Crane Aerospace & Electronics Power Solutions MFX Single Output DC-DC Converters 16 to 50 Volts Input - 50 Watt Features • 90% typical efficiency • Wide input range, 16 to 50 volts • Transient protection up to 80 volts per MIL-STD-704A • Fully isolated, magnetic feedback • -55°C to +125°C operation • Undervoltage lockout • Inhibit function models Output Voltage (V) SINGLE 3.3 5 description The Interpoint® MFX Series™ of high efficiency dc-dc converters offers a wide input voltage range of 16 to 50 volts and up to 50 watts of output power. The units are capable of withstanding short term transients up to 80 volts per MIL-STD-704A. The package is a hermetically sealed, welded metal case. Flanged and non-flanged models are available. Converter Design The MFX converters are switching regulators that use an active-clamp, single-ended forward converter and synchronous rectification design with a constant switching frequency of 500 kHz, typical. Isolation between input and output circuits is provided with transformers in the forward path and in the feedback control loop. Higher Power Density The MFX Series offers a new standard of performance for small size and high power density. At just 0.426 inches high and a total footprint of 2.34 in2, this low profile package offers a total power density of approximately 50 watts per cubic inch. Low Noise The MFX converters current mode control system provides excellent dynamic response and noise rejection. Output voltage response for a 50% to 100% step load transient is as low as 5% with a 350 µs, or less, recovery time. Crane Aerospace & Electronics Power Solutions – Interpoint Products 10301 Willows Rd. NE, Redmond, WA 98052 +1 425-882-3100 • [email protected] www.craneae.com/interpoint Inhibit Function MFX 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 an active low (≤0.8 V – output disabled) is applied to the inhibit pin. The unit is enabled when the pin, which is internally connected to a pull-up current source, is left unconnected or is connected to an open-collector. The open circuit voltage associated with the inhibit pin is 14 to 18 volts. The inhibit pin may sink up to 4 mA maximum when driven to an active low condition. See Table 6 on page 6 for more information. Short Circuit Protection MFX Series converters provide short circuit protection by restricting the output current to approximately 125% of the full load output current. Undervoltage Lockout Undervoltage lockout with hysteresis prevents the units from operating below approximately 15 volts input voltage to keep system current levels smooth, especially during initialization or re-start operations. Page 1 of 11 MFX Rev AB - 2015.07.23 Crane Aerospace & Electronics Power Solutions MFX Single Output DC-DC Converters 16 to 50 Volts Input Watt 28 Volt input – 2550 Watt Positive Input Positive Output Gate Drive Gate Drive Output Common Input Common Inhibit Undervoltage Lockout Current Transformer PWM Controller Voltage and Current Control Primary VCC Trim Sense Return Magnetic Feedback Secondary VCC Figure 1: MFX Single Block Diagram www.craneae.com/interpoint Positive Sense Page 2 of 11 MFX Rev AB - 2015.07.23 Crane Aerospace & Electronics Power Solutions MFX Single Output DC-DC Converters 16 to 50 Volts Input Watt 28 Volt input – 2550 Watt Remote sensE MFX SINGLE OUTPUT CONVERTER 10 Output Common Sense Return Positive Input Positive Sense 11 Positive Output Input Common 3, 4 9 7 A RL A 5, 6 REMOTE SENSE CONNECTION A Make connections at load. Figure 2: Remote Sense Connection 1 CAUTION: The converter will be permanently damaged if the positive sense (pin 7) is shorted to ground. Damage may also result if the output common or positive output is disconnected from the load when the remote sense leads are connected to the load. TRIM RT 8 Trim Positive Sense 7 Trim Down MFX Sense Return 9 Trim Up Figure 3: Trim Connection Table 1: Trim Formulas Function Trim Down 3 25° C, Vo = desired output voltage 1, Rt = trim resistor (kΩ) Nominal Vout Trim Range Formula 2 3.3 Trim Up 4 Trim Down 3 Trim Up 4 5 3.3 to 3.0 2.982 – Vo R = 31.1 T Vo – 3.311 3.3 to 3.9 3.996 – Vo R = 23.2 T Vo – 3.311 5.0 to 4.5 4.409 – Vo R = 90.2 T Vo – 5.015 5.0 to 5.5 RT = 72 5.522 – Vo Vo – 5.015 1. The output voltage may vary by ±5% of the calculated value. 