit Drawing (SMD) R IN PROCESS 5962-0251002HXC 5962-9213902HXC 5962-9166402HXC 5962-9160102HXC 5962-9555902HXC 5962-9214402HXC 5962-9161402HXC Output Voltage Number of Outputs (S = single, D = dual) Case Option (Non-flanged case has no designator in this position) SMHF Similar Part SMHF282R5S/HO SMHF283R3S/HO SMHF2805S/HO SMHF2812S/HO SMHF2815S/HO SMHF2805D/HO SMHF2812D/HO SMHF2815D/HO To indicate the flanged case option change the "X" to "Z" In the SMD number. The SMD number shown is for Class H screening, non-flanged, and no Radiation Hardness Assurance (RHA) level. See the SMD for the numbers for other screening and radiation levels. For exact specifications for an SMD product, refer to the SMD drawing. Call your Interpoint representative for status on the SMHF SMD releases which are "in process." SMDs can be downloaded from: http://www.dscc.dla.mil/programs/smcr Screening Radiation Level Model Selection SMHF28 Base model Vout value number of outputs / case option screening Choose one from each of the following rows Vout value Number of outputs Case option Screening for singles 2.5, 3.3, 5, 12, 15 for duals: 5, 12, 15 "R" = decimal point, 3R3 = 3.3VDC S (single) or D (dual) non-flanged, leave blank F - flanged OO* - Space prototype, HO, HR, KR *Interpoint model numbers use an "O" in the RHA designator position to indicate the "-" (dash) Radiation Hardness Assurance level of MIL-PRF-38534, which is defined as "no RHA" www.craneae.com Page of 15 Rev D - 20070404 Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converters 28 Volt input - 15 Watt Electrical Characteristics: 25C Tc, 28 VDC Vin, 100% load, radiation level O, unless otherwise specified. single output models PARAMETER CONDITIONS OUTPUT VOLTAGE TC = 25C OUTPUT CURRENT OUTPUT POWER OUTPUT RIPPLE smhf282r5s MIN TYP MAX smhf283r3s MIN TYP MAX smhf2805s MIN TYP 2.475 2.5 2.525 3.27 3.30 3.33 4.95 Vin = 16 to 40 VDC -- -- -- 2.4 -- Vin = 16 to 40 VDC 0 -- 6 10 kHz - 2 MHz -- 15 50 TC = -55C TO +125C -- 25 LINE REGULATION VIN = 16 TO 40 VDC -- 5 LOAD REGULATION NO LOAD TO FULL -- 28 INPUT VOLTAGE NO LOAD TO FULL CONTINUOUS 16 28 TRANSIENT 120 ms1 0 -- INPUT CURRENT INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT2 STEP LOAD RESPONSE START-UP 0 TO 28 VDC CAPACITIVE LOAD 5.05 UNITS VDC -- 2.4 A 0 -- 12 W 160 -- 30 80 80 240 -- 150 240 -- 5 100 -- 5 100 50 -- 20 50 -- 20 50 40 16 28 40 16 28 40 mV VDC 50 0 -- 50 0 -- 50 V 65 25 40 5 12 0 -- 8 -- 60 50 -- 50 NO LOAD -- 20 40 -- 25 -- 6 12 -- 5 10 kHz - 10 MHz TC = -55C TO +125C -- -- 30 -- 50 50 -- -- 45 -- 80 120 -- -- 35 -- 80 120 -- 12 -- mV p-p mV mA mA p-p TC = 25C 65 67 -- 68 73 -- 73 75 -- % SHORT CIRCUIT POWER DISSIPATION -- 3 6 -- 5 8 -- 3.5 8 W RECOVERY1, 3 -- 7.5 30 -- 7.5 30 -- 7.5 30 ms 150 400 -500 150 500 mV pk 300 -- 800 -800 1.2 -- 50% - 100% - 50% TRANSIENT4 16 - 40 -16 VDC TRANSIENT4 -200 50 200 -400 -- 50 270 -- -800 550 800 -800 1.2 -- RECOVERY3 -- 0.8 150 550 0.8 550 0.8 300 ms 800 mV pk 1.2 ms DELAY -- 10 20 -- 10 10 25 ms -- -- 250 -- 200 300 -- 100 600 mV pk TC = 25C -- -- -- -- 300 -- -- 300 F -- 25 -- 150 OVERSHOOT1, 4 Notes 1. Guaranteed by design, not tested. 