FEATURES • • • • • • • • • • • DC/DC CONVERTERS 120 VOLT INPUT Fully qualified to Class H –55° to +125°C operation 80 to 175 VDC input Fully Isolated Magnetic feedback Fixed frequency, 600 kHz typical Topology – Single Ended Forward Inhibit input and output side Sync in and out Indefinite short circuit protection Size (max.): Remote sense on single output models Weight: • Up to 85% efficiency Screening: • Parallelable up to 180 watts SMHP120 SERIES 65 WATT MODELS VDC OUTPUT SINGLE 5 12 15 DUAL ±12 ±15 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16mm) See Section B8, case U1, for dimensions. 100 grams maximum Standard or Class H (MIL-PRF-38534) See Section C2 for screening options, see Section A5 for ordering information. DESCRIPTION The SMHP120™ Series DC/DC converters provide up to 65 watts of output power over the full -55° to 125°C temperature range. SMHP120 models operate from a MIL-STD-704 nominal 120 volt DC power bus – from 80 to 175 VDC – continuous operation and provide isolated outputs at 5, 12, 15, and 28 VDC. Parallel operation for all loading conditions is supported without any requirement for external components. SCREENING SMHP120 converters offer three screening options – Standard, or Class H. See Section C2, Quality Assurance, pages C2-7 through C2-9, for descriptions. PARALLEL OPERATION Up to five single output SMHP converters may be used in parallel to power a single load by simply connecting the share pins of all units. Units in this configuration have a 90% current sharing accuracy over all loading conditions, and provide true n+1 operation. FEATURES Synchronization – units may be synchronized to an external clock or to one another by using sync in and sync out pins provided on each unit. The converters have a nominal switching frequency of 600 kHz, but may be synchronized at any frequency from 525 to 675 kHz. Low voltage lock-out – shuts down when the input line voltage falls below approximately 50 VDC to provide smooth initialization. CONVERTER DESIGN SMHP120 DC/DC converters are constant frequency, pulse width modulated switching power supplies which use a quasi-square wave, two-switch single-ended forward converter design. Tight load regulation is achieved through a wide-bandwidth magnetic feedback circuit. SMHP converters meet a wide variety of military/aerospace performance and environmental specifications. Their continuous operation input voltage (80 to 175) meets the normal operating limits of MIL-STD-704D. The units are built as fully hermetic thick film hybrids in Interpoint’s MIL-STD-1772 certified facilities. Continuous short circuit protection – using foldback current limit set at approximately 125%. Soft-start – at both turn-on and recovery after load fault conditions. Remote sense – to provide automatic compensation for voltage drops on output lines on single output models. For more information, contact your Interpoint representative listed in Section A5. 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. SMHP120 is a trademark of Interpoint. Copyright © 1999 Interpoint. All rights reserved. B1-4 CASES CASE U Angled corner indicates pin one 1.505 max (38.23) CASE U TOP VIEW (PIN SIDE) See Figures 55 and 56 for dimensions 3.005 (76.33) max. Note: Pins are shown for Case U1. Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins #52 alloy/Gold compression glass seal Case dimensions in inches (mm) Tolerance ±0.005 (0.13) for three decimal places ±0.01 (0.2) 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. FIGURE 54: CASE U MAXIMUM DIMENSIONS B8-36 CASES CASE U TOP VIEW CASE U1 MFL Series and MHP Series: Screening – Standard, ES or 883 MFLHP Series, FMD270 EMI Filter, and FMD28-461SL EMI Filters: Screening – Standard or ES SMFL, SMFLHP, SMHP, and SSP Series; SFCS, and SFME EMI Filters: Screening – Standard, Class H or K HUM70 Module and LCM Module: Screening – Standard or ES Seam Seal Angled corner indicates pin one. 0.23 (5.8) Lead Length 0.128 dia (3.25). 1.505 (38.23) max. 0.040 dia (1.02) 1.380 (35.05) 1.250 (31.75) 1 12 1.050 (26.67) 2 11 0.850 (21.59) 3 10 0.650 (16.51) 4 9 0.450 (11.43) 5 8 0.250 (6.35) 6 7 0.220 (5.59 0.050 (1.27) 0.000 0.400 (10.16) max. 2.880 (73.15) 3.005 (76.33) max. 2.750 (69.85) 0.000 0.120 (3.05) 0.250 (6.35) 0.120 (3.05) 0.000 FIGURE 55: CASE U1 B8-37 QA SCREENING SPACE PRODUCTS SPACE PRODUCTS ELEMENT EVALUATION TEST PERFORMED (COMPONENT LEVEL) STANDARD CLASS (O) H M/S P M/S P CLASS K M/S P Element Electrical yes no yes yes yes yes Element Visual no no yes yes yes yes Internal Visual no no yes no yes no Temperature Cycling no no no no yes yes Constant Acceleration no no no no yes yes Interim Electrical no no no no yes no Burn-in no no no no yes no Post Burn-in Electrical no no no no yes no Steady State Life no no no no yes no Voltage Conditioning /Aging no no no no no yes Visual Inspection no no no no no yes Final Electrical no no yes yes yes yes Wire Bond Evaluation* no no yes yes yes yes SEM SLAM™/C-SAM: Input capacitors only (Add’l test, not req. by H or K) no no no no yes no no no no yes no yes Notes M/S P * Active components (Microcircuit and Semiconductor Die) Passive components Not applicable to EMI filters