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 (up to 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 • Inhibit primary side and secondary side models VDC Output • Sync In and Sync Out • Indefinite short circuit protection single 5 12 15 28 • High power density, up to 85% efficiency description dual ±5 ±12 ±15 The MHP270 Series™ DC/DC converters provide up to 65 watts of output power over -55°C to +100°C temperature range. MHP270 models operate from a MIL-STD-704 nominal 270-volt DC power bus with 160 to 400 VDC continuous operation with surges to 450 volts. Isolated outputs include 5, 12, 15, and 28 VDC singles and ±5, ±12 and ±15 VDC duals. Parallel operation for all loading conditions is supported without any requirement for external components. The converters are available with standard screening or “ES” screening 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 milliseconds. The units are built as fully hermetic thick film hybrids in our MIL-PRF-38534 certified facilities. 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. Continuous short circuit protection – current limit set at approximately 125%. 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. Remote sense – Sense lines increase the output voltage to compensate for IR drops in traces and wires. The voltage compensation can be up to a maximum of 10% of nominal output voltage to maintain tightly regulated voltage at the load. 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. Output Voltage Options 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 Crane Aerospace & Electronics Electronics Group (Interpoint Brand) PO Box 97005 • Redmond WA 98073-9705 425.882.3100 • [email protected] www.interpoint.com Features Undervoltage lock-out – shuts down when the input line voltage falls below approximately 120 VDC to provide smooth initialization. Soft-start – controlled start-up at turn-on, release from inhibit and recovery from load fault conditions. The MHP270 Series converters are capable of providing other output voltage options in addition to those characterized on this datasheet. Contact your sales representative to discuss other output voltage options, www.interpoint.com/contacts. US Patents Interpoint converters may use one or more of the following US patents 5,521,807, 5,694,303, and 5,631,822. Page 1 of 10 MHP270 Rev G - 20100517 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 (Tc) •-65°C to +150°C Inhibit (INH1, INH2) •In Share (parallel mode) use a common inhibit signal for all converters •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 0.2 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 Screening Table 1 for more information. 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 MHP270 Rev G - 20100517 – + RL Crane Aerospace & Electronics Power Solutions MHP270 Single and Dual DC/DC Converters 270 Volt input – 65 Watt PINS NOT IN USE PIN OUT Pin Single Output Dual Output Inhibit (INH1, INH2) Leave unconnected 2 Input Common Input Common Sync In Connect to input common Inhibit 1 (INH1) Sense Lines Must be connected to appropriate outputs 1 3 4 5 6 7 8 9 10 11 12 Positive Input Inhibit 2 (INH2) 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 MHP270 Rev G - 20100517 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 – Optional fuse 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 INH2 Control Sync In Positive Output Share 12 N/C 11 1 Positive Input 2 Input Common 3 INH2 4 INH1 Pos. Sense 10 Sense Return 9 MHP270 #2 5 Sync Out 6 Sync In Output Common 1 Positive Input 2 Input Common INH1 Control 7 Positive Output 8 7 + – RL Share 12 N/C 11 3 INH2 Pos. Sense 4 MHP270 #N INH1 Sense Return 5 Sync Out Output Common 6 Sync In Positive Output 10 9 8 7 • Dotted lines are optional connections • Sync in should be connected to input common if not used • Synchronizing the converters eliminates beat frequencies during current sharing (parallel operation) • From 2 to 5 converters can be paralleled for up to 276 watts of output power. • These converters are not designed for use in redundant systems • If deviating from this diagram, please consult our applications engineers: [email protected] www.interpoint.com/contacts/technical_support +1.425.895.4016 Figure 3: Parallel (Current Sharing) Connections www.interpoint.com Page 4 of 10 MHP270 Rev G - 20100517 Crane Aerospace & Electronics Power Solutions MHP270 Single and Dual DC/DC Converters 270 Volt input – 65 Watt model numbering key Base Model Input Voltage MHP 270 05 S / ES Output Voltage Number of Outputs (S = single, D = dual) Screening (Standard screening has no designator in this position.) On model selection the lines below, enter one selection from each category to determine the model number. Category Selection / MHP270 Base Model and Input Voltage MHP270 is the only available selection Output Voltage Number of Outputs 1 Screening 2 05, 12, 15, 28 S (STANDARD leave blank) 05, 12, 15 D ES Notes: 1. Number of Outputs: S is a single output and D is a dual output 2. Screening: For standard screening leave the screening option blank. For the ES screening option, insert the ES in the screening level option. For more information see Screening Tables 1. www.interpoint.com Page 5 of 10 MHP270 Rev G - 20100517 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 MHP27005S CONDITIONS OUTPUT VOLTAGE 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, 3 160 270 400 160 270 400 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 2 LINE REGULATION LOAD REGULATION 2 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 4 — — 300 — — 500 µs — — 1000 — — 500 µF CAPACITIVE LOAD 1 NO EFFECT ON DC PERFORMANCE Notes 1. Guaranteed by design, not tested. 