2. Indefinite short circuit protection not guaranteed above 125C (case) 3. Recovery time is measured from application of the transient to the point at which Vout is within regulation. www.craneae.com 5.00 INHIBITED RECOVERY3 STEP LINE RESPONSE1 2.4 -- MAX 4. Step transition time >10s. Page of 15 Rev D - 20070404 Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converters 28 Volt input - 15 Watt Electrical Characteristics: 25C Tc, 28 VDC Vin, 100% load, radiation level O, unless otherwise specified. single output models PARAMETER smhf2812s CONDITIONS OUTPUT VOLTAGE TC = 25C OUTPUT CURRENT OUTPUT POWER OUTPUT RIPPLE MIN TYP MAX MIN TYP MAX UNITS 11.88 12.00 12.12 14.85 15.00 15.15 Vin = 16 to 40 VDC -- -- 1.25 -- -- 1.00 A Vin = 16 to 40 VDC 0 -- 15 0 -- 15 W 10 kHz - 2 MHz -- 60 150 -- 60 175 TC = -55C TO +125C -- 50 200 -- 100 260 LINE REGULATION VIN = 16 TO 40 VDC -- 5 100 -- 5 100 LOAD REGULATION NO LOAD TO FULL -- 20 50 -- 20 50 mV INPUT VOLTAGE NO LOAD TO FULL CONTINUOUS 16 28 40 16 28 40 VDC 0 -- 50 0 -- 50 V INPUT CURRENT INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT2 STEP LOAD RESPONSE TRANSIENT 120 ms1 NO LOAD -- 25 55 -- 25 62 INHIBITED -- 5 12 -- 5 12 10 kHz - 10 MHz TC = -55C TO +125C -- -- 35 -- 35 -- 80 120 STEP LINE RESPONSE1 CApACITIVE LOAD mV p-p mV mA mA p-p TC = 25C 76 79 -- 78 80 -- % -- 3.5 8 -- 3.5 8 W RECOVERY1, 3 -- 7.5 30 -- 7.5 30 ms -700 150 200 800 mV pk 50% - 100% - 50% TRANSIENT4 16 - 40 -16 VDC TRANSIENT4 RECOVERY3 START-UP 0 TO 28 VDC 80 -- 120 -- VDC SHORT CIRCUIT POWER DISSIPATION RECOVERY3 -- -800 -- 150 550 0.8 700 -800 1000 -- 800 -800 1.2 -- 600 550 0.8 1200 S 800 mV pk 1.2 ms DELAY -- 10 25 -- 10 25 OVERSHOOT1, 4 -- 200 1200 -- 200 1500 mV pk TC = 25C -- -- 100 -- -- 100 F Notes 1. Guaranteed by design, not tested. 2. Indefinite short circuit protection not guaranteed above 125C (case) 3. Recovery time is measured from application of the transient to the point at which Vout is within regulation. www.craneae.com smhf2815s 4. Step transition time >10s. Page of 15 Rev D - 20070404 ms Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converters 28 Volt input - 15 Watt Electrical Characteristics: 25C Tc, 28 VDC Vin, 100% load, radiation level O, unless otherwise specified. DUAL output models PARAMETER OUTPUT VOLTAGE SMHF2805D CONDITIONS + VOUT SMHF2812D MIN TYP MAX 4.95 5.05 11.88 12.00 12.12 4.92 5.00 MAX MIN TYP MAX 14.85 15.00 15.15 UNITS VDC 5.08 11.82 12.00 12.18 14.78 15.00 15.23 OUTPUT CURRENT2 Vin = 16 to 40 VDC -- 1.2 1.68 -- 0.625 0.875 -- 0.5 0.7 A OUTPUT POWER2 Vin = 16 to 40 VDC -- -- 12 -- -- -- 15 W 10 kHz - 2 MHz -- 60 160 -- 70 175 -- 70 175 TC = -55C TO +125C -- 100 240 -- 100 275 -- 100 275 - VOUT OUTPUT RIPPLE VOUT LINE REGULATION VIN = 16 TO 40 VDC BALANCED LOAD LOAD REGULATION NO load TO FulL BALANCED LOAD 5.00 MIN TYP SMHF2815D -- 15 mV p-p + VOUT -- 5 50 -- 5 50 -- 5 50 - VOUT -- -- 100 -- -- 100 -- -- 100 + VOUT -- 20 50 -- 20 50 -- 20 50 - VOUT -- -- 150 -- -- 150 -- -- -- 6 7.5 -- 3 6 -- 3 6 INPUT VOLTAGE EFFECT ON - VOUT CONTINUOUS 16 28 40 16 28 40 16 28 40 VDC NO LOAD TO FULL TRANSIENT 50 ms1 -- -- 50 -- -- 50 -- -- 50 V NO LOAD -- 20 