that have no wirebonds Definitions Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534 SEM: Scanning Electron Microscopy SLAM™: Scanning Laser Acoustic Microscopy C-SAM: C - Mode Scanning Acoustic Microscopy Applies to the following products: SMFLHP Series SMFL Series SMHP Series (O&H only) SMTR Series SSP Series SMHF Series SMSA Series SLH Series SLIM Module SFME120 EMI Filter SFME28 EMI Filter SFCS EMI Filter SFMC EMI Filter STF EMI Filter C2-7 QA SCREENING SPACE PRODUCTS ENVIRONMENTAL SCREENING TEST PERFORMED (END ITEM LEVEL) Non-destruct bond pull* Method 2023 Pre-cap inspection Method 2017, 2032 Temperature cycle Method 1010, Cond. C Constant acceleration Method 2001, 3000 g PIND Test Method 2020, Cond. B Radiography Method 2012 Pre burn-in test Burn-in, Method 1015, 125°C 96 hours 160 hours 2 x 160 hour (includes mid BI test) Final electrical test MIL-PRF-38534, Group A Hermeticity test Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Final visual inspection Method 2009 STANDARD (O) CLASS H CLASS K no no yes yes yes yes yes yes yes yes yes yes no no yes no yes no yes yes yes yes no no no yes no no no yes yes yes yes yes yes yes yes yes yes yes yes yes Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Note * Not applicable to EMI filters that have no wirebonds. Applies to the following products: SMFLHP Series SMFL Series SMHP Series (O&H only) SMTR Series SSP Series C2-8 SMHF Series SMSA Series SLH Series SLIM Module SFME120 EMI Filter SFME28 EMI Filter SFCS EMI Filter SFMC EMI Filter STF EMI Filter QA SCREENING SPACE PRODUCTS SPACE PRODUCTS ELEMENT EVALUATION TEST PERFORMED (COMPONENT LEVEL) STANDARD CLASS (O) H M/S P M/S P CLASS K M/S P Element Electrical yes no yes yes yes yes Element Visual no no yes yes yes yes Internal Visual no no yes no yes no Temperature Cycling no no no no yes yes Constant Acceleration no no no no yes yes Interim Electrical no no no no yes no Burn-in no no no no yes no Post Burn-in Electrical no no no no yes no Steady State Life no no no no yes no Voltage Conditioning /Aging no no no no no yes Visual Inspection no no no no no yes Final Electrical no no yes yes yes yes Wire Bond Evaluation* no no yes yes yes yes SEM SLAM™/C-SAM: Input capacitors only (Add’l test, not req. by H or K) no no no no yes no no no no yes no yes Notes M/S P * Active components (Microcircuit and Semiconductor Die) Passive components Not applicable to EMI filters that have no wirebonds Definitions Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534 SEM: Scanning Electron Microscopy SLAM™: Scanning Laser Acoustic Microscopy C-SAM: C - Mode Scanning Acoustic Microscopy Applies to the following products: SMFLHP Series SMFL Series SMHP Series (O&H only) SMTR Series SSP Series SMHF Series SMSA Series SLH Series SLIM Module SFME120 EMI Filter SFME28 EMI Filter SFCS EMI Filter SFMC EMI Filter STF EMI Filter C2-7 QA SCREENING SPACE PRODUCTS ENVIRONMENTAL SCREENING TEST PERFORMED (END ITEM LEVEL) Non-destruct bond pull* Method 2023 Pre-cap inspection Method 2017, 2032 Temperature cycle Method 1010, Cond. C Constant acceleration Method 2001, 3000 g PIND Test Method 2020, Cond. B Radiography Method 2012 Pre burn-in test Burn-in, Method 1015, 125°C 96 hours 160 hours 2 x 160 hour (includes mid BI test) Final electrical test MIL-PRF-38534, Group A Hermeticity test Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Final visual inspection Method 2009 STANDARD (O) CLASS H CLASS K no no yes yes yes yes yes yes yes yes yes yes no no yes no yes no yes yes yes yes no no no yes no no no yes yes yes yes yes yes yes yes yes yes yes yes yes Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Note * Not applicable to EMI filters that have no wirebonds. Applies to the following products: SMFLHP Series SMFL Series SMHP Series (O&H only) SMTR Series SSP Series C2-8 SMHF Series SMSA Series SLH Series SLIM Module SFME120 EMI Filter SFME28 EMI Filter SFCS EMI Filter SFMC EMI Filter STF EMI Filter QA SCREENING SPACE PRODUCTS RADIATION HARDNESS LEVELS FOR DC/DC CONVERTERS AND LINE INPUT MODULES1 PRODUCT LEVEL AVAILABILITY RADIATION HARDNESS LEVELS O: Standard, no radiation guarantee For system evaluation, electrically and mechanically comparable to H and K level. L: Radiation hardened – Tested lots Up to 50 k Rads (Si) total dose No SEU guarantee R: Radiation hardened – Tested lots Up to 100 k Rads (Si) total dose SEU guarantee up to 40 MeV L and R are referenced to Assurance (RHA) levels. ENVIRONMENTAL SCREENING LEVELS STANDARD CLASS CLASS (O) H K OO HO Not available Not available HL KL Not available HR KR MIL-PRF-38534, appendix G, Radiation Hardness Note 1. Interpoint’s EMI filters are designed exclusively with passive components providing maximum tolerance for space environment requirements. Applies to the following products: SMFLHP Series (levels O and L only) SMFL Series (levels O and L only) SMTR Series SSP Series SMHF Series SMSA Series SLH Series SLIM Series Modules REPORTS: INCLUDED WITH PURCHASE OF PRODUCT HL, KL, HR, or KR 1.Radiation Susceptibility Analysis 2.Electrical/Thermal Stress Analysis and Derating Report 3.MTBF Report 4.FMEA Report OO option: Select reports available as separate purchases. C2-9