FEATURES • • • • • • • • • • • • • –55° to +100°C operation 160 to 400 VDC input Fully isolated Magnetic feedback Fixed frequency, 600 kHz typical Topology – Two Switch, Single Ended Forward 450 V / 50 ms transient protection Inhibit input side and output side Sync in and out Indefinite short circuit protection Remote sense on single models Up to 85% efficiency Parallelable: up to 5 converters DC/DC CONVERTERS 270 VOLT INPUT MHP270 SERIES 65 WATT MODELS VDC OUTPUT SINGLE 5 12 15 28 DUAL ±5 ±12 ±15 Size (max.): 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm) See “Case U Maximum Dimensions” and “Case U.” Weight: 86 grams maximum Screening: MHP270 Standard or MHP270 ES. See “QA Screening: MHP270” for more information 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. MHP 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 MILSTD-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 Interpoint’s MILSTD-1772 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. The MHP270 Series offer a complete list of standard features which include: Up to five single output MHP 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 85% current sharing accuracy over all loading conditions. Continuous short circuit protection – current limit set at approximately 125%. MHP 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. MHP converters have a nominal switching frequency of 600 kHz, but may be synchronized at any frequency from 525 to 675 kHz. 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. Remote sense – to provide automatic compensation for voltage drops on output lines on single output models. 1 DC/DC CONVERTERS MHP270 SERIES 65 WATT ABSOLUTE MAXIMUM RATINGS Input Voltage • 160 to 400 VDC 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 RECOMMENDED OPERATING CONDITIONS Input Voltage Range • 160 to 400 VDC continuous • 450 VDC for 50 msec transient Case Operating Temperature (Tc) • –55 to +100°C full power SYNC AND INHIBIT (INH1, INH2) TYPICAL CHARACTERISTICS Sync In (525 to 675 kHz) • Duty cycle 40% min, 60% max • Logic low 0.8 V max • Logic high 4.5 V min • If not used, connect to input common • Referenced to input common Sync Out - Referenced to input common Inhibit (INH1, INH2) TTL Open Collector • Logic low (output disabled) INH1 referenced to input common Logic low 0.8 V max INH2 referenced to output common Logic low 0.5 V max • Logic high (output enabled) Open collector Output Voltage Temperature Coefficient • 100 ppm/°C typical Isolation • 100 megohm minimum at 500 V Conversion Frequency • Free run mode 600 kHz typical 525 kHz. min., 675 kHz max • External sync range: 525 to 675 kHz Inhibit Pin Voltage (unit enabled) • INH1 =12 V typ., INH2 = 5 V typ Low Line Drop Out - Vout drops 50 mv • Input voltage 155 VDC max Undervoltage Lockout • Input voltage 110 VDC min Current Limit • 125% of full load typical PINS NOT IN USE Inhibit (INH1, INH2) Sync Out Sync In Share Sense Lines No connection No connection Connect to input common Connect to output common Must be connected to appropriate outputs Electrical Characteristics: 25°C Tc, 270 VDC Vin, 100% load, free run, unless otherwise specified. SINGLE OUTPUT MODELS MHP27005S MIN 4.95 TYP MAX 5.00 5.05 MHP27012S MHP27015S MHP27028S MIN TYP MAX 11.88 12.00 12.12 MIN TYP MAX 14.85 15.00 15.15 MIN