50 -- 25 50 -- 25 50 INHIBITED -- 6 12 -- 5 12 -- 5 12 10 kHz - 10 MHz -- 30 80 -- 40 80 -- 40 80 TC = -55C TO +125C -- 60 120 -- 55 120 -- 55 120 CROSS REGULATION3 INPUT CURRENT INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT4 STEP LOAD RESPONSE6 BALANCED LOADS STEP LINE RESPONSE1 VOUT START-UP 0 TO 40 V CAPACITIVE LOAD mV 150 % mA mA p-p 75 77 -- 76 81 -- 76 82 -- % SHORT CIRCUIT POWER DISSIPATION -- 3 6 -- 3 6 -- 3 6 W RECOVERY1, 5 -- 7.5 30 -- 7.5 50 -- 7.5 50 ms + VOUT -600 200 600 -600 300 600 -600 300 600 mV pk - VOUT -600 150 600 -600 100 600 -600 100 600 mV pk 500 -- 500 -- 600 ms 800 -750 750 mV pk 1.2 -- 1.2 ms 50% - 100% - 50% TRANSIENT7 RECOVERY5 -- 16 - 40 -16 VDC TRANSIENT7 -800 RECOVERY5 -- DELAY -- OVERSHOOT1, 7 0 TC = 25C -- Notes 1. Guaranteed by design, not tested. 2. Up to 70% of the total output power is available from either output providing the opposite output is simultaneously carrying 30% of the total output power. Each output must carry a minimum of 30% of the total output power in order to maintain regulation on the negative output. 3. Effect on -Vout for the following conditions, percentages are of total power: +Po = 50% to 10% and -Po = 50%, +Po = 50% and -Po = 50% to 10% and from +Po = 70%/-Po = 30% to +Po = 30%/-Po = 70% all conditions are referenced to the balanced loads condition: 50%/50% www.craneae.com mV 150 600 0.8 12 30 -- 100 500 0 -- 47 -- 200 550 0.8 750 -750 1.2 -- 12 25 -- 200 500 0 -- 10 -- 200 550 0.8 12 25 ms 200 500 mV pk -- 10 F 4. Indefinite short circuit protection not guaranteed above 125C (case) 5. Recovery time is measured from application of the transient to point at which Vout is within regulation. 6. Response of either output with the opposite output held at half of the total output power. 7. Step transition time >10s. Page of 15 Rev D - 20070404 Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converters 28 Volt input - 15 Watt Typical Performance Curves: 25C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. 90 90 70 EFFICIENCY (%) 40V 28V 60 50 40 70 40V 60 50 2 4 6 8 10 OUTPUT POWER (Watts) 40 12 2 4 6 10 12 40 14 15 2 4 16V EFFICIENCY (%) 70 40V 60 28V 40 6 8 10 12 70 40V 60 28V 50 50 4 14 15 80 80 50 12 90 16V 28V 10 Figure 5 16V 40V 8 SMHF2815S EFFICIENCY 90 70 6 OUTPUT POWER (Watts) Figure 4 80 EFFICIENCY (%) 8 SMHF2812S EFFICIENCY 90 2 40V 28V 60 OUTPUT POWER (Watts) Figure 3 40 70 50 SMHF 2805S EFFICIENCY 60 16V 80 28V EFFICIENCY (%) EFFICIENCY (%) 80 EFFICIENCY (%) 16V 80 90 16V 2 4 6 8 10 12 40 14 15 Figure 6 4 6 8 10 12 14 SMHF2815D EFFICIENCY SMHF2812D EFFICIENCY SMHF2805D EFFICIENCY 2 OUTPUT POWER (Watts) OUTPUT POWER (Watts) OUTPUT POWER (Watts) Figure 7 Figure 8 0 -20 -40 -50 -60 100% to 50% VOUT 100mV/div. 500mV/div. -30 -70 50% to 100% -80 -90 -100 0.1 1 10 FREQUENCY (kHz) SMHF SERIES AUDIO REJECTION Figure 9 www.craneae.com 100 20V/div. ATTENUATION (dB) -10 VIN 1ms/div 16V TO 40V SMHF2805S STEP LINE RESPONSE Figure 10 Page of 15 Rev D - 20070404 50s/div 50% 100% SMHF2805S STEP LOAD RESPONSE Figure 11 Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converters 28 Volt input - 15 Watt Typical Performance Curves: 25C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. 