Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 16 to 50 volts input – 25 Watt Features • 16 to 50 volt input • Up to 87% efficiency, 42 W/in3 • Undervoltage lockout • -55°C to +125°C operation models • Fully isolated Output Voltage (V) • Magnetic feedback • Fixed frequency, 500 kHz typical • 65 volts for up to 1 sec. transient protection • Inhibit and sync function • Output short circuit protection SINGLE DUAL 1.8 ±5 2.5 ±7 3.3 ±12 5 ±15 5.7 12 15 28 description The Interpoint® MFK Series™ of high frequency dc-dc converters offers a wide input voltage range of 16 to 50 volts and up to 25 watts of output power. The converters are capable of withstanding transients of up to 65 volts for up to one second. The package is a hermetically sealed, welded metal case. Flanged and non-flanged models are available. Converter Design The MFK converters are switching regulators that use a quasisquare wave, single-ended forward converter 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 MFK Series offers a new standard of performance for small size and high power density. At just 0.360 inch high and a total footprint of 1.7 in2, this low profile package offers a total power density of up to 42 watts per cubic inch. Low Noise, High Audio Rejection The MFK converters current mode control system provides excellent dynamic response and noise rejection. Audio rejection is typically 50 dB. Output voltage response for a 50% to 100% step load transient is as low as 4% with a 400 µs recovery time. Inhibit Function MFK 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 the inhibit pin is pulled below 0.8 volts. The converter 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 gate. The open circuit voltage associated with the inhibit pin is 8.5 to 12 V. In the inhibit mode, a maximum of 4 mA must be sunk from the inhibit pin. See Table 5 on page 5 for more information. Synchronization A synchronization feature is included with the MFK Series that allows the user to match the switching frequency of the converter to the frequency of a system clock. Synchronization allows the user to adjust the nominal 500 kHz operating frequency to any frequency within the range of 450 kHz to 550 kHz. This is initiated by applying an active high input of the desired frequency to the sync pin. See Table 5 on page 5 for more information. Short Circuit Protection MFK Series converters provide short circuit protection by restricting the output current to approximately 115% of the full load output current. Undervoltage Lockout Undervoltage lockout with hysteresis prevents the converters from operating below approximately 15 volts input voltage to keep system current levels smooth, especially during initialization or re-start operations. Crane Aerospace & Electronics Power Solutions – Interpoint Products 10301 Willows Rd. NE, Redmond, WA 98052 +1 425-882-3100 • [email protected] www.craneae.com/interpoint Page 1 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Positive Output Positive Input Output Common Input Common Bias Supply Inhibit FET Driver UVLO VIn VS+ Secondary VCC + _ PWM Controller + _ VRef Secondary VCC Sync In Figure 1: MFK Single Block Diagram Positive Output Positive Input Output Common Input Common Bias Supply Inhibit VIn FET Driver UVLO + _ PWM Controller + _ VRef Secondary VCC Sync In Figure 2: MFK Dual Block Diagram www.craneae.com/interpoint Negative Output VS+ Secondary VCC Page 2 