TYP MAX 27.22 28.00 28.28 PARAMETER OUTPUT VOLTAGE CONDITION UNITS VDC OUTPUT CURRENT VIN = 160 TO 400 VDC 0 — 10 0 — 5 0 — 4.33 0 — 2.32 A OUTPUT POWER VIN = 160 TO 400 VDC 0 — 50 0 — 60 0 — 65 0 — 65 W VOLTAGE LINE REGULATION 10 kHz - 2 MHz VIN = 160 TO 400 VDC — — — — 50 50 — — — — 50 120 — — — — 75 150 — — — — 280 280 mV p-p mV LOAD REGULATION INPUT VOLTAGE NO LOAD TO FULL CONTINUOUS TRANSIENT1 50 ms — 160 — — 270 — 50 400 450 — 160 — — 270 — 120 400 450 — 160 — — 270 — 150 400 450 — 160 — — 270 — 280 400 450 mV VDC V OUTPUT RIPPLE INPUT CURRENT INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT2 STEP LOAD RESP. NO LOAD — — 20 — — 20 — — 20 — — 20 mA INHIBITED - INH1 INHIBITED - INH2 — — — — 8 15 — — — — 10 15 — — — — 7 15 — — — — 10 15 mA 10 kHz - 10 MHz — 76 — — 50 — — 81 — — 50 — — 80 — — 45 — — 80 — — 50 — mA p-p % POWER DISSIPATION SHORT CIRCUIT — — 19 — — 19 — — 19 — — 23 W VOUT — — 1.5 — — 1.5 — — 1.0 — — 1.0 VDC — — — — 300 300 — — — — 700 500 — — — — 700 300 — — — — 1800 1000 mV pk µs 50% – 100% – 50% TRANSIENT RECOVERY3 Notes 1. Unit will shut down above approximately 425V but will be undamaged and will restart when voltage drops into normal range. 2. Indefinite short circuit protection not guaranteed above 100°C case. 2 3. Recovery time is measured from application of the transient to point at which Vout is within 1% of final value. MHP270 SERIES 65 WATT DC/DC CONVERTERS Electrical Characteristics: 25°C Tc, 270 VDC Vin, 100% load, free run, unless otherwise specified. DUAL OUTPUT MODELS1 PARAMETER OUTPUT VOLTAGE MHP27005D MIN TYP MAX 4.95 5.00 5.05 4.95 5.00 5.05 CONDITIONS +VOUT –VOUT MHP27012D MIN TYP MAX 11.88 12.00 12.12 11.88 12.00 12.12 MHP27015D MIN TYP MAX 14.85 15.00 15.15 14.85 15.00 15.15 UNITS VDC OUTPUT CURRENT2 VIN = 160 TO 400 VDC 0 ±5 8.0 0 ±2.5 4.0 0 ±2.16 3.46 A OUTPUT POWER2 VIN = 160 TO 400 VDC 0 — 50 0 — 60 0 — 65 W — 50 100 — 50 125 — 50 125 mV p-p — — 100 — — 120 — — 150 mV mV OUTPUT RIPPLE 10 kHz - 2 MHz VOLTAGE ± VOUT LINE REGULATION VIN = 160 TO 400 VDC ± VOUT LOAD REGULATION3 NO LOAD TO FULL — — 100 — — 120 — — 150 CROSS REGULATION4 EFFECT ON –VOUT — — 1000 — — 800 — — 750 mV CONTINUOUS 160 270 400 160 270 400 160 270 400 VDC TRANSIENT5 50 ms NO LOAD INHIBITED - INH1 INHIBITED - INH2 0 — — — — — — — 450 20 10 15 0 — — — — — — — 450 20 10 15 0 — — — — — — — 450 20 8 15 V mA 10 kHz - 10 MHz BALANCED LOAD POWER DISSIPATION SHORT CIRCUIT VOUT — 74 — — 45 — — 81 — — 45 — — 82 — — 45 — mA p-p % — — — — 8 ±2.0 — — — — 7.5 ±1.0 — — — — 19 ±1.5 W V 50 %–100% LOAD7 TRANSIENT — — 300 — — 900 — — 900 mV pk RECOVERY8 — — 500 — — 500 — — 500 µs ± VOUT INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT6 STEP LOAD RESPONSE ± VOUT Notes 1. Share operation not characterized for dual outputs. 2. Up to 80% of the total output power (current) is available from either output providing the opposite output is carrying 20% of the power (current) in use. 3. Assumes balanced loads on the outputs. 4. Effect on the negative output from 50%/50% loads to 70%/30% or 70%/30% loads. mA 5. Unit will shut down above approximately 425V but will be undamaged and will restart when voltage drops into normal range. 