2. Load and line transition time > 10 µs 3. Unit will shut down above approximately 425V but will be undamaged and will restart when voltage drops into normal range. www.interpoint.com 4.Recovery time is measured from application of the transient to point the point at which Vout is within 1% of final value. Page 6 of 10 MHP270 Rev G - 20100517 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 MHP27015S CONDITIONS OUTPUT VOLTAGE 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 2 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, 3 160 270 400 160 270 400 VDC — — 450 — — 450 V LOAD REGULATION INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT 2 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 4 — — 300 — — 1000 µs — — 500 — — 500 µF CAPACITIVE LOAD 1 NO EFFECT ON DC PERFORMANCE Notes 1. Guaranteed by design, not tested. 2. Load and line transition time > 10 µs 3. Unit will shut down above approximately 425V but will be undamaged and will restart when voltage drops into normal range. www.interpoint.com 4.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 MHP270 Rev G - 20100517 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 2 PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT 3 Vin = 160 to 400 VDC OUTPUT POWER 3 Vin = 160 to 400 VDC OUTPUT RIPPLE ±VOUT LINE REGULATION 4 ±VOUT LOAD REGULATION 4, 5 ±VOUT CROSS REGULATION 6 MHP27005D MHP27012D MHP28015D UNITS 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 Each Output — ±5 8.0 1 — ±2.5 4.0 1 — ±2.16 3.46 1 Total — — 10 — — 5 — — 4.33 Each Output — — 40 1 — — 48 1 — — 52 1 Total — — 50 — — 60 — — 65 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 ON –VOUT VDC A W mV p-p mV mV INPUT VOLTAGE CONTINUOUS TRANSIENT 50 msec.1, 7 160 270 400 160 270 400 160 270 400 VDC 0 — 450 0 — 450 0 — 450 V NO LOAD — — 20 — — 20 — — 20 INPUT CURRENT 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 STEP LOAD RESPONSE ±VOUT 50% - 100% - 50% 8 TRANSIENT — — 300 — — 900 — — 900 CAPACITIVE LOAD 1 — — 300 — — 500 — — 500 µs NO EFFECT ON DC — — — — — 500 — — 500 µF INPUT RIPPLE CURRENT RECOVERY 9 PERFORMANCE Notes 1. Guaranteed by design, not tested. 2. Share operation not characterized for dual outputs. 3.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. 4. Load and line transition time > 10 µs 5. Assumes balanced loads on the outputs. www.interpoint.com mA mA p-p mV pk 6. Effect on the negative output from 50%/50% loads to 70%/30% or 30%/70% loads. 7.Unit will shut down above approximately 425V but will be undamaged and will restart when voltage drops into normal range. 8.Second output at 50% 9.Recovery time is measured from application of the transient to point at which Vout is within 1% of final value. Page 8 of 10 MHP270 Rev G - 20100517 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 *Does not require designator in Case Option position of model number. 1.505 (38.23) max. 11 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 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/Gold, compression glass seal Seal Hole: 0.100 ±0.002 (2.54 ±0.05) Case U, Rev F, 20100503 Figure 4: Case U www.interpoint.com Page 9 of 10 MHP270 Rev G - 20100517 0.220 (5.59 2 0.850 (21.59) 0.050 (1.27) 0.000 1.050 (26.67) 0.040 dia (1.02) 12 2.750 (69.85) 1 0.120 (3.05) 0.250 (6.35) 1.250 (31.75) 2.880 (73.15) 3.005 (76.33) max. 1.380 (35.05) Seam Seal 0.128 dia (3.25). 0.23 (5.8) Pin Length 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 STANDARD AND /ES (NON-QML) PRODUCTS ENVIRONMENTAL SCREENING 1 standard nOn-Qml2 /es nOn-Qml2 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 3 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. refers to products that do not offer QMl screening. 2. Standard and /ES, non-QML products, do not meet all of the requirements of MIL-PRF-38534. 3. Burn-in designed to bring the case temperature to the maximum case temperature of the product. Refer to the specific product information for the maximum case temperature. Screening Table 1: Environmental Screening MHP270 Single and Dual, MHP270 Rev G - 20100517. 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 - 2010 Interpoint Corporation. All rights reserved. www.interpoint.com Page 10 of 10