2. If the calculated value is negative, the desired output voltage is outside the allowed trim range. 3. When trimming down do not exceed the maximum current. 4. When trimming up do not exceed the maximum power. www.craneae.com/interpoint Page 3 of 11 MFX Rev AB - 2015.07.23 Crane Aerospace & Electronics Power Solutions MFX Single Output DC-DC Converters 16 to 50 Volts Input Watt 28 Volt input – 2550 Watt Pin Out Inhibit Pin Single Output 1 No connection 2 Case Ground 3 Output Common 4 Output Common 5 Positive Output 6 Positive Output 7 Positive Sense 8 Trim 9 Sense Return 10 Positive Input 11 Input Common 12 Inhibit Leave unconnected Positive Sense Connect to Positive Output Trim Leave unconnected Sense Return Connect to Output Common Table 3: Pins Not in Use Table 2: Pin Out Dot on top of case indicates pin one. 1 2 3 4 5 6 8 7 BOTTOM VIEW MFX 12 11 10 9 Dotted line outlines flanged package option. See Figure 6 on page 8 and Figure 7 on page 9 for dimensions. Figure 4: MFX Single Pin Out www.craneae.com/interpoint Pins not in Use Page 4 of 11 MFX Rev AB - 2015.07.23 Crane Aerospace & Electronics Power Solutions MFX Single Output DC-DC Converters 16 to 50 Volts Input Watt 28 Volt input – 2550 Watt SMD Numbers model numbering key Base Model Input Voltage MFX 28 05 S F / 883 Output Voltage (R = decimal point, 3R3 = 3.3 Vout) Standard Microcircuit Drawing (SMD) MFX Similar Part 5962-1520401HXC in process MFX283R3S/883 5962-1520402HXC in process MFX2805S/883 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. For exact specifications for an SMD product, refer to the SMD drawing. SMDs can be downloaded from: http://www.landandmaritime.dla.mil/programs/smcr Number of Outputs (S = single) Case Option (Non-flanged case has no designator in this position) Table 4: SMD Number Cross Reference Screening (Standard screening has no designator in this position.) Figure 5: Model Numbering Key To Category Base Model and Input Voltage Options MFX28 Fill in for Model # MFX28 model Number Options determine the model number enter one option from each category in the form below. Output Voltage 1 Number of Outputs 2 Case Options 3 Screening 4 3R3, 05 S (non-flanged, leave blank) (standard, leave blank) F (flanged) ES 883 / Notes 1. Output Voltage: An R indicates a decimal point. 3R3 is 3.3 volts out. 2. Number of Outputs: S is a single output. 3. Case Options: For the standard case, Figure 6 on page 8, leave the case option blank. For the flanged case option, Figure 7 on page 9, insert the letter F in the Case Option position 4. Screening: For standard screening leave the screening option blank. For other screening options, insert the desired screening level. For more information see Table 8 on page 10 and Table 9 on page 11. Table 5: Model Number Options www.craneae.com/interpoint Page 5 of 11 MFX Rev AB - 2015.07.23 Crane Aerospace & Electronics Power Solutions MFX Single Output DC-DC Converters 16 to 50 Volts Input Watt 28 Volt input – 2550 Watt Table 6: Operating Conditions, All Models, 25°C case, 28 Vin, 100% load, unless otherwise specified. MFX Series All Models PARAMETER CONDITIONS Lead Soldering Temperature 1 10 seconds max. STORAGE TEMPERATURE 1 CASE OPERATING FULL POWER TEMPERATURE ABSOLUTE DERATING OUTPUT POWER/CURRENT 1 LINEARLY ESD RATING 1 1 MIN TYP — — 300 °C — +150 °C -55 — +125 -55 — +135 pin to case except case pin Undervoltage lockout -55°C to +125°C CURRENT LIMIT 250 - 499 100 — — Rising VIN (Turn on) Falling VIN (Turn oFF) 13.3 15.3 15.9 13.3 14.3 15.6 — 125 — % 455 500 545 kHz — — 0.8 V — 4 mA FREE RUN -55° TO +125°C INHIBIT ACTIVE LOW (OUTPUT DISABLED) Do not apply a voltage to the inhibit pin 3 inhibit pin pulled low 2 INHIBIT PIN SOURCE Current 1 — REFERENCED TO INHIBIT ACTIVE HIGH (OUTPUT ENABLED) Megohms V INPUT COMMON INHIBIT PIN CONDITION EXTERNAL OPEN COLLECTOR OR Do not apply a voltage to the inhibit pin 3 LEAVE UNCONNECTED OPEN CIRCUIT PIN VOLTAGE 1 14 16 For mean time between failures (MTBF) contact Applications Engineering [email protected] +1 425-882-3100 option 7 Notes: 1. Guaranteed by characterization test and/or analysis. Not a production test. 2. Tested with inhibit pin pulled to ground through a diode. 