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Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converters
28 VOLT INPUT - 65 WATT
FEATURES
* * * * * * * * * * * * * * -55 to +125C operation 16 to 40 VDC input Fully Isolated Magnetic feedback Fixed frequency, 600 kHz typical Topology - Single Ended Forward 50 V for up to 120 ms transient protection Inhibit (input & output side) Sync function (in and out) Output trim on single output models Indefinite short circuit protection Remote sense on single output models Up to 87% efficiency / 43 W/in3 Parallelable up to 148 watts
MODELS
VDC OUTPUT SINGLE 3.3 5 12 15 28 DUAL 5 12 15
DESCRIPTION
The MFL SeriesTM 28-volt DC/DC converters are rated up to 65 watts of output power over a -55C to +125C temperature range with a 28 VDC nominal input. On dual output models up to 70% of the rated output power can be drawn from either the positive or negative output. Current sharing allows the units to be paralleled for total power of up to 148 watts. The welded, hermetically sealed package is only 3.005 x 1.505 x 0.400 inches, giving the series an overall power density of up to 43 watts per cubic inch.
Other output voltages available upon request, including 2 V, 8 V and 54 V single.
INHIBIT
The MFL Series converters have two TTL compatible inhibit terminals (INH1 and INH2) that can be used to disable power conversion, resulting in a very low quiescent input current and no generation of switching noise. An open collector TTL compatible low (<0.8 volts) is required to inhibit the converter between INH1 (pin 4) and Input Common (pin 2). An open collector TTL compatible low (<0.5 volts) is required to inhibit the converter between INH2 (pin 12) and Output Common (pin 8). The application of intermediate voltages to these pins (1.5 to 10.5 volts) should be avoided.
DESIGN FEATURES
The MFL Series converters are switching regulators that use a quasi-square wave, single ended forward converter design with a constant switching frequency of 600 kHz. Isolation between input and output circuits is provided with a transformer in the forward path and a wide bandwidth magnetic coupling in the feedback control loop. The MFL uses a unique dual loop feedback technique that controls output current with an inner feedback loop and an output voltage with a cascaded voltage mode feedback loop. The additional secondary current mode feedback loop improves transient response in a manner similar to primary current mode control and allows for ease of paralleling, but without the cost and complexity. The constant frequency, pulse-width modulated converters use a quasi-square wave single-ended forward design. Tight load regulation is achieved through a wide-bandwidth magnetic feedback circuit. The output on single MFL models can be trimmed (see Figure 1 for voltage changes with different resistor values).
SYNC
Converters may be synced to an external clock (525 to 675 kHz) or to one another by using the sync in or out pins. The nominal freerun switching frequency is 600 kHz.
CURRENT AND PARALLEL OPERATION
Multiple MFL converters may be used in parallel to drive a common load (see Figure 2). In this mode of operation the load current is shared by two or three MFL converters. In current sharing mode, one MFL converter is designated as a master. The SLAVE pin (pin 11) of the master is left unconnected and the MSTR/INH2 pin (pin 12) of the master is connected to the SLAVE pin (pin 11) of the slave units. The units designated as slaves have the MSTR/INH2 pin (pin 12) connected to the SNS RTN pin (pin 9). Figure 2 shows the typical setup for two or three units in parallel. Note that synchronizing the units together (though shown in the figure) is not required for current sharing operation. A second slave unit may be placed in parallel with a master and slave; this requires the TRI pin (pin 3) of the master unit to be connected to the SNS RTN pin (pin 9). When paralleled, 76% of the total combined power ratings of the MFL converters are available at the load. Overload and short circuit performance are not adversely affected during parallel operation.
