Crane Aerospace & Electronics Power Solutions MHP270 Single and Dual DC/DC Converters 270 Volt input – 65 Watt Features Parallel operation with current share, up to 5 units (276 watts) • Operating range -55° to +100°C • Input voltage 160 to 400 VDC • Transient protection 450 V for 50 ms • Fully isolated, magnetic feedback • Fixed high frequency switching • Remote sense on single models models • Inhibit primary side and secondary side VDC Output • Sync In and Sync Out single • Indefinite short circuit protection 5 12 15 28 • High power density, up to 85% efficiency description The MHP270 Series™ DC/DC converters provide up to 65 watts of output power over the full –55°C to 100°C temperature range. MHP270 models operate from a MIL-STD-704 nominal 270-volt DC power bus – from 160 to 400 VDC continuous operation with surges to 450 volts – 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. The converters are available with standard screening or “ES” screening MHP270 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. Up to five single output MHP270 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 an 85% current sharing accuracy over 35% load to full load conditions. MHP270 Series of converters feature a flexible synchronization scheme in which units may be synchronized to an external clock or to one another by using sync in and sync out pins provided on each unit. MHP270 converters have a nominal switching frequency of 525 kHz, but may be synchronized at any frequency from 475 to 575 kHz. Crane Aerospace & Electronics Electronics Group (Interpoint Brand) PO Box 97005 • Redmond WA 98073-9705 425.882.3100 • [email protected] www.interpoint.com dual ±5 ±12 ±15 MHP270 converters meet a wide variety of military/aerospace performance and environmental specifications. Their continuous operation input voltage (160 to 400) meets the normal operating limits of MIL-STD-704. The unit shuts down above approximately 425 volts, but it is rated to withstand a surge of up to 450 volts for 50 msec. The units are built as fully hermetic thick film hybrids in our MIL-PRF-38534 certified facilities. Features Undervoltage lock-out – shuts down when the input line voltage falls below approximately 120 VDC to provide smooth initialization. Continuous short circuit protection – current limit set at approximately 125%. Soft-start – controlled start-up at turn-on, release from inhibit and recovery from load fault conditions. Remote sense – to provide automatic compensation for voltage drops on output lines on single output models. VDC Page 1 of 10 Rev F - 20090304 Crane Aerospace & Electronics Power Solutions MHP270 Single and Dual DC/DC Converters 270 Volt input – 65 Watt Operating Conditions and characteristics Sync and inhibit Input Voltage Range •160 to 400 VDC continuous •450 VDC for 50 msec transient Sync •Sync In ‣‣Input frequency 475 to 575 kHz. ‣‣Duty cycle 40% min, 60% max ‣‣Active low 0.8 V max ‣‣Active high 4.5 V min, 10 V max ‣‣Referenced to input common •Sync Out ‣‣Referenced to input common Output Power •50 to 65 watts depending on model Lead Soldering Temperature (10 sec) •300°C Storage Temperature Range (Case) •-65°C to +150°C Inhibit (INH1, INH2) •Active low (output disabled) ‣‣INH1 referenced to input common Active low 0.8 V max Inhibit pin will source 15 mA max ‣‣INH2 referenced to output common Active low 0.5 V max Inhibit pin will source 15 mA max •Active high (output enabled) ‣‣Open collector ‣‣Open pin voltage: INH1 = 12V typ, INH2 = 5 V typ Case Operating Temperature (Tc) •-55 to +100°C full power Output Voltage Temperature Coefficient •100 ppm/°C typical Current Limit •125% of full load typical Isolation •100 megohm minimum at 500 V Conversion Frequency • Free run mode 525 kHz typical ‣‣ 475 kHz. min., 575 kHz max • External sync range: 475 to 575 kHz mechanical and environmental Low Line Drop Out •Vout drops 1% of nominal •Input voltage 155 VDC max Size (maximum) •3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm) •See case U for dimensions. Undervoltage Lockout •Input voltage 110 VDC min Weight (maximum) •86 grams max Screening •Standard or ES. See “MHP270 (Standard and /ES, non-QML Products” screening table for more information, page 10. SINGLE OUTPUT MODELS CONNECTION DIAGRAM - SENSE 270 V Inhibit Sync In + – 1 Positive Input 2 Input Common 3 INH2 4 INH1 5 6 Sync Out Sync In Share 12 N/C 11 Pos. Sense 10 9 Sense Return 8 Output Common 7 Positive Output REMOTE SENSE CONNECTION Figure 1: Sense Connections www.interpoint.com Page 2 of 10 Rev F - 20090304 – + RL Crane Aerospace & Electronics Power Solutions MHP270 Single and Dual DC/DC Converters 270 Volt input – 65 Watt Pin Single Output Dual Output Inhibit (INH1, INH2) Leave unconnected Input Common Input Common Sync In Connect to input common Inhibit 1 (INH1) Sense Lines Must be connected to appropriate outputs 1 Positive Input 3 Inhibit 2 (INH2) 2 4 5 6 7 8 9 10 11 12 PINS NOT IN USE PIN OUT Inhibit 1 (INH1) Sync Out Sync In Positive Output Output Common Sense Return Positive Sense No connection Share Sync Out Positive Input Share Inhibit 2 (INH2) Leave unconnected Sync Out Sync In Positive Output Output Common Negative Output No connection No connection Share Angled corner indicates pin one. 1 12 2 3 4 5 6 11 TOP VIEW MHP (Pin side, marked side) See case U for dimensions. Figure 2: Pin Out www.interpoint.com Page 3 of 10 Rev F - 20090304 Leave unconnected 10 9 8 7 Crane Aerospace & Electronics Power Solutions MHP270 Single and Dual DC/DC Converters 270 Volt input – 65 Watt SINGLE OUTPUT MODELS CONNECTION DIAGRAM - PARALLEL + 270V – Share 12 N/C 11 1 Positive Input 2 Input Common 3 INH2 Pos. Sense 10 Sense Return 9 4 INH1 MHP270 #1 8 5 Sync Out Output Common 6 Sync In Positive Output 1 Positive Input 2 Input Common 3 INH2 4 INH1 MHP270 #2 5 Sync Out 6 Sync In 7 Share 12 N/C 11 Pos. Sense 10 Sense Return 9 Output Common Positive Output 1 Positive Input 2 Input Common 8 7 Share 12 N/C 11 3 INH2 Pos. Sense 4 INH1 MHP270 #N Sense Return 5 Sync Out Output Common 6 Sync In Positive Output 10 9 8 7 Figure 3: Parallel Connections www.interpoint.com Page 4 of 10 Rev F - 20090304 + – RL Crane Aerospace & Electronics Power Solutions MHP270 Single and Dual DC/DC Converters 270 Volt input – 65 Watt model numbering key MHP Base Model Input Voltage 270 05 S / ES Output Voltage Number of Outputs (S = single, D = dual) Screening (Standard screening has no designator in this position.) Model Selection MHP270 Base model Vout value number of outputs / screening Choose one from each of the following rows Vout value singles: 5,12,15, 28 Screening standard screening, leave blank Number of outputs www.interpoint.com S (single) or D (dual) Page 5 of 10 duals: 5,12,15 Rev F - 20090304 /ES (ES screening) Crane Aerospace & Electronics Power Solutions MHP270 Single and Dual DC/DC Converters 270 Volt input – 65 Watt Electrical Characteristics: 25°C Tc, 270 VDC Vin, 100% load, free