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Pin Out Pin Single Output MFK2828S Dual Output 1 Inhibit Inhibit Inhibit 2 Output Common Positive Output Positive Output 3 Positive Output No Connection Output Common 4 Sync In Output Common Negative Output 5 Case Ground Sync In Sync In 6 Input Common Case Ground Case Ground 7 Positive Input Input Common Input Common Positive Input Positive Input 8 — Table 1: Pin Out Inhibit Pins not in Use Leave unconnected Sync Leave unconnected Table 2: Pins Not in Use Dot on top of cover indicates pin one. 1 2 3 Dot on top of cover indicates pin one. 4 1 BOTTOM VIEW SINGLES EXCEPT 28 NON-FLANGED OR FLANGED 7 6 2 3 4 5 BOTTOM VIEW 28 SINGLE AND ALL DUALS NON-FLANGED OR FLANGED 5 8 7 6 Dotted line outlines flanged package option. Dotted line outlines flanged package option. See Figure 26 on page 16 and Figure 28 on page 18 for dimensions. See Figure 27 on page 17 and Figure 29 on page 19 for dimensions. Figure 3: MFK Single Pin Out (except 28S) Figure 4: MFK Dual Pin Out (includes 28S) www.craneae.com/interpoint Page 3 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt model numbering key Base Model Input Voltage MFK 28 12 SMD Numbers D F / 883 Output Voltage (R = decimal point, 3R3 = 3.3 Vout) Number of Outputs (S = single, D = dual) Case Option (Non-flanged case has no designator in this position) Screening (Standard screening has no designator in this position.) Figure 5: Model Numbering Key Standard Microcircuit Drawing (SMD) MFK Similar Part 5962-1421001HXC IN PROCESS MFK281R8S/883 5962-1421002HXC IN PROCESS MFK282R5S/883 5962-1421003HXC IN PROCESS MFK283R3S/883 5962-1421004HXC IN PROCESS MFK2805S/883 5962-1421005HXC IN PROCESS MFK285R7S/883 5962-1421006HXC IN PROCESS MFK2812S/883 5962-1421007HXC IN PROCESS MFK2815S/883 5962-1421008HTC IN PROCESS MFK2828S/883 5962-1421101HXC IN PROCESS MFK2805D/883 5962-1421102HXC IN PROCESS MFK2807D/883 5962-1421103HXC IN PROCESS MFK2812D/883 5962-1421104HXC IN PROCESS MFK2815D/883 The SMD number shown is for Class H screening, non-flanged. To indicate the flanged case option change the “X” to “Z” In the SMD number (“T” to “U” for 28 single). For exact specifications for an SMD product, refer to the SMD drawing. SMDs can be downloaded from: http://www.landandmaritime.dla.mil/programs/smcr Table 3: SMD Cross Reference To Category Base Model and Input Voltage Options MFK28 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 1R8, 2R5, 3R3, 05, 5R7, 12, 15, 28 S (non-flanged, leave blank) (standard, leave blank) 05, 07, 12, 15 D F (flanged) ES 883 Fill in for Model # MFK28 / Notes 1. Output Voltage: An R indicates a decimal point. 1R8 is 1.8 volts out. The values of 1.8, 2.5, 3.3 and 5.7 volts are only available in single output models. 2. Number of Outputs: S is a single output and D is a dual output. 3. Case Options: For the standard case, Figure 26 on page 16 or Figure 27 on page 17, leave the case option blank. For the flanged case option, Figure 28 on page 18 or Figure 29 on page 19, 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 11 on page 20 and Table 12 on page 21. Table 4: Model Number Options www.craneae.com/interpoint Page 4 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Table 5: Operating Conditions, All Models, 25°C case, 28 Vin, 100% load, unless otherwise specified. MFK 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 TYP pin to case except case pin — 300 °C — +150 °C -55 — +125 -55 — +135 °C From 100% at 125°C to 0% at 135°C 500 VDC at 25°C Undervoltage lockout 2 UNITS — 2000 - 3999 Class 2 ISOLATION: input to output or any MAX -65 MIL-STD-883, Method 3015 MIL-PRF-38534, 3.9.5.8.2 CURRENT LIMIT MIN % OF FULL LOAD AUDIO REJECTION 1 V 100 — — Megohms — 15 — V — 115 — % — 50 — dB — 570 kHz CONVERSION FREQUENCY FREE RUN -55°C TO +125°C 430 SYNCHRONIZATION INPUT FREQUENCY 450 — 550 kHz DUTY CYCLE 1 40 — 60 % ACTIVE LOW — — 0.8 ACTIVE HIGH 1 4.5 — 5.0 REFERENCED TO INPUT COMMON IF NOT USED INHIBIT ACTIVE LOW (OUTPUT DISABLED) Do not apply a voltage to the inhibit pin 4 LEAVE UNCONNECTED inhibit pin pulled low 3 INHIBIT PIN SOURCE CURRENT 1 — — 0.8 V — — 4 mA REFERENCED TO INHIBIT ACTIVE HIGH (OUTPUT ENABLED) V INPUT COMMON INHIBIT PIN CONDITION OPEN COLLECTOR OR Do not apply a voltage to the inhibit pin 4 UNCONNECTED OPEN PIN VOLTAGE 1 8.5 — 12 V For mean time between failures (MTBF) contact Applications Engineering [email protected] +1-425-882-3100 option 7 Notes 1. Guaranteed by qualification test and/or analysis. Not an in-line test. 2. Dual outputs: The over-current limit will trigger when the sum of the currents from both outputs reaches 115% (typical value) of the maximum rated “total” current of both outputs. www.craneae.com/interpoint 3. Tested with inhibit pin pulled to ground. 4. 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. Page 5 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Table 6: Electrical Characteristics -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified. single output models PARAMETER MFK281R8S CONDITIONS OUTPUT VOLTAGE OUTPUT CURRENT 2 OUTPUT POWER VIN = 16 TO 50 2 VIN = 16 TO 50 OUTPUT RIPPLE 10 kHz - 20 MHz LOAD REGULATION INPUT VOLTAGE MFK283R3S MAX MIN TYP MAX MIN TYP MAX 1.74 1.80 1.86 2.42 2.50 2.58 3.20 3.30 3.40 V — — 5.56 — — 5.0 — — 4.55 A W — — 10 — — 12.5 — — 15 — 30 60 — 30 60 — 25 60 — 35 80 — 35 80 — 30 80 VIN = 16 TO 50 — 5 20 — 5 20 — 5 20 mV NO LOAD TO FULL — 10 25 — 5 25 — 5 25 mV CONTINUOUS 16 28 50 16 28 50 16 28 50 V V sec.1 NO LOAD TO FULL TRANSIENT 1 — — 65 — — 65 — — 65 INPUT CURRENT NO LOAD — 25 50 — 25 50 — 25 50 INHIBITED — 2.5 4 — 2.5 4 — 2.5 4 10 kHz - 20 MHz — 30 75 — 30 80 — 30 80 TC = 25°C 69 72 — 73 76 — 76 79 — TC = -55°C TO +125°C 67 — — 71 — — 74 — — INPUT RIPPLE CURRENT EFFICIENCY UNITS TYP TC = 25°C TC = -55°C TO +125°C LINE REGULATION MFK282R5S MIN mV p-p mA mA p-p % LOAD FAULT 3, 4 POWER DISSIPATION — — 8.5 — — 8.5 — — 8.5 W SHORT CIRCUIT RECOVERY 1 — — 20 — — 20 — — 20 ms STEP LOAD RESPONSE 5, 6 TRANSIENT — 125 200 — 125 200 — 125 200 mV pk 50% - 100% - 50% RECOVERY — 200 400 — 100 300 — 200 300 µs STEP LINE Response 1, 5, 6 TRANSIENT — — 350 — — 350 — — 350 mV pk 16 - 50 - 16 V RECOVERY — 0.5 1 — 0.5 1 — 0.5 1 ms START-UP 7 DELAY — — 25 — — 25 — — 25 ms FULL LOAD OVERSHOOT 1 — — 50 — — 50 — — 50 mV pk CAPACITIVE LOAD 1 NO EFFECT ON DC TC = 25°C PERFORMANCE — — 2000 — — 2000 — — 2000 µF Notes 1. Guaranteed by qualification test and/or analysis. Not an in-line test. 2. A minimum load of 20% is recommended. 3.Short circuit measured with 1% 10 milliohm resistive load. 4. Indefinite short circuit protection not guaranteed above 125°C. www.craneae.com/interpoint 5. Step transition time >10 µs. 6. 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. CL = 0. 7. Tested on release from inhibit. Page 6 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Table 7: Electrical Characteristics -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified. single output models PARAMETER MFK2805S CONDITIONS OUTPUT OUTPUT POWER 2 OUTPUT RIPPLE 10 kHz - 20 MHz LINE REGULATION LOAD REGULATION INPUT VOLTAGE MFK2812S MIN TYP MAX MIN TYP MAX MIN TYP MAX 4.85 5.00 5.15 5.52 5.70 5.87 11.76 12.00 12.24 VIN = 16 TO 50 TC = 25°C OUTPUT VOLTAGE CURRENT 2 MFK285R7S UNITS V — — 4.0 — — 4.0 — — 2.08 A VIN = 16 TO 50 — — 20 — — 22.8 — — 25 W — 40 80 — 40 80 — 35 80 TC = -55°C TO +125°C — — 100 — — 100 — — 100 VIN = 16 TO 50 — 5 20 — 5 20 — 5 20 mV NO LOAD TO FULL — 5 25 — 5 25 — 5 20 mV CONTINUOUS 16 28 50 16 28 50 16 28 50 V — — 65 — — 65 — — 65 V sec.1 NO LOAD TO FULL TRANSIENT 1 INPUT CURRENT NO LOAD — 25 50 — 25 50 — 20 50 INHIBITED — 2.4 4 — 2.4 4 — 2.5 4 mV p-p mA INPUT RIPPLE CURRENT 10 kHz - 20 MHz — 40 85 — 40 85 — 45 90 EFFICIENCY TC = 25°C 79 82 — 79 82 — 83 86 — 77 — — 77 — — 81 — — LOAD FAULT 3, 4 TC = -55°C TO +125°C POWER DISSIPATION — 6 8.5 — 6 8.5 — 6 8.5 W SHORT CIRCUIT RECOVERY 1 — — 20 — — 20 — — 20 ms STEP LOAD RESPONSE 5, 6 TRANSIENT — — 400 — — 400 — 350 500 mV pk 50% - 100% - 50% RECOVERY — — 300 — — 300 — 300 500 µs TRANSIENT — — 500 — — 570 — — 1300 mV pk 16 - 50 - 16 V RECOVERY — 0.5 1 — 0.5 1 — 0.5 1 ms START-UP 7 DELAY — — 25 — — 25 — — 25 ms FULL LOAD CAPACITIVE LOAD 1 OVERSHOOT 1 — 0 50 — 0 50 — 0 120 mV pk NO EFFECT ON DC TC = 25°C PERFORMANCE — — 2000 — — 2000 — — 2000 µF STEP LINE Response 1, 5, 6 Notes 1. Guaranteed by qualification test and/or analysis. Not an in-line test. 2. A minimum load of 20% is recommended. 3.Short circuit measured with 1% 10 milliohm resistive load. 4. Indefinite short circuit protection not guaranteed above 125°C www.craneae.com/interpoint mA p-p % 5. Step transition time >10 µs. 6. 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. CL = 0. 7. Tested on release from inhibit. Page 7 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Table 8: Electrical Characteristics -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified. single output models PARAMETER MFK2815S CONDITIONS MAX MIN TYP MAX 14.70 15.00 15.30 27.16 28.00 28.84 V — — 1.67 — — 0.89 A OUTPUT POWER VIN = 16 TO 50 — — 25 — — 25 W — 40 80 — 80 150 TC = -55°C TO +125°C — 50 100 — 100 200 VIN = 16 TO 50 — 5 20 — 150 280 mV NO LOAD TO FULL — 5 20 — 150 280 mV CONTINUOUS 16 28 50 16 28 50 V V VIN = 16 TO 50 2 OUTPUT RIPPLE TC = 25°C 10 kHz - 20 MHz LINE REGULATION LOAD REGULATION INPUT VOLTAGE sec.1 NO LOAD TO FULL TRANSIENT 1 — — 65 — — 65 INPUT CURRENT NO LOAD — 20 50 — 30 55 INHIBITED — 2.5 4 — 2.5 4 INPUT RIPPLE CURRENT 10 kHz - 20 MHz — 50 110 — 50 100 EFFICIENCY TC = 25°C 84 87 — 81 84 — 82 — — 80 — — — 6 8 — 6 8.5 TC = -55°C TO +125°C LOAD FAULT 3, 4 UNITS TYP OUTPUT VOLTAGE OUTPUT CURRENT 2 MFK2828S MIN POWER DISSIPATION 1 mV p-p mA mA p-p % W SHORT CIRCUIT RECOVERY — — 20 — — 20 ms STEP LOAD RESPONSE 5, 6 TRANSIENT — 400 600 — 900 1200 mV pk 50% - 100% - 50% RECOVERY — 300 500 — 500 600 µs 1, 5, 6 TRANSIENT — — 1500 — — 2800 mV pk 16 - 50 - 16 V RECOVERY — 0.5 1 — 0.5 1 ms START-UP 7 DELAY — — 25 — — 25 ms FULL LOAD OVERSHOOT 1 — 0 150 — 0 280 mV pk CAPACITIVE LOAD 1 NO EFFECT ON DC TC = 25°C PERFORMANCE — — 2000 — — 1000 µF STEP LINE Response Notes 1. Guaranteed by qualification test and/or analysis. Not an in-line test. 2. A minimum load of 20% is recommended. 3.Short circuit measured with 1% 10 milliohm resistive load. 4. Indefinite short circuit protection not guaranteed above 125°C www.craneae.com/interpoint 5. Step transition time >10 µs. 6. 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. CL = 0. 7. Tested on release from inhibit. Page 8 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Table 9: Electrical Characteristics -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified. DUAL output models MFK2805D MFK2807D UNITS PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX OUTPUT VOLTAGE + VOUT 4.85 5.00 5.15 6.86 7.00 7.14 4.82 5.00 5.18 6.83 7.00 7.17 EITHER OUTPUT — ±2.0 2.80 — ±1.5 2.10 VIN = 16 to 50 V TOTAL OUTPUT — — 4.0 — — 3.0 OUTPUT POWER 2, 3 EITHER OUTPUT — ±10 18 — ±10.5 18.9 VIN = 16 to 50 V TOTAL OUTPUT — — 20 — — 21 — — 80 — — 70 ±VOUT, 10 kHz - 20 MHz TC = 25°C TC = -55°C to +125°C — — 90 — — 80 + VOUT — 5 20 — 5 20 VIN = 16 to 50 V - VOUT — 20 100 — 20 100 + VOUT — 5 20 — 5 20 NL to Full, Balanced - VOUT — 35 250 — 50 250 TC = 25°C — — 360 — — 400 CONTINUOUS 16 28 50 16 28 50 V TRANSIENT 1 sec.1 — — 65 — — 65 V NO LOAD — 30 50 — 30 50 INHIBITED — 2.5 4 — 2.5 4 10 kHz - 20 MHz — 35 70 — 35 70 TC = 25°C OUTPUT CURRENT 2, 3 OUTPUT RIPPLE LINE REGULATION LOAD REGULATION CROSS REGULATION 4 INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT EFFICIENCY - VOUT V A W mV p-p mV mV mV mA mA p-p 78 81 — 81 83 — TC = -55°C to +125°C 76 — — 79 — — POWER DISSIPATION — 6 8.5 — 6 8 W Short Circuit RECOVERY 1 — 15 20 — 15 20 ms STEP LOAD RESPONSE 7, 8, 9 TRANSIENT ±Vout — 100 450 — 125 500 mV pk RECOVERY — 200 500 — 200 500 µs TRANSIENT — — 500 — — 700 mV pk RECOVERY — 0.5 1 — 0.5 1 ms DELAY — — 20 — — 20 ms OVERSHOOT 1 — 0 50 — 0 70 mV pk — — 1000 — — 1000 µF LOAD FAULT 5, 6 50%-100%-50%, Balanced Loads STEP LINE RESPONSE 1, 7, 9 ±Vout , VIN = 16 - 50 - 16 V START-UP 10 CAPACITIVE LOAD TC = 25°C 1, 11 NO EFFECT ON DC PERFORMANCE Notes 1. Guaranteed by qualification test and/or analysis. Not an in-line test. 2. Up to 70% of the total output power is available from either output providing the opposite output is simultaneously carrying 30% of the total output power. 3. Recommended minimum load is 20% total load (sum of both outputs). 4.Effect on –Vout for the following conditions: +Po = 30% to 70%; - Po = 70% to 30% 5.Short circuit measured with 1% 10 milliohm resistive load. 6.Indefinite short circuit protection not guaranteed above 125°C (case) www.craneae.com/interpoint % 7. 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. CL = 0. 8.Response of either output with the opposite output held at half of the total output power. 9.Step transition time >10 µs. 10. Tested on release from inhibit. 11. Each output. Page 9 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Table 10: Electrical Characteristics -55°C to +125°C case, 28 Vin, 100% load, free run, unless otherwise specified. DUAL output models PARAMETER MFK2812D MFK2815D CONDITIONS MIN TYP MAX MIN TYP MAX + VOUT 11.76 12.00 12.24 14.70 15.00 15.30 11.70 12.00 12.30 14.63 15.00 15.38 EITHER OUTPUT — ±1.04 1.45 — ±0.833 1.16 VIN = 16 to 50 V TOTAL OUTPUT — — 2.08 — — 1.66 OUTPUT POWER 2, 3 EITHER OUTPUT — ±12.5 22.5 — ±12.5 22.5 VIN = 16 to 50 V TOTAL OUTPUT — — 25 — — 25 TC = 25°C — — 90 — — 90 — — 90 — — 90 + VOUT + VOUT OUTPUT VOLTAGE OUTPUT CURRENT 2, 3 OUTPUT RIPPLE ±VOUT, 10 kHz - 20 MHz LINE REGULATION VIN = 16 to 50 V LOAD REGULATION NL to Full, Balanced CROSS REGULATION 4 INPUT VOLTAGE INPUT CURRENT - VOUT TC = -55°C to +125°C UNITS V A W mV p-p — 5 20 — 5 20 - VOUT — 20 150 — 20 150 — 5 20 — 5 20 - VOUT TC = 25°C — 60 250 — 100 250 — — 700 — — 800 CONTINUOUS 16 28 50 16 28 50 V TRANSIENT 1 sec.1 — — 65 — — 65 V NO LOAD — 30 50 — 30 50 INHIBITED — 2.5 4 — 2.5 4 INPUT RIPPLE CURRENT 10 kHz - 20 MHz — 50 100 — 40 100 EFFICIENCY TC = 25°C mV mV mV mA mA p-p 82 85 — 83 86 — TC = -55°C to +125°C 80 — — 81 — — POWER DISSIPATION — 5 8 — 5 8 W Short Circuit RECOVERY 1 — 15 20 — 15 20 ms STEP LOAD RESPONSE 7, 8, 9 TRANSIENT ±Vout — 350 600 — 400 650 mV pk RECOVERY — 250 550 — 250 550 µs TRANSIENT — — 1300 — — 1500 mV pk RECOVERY — 0.5 1 — 0.5 1 ms DELAY — — 20 — — 20 ms OVERSHOOT 1 — 0 120 — 0 150 mV pk — — 1000 — — 1000 µF LOAD FAULT 5, 6 50%-100%-50%, Balanced Loads STEP LINE RESPONSE 1, 7, 9 ±Vout , VIN = 16 - 50 - 16 V START-UP 10 CAPACITIVE LOAD TC = 25°C 1, 11 NO EFFECT ON DC PERFORMANCE Notes 1. Guaranteed by qualification test and/or analysis. Not an in-line test. 2. Up to 70% of the total output power is available from either output providing the opposite output is simultaneously carrying 30% of the total output power. 3. Recommended minimum load is 20% total load (sum of both outputs). 4.Effect on –Vout for the following conditions: +Po = 30% to 70%; - Po = 70% to 30% 5.Short circuit measured with 1% 10 milliohm resistive load. 6.Indefinite short circuit protection not guaranteed above 125°C (case) www.craneae.com/interpoint % 7. 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. CL = 0. 8.Response of either output with the opposite output held at half of the total output power. 9.Step transition time >10 µs. 10. Tested on release from inhibit. 11. Each output. Page 10 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Typical Performance Plots: 25°C case, 28 Vin, 100% load, free run, unless For reference only, not guaranteed specifications. MFK2805S Step Load 100% - 50% MFK2805S Step Load 50% - 100% Figure 6 Figure 7 MFK2805S Step Line 16 - 50 Volts MFK2805S Step Line 50 - 16 Volts Figure 8 www.craneae.com/interpoint otherwise specified. Figure 9 Page 11 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Typical Performance Plots: 25°C case, 28 Vin, 100% load, free run, unless For reference only, not guaranteed specifications. otherwise specified. 75 16 V EFFICIENCY (%) 70 42 V 28 V 50 V 65 60 55 2 4 6 WATTS 8 20% 10 100% OUTPUT POWER MFK2805S Start-up 20% Load MFK281R8S Efficiency Figure 10 Figure 11 80 85 16 V 70 80 28 V 42 V EFFICIENCY (%) EFFICIENCY (%) 75 50 V 65 60 55 16 V 28 V 75 42 V 50 V 70 65 5 10 15 WATTS 20 20% 60 25 100% 6 9 WATTS 12 20% OUTPUT POWER MFK283R3S Efficiency Figure 12 Figure 13 Page 12 of 21 MFK Rev AE - 2015.06.04 15 100% OUTPUT POWER MFK282R5S Efficiency www.craneae.com/interpoint 3 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Typical Performance Plots: 25°C case, 28 Vin, 100% load, free run, unless For reference only, not guaranteed specifications. 90 16 V 80 28 V 42 V EFFICIENCY (%) EFFICIENCY (%) 85 otherwise specified. 50 V 75 70 16 V 85 42 V 28 V 80 50 V 75 65 4 8 12 16 70 20 5 10 15 WATTS 20% 20 25 WATTS 100% 20% 100% OUTPUT POWER OUTPUT POWER MFK2805S Efficiency MFK2812S Efficiency Figure 14 Figure 15 MFK285R7S Efficiency will be added in the future. 90 90 16 V 42 V 28 V EFFICIENCY (%) EFFICIENCY (%) 85 50 V 80 16 V 28 V 42 V 80 50 V 75 75 70 85 70 5 10 15 20 WATTS 20% 25 10 15 WATTS 20 20% 100% MFK2815S Efficiency MFK2828S Efficiency Figure 16 Figure 17 Page 13 of 21 MFK Rev AE - 2015.06.04 25 100% OUTPUT POWER OUTPUT POWER www.craneae.com/interpoint 5 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Typical Performance Plots: 25°C case, 28 Vin, 100% load, free run, unless For reference only, not guaranteed specifications. otherwise specified. MFK2815D Step Load 50% - 100% MFK2815D Step Load 100% - 50% Figure 18 Figure 19 MFK2815D Step Line 16 - 50 Volts MFK2815D Step Line 50 - 16 Volts Figure 20 Figure 21 www.craneae.com/interpoint Page 14 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Typical Performance Plots: 25°C case, 28 Vin, 100% load, free run, unless For reference only, not guaranteed specifications. otherwise specified. 85 16 V EFFICIENCY (%) 80 42 V 28 V 50 V 75 70 65 4 8 12 16 20 WATTS 20% 100% OUTPUT POWER MFK2815D Start-up 20 % Load MFK2805D Efficiency Figure 22 Figure 23 85 28 V 42 V 16 V 85 42 V 28 V 80 50 V EFFICIENCY (%) EFFICIENCY (%) 90 16 V 75 50 V 80 75 70 70 5 10 15 20 25 65 WATTS 20% 100% 5 20% OUTPUT POWER 10 15 20 WATTS OUTPUT POWER MFK2812D Efficiency MFK2815D Efficiency Figure 24 Figure 25 MFK2807D Efficiency will be added in the future. www.craneae.com/interpoint Page 15 of 21 MFK Rev AE - 2015.06.04 25 100% Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 16 to 50 volts input – 25 Watt BOTTOM VIEW MFK SINGLE 2 3 4 7 6 5 1.460 max. (37.08) 0.000 0.25 (6.35) 0.000 0.360 max (9.14) 0.160 (4.06) 0.000 1 1.105 (28.07) 0.040 dia. (1.02) 0.605 (15.34) 0.705 (17.91) 0.905 (22.99) 1.130 max. (28.70) 0.960 (24.38) Squared corner and dot on top of case indicate pin one. 0.205 (5.21) Seam Seal Weight: 38 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/Gold Cover Kovar/Nickel Pins #52 alloy/Gold ceramic seal Gold plating of 50 - 150 microinches included in pin diameter Seal Hole: 0.123 ±0.002 (3.12 ±0.05) Case E5, Rev G, 2015.04.21 Please refer to the numerical dimensions for accuracy. Figure 26: MFK Single Output Except 28 volt single www.craneae.com/interpoint Page 16 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 16 to 50 volts input – 25 Watt BOTTOM VIEW MFK DUAL 3 8 4 5 7 6 1.460 max. (37.08) 2 1.105 (28.07) 0.000 0.25 (6.35) 0.000 0.360 max (9.14) 0.160 (4.06) 0.000 1 0.705 (17.91) 0.905 (22.99) 0.030 dia. (0.76) 0.505 (12.83) 1.130 max. (28.70) 0.960 (24.38) Squared corner and dot on top of case indicate pin one. 0.205 (5.21) Seam Seal Weight: 38 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/Gold Cover Kovar/Nickel Pins #52 alloy/Gold ceramic seal Gold plating of 50 - 150 microinches included in pin diameter Seal Hole: 0.091 ±0.002 (2.31 ±0.05) Case E6, Rev F, 2015.04.21 Please refer to the numerical dimensions for accuracy. Figure 27: MFK Dual Output Includes 28 volt single www.craneae.com/interpoint Page 17 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 16 to 50 volts input – 25 Watt BOTTOM VIEW MFK SINGLE FLANGED Flanged cases: Designator "F" required in Case Option position of model number Seam Seal Squared corner and dot on top of case indicate pin one. 1.130 max. (28.70) 0.960 (24.38) 0.040 dia. (1.02) 1 2 3 2 x Dia 0.128 ±0.002 (3.25 ±0.05) 4 2 x R 0.130 (3.30) 0.560 (14.22) 1.590 (40.39) 1.105 (28.07) 5 0.905 (22.99) 0.205 (5.21) 0.140 (3.56) 0.000 0.25 (6.35) 0.000 0.360 max (9.14) 6 0.605 (15.34) 0.705 (17.91) 7 0.160 (4.06) 0.000 (2.005 max (50.93)) top of header Flange thickness: 0.047 (1.19) Base Plate Detail, Edge View Weight: 38 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/Gold Cover Kovar/Nickel Pins #52 alloy/Gold compression glass seal. Gold plating of 50 - 150 microinches included in pin diameter Seal Hole: 0.123 ±0.002 (3.12 ±0.05) Case G5, Rev F, 2015.04.21 Please refer to the numerical dimensions for accuracy. Figure 28: MFK Single Output Flanged Except 28 volt single www.craneae.com/interpoint Page 18 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 16 to 50 volts input – 25 Watt BOTTOM VIEW CASE MFK DUAL FLANGED Flanged cases: Designator "F" required in Case Option position of model number Seam Seal Squared corner and dot on top of case indicate pin one. 1.130 max. (28.70) 0.960 (24.38) 0.030 dia. (0.76) 1 2 3 4 2 x Dia 0.128 ±0.002 (3.25 ±0.05) 5 2 x R 0.130 (3.30) 0.560 (14.22) 1.590 (40.39) 1.105 (28.07) 0.905 (22.99) 6 0.705 (17.91) 0.205 (5.21) 0.140 (3.56) 0.000 0.25 (6.35) 0.000 0.360 max (9.14) 7 0.505 (12.83) 8 0.160 (4.06) 0.000 (2.005 max (50.93)) top of header Flange thickness: 0.047 (1.19) Base Plate Detail, Edge View Weight: 38 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/Gold Cover Kovar/Nickel Pins #52 alloy/Gold compression glass seal. Gold plating of 50 - 150 microinches included in pin diameter Seal Hole: 0.123 ±0.002 (3.12 ±0.05) Case G6, Rev F, 2015.04.21 Please refer to the numerical dimensions for accuracy. Figure 29: MFK Dual Output Flanged Includes 28 volt single www.craneae.com/interpoint Page 19 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 1628 to 50 volts input – 25 Watt Volt input – 25 Watt Table is for reference only. See individual Series' datasheets for specific screening. Standard, /eS (nOn-QMl) and /883 (claSS h, QMl) Mil-prF-38534 eleMent eValuatiOn cOMpOnent-leVel teSt perFOrMed nOn-QMl 1 QMl Standard and /eS claSS h /883 M/S 2 M/S 2 p3 n n n Visual n n Internal Visual n Final Electrical n n Wire Bond Evaluation n n Element Electrical Notes 1. Standard and /ES non-QML products may not meet all of the requirements of MIL-PRF-38534. 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. Table 11: Element Evaluation tAbLe 5: eLeMent evALuAtion–HigH reLiAbiLity stAnDArD, /es AnD /883 (CLAss H) www.craneae.com/interpoint Page 20 of 21 MFK Rev AE - 2015.06.04 Crane Aerospace & Electronics Power Solutions MFK Single and Dual DC-DC Converters 16 to 50 volts input – 25 Watt Table is for reference only. See individual Series' datasheets for specific screening. Standard, /eS (nOn-QMl) and /883 (claSS h, QMl) Mil-prF-38534 enVirOnMental Screening 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 pInD,testMethod2020,Cond.a n n3 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, Method 1014, Cond. C n n Fine Leak, Method 1014, Cond. A n n n n Gross Leak, Dip n Finalvisualinspection,Method2009 n Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes 1. Standard and /ES, non-QML products, 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. able 12: –H Environmental Screening tAbLe 6: environMentAL sTCreening igH reLiAbiLity stAnDArD, /es AnD /883 (CLAss H) MFK Single and Dual, MFK Rev AE - 2015.06.04. This revision supersedes all previous releases. All technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint is a registered trademark of Crane Co. MFK Series is a trademark of Crane Electronics, Inc. Copyright © 1999 - 2015 Crane Electronics, Inc. All rights reserved. www.craneae.com/interpoint Page 21 of 21