Crane Aerospace & Electronics Electronics Group (Interpoint Brand) PO Box 97005 * Redmond WA 98073-9705 425.882.3100 * electronics@craneae.com www.craneae.com
Page 1 of 13 Rev D - 20060601
Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converters
28 VOLT INPUT - 65 WATT
OPERATING CONDITIONS AND CHARACTERISTICS
Input Voltage Range * 16 to 40 VDC continuous * 50 V for 120 msec transient Output Power * 50 to 65 watts depending on model Lead Soldering Temperature (10 sec per lead) * 300C Storage Temperature Range (Case) * -65C to +150C Power Dissipation (Pd) * 14 watts (16 watts MFL2805S, MFL2805D) Case Operating Temperature (Tc) * -55C to +125C full power * -55C to +135C absolute Derate Output Power/Current * Linearly from 100% at 125C to 0% at 135C * MFL283R3S: linearly from 100% at 100C to 80% at 125C and to 0% at 135C Output Voltage Temperature Coefficient * 100 ppm/C typical Input to Output Capacitance * 150 pF, typical Current Limit * 125% of full load typical Isolation * 100 megohm minimum at 500 V Audio Rejection * 50 dB typical Conversion Frequency (-55C to 125C) * Free run mode 600 kHz typical 525 kHz. min, 675 kHz max Inhibit Pin Voltage (unit enabled) * INH1 = 9 to12 V, INH2 = 6 to 9 V
SYNC AND INHIBIT (INH1, INH2)
Sync In (525 to 675 kHz) * Duty cycle 40% min, 60% max * Logic low 0.8 V max * Logic high 4.5 V min, 5 V max * 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 Inhibit pin current 10 mA max INH2 referenced to output common Logic low 0.5 V max Inhibit pin current 5 mA max * Logic high (output enabled) Open collector
MECHANICAL AND ENVIRONMENTAL
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. Case options V, W, Y and Z are available by special order. Weight (maximum) 86 grams Screening Standard, ES, or /883 (Class H, QML). See "883, Class H, QML Products - Element Evaluation" and "883, Class H, QML Products - Environmental Screening" for more information.
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Page 2 of 13 Rev D - 20060601
Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converters
28 VOLT INPUT - 65 WATT
PIN OUT Pin 1 2 3 4 5 6 7 8 9 10 11 12 Single Output Positive Input Input Common Triple (TRI) Inhibit 1 (INH1) Sync Out Sync In Positive Output Output Common Sense Return Positive Sense Slave Master/ Inhibit 2 MFL2828S Positive Input Input Common Triple (TRI) Inhibit 1 (INH1) Sync Out Sync In Positive Output No connection Output Common No connection Slave Master/ Inhibit 2 Dual Output Positive Input Input Common Triple (TRI) Inhibit 1 (INH1) Sync Out Sync In Positive Output Output Common Negative Output No connection Slave Master / Inhibit 2
TR1 Master Slave Sync in Inhibit (INH1) Inhibit (INH2) Sync Out Sense Lines
PINS NOT IN USE
Leave unconnected Leave unconnected Leave unconnected Connect to input common Leave unconnected Leave unconnected Leave unconnected Must be connected to appropriate outputs
Angled corner indicates pin one.
1 2 3 4 5 6
12 11
TOP VIEW MFL (Pin side, marked side) See case U for dimensions. Case optioins V, W, Y and Z are available by special order.
10 9 8 7
FIGURE 1: PIN OUT
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Page 3 of 13 Rev D - 20060601
Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converters
28 VOLT INPUT - 65 WATT
SINGLE OUTPUT MODELS CONNECTION DIAGRAMS - SENSE AND PARALLEL
+ - 1 2 3 Inhibit Sync In 4 5 6 Positive Input Input Common TR1 INH1 Sync Out Sync In MSTR/INH2 12 Slave 11 Pos. Sense 10 9 8 7 + RL
28V
Sense Return Output Common
-
Positive Output
REMOTE SENSE CONNECTION 1 2 3 Inhibit Sync In 4 5 6 MSTR/INH2 12 11 Slave 10 Pos. Sense 9 Sense Return 8 Output Common 7 Positive Output
28V
+ -
Positive Input Input Common TR1 INH1 Sync Out Sync In
RA - + RL
OUTPUT VOLTAGE ADJUST CONNECTION VOUT INCREASE (VOLT) 0.1 0.2 0.3 0.4 0.5 RA (OHMS) 5-V 70 140 210 280 350 12-V 25 50 75 100 125 15-V 20 40 60 80 100 3.3-V 120 240 360 480 600
FIGURE 2: SENSE CONNECTIONS AND TRIM TABLE
+ - 1 2 3 Inhibit Sync In 4 5 6 Positive Input Input Common TR1 INH1 Sync Out Sync In MSTR/INH2 12 Slave 11 Pos. Sense Sense Return 10 9 8 7 + RL -
28V
MASTER
Output Common Positive Output
CONNECT ONLY WHEN 2 SLAVES ARE USED 1 2 3 4 5 6 Positive Input Input Common TR1 INH1 Sync Out Sync In MSTR/INH2 12 Slave 11 Pos. Sense 10 Sense Return 9 Output Common 8 7 Positive Output
SLAVE 1
1 2 3 4 5 6
Positive Input Input Common TR1 INH1 Sync Out Sync In
MSTR/INH2 12 Slave 11 Pos. Sense 10 Sense Return 9 Output Common 8 Positive Output 7
SLAVE 2
FIGURE 3: PARALLEL CONNECTIONS
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Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converters
28 VOLT INPUT - 65 WATT
MODEL NUMBERING KEY
MFL Base Model Input Voltage Output Voltage Number of Outputs (S = single, D = dual) Screening (Standard screening has no designator in this position.) 28 05 S / ES
SMD NUMBERS
STANDARD MICROCIRCUIT DRAWING (SMD) IN PROCESS 5962-9316301HXC 5962-9316201HXC 5962-9316101HXC IN PROCESS 5962-9319101HXC 5962-9319201HXC 5962-9319301HXC MFL SERIES SIMILAR PART MFL283R3S MFL2805S/883 MFL2812S/883 MFL2815S/883 MFL2828S/883 MFL2805D/883 MFL2812D/883 MFL2815D/883
For exact specifications for an SMD product, refer to the SMD drawing. SMDs can be downloaded from: http://www.dscc.dla.mil/programs/smcr
Model Selection
MFL28 Base model
Vout value
number of outputs
screening
Choose one from each of the following rows Vout value Number of outputs Screening for singles: 3R3, 5, 12, 15, 28
"R" = decimal point, 3R3 = 3.3VDC
for duals: 5, 12, 15
S (single) or D (dual) standard screening, leave blank /ES (ES screening), /883 (Class H, QML)
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Page 5 of 13 Rev D - 20060601
Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converters
28 VOLT INPUT - 65 WATT
Electrical Characteristics: -55C to +125 C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODELS PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT OUTPUT POWER OUTPUT RIPPLE VOLTAGE 10 k - 2 MHz LINE REGULATION LOAD REGULATION INPUT VOLTAGE NO LOAD TO FULL INPUT CURRENT CONDITION Tc = 25C VIN = 16 TO 40 VDC VIN = 16 TO 40 VDC Tc = 25C Tc = -55C to +125C VIN = 16 to 40 VDC NO LOAD TO FULL CONTINUOUS TRANSIENT1, 3 50 ms NO LOAD INHIBITED - INH1 INHIBITED - INH2 INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT 10 kHz - 10 MHz Tc = 25C POWER DISSIPATION SHORT CIRCUIT Tc = 25C RECOVERY1 STEP LOAD RESP. 50% - 100% - 50% TRANSIENT RECOVERY1, 4 STEP LINE RESP. 16 - 40 - 16 VDC TRANSIENT1, 5 RECOVERY1, 4 DELAY OVERSHOOT1 Tc=25C1, 7
MFL283R3S MIN 3.26 0 0 -- -- -- -- 16 -- -- -- -- -- 73 TYP MAX 3.3 3.34 -- 12.122 -- 10 10 0 -- 28 -- 70 9 35 15 -- 402 35 50 20 40 40 50 100 14 70 50 --
MFL2805S MIN 4.95 0 0 -- -- -- -- 16 -- -- -- -- -- 77 TYP MAX 5.00 5.05 -- -- 15 30 0 -- 28 -- 70 9 35 15 80 10 50 35 50 20 20 40 50 120 14 70 50 --
MFL2812S MIN TYP MAX 11.88 12.00 12.12 0 0 -- -- -- -- 16 -- -- -- -- -- 83 -- -- 30 45 0 -- 28 -- 50 9 35 15 86 5 60 75 100 20 20 40 50 100 14 70 50 -- mA pp % UNITS VDC A W mV p-p mV mV VDC V mA mA
-- -- -- -- -- -- -- -- --
12.5 1.5 200 1.5 250 200 3.5 0 --
20 4 400 3.0 300 600 6 25 1000
-- -- -- -- -- -- -- -- --
12.5 1.5 250 1.5 250 200 3.5 0 --
16 4 350 3.0 300 300 6 25 1000
-- -- -- -- -- -- -- -- --
10 1.5 450 1.5 250 200 3.5 0 --
14 4 600 3.0 400 300 6 50 1000
W ms mV pk ms mV pk s ms mV pk F
START-UP6 COUT
Notes 1. Guaranteed by design, not tested. 2. MFL283R3S current and power maximum are at 25C only. 3. Unit will shut down above approximately 45V but will be undamaged and will restart when voltage drops into normal range. 4. Recovery time is measured from application of the transient to point at which Vout is within 1% of final value.
5. Transition time > 10 s. 6. Tested on release from inhibit. 7. Shall not compromise DC performance
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Page 6 of 13 Rev D - 20060601
Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converters
28 VOLT INPUT - 65 WATT
Electrical Characteristics: -55C to +125 C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODELS PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT OUTPUT POWER OUTPUT RIPPLE VOLTAGE 10 k - 2 MHz LINE REGULATION LOAD REGULATION INPUT VOLTAGE NO LOAD TO FULL INPUT CURRENT CONDITION Tc = 25C VIN = 16 TO 40 VDC VIN = 16 TO 40 VDC Tc = 25C Tc = -55C to +125C VIN = 16 to 40 VDC NO LOAD TO FULL CONTINUOUS TRANSIENT1, 3 50 ms NO LOAD INHIBITED - INH1 INHIBITED - INH2 INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT 10 kHz - 10 MHz Tc = 25C POWER DISSIPATION SHORT CIRCUIT Tc = 25C RECOVERY1 STEP LOAD RESP. 50% - 100% - 50% TRANSIENT RECOVERY1, 4 STEP LINE RESP. 16 - 40 - 16 VDC TRANSIENT1, 5 RECOVERY1, 4 DELAY OVERSHOOT1, Tc=25C1, 7 -- 84
MFL2815S MIN TYP MAX
MFL2828S2 MIN TYP MAX2 UNITS VDC A W mV p-p mV mV VDC V mA mA
14.85 15.00 15.15 0 0 -- -- -- -- 16 -- -- -- -- -- -- 30 45 0 0 28 -- 50 9 35 15 87 4.33 65 85 110 20 20 40 50 100 14 70 50 --
27.72 28.00 28.28 0 0 -- -- -- -- 16 -- -- -- -- -- 83 -- -- 100 -- 20 20 28 -- 60 9 35 20 86 2.32 65 200 -- 60 75 40 50 100 14 70 50 --
mA pp %
-- -- -- -- -- -- -- -- --
10 1.5 500 1.5 250 200 3.5 0 --
14 4 600 3.0 400 300 6 50 1000
-- -- -- -- -- -- -- -- --
7 1.0
14 4
W ms mV pk ms mV pk s ms mV pk F
800 1400 1.5 250 200 3.5 0 -- 3.0 800 400 6 100 1000
START-UP6 COUT
Notes 1. Guaranteed by design, not tested. 2. MFL2828S specifiications are at 25Tc. 3. Unit will shut down above approximately 45V but will be undamaged and will restart when voltage drops into normal range. 4. Recovery time is measured from application of the transient to point at which Vout is within 1% of final value.
5. Transition time > 10 s. 6. Tested on release from inhibit. 7. Shall not compromise DC performance
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Page 7 of 13 Rev D - 20060601
Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converters
28 VOLT INPUT - 65 WATT
Electrical Characteristics: -55C to +125 C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
DUAL OUTPUT MODELS PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT2 VIN = 16 TO 40 VDC OUTPUT POWER2 OUTPUT RIPPLE VOLTAGE +/- VOUT LINE REGULATION VIN = 16 TO 40 VDC LOAD REGULATION NO LOAD TO FULL CROSS REGULATION Tc = 25C INPUT VOLTAGE NO LOAD TO FULL INPUT CURRENT 10 kHz - 2 MHz +VOUT -VOUT +VOUT -VOUT SEE NOTE 3 SEE NOTE 4 CONTINUOUS TRANSIENT1, 5 50 ms. NO LOAD INHIBITED - INH1 INHIBITED - INH2 10 kHz - 10 MHz BALANCED LOAD POWER DISSIPATION SHORT CIRCUIT Tc = 25C RECOVERY1 STEP LOAD RESP. VOUT STEP LINE RESP. VOUT START-UP8 COUT 50 %-100%- 50% LOAD TRANSIENT RECOVERY1, 6 16 - 40 - 16 VIN TRANSIENT1, 7 RECOVERY1, 6 DELAY OVERSHOOT1 Tc=25C1,9 -- -- -- -- -- -- -- 16 0 -- -- -- -- 77 50 0 25 0 25 5 3 28 -- 50 9 35 15 80 100 50 100 50 