run, unless otherwise specified. single output models PARAMETER CONDITIONS OUTPUT VOLTAGE MHP27005S mhp27012s MIN TYP MAX MIN TYP MAX 4.95 5.00 5.05 11.88 12.00 12.12 UNITS VDC OUTPUT CURRENT Vin = 160 to 400 VDC 0 — 10 0 — 5 A OUTPUT POWER Vin = 160 to 400 VDC 0 — 50 0 — 60 W 10 kHz - 2 MHz — — 50 — — 50 mV p-p VIN = 160 TO 400 VDC — — 50 — – 120 mV NO LOAD TO FULL — — 50 — — 120 mV CONTINUOUS TRANSIENT 50 msec. 1 160 270 400 160 270 400 VDC — — 450 — — 450 V NO LOAD — — 20 — — 20 INHIBITED–INH1 — — 8 — — 10 INHIBITED–INH2 — — 15 — — 15 10 kHz - 10 MHz — — 50 — — 50 mA p-p OUTPUT RIPPLE LINE REGULATION LOAD REGULATION INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT EFFICIENCY mA 76 — — 81 — — % LOAD FAULT POWER DISSIPATION SHORT CIRCUIT — — 30 — — 35 W STEP LOAD RESPONSE 50% - 100% - 50% TRANSIENT — — 300 — — 700 mV pk RECOVERY 2 — — 300 — — 500 µs Notes 1. Unit will shut down above approximately 425V but will be undamaged and will restart when voltage drops into normal range. www.interpoint.com 2.Recovery time is measured from application of the transient to the point at which Vout is within 1% of final value. Page 6 of 10 Rev F - 20090304 Crane Aerospace & Electronics Power Solutions MHP270 Single and Dual DC/DC Converters 270 Volt input – 65 Watt Electrical Characteristics: 25°C Tc, 270 VDC Vin, 100% load, free run, unless otherwise specified. single output models PARAMETER CONDITIONS OUTPUT VOLTAGE MHP27015S MHP27028S MIN TYP MAX MIN TYP MAX 14.85 15.00 15.15 27.72 28.00 28.28 UNITS VDC OUTPUT CURRENT Vin = 160 to 400 VDC 0 — 4.33 0 — 2.32 A OUTPUT POWER Vin = 160 to 400 VDC 0 — 65 0 — 65 W OUTPUT RIPPLE LINE REGULATION LOAD REGULATION INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT 10 kHz - 2 MHz — — 75 — — 280 mV p-p VIN = 160 TO 400 VDC — — 150 — — 280 mV NO LOAD TO FULL — — 150 — — 280 mV CONTINUOUS TRANSIENT 50 msec. 1 160 270 400 160 270 400 VDC — — 450 — — 450 V NO LOAD — — 20 — — 20 INHIBITED–INH1 — — 7 — — 10 INHIBITED–INH2 — — 15 — — 15 10 kHz - 10 MHz — — 45 — — 70 mA p-p 80 — — 80 — — % EFFICIENCY mA LOAD FAULT POWER DISSIPATION SHORT CIRCUIT — — 45 — — 45 W STEP LOAD RESPONSE 50% - 100% - 50% TRANSIENT — — 700 — — 1800 mV pk RECOVERY 2 — — 300 — — 1000 µs Notes 1. Unit will shut down above approximately 425V but will be undamaged and will restart when voltage drops into normal range. www.interpoint.com 2.Recovery time is measured from application of the transient to point the point at which Vout is within 1% of final value. Page 7 of 10 Rev F - 20090304 Crane Aerospace & Electronics Power Solutions MHP270 Single and Dual DC/DC Converters 270 Volt input – 65 Watt Electrical Characteristics: 25°C Tc, 270 VDC Vin, 100% load, free run, unless otherwise specified. DUAL output models 1 PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT 2 OUTPUT POWER 2 OUTPUT RIPPLE ±VOUT LINE REGULATION ±VOUT LOAD REGULATION 3 ±VOUT CROSS REGULATION 4 INPUT VOLTAGE MHP27005D MHP27012D MHP28015D CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX +Vout 4.95 5.00 5.05 11.88 12.00 12.12 14.85 15.00 15.15 -Vout 4.92 5.00 5.08 11.82 12.00 12.18 14.77 15.00 15.23 Vin = 160 to 400 VDC 0 ±5 8.0 0 ±2.5 4.0 0 ±2.16 3.46 Vin = 160 to 400 VDC 0 — 50 0 — 60 0 — 65 UNITS VDC A W mV p-p 10 kHz - 2 MHz — 50 100 — 50 125 — 50 125 VIN = 160 TO 400 VDC — — 100 — — 120 — — 150 NO LOAD TO FULL — — 100 — — 120 — — 150 EFFECT — — 1000 — — 800 — — 750 mV CONTINUOUS 160 270 400 160 270 400 160 270 400 VDC TRANSIENT 50 msec.4 0 — 450 0 — 450 0 — 450 V ON –VOUT mV mV NO LOAD — — 20 — — 20 — — 20 INHIBITED–INH1 — — 10 — — 10 — — 8 INHIBITED–INH2 — — 15 — — 15 — — 15 10 kHz - 10 MHz — — 60 — — 60 — — 60 EFFICIENCY BALANCED LOAD 74 — — 81 _ — 82 _ — % LOAD FAULT POWER DISSIPATION SHORT CIRCUIT — — 30 — — 35 — — 45 W 50% - 100% - 50% 6 TRANSIENT — — 300 — — 900 — — 900 — — 300 — — 500 — — 500 INPUT CURRENT INPUT RIPPLE CURRENT STEP LOAD RESPONSE ±VOUT RECOVERY 7 Notes 1.Share operation not characterized for dual outputs. 