SMRT28515T [CRANE]

Built in MIL-STD-461 EMI filter Output trim from 51% to 124% of nominal; 内置的MIL -STD- 461的EMI滤波器输出调整从51%到标称124%
SMRT28515T
型号: SMRT28515T
厂家: Crane Aerospace & Electronics.    Crane Aerospace & Electronics.
描述:

Built in MIL-STD-461 EMI filter Output trim from 51% to 124% of nominal
内置的MIL -STD- 461的EMI滤波器输出调整从51%到标称124%

文件: 总19页 (文件大小:800K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
Features  
Bꢀilꢁ in MIL-stD-461 eMI filꢁꢂꢃ  
Oꢀꢁpꢀꢁ ꢁꢃim fꢃom 51% ꢁo 124% of nominꢄl  
•ꢀ Operating temperature -55° to +125°C  
•ꢀ Qualified to MIL-PRF-38534 Class H and K  
•ꢀ Radiation hardness assurance (RHA) to  
level F 300 kRad(Si)  
•ꢀ Input voltage range 19 to 56 VDC  
•ꢀ Transient protection 80 V for 100 ms  
•ꢀ Fully isolated, 5 port isolation  
•ꢀ Dual magnetic feedback  
•ꢀ Fixed high frequency switching  
•ꢀ Remote sense  
•ꢀ Inhibit function  
•ꢀ Synchronization input  
MODELS  
VDC Ou t p u t  
•ꢀ Indefinite short circuit protection  
•ꢀ Radiation tolerant to  
SIꢀꢁLE  
3.3  
5
DUAL  
±5  
±12  
±15  
- 1 x 1012 protons/cm2 neutron or proton fluence  
- 1011 rad(Si)/sec dose rate  
8.7  
12  
15  
- 3 x 105 rad(Si) total dose  
- SEE - LET to 80 MeV cm2/mg  
TRIPLE  
+3.3 & ±12  
+3.3 & ±15  
+5 & ±7  
•ꢀ Meets MIL-STD-704A transient standards  
+5 & ±12  
+5 & ±15  
DescrIꢅtIOꢆ  
A minimum load of 2% of full load should be used on outputs at  
TID of 100 kRad(Si) or greater to ensure tight regulation over the  
full input range. The converter should not be inhibited or oper-  
ated below 19 Vin above 5x104 rad(Si) total dose.  
The SMRT28 Series™ of DC/DC converters offers up to 35  
watts of power in a radiation tolerant design. The low profile  
SMRT28 converters are manufactured in Interpoint’s fully certi-  
fied and qualified MIL-PRF-38534 production facility and pack-  
aged in hermetically sealed steel cases. They are ideal for use in  
programs requiring high reliability, small size, and high levels of  
radiation hardening assurance.  
Two independent feedback loops are used to regulate the dual  
and triple outputs, one feedback loop regulates the two-phased  
single output. Each set of outputs is electrically isolated from the  
other and from the input. This product configuration eliminates  
cross regulation effects between output sets.  
The SMRT28 converters are switching regulators which use a  
two-phase, phase shifted flyback design with a nominal switching  
frequency of 300 kHz. Close regulation is maintained with  
advanced constant frequency pulse width modulation design  
techniques. The SMRT28’s feed-forward compensation and  
discontinuous topologies provide high levels (80 dB peak) of  
input-to-output ripple rejection.  
Configurations:  
•ꢀSingleꢀOutput:ꢀOneꢀtwo-phaseꢀsingleꢀoutput  
•ꢀDualꢀOutput:ꢀTwoꢀsingle-phaseꢀsingleꢀoutputs  
•ꢀTripleꢀOutput:ꢀOneꢀsingle-phaseꢀindependentꢀ  
Main output and one single-phase dual output.  
(± Auxiliary output)  
Crane Aerospace & Electronics  
Page 1 of 19  
Electronics ꢁroup (Interpoint Brand)  
POꢀBoxꢀ97005ꢀꢀ•ꢀꢀRedmondꢀWAꢀ98073-9705  
425.882.3100ꢀꢀꢀ•ꢀꢀꢀpower@crane-eg.com  
www.interpoint.com  
SMRT28 Rev E - 20100216  
The information in this document is a derivative of a document cleared  
by the Department of Defense (DoD) Office of Security Review (OSR) for  
public release. OSR case number 09-S-1960 dated June 22, 2009.  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
At the highest dose rate (1011 rad(Si)/sec dose rate) there will be  
an upset resulting in a dip in the voltage. This is non-destructive  
to the unit. The converter will operate through the upset.  
un D e r V O l t a g e lO C k O u t  
The converters have an undervoltage lockout that will allow  
power conversion at approximately 17 volts on a rising input  
voltage and a conversion shut-down on a falling voltage at  
approximately 14.5 volts.  
SC r e e n I n g  
SMRT28 converters offer the following screening options:  
Space Prototype (O), Class H, or Class K. Radiation tolerant to  
Radiation Hardness Assurance (RHA) levels of “-” (O), “P”, “R” or  
“F”, per MIL-PRF-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 Screening Tables 1, 2 and 3 for more information.  
In h I b I t Fu n C t I O n  
The SMRT28 Series incorporates an inhibit terminal that can be  
used to disable internal switching. It is not recommended to tie  
the Inhibit pin of an SMRT28 directly to the Inhibit pin of another  
converterꢀasꢀtheꢀSMRT28ꢀInhibitꢀpinꢀcanꢀsinkꢀcurrent.ꢀWhenꢀ  
pulling multiple inhibit signals low a separate interface is recom-  
mended for each SMRT28. The converter is inhibited when the  
inhibit pin is pulled low (0.4 V). In the inhibit mode the inhibit pin  
current requirement is less than ~2 mA. The converter resumes  
normalꢀoperationꢀwhenꢀaꢀhighꢀ(≥ꢀ2.4ꢀV)ꢀsignalꢀorꢀopenꢀcircuitꢀisꢀ  
applied to the inhibit pin. The open circuit voltage of the inhibit is  
5 to 6 volts. Although open circuit is the preferred method for the  
enabled state, up to 10 volts may be applied to the inhibit pin.  
emI  
The SMRT28 has a built-in EMI input filter which brings the  
conducted emissions into compliance with both methods of  
MIL-STD-461, revisions C-CE03 and D-/E-/F-CE102.  
Se n S e  
Tight load regulation is maintained via wide bandwidth magnetