Crane Aerospace & Electronics Power Solutions
smFlHp single and dual dc/dc converters
28 Volt input – 100 Watt
Features
Parallel operation with current share, up to 3 units (228 watts) • -55° to +125°C operation • 19 to 40 VDC input
• 50 V for 120 ms transient protection • Fully isolated, magnetic feedback • Fixed high frequency switching • Inhibit function
• Remote sense or output trim on single output models • Synchronization input and output • Indefinite short circuit protection • High power density with up to 87% efficiency models
VDC Output SINgLE 3.3 5 12 15 DuAL ±5 ±12 ±15
description
The SMFLHP Series™ 28 volt DC/DC converters are rated up to 100 watts output power over a –55°C to +125°C 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 outputs. Current sharing allows the units to be paralleled for total power of up to 228 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 67 watts per cubic inch.
Tight load regulation is achieved through a wide-bandwidth magnetic feedback circuit. The output voltage on single SMFLHP models can be easily trimmed up by adding an external resistor. (See Figure 2 for voltage changes with different resistor values.)
inhibit
Screening
SMFLHP converters offer screening options to Space Prototype (O), Class H, or Class K. Radiation tolerant to Radiation Hardness Assurance (RHA) levels of “-” (O), “P” or “R”, per MILSTD-38534. Interpoint model numbers use an “O” in the RHA designator position to indicate the “-” (dash) Radiation Hardness Assurance level of MIL-PRF-38534, which is defined as “no RHA”. See “Class H and K, QML Screening” tables for more information.
The SMFLHP Series converters have two inhibit terminals (INH1 and INH2) that can be used to disable power conversion, resulting in a very low quiescent input current. A low (10 µs.
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Page 7 of 13 Rev H - 20071221
Crane Aerospace & Electronics Power Solutions
smFlHp single and dual dc/dc converters
28 Volt input – 100 Watt
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
90 85 19V 28V 40V
90 85
19V
90 85
19V
Efficiency (%)
Efficiency (%)
Efficiency (%)
80 75 70 65 60 10 30
80 75 70 65 40V
28V
80 75 70 65 40V
28V
SMFLHP2805S & SMFLHP2805D Efficiency
Output (Watts)
50
70
90
60 10
Figure 4
SMFLHP2812S & SMFLHP2812D Efficiency
Output Power (Watts)
30
50
70
90
60 10
Figure 5
SMFLHP2815S & SMFLHP2815D Efficiency
Output Power (Watts)
30
50
70
90 100
Figure 6
0. 20.
Attenuation (dB)
100mV/div.
100% to 50%
40. 60. 80.
20V/div.
100mV/div.
Vout
Vin
50% to 100%
100. 0.1
SMFLHP Series Audio Rejection
Frequency (kHz)
1
10
100
SMFLHP2805S Step Line Response
50 µs/div 19 to 40 V
SMFLHP2805S Step Load Response
1ms/div
Figure 7
Figure 8
Figure 9
20V/div.
20V/div.
Vin
Vin +Vout
50% to 100%
1V/div.
Vout
100mV/div.
–Vout
200mV/div.
100% to 50%
SMFLHP2805S Turn On Response
1ms/div No Load
SMFLHP2815D Step Line Response
50 µs/div 19 to 40 V
SMFLHP2815D Step Load Response
1ms/div
Figure 10
Figure 11
Figure 12
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Page 8 of 13 Rev H - 20071221
Crane Aerospace & Electronics Power Solutions
smFlHp single and dual dc/dc converters
28 Volt input – 100 Watt
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
8
19
–Vout Voltage Change (%)
6 4 2 0 –2 –4 –6 –8 30 40
20V/div.
Input Voltage (Volts)
VIN
+Vout
SMFLHP2805D
SMFLHP2805S & 5D 18 SMFLHP2815S & 15D 17
SMFLHP2812D SMFLHP2815D
5V/div.
–Vout
SMFLHP2812S & 12D 50 60 70 16 30 40 50 60 70 80 90 100
SMFLHP2815D Turn On Response
1ms/div No Load
Output Load (%) +Pout 70 to 30 %, –Pout 30 to 70%
Output Power (Watts)
Cross Regulation
Low Line Dropout
Figure 13
Figure 14
Figure 15
Line Transient Response mVp
700 600 500 400 300 200 100 0
10
25°C 100°C 125°C
-55°C
Vin Rise-time (µs)
100
1000
10000
SMFLHP2815D Line Transient Response vs. Vin Rise-time
Figure 16
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Page 9 of 13 Rev H - 20071221
Crane Aerospace & Electronics Power Solutions
smFlHp single and dual dc/dc converter cases
28 Volt input – 100 Watt
TOP VIEW CASE U Flanged case, short-leaded
*Case U does not require designator in Case Option position of model number.