2.Up to 80% of the total output power is available from either output provided that the opposite output is simultaneously carrying 20% of the total output power. One of the outputs must always provide a minimum of 20% of the total output power to meet cross regulation. Negative Vout cross regulation is referenced to 50%/50% balanced loads (at 100% of total rated output power - full load). 3. Assumes balanced loads on the outputs. www.interpoint.com mA mA p-p mV pk 4. Effect on the negative output from 50%/50% loads to 70%/30% or 70%/30% loads. 5.Unit will shut down above approximately 425V but will be undamaged and will restart when voltage drops into normal range. 6.Second output at 50% 7.Recovery time is measured from application of the transient to point at which Vout is within 1% of final value. Page 8 of 10 Rev F - 20090304 µs Crane Aerospace & Electronics Power Solutions MHP270 Single and Dual DC/DC Converter Cases 270 Volt input – 65 Watt TOP VIEW CASE U Flanged case, short-leaded *Case U does not require designator in Case Option position of model number. 0.23 (5.8) Lead Length 1.505 (38.23) max. 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 0.000 0.120 (3.05) 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 0.220 (5.59 2 0.040 dia (1.02) 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 Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins #52 alloy/Nickel/Gold; compression glass seal Case U, Rev C, 20060302 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 © 1999-2006 Interpoint Corp. All rights reserved. Figure 4: Case U www.interpoint.com Page 9 of 10 Rev F - 20090304 0.050 (1.27) 0.000 1.050 (26.67) 2.750 (69.85) 12 0.120 (3.05) 0.250 (6.35) 1.250 (31.75) 1 2.880 (73.15) 3.005 (76.33) max. 1.380 (35.05) Seam Seal 0.128 dia (3.25). 0.400 (10.16) max. Angled corner indicates pin one. Crane Aerospace & Electronics Power Solutions MHP270 Single and Dual DC/DC Converters 270 Volt input – 65 Watt MHP270 (Standard and /ES, non-QML) Products Environmental Screening MHP270 Standard non-QML1 MHP270 /ES non-QML1 Pre-cap Inspection Method 2017, 2032 yes yes Temperature Cycle (10 times) Method 1010, Cond. B, -55°C to 125°C, ambient no yes Constant Acceleration Method 2001, 500 g no yes Burn-in Method 1015, 100°C case, typical 96 hours no yes Final Electrical Test MIL-PRF-38534, Group A Subgroups 1 and 4: +25°C case yes yes Hermeticity Test Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Gross Leak, Dip (1 x 10-3) no no yes yes yes no Final visual inspection Method 2009 yes yes Test Performed Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. Standard and /ES, non-QML products, do not meet all of the requirements of MIL-PRF-38534. MHP270 Single and Dual, Rev F - 20090304. 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 without notice. MHP270 Series is a trademark of Interpoint. Copyright © 1999 - 2009 Interpoint Corporation. All rights reserved. www.interpoint.com Page 10 of 10