3. An external inhibit interface should be used to pull the inhibit low or leave it floating. The inhibit pin can be left unconnected if not used. www.craneae.com/interpoint V 500 VDC at 25°C % OF FULL LOAD CONVERSION FREQUENCY °C From 100% at 125°C to 0% at 135°C Class 1A ISOLATION: input to output or any UNITS -65 MIL-STD-883 Method 3015 MIL-PRF-38534, 3.9.5.8.2 MAX Page 6 of 11 MFX Rev AB - 2015.07.23 18 V Crane Aerospace & Electronics Power Solutions MFX Single Output DC-DC Converters 16 to 50 Volts Input Watt 28 Volt input – 2550 Watt Table 7: Electrical Characteristics -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified. single output models MFX283R3S PARAMETER CONDITIONS OUTPUT VOLTAGE TC = 25°C OUTPUT CURRENT OUTPUT POWER OUTPUT RIPPLE 20 Hz - 10 MHz LINE REGULATION MIN TYP MFX2805S MAX MIN TYP MAX 3.26 3.30 3.34 4.95 5.00 5.05 3.20 3.30 3.40 4.85 5.00 5.15 VIN = 16 TO 50 V TC = -55°C TO +125°C Units V — — 15.15 — — 10 A VIN = 16 TO 50 V — — 50 — — 50 W TC = 25°C — 50 100 — 50 100 TC = -55°C TO +125°C — 50 100 — 50 100 mV p-p VIN = 16 TO 50 — 1 15 — 1 15 mV LOAD REGULATION NO LOAD TO FULL — 2 30 — 2 30 mV INPUT VOLTAGE CONTINUOUS 16 28 50 16 28 50 V NO LOAD TO FULL TRANSIENT 1, 2 — — 80 — — 80 V INPUT CURRENT NO LOAD — 60 140 — 75 140 mA INHIBITED — 3 6 — 3 6 INPUT RIPPLE CURRENT 20 Hz - 10 MHz — 50 150 — 50 150 EFFICIENCY TC = 25°C 85 89 — 87 91 — TC = -55°C TO +125°C 84 88 — 85 89 — LOAD FAULT 3 POWER DISSIPATION — 9 16 — 6 16 SHORT CIRCUIT RECOVERY 1 — 13 20 — 13 20 ms STEP LOAD RESPONSE 3 TRANSIENT — 120 300 — 70 250 mV pk 50% - 100% - 50% RECOVERY — 150 300 — 190 350 us STEP LINE Response 1, 3 TRANSIENT — 50 265 — 80 300 mV pk 16 - 50 -16 V RECOVERY — 130 350 — 180 350 µs START-UP 3, 4 DELAY — 17 25 — 17 25 ms FULL LOAD OVERSHOOT 1 — 0 30 — 0 50 mV pk CAPACITIVE LOAD NO EFFECT ON DC TC = 25°C PERFORMANCE — — 3000 — — 3000 uF Notes 1. Guaranteed by characterization test and/or analysis. Not a production test. 2. Up to 80 volt transient per MIL-STD-704 A. www.craneae.com/interpoint mA p-p % W 3. Recovery and startup times are measured from application of the transient or change in condition to the point at which VOUT is within 1% of final value. 4. Tested on release from inhibit. Page 7 of 11 MFX Rev AB - 2015.07.23 Crane Aerospace & Electronics Power Solutions MFX Single Output DC-DC Converters 16 to 50 Volts Input - 50 Watt BOTTOM VIEW MFX Seam Seal Dot on top of case indicates pin one. 1.115 max. (28.32) 0.955 (24.26) 12 11 10 0.595 (15.11) 0.795 (20.19) 0.155 (3.94) 2 0.195 (4.95) 1 0.040 dia ±0.002 (1.02 ±0.05) 3 4 9 5 6 8 7 1.895 (48.13) 2.095 max. (53.21) 1.695 (43.05) 1.495 (37.97) 1.295 (32.89) 0.995 (25.27) 1.095 (27.81) 0.000 0.24 (6.1) 0.000 0.426 max. (10.82) 0.000 Weight: 52 grams maximum 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 Cover Kovar/Nickel Pins #52 alloy/Gold glass compression seal Gold plating of 50 - 150 microinches included in pin diameter Seal hole 0.092 ±0.002 (3.05 ± 0.05) Case H7 MFX S, Rev A 2015.04.21 Please refer to the numerical dimensions for accuracy. Figure 6: MFX www.craneae.com/interpoint Page 8 of 11 MFX Rev AB - 2015.07.23 Crane Aerospace & Electronics Power Solutions MFX Single Output DC-DC Converters 16 to 50 Volts Input - 50 Watt BOTTOM VIEW MFX FLANGED Flanged cases: Designator "F" required in Case Option position of model number Seam Seal Dot on top of case indicates pin