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 0.000 1 2 3 4 5 6 12 11 10 9 8 7
0.23 (5.8) Lead Length
0.128 dia (3.25). 0.040 dia (1.02)
Seam Seal
0.400 (10.16) max.
2.750 (69.85)
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/Nickel/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 © 1999-2006 Interpoint Corp. All rights reserved.
Figure 16: caSe u
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Page 10 of 13 Rev H - 20071221
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
smFlHp single and dual dc/dc converters
28 Volt input – 100 Watt
Class H and K, MIl-PRF-38534 ElEMEnt EvaluatIon
COmpOnent-level test perfOrmed
spaCe prOtOtype (O) nOn-Qml1 M/s2 P3
no no N/A no no N/A N/A N/A N/A no no no no N/A no yes no no no no no no no no N/A no no no no no yes yes yes no no no no no no N/A N/A yes yes no no
Class h Qml M/s2 P3
yes yes N/A no no N/A N/A N/A N/A no no yes yes N/A yes
Class k Qml M/s2
yes yes yes yes yes yes yes yes yes N/A N/A yes yes yes no
P3
yes yes N/A yes yes N/A N/A N/A N/A yes yes yes yes N/A yes
Element Electrical Element Visual Internal Visual Temperature Cycling Constant Acceleration Interim Electrical Burn-in Post Burn-in Electrical Steady State Life Voltage Conditioning Aging Visual Inspection Final Electrical Wire Bond Evaluation4 SEM SLAM™/C-SAM: Input capacitors only (Add’l test, not req. by H or K)
Notes: 1. Non-QML products do not 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 wirebonds. Definitions: Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534 SEM: Scanning Electron Microscopy SLAM™: Scanning Laser Acoustic Microscopy C-SAM: C - Mode Scanning Acoustic Microscopy
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Page 11 of 13 Rev H - 20071221
Crane Aerospace & Electronics Power Solutions
smFlHp single and dual dc/dc converters
28 Volt input – 100 Watt
Class H and K, MIl-PRF-38534 EnvIRonMEntal sCREEnIng
end item-level test perfOrmed Non-destruct bond pull Method 2023 Pre-cap Inspection Method 2017, 2032 Temperature Cycle (10 times) Method 1010, Cond. C, -65°C to 150°C, ambient Constant Acceleration Method 2001, 3000 g PIND Test Method 2020, Cond. A Pre burn-in test Burn-in Method 1015, 125°C case, typical 96 hours 160 hours 2 x 160 hours (includes mid-BI test) Final Electrical Test MIL-PRF-38534 Group A, Subgroups 1 through 6 -55°C, +25°C, +125°C case Radiography Method 2012 Post Radiography Electrical Test Room temperature Hermeticity Test Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Final visual inspection Method 2009
spaCe prOtOtype (O) nOn-Qml1
no yes
Class h Qml
yes2 yes
Class k Qml
yes yes
yes yes no yes
yes yes yes2 yes
yes yes yes yes
yes no no
no yes no
no no yes
yes N/A N/A yes yes yes
yes N/A N/A yes yes yes
yes N/A yes2 yes yes yes
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. Space Prototype (O), non-QML products, do not meet all of the requirements of MIL-PRF-38534. 2. Not required by DSCC but performed to assure product quality.
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Page 12 of 13 Rev H - 20071221
Crane Aerospace & Electronics Power Solutions
smFlHp single and dual dc/dc converters
28 Volt input – 100 Watt
Class H and K, MIl-PRF-38534 RadIatIon assuRanCE
EnvIRonMEntal sCREEnIng lEvEls RadIatIon HaRdnEss
assuRanCE lEvEls
sPaCE PRototYPE (o) non-QMl2
OO
Class H QMl
HO
Class K QMl
N/A
O1: Standard, no radiation guarantee
p: Radiation tolerant–Tested lots up to 30 K Rads (Si) total dose SEU guarantee up to 40 MeV r: Radiation tolerant–Tested lots up to 100 K Rads (Si) total dose SEU guarantee up to 40 MeV
N/A
HP3
N/A
N/A
HR3
KR3
Notes: 1. Interpoint model numbers use an “O” in the RHA designator position to indicate the “-” (dash) Radiation Hardness Assurance level of MIL-PRF-38534, which is defined as “no RHA”. 2. Space Prototype (O), non-QML, products do not meet all of the requirements of MIL-PRF-38534. 3. Redmond site, Interpoint, has a Radiation Hardness assurance plan on file with DSCC. Our SMD products with RHA “P" and "R" code meet DSCC requirements.
SMFLHP Single and Dual, Rev H - 20071221. 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. SMFLHP Series is a trademark of Interpoint. Copyright © 1999 - 2007 Interpoint Corporation. All rights reserved. www.craneae.com
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