200mV/div. 20V/div. VIN 100mV/div. 100% to 10% +VOUT POUT= 12W 1V/div. VOUT VIN 1 ms/div 16V TO 40V 2 ms/div 200s/div 10% 100% SMHF2805S STEP LOAD RESPONSE SMHF2815D STEP LINE RESPONSE SMHF2805S TURN-ON INTO FULL LOAD Figure 14 Figure 13 Figure 12 100% to 50% 20V/div. 10% to 100% PO= 7.5 W PO= 7.5 W -VOUT 100mV/div. 100mV/div. 5V/div. 100% to 20% +VOUT 20V/div. 20% to 100% 50% to 100% 50s/div 50% 100% SMHF2815D +VOUT STEP LOAD RESPONSE 50s/div 20% 100% SMHF+2815D VOUT STEP LOAD RESPONSE 10 Figure 17 10 2812D 2815D 0 -5 2805D 0 20 40 60 80 100 POSITIVE OUTPUT LOAD (% OF TOTAL LOAD) -VOUT WITH SHIFT IN LOAD BALANCE CROSS REGULATION 16 SMHF2805S&D 2805D 8 6 2812D 4 COND A 2 0 2815D -2 COND B -4 2812D -6 -8 -10 20 30 15 14 40 50 OUTPUT LOAD (%) COND. A: 50% LOAD +V; 50% to 10% -V COND. B: 50% LOAD -V; 50% to 10% +V SMHF2812S&D SMHF2815S&D 13 12 10 2805D 10 INPUT VOLTAGE (Volts) 5 -VOUT VOLTAGE CHANGE (%) -V OUT VOLTAGE CHANGE (%) 2 ms/div SMHF2815D TURN-ON INTO FULL LOAD Figure 16 Figure 15 -10 VIN 11 12 13 www.craneae.com Figure 19 Page 10 of 15 Rev D - 20070404 15 LOW LINE DROPOUT VS. LOAD SMHF2805D/SMHF2812D/SMHF2815D CROSS REGULATION Figure 18 14 OUTPUT POWER (Watts) 50 mV DROP Figure 20 Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converter Cases 28 Volt input - 15 Watt BOTTOM VIEW CASE E1 Projection Weld Squared corner and dot on top of case indicate pin one. 1.130 max. (28.70) 0.960 (24.38) 1 2 3 4 5 0.030 dia. (0.76) 8 0.160 (4.06) 7 6 1.460 max. (37.08) 1.105 (28.07) 0.905 (22.99) 0.705 (17.91) 0.505 (12.83) 0.205 (5.21) 0.000 0.25 (6.35) 0.000 0.330 max. (8.38) 0.000 Case dimensions in inches (mm) Tolerance 0.005 (0.13) for three decimal places 0.01 (0.3) for two decimal places unless otherwise specified CAUTION Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300C for 10 seconds per pin. Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins #52 alloy/Gold compression glass seal Case E1, Rev C, 20061221 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 21: Case E1 www.craneae.com Page 11 of 15 Rev D - 20070404 Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converter Cases 28 Volt input - 15 Watt BOTTOM VIEW CASE G1 Flanged cases: Designator "F" required in Case Option position of model number. Projection Weld Squared corner and dot on top of case indicate pin one. 1.130 max. (28.70) 0.960 (24.38) 0.030 dia. (0.76) 1 2 3 4 5 0.128 dia (3.25) 0.560 (14.22) 8 0.160 (4.06) 7 6 Flange thickness: 0.047 (1.19) 1.590 (40.39) 2.005 max. (50.93) 1.105 (28.07) 0.905 (22.99) 0.705 (17.91) 0.505 (12.83) 0.205 (5.21) 0.000 0.140 (3.56) 0.25 (6.35) 0.000 0.330 max. (8.38) 0.000 2.005 max (50.93) 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/Gold Cover Cold Rolled Steel/Nickel/Gold Pins #52 alloy/Gold compression glass seal Case G1, Rev C, 20061221 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 22: Case G1 www.craneae.com Page 12 of 15 Rev D - 20070404 Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converters 28 Volt input - 15 Watt Class H and K, MIL-PRF-38534 Element Evaluation Test Performed (component level) Space