one. 2 x Dia 0.128 ±0.002 (3.25 ±0.05) 2 x R 0.163 (4.14) 1.115 max. (28.32) 11 10 9 0.995 (25.27) 1.095 (27.81) 3 4 5 6 8 7 1.895 (48.13) 12 0.595 (15.11) 0.155 (3.94) 0.795 (20.19) 0.330 (8.38) 2 0.195 (4.95) 1 1.695 (43.05) 0.955 (24.26) 0.040 dia ±0.002 (1.02 ±0.05) 0.780 (19.81) (2.762 max. (70.15)) top of header Flange thickness: 0.060 (1.52) Base Plate Detail, Edge View Weight: 52 grams maximum 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 Cover Kovar/Nickel Pins #52 alloy/Gold glass compression seal Gold plating of 50 - 150 microinches included in pin diameter Seal hole 0.092 ±0.002 (3.05 ± 0.05) Case J7 MFX S, Rev A 2015.04.21 Please refer to the numerical dimensions for accuracy. Figure 7: MFX Flanged www.craneae.com/interpoint Page 9 of 11 MFX Rev AB - 2015.07.23 2.253 (57.72) 2.090.(53.08) 1.495 (37.97) 1.295 (32.89) 0.000 0.163 (4.14) 0.24 (6.1) 0.000 0.426 max. (10.82) 0.000 Crane Aerospace & Electronics Power Solutions Crane Aerospace & Electronics Power Solutions QualityAssuranceandCertification MFX Single Output DC-DC Converters AppLICATIonnoTe 16 to 50 Volts Input Watt 28 Volt input – 2550 Watt Table is for reference only. See individual Series' datasheets for specific screening. eleMent eValuatiOn 1 high reliability /883 (claSS h) QMl claSS h /883 M/S 2 p3 Element Electrical n n Visual n n Internal Visual n Final Electrical n n Wire Bond Evaluation n n cOMpOnent-leVel teSt perFOrMed Notes 1. Element evaluation does not apply to standard and /ES product. 2. M/s = Active components (microcircuit and semiconductor die). 3. P = Passive components, Class H element evaluation. Not applicable to standard and /ES element evaluation. 8: Element Evaluation tabLe 8: eLeMent evaLuation HigHTable reLiabiLity DC-DC Converters anD eMi FiLters /883 (CLass H) www.craneae.com/interpoint www.craneae.com/interpoint Page 10 of 14 10 of 11 APP-009Page Rev AE - 2015.07.21 MFX Rev AB - 2015.07.23 Crane Aerospace & Electronics Power Solutions Crane Aerospace & Electronics Power Solutions QualityAssuranceandCertification MFX Single Output DC-DC Converters AppLICATIonnoTe 16 to 50 Volts Input 50 Watt Table is for reference only. See individual Series' datasheets for specific screening. enVirOnMental Screening high reliability Standard, /eS and /883 (claSS h) nOn-QMl 1 teSt perFOrMed pre-capInspection,Method2017,2032 QMl 2 Standard /eS claSS h /883 n n n TemperatureCycle(10times) Method 1010, Cond. C, -65°C to +150°C, ambient n Method 1010, Cond. B, -55°C to +125°C, ambient n ConstantAcceleration Method 2001, 3000 g n Method 2001, 500 g n n3 pInD,TestMethod2020,Cond.A burn-inMethod1015,+125°Ccase,typical4 96 hours n 160 hours n FinalelectricalTest,MIL-pRF-38534,groupA, Subgroups 1 through 6, -55°C, +25°C, +125°C case Subgroups 1 and 4, +25°C case n n n HermeticityTest Gross Leak, Cond. C1, fluorocarbon Fine Leak, Cond. A2, helium Gross Leak, Dip n n n n n n n Finalvisualinspection,Method2009 n Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes 1. standard and es are non-QMl products and may not meet all of the requirements of MIl-PRF-38534. 2. All processes are QMl qualified and performed by certified operators. 3. Not required by DLA but performed to assure product quality. 4. Burn-in temperature designed to bring the case temperature to +125°C minimum. Burn-in is a powered test. Table 9:DC-DC Environmental Screening tabLe 9: environMentaL sCreening HigH reLiabiLity Converters anD eMi FiLters stanDarD, /es anD /883 (CLass H) Page 11 of 14 APP-009 Rev AEAll- technical 2015.07.21 MFX Single, MFX Rev AB - 2015.07.23. This revision supersedes all previous releases. information is believed to be accurate, but www.craneae.com/interpoint no responsibility is assumed for errors or omissions. Interpoint is a registered trademark of Crane Co. and MFX Series is a trademark of Crane Electronics, Inc. Copyright © 1999 - 2015 Crane Electronics, Inc. All rights reserved. www.craneae.com/interpoint Page 11 of 11