6. Indefinite short circuit protection not guaranteed above 125°C case. 7. Second output at 50% 8. Recovery time is measured from application of the transient to point at which Vout is within 1% of final value. SINGLE OUTPUT MODELS CONNECTION DIAGRAM - SENSE 270 V Inhibit + – 1 Positive Input 2 Input Common 3 INH2 4 INH1 5 Sync In 6 Sync Out Sync In Share 12 N/C 11 Pos. Sense 10 9 Sense Return Output Common Positive Output – 8 7 + RL REMOTE SENSE CONNECTION FIGURE 1: SENSE CONNECTIONS 3 DC/DC CONVERTERS MHP270 SERIES 65 WATT SINGLE OUTPUT MODELS CONNECTION DIAGRAM - PARALLEL + 270V – 1 Positive Input 2 Input Common 3 INH2 4 INH1 5 Sync Out 6 Share 12 N/C 11 Pos. Sense 10 Sense Return 9 8 Output Common 7 Positive Output MHP270 #1 Sync In MODEL NUMBERING KEY + RL – 1 Positive Input 2 Input Common 3 INH2 INH1 5 Sync Out Output Common Sync In Positive Output 1 Positive Input 2 Input Common MHP 270 05 S / ES Base Model Input Voltage Output Voltage Pos. Sense 10 Sense Return 9 MHP270 #2 4 6 Share 12 N/C 11 Number of Outputs (S = single, D = dual) 8 Screening (Standard screening has no designator in this position.) 7 Share 12 N/C 11 3 INH2 4 MHP270 INH1 5 Sync Out 6 Sync In #N Pos. Sense 10 9 Sense Return Output Common Positive Output 8 7 FIGURE 2: PARALLEL CONNECTIONS PIN OUT Pin 1 2 3 4 5 6 7 8 9 10 11 12 Single Output Positive Input Input Common Inhibit 2 (INH2) Inhibit 1 (INH1) Sync Out Sync In Positive Output Output Common Sense Return Positive Sense No connection Share Dual Output Positive Input Input Common Inhibit 2 (INH2) Inhibit 1 (INH1) Sync Out Sync In Positive Output Output Common Negative Output No connection No connection Share Angled corner indicates pin one. 12 1 11 2 3 4 5 6 TOP VIEW MHP (Pin side, marked side) See “Case U Maximum Dimensions” and “Case U” FIGURE 3: PIN OUT 4 MHP270 Rev D 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. MHP270 Series is a trademark of Interpoint. Copyright © 1994 - 2005 Interpoint Corporation. All rights reserved. 10 9 8 7 CASES CASE U MAXIMUM DIMENSIONS TOP VIEW (PIN SIDE) Angled corner indicates pin one 1.505 max (38.23) See Case U for pin configuration 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 Case U maximum dimensions, Rev B, September 27 2005 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 © 1999-2005 Interpoint Corp. All rights reserved. 5 CASES TOP VIEW CASE U MOR Series, MFL Series, MHP Series, MFLHP Series, FMTR Series. SMFL Series, SMFLHP Series, SMHP Series, FME EMI Filter, FMD270 EMI Filter, SFCS EMI Filter, SFME EMI Filter, HUM70 Module, and LCM Module 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 Seal hole: 0.100 ±0.002 (2.54 ±0.05) 0.220 (5.59 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 Case U, Rev B, September 27, 2005 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 © 1999-2005 Interpoint Corp. All rights reserved. 6 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 QA SCREENING: MHP270 (STANDARD & ES) MHP270 SCREENING (STANDARD & ES) TEST MHP270 STANDARD MHP270 /ES 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 96 hours at 100°C case, typical 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 methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. MHP270 Screening Standard & ES page 1 of 1 QA Screening MHP270 Standard & ES Rev B September 2005. 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. Copyright © 2005 Interpoint Corporation. All rights reserved. 7