100 8 6 40 50 120 14 70 50 -- -- -- -- -- -- -- -- 16 0 -- -- -- -- 83 50 0 25 10 50 2 2 28 -- 50 9 35 15 86 120 50 100 50 120 4 4 40 50 100 14 70 50 -- -- -- -- -- -- -- -- 16 0 -- -- -- -- 84 50 0 25 10 50 2 2 28 -- 50 9 35 15 87 150 50 100 50 150 4 4 40 50 100 14 70 50 -- mV % VDC V mA mA mA p-p % mV p-p mV MFL2805D MIN TYP MAX 4.95 5.00 5.05 4.92 5.00 5.08 0 0 0 -- -- -- 7 10 50 MFL2812D MIN TYP MAX 11.88 12.00 12.12 11.82 12.00 12.18 0 0 0 -- -- -- 3.5 5 60 MFL2815D MIN TYP MAX 14.85 15.00 15.15 14.77 15.00 15.23 0 0 0 -- -- -- 3.03 4.34 65 W
CONDITIONS +VOUT Tc = 25C -VOUT EACH OUTPUT TOTAL OUTPUT VIN = 16 TO 40 VDC
UNITS VDC A
INPUT RIPPLE CURRENT EFFICIENCY 25C Tc LOAD FAULT
-- -- -- -- -- -- -- -- --
12.5 1.5 250 1.5 250 200 3.5 0 --
16 4.0 350 3.0 300 300 6 25 500
-- -- -- -- -- -- -- -- --
10 1.5 450 1.5 250 200 3.5 0 --
14 4.0 600 3.0 400 300 6 50 500
-- -- -- -- -- -- -- -- --
10 1.5 500 1.5 250 200 3.5 0 --
14 4.0 600 3.0 400 300 6 50 500
W ms mV pk ms mV pk s ms mV p F
Notes 1. Guaranteed by design, not tested. 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 power. 3. Effect on negative Vout from 50%/50% loads to 70%/30% or 30%/70% loads. 4. Effect on negative Vout from 50%/50% loads to +Pout=50%, -Pout=10%. 5. Unit will shut down above approximately 45V but will be undamaged and will restart when voltage drops into normal range. 6. Recovery time is measured from application of the transient to point at which Vout is within 1% of final value. 7. Transition time > 10 s. 8. Tested on release from inhibit. 9. Shall not compromise DC performance
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Page 8 of 13 Rev D - 20060601
Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converters
28 VOLT INPUT - 65 WATT
Typical Performance Curves: 25C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
90 85 16V
90 85
16V
90 85
16V
Efficiency (%)
Efficiency (%)
Efficiency (%)
80 75
28V
80 75 70 65
28V
80 75 70 65 40V
28V
40V 70 65 60 10 20 30 40 50
40V
Output (Watts)
60 10
20
30
40
50
60
60 10
20
30
40
50
60 65
Output Power (Watts)
Output Power (Watts)
MFL2805S & MFL2805D Efficiency
MFL2812S & MFL2812D Efficiency
MFL2815S & MFL2815D Efficiency
FIGURE 4
FIGURE 5
FIGURE 6
90 16 VIN 85 80 75 70 65 60 0 10 20 30 40 50 60 70 40 VIN 28 VIN
0. 20.
Attenuation (dB)
Efficiency (%)
100mV/div. 20V/div.
Vout
40. 60. 80.
Vin
100. 0.1
1
10
100
Output Power (Watts)
Frequency (kHz)
MFL2828S Efficiency
MFL Series Audio Rejection
50 s/div 16 to 40 V
MFL2805S Step Line Response
FIGURE 7
FIGURE 8
FIGURE 9
100% to 50%
20V/div.
Vin
20V/div. 100mV/div.
1ms/div No Load
Vin +Vout
100mV/div.
1V/div.
50% to 100%
Vout
-Vout
1ms/div
MFL2805S Step Load Response
MFL2805S Turn On Response
50 s/div 16 to 40 V
MFL2815D Step Line Response
FIGURE 10
FIGURE 11
FIGURE 12
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Page 9 of 13 Rev D - 20060601
Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converters
28 VOLT INPUT - 65 WATT
Typical Performance Curves: 25C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
8
20V/div.
50% to 100%
-Vout Voltage Change (%)
-Pout = 32.5W
6 4 2 0 -2 -4 -6 -8 30 40 50 60 70 MFL2805D MFL2812D MFL2815D
VIN
+Vout
200mV/div.
100% to 50%
5V/div.
-Vout
1ms/div
MFL2815D Step Load Response
1ms/div No Load
MFL2815D Turn On Response
Output Load (%) +Pout 80 to 20 %, -Pout 20 to 80%
Cross Regulation
FIGURE 13
FIGURE 14
FIGURE 15
16
Input Voltage (Volts)
15 14 13
MFL2815S & 15D
MFL2805S & 5D 12 MFL2812S & 12D 11 10 20 30 40 50 60 65
Output Power (Watts)
Low Line Dropout
FIGURE 16
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Page 10 of 13 Rev D - 20060601
Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converter Cases
28 VOLT INPUT - 65 WATT
TOP VIEW CASE U Flanged case, short-leaded
*Does not require designator in Case Option position of model number.
Seam Seal
0.23 (5.8) Lead Length 0.128 dia (3.25). 0.040 dia (1.02) 1 2 3 4 5 6 12 11 10 9 8 7
Angled corner indicates pin one. 1.505 (38.23) max. 1.380 (35.05) 1.250 (31.75) 1.050 (26.67) 0.850 (21.59) 0.650 (16.51) 0.450 (11.43) 0.250 (6.35) 0.120 (3.05) 0.000
0.400 (10.16) max.
0.000
2.750 (69.85)
Seal hole: 0.100 0.002 (2.54 0.05)
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 300C for 10 seconds per pin Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins #52 alloy/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 (c) 1999-2006 Interpoint Corp. All rights reserved.
FIGURE 17: CASE U
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2.880 (73.15) 3.005 (76.33) max.
0.050 (1.27) 0.000
0.120 (3.05) 0.250 (6.35)
0.220 (5.59
Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converters
28 VOLT INPUT - 65 WATT
883, CLASS H, QML PRODUCTS - ELEMENT EVALUATION
ELEMENT EVALUATION TEST PERFORMED (COMPONENT LEVEL) Element Electrical (probe) Element Visual Internal Visual Final Electrical Wire Bond Evaluation4 SLAMTM/C-SAM: Input Capacitors only (Add'l test, not req. by H or K) STANDARD (NON-QML)1 M/S2 P3 yes no no no no no no no no no no no CLASS H, QML 2 M/S P3 yes yes yes yes yes no yes yes no yes yes yes
Definitions: Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534 SLAMTM: Scanning Laser Acoustic Microscopy C-SAM: C - Mode Scanning Acoustic Microscopy Notes: 1. Non-QML products do no meet all of the requirements of MIL-PRF-38534 2. M/S = Active components (Microcircuit and Semiconductor Die) 3. P = Passive components 4. Not applicable to EMI filters that have no wire bonds
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Page 12 of 13 Rev D - 20060601
Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converters
28 VOLT INPUT - 65 WATT
883, CLASS H, QML PRODUCTS - ENVIRONMENTAL SCREENING
TEST 125C STANDARD non-QML 125C /ES non-QML Class H /883 QML
Pre-cap Inspection Method 2017, 2032 Temperature Cycle (10 times) Method 1010, Cond. C, -65C to 150C, ambient Method 1010, Cond. B, -55C to 125C, ambient Constant Acceleration Method 2001, 3000 g Method 2001, 500g Burn-In Method 1015, 160 hours at 125C case, typical 96 hours at 125C case, typical Final Electrical Test MIL-PRF-38534, Group A Subgroups 1 through 6: -55C, +25C, +125C case Subgroups 1 and 4: +25C case Hermeticity Test Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Gross Leak, Dip (1 x 10-3) Final Visual Inspection Method 2009
yes
yes
yes
no no
no yes
yes no
no no
no yes
yes no
no no
no yes
yes no
no yes
no yes
yes no
no no yes
yes yes no
yes yes no
yes
yes
yes
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534.
MFL Single and Dual Rev D - 20060601. 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. MFL Series is a trademark of Interpoint. Copyright (c) 1999 - 2006 Interpoint Corporation. All rights reserved. www.craneae.com
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