Prototype OClass HClass K non-QML1 QML QML M/S2 P3 M/S2 P3 M/S2 P3 Element Electrical yes no yes yes yes yes Element Visual no no yes yes yes yes Internal Visual no N/A yes N/A yes N/A Temperature Cycling no no no no yes yes Constant Acceleration no no no no yes yes Interim Electrical no N/A no N/A yes N/A Burn-in no N/A no N/A yes N/A Post Burn-in Electrical no N/A no N/A yes N/A Steady State Life no N/A no N/A yes N/A Voltage Conditioning Aging N/A no N/A no N/A yes Visual Inspection no no N/A no N/A yes Final Electrical no no yes yes yes yes Wire Bond Evaluation4 no no yes yes yes yes SEM SLAMTM/C-SAM: Input capacitors only (Add'l test, not req. by H or K) no N/A no N/A yes N/A no no no yes no yes Notes: 1. Non-QML products do not meet all of the requirements of MIL-PRF-38534. 2. M/S = Active components (Microcircuit and Semiconductor Die) 3. P = Passive components 4. Not applicable to EMI filters that have no wirebonds. Definitions: Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534 SEM: Scanning Electron Microscopy SLAMTM: Scanning Laser Acoustic Microscopy C-SAM: C - Mode Scanning Acoustic Microscopy www.craneae.com Page 13 of 15 Rev D - 20070404 Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converters 28 Volt input - 15 Watt Class H and K, MIL-PRF-38534 Environmental Screening Test Performed (end item level) 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 Space Prototype O non-QML1 Class H, QML no yes3 Class K, QML yes yes yes yes yes yes yes yes yes yes no yes3 yes yes yes yes Burn-in Method 1015, 125C case, typical 96 hours yes no no 160 hours no yes no 2 x 160 hour (includes mid BI test) no no yes Final electrical test MIL-PRF-38534 Group A, Subgroups 1 through 6 -55C, +25C, +125C case yes yes yes Radiography Method 2012 N/A N/A yes Post Radiography Electrical Test Room temperature N/A N/A yes3 Hermeticity test Fine Leak, Method 1014, Cond. A yes yes yes Gross Leak, Method 1014, Cond. C yes yes yes Final visual inspection Method 2009 yes yes yes Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. Space Prototype (O), non-QML products, do not meet all of the requirements of MIL-PRF-38534. 2. Not applicable to EMI filters that have no wirebonds. 3. Not required by DSCC but performed to assure product quality. www.craneae.com Page 14 of 15 Rev D - 20070404 Crane Aerospace & Electronics Power Solutions SMHF Single and Dual DC/DC Converters 28 Volt input - 15 Watt Class H and K, MIL-PRF-38534 Radiation Assurance Product Level AvailabilityEnvironmental Screening Levels space Prototype OClass H Class K Radiation Hardness non-QML3 QML QML Assurance Levels O2: Standard, no radiation guarantee R: Radiation tolerant - Tested lots Up to 100 K Rads (Si) total dose SEU guarantee up to 40 MeV OO HO N/A N/A HR4 KR4 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 MIL-PRF-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 "R" code meet DSCC requirements. SMHF Single and Dual, Rev D - 20070404. 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. SMHF Series is a trademark of Interpoint. Copyright (c) 1999 - 2007 Interpoint Corporation. All rights reserved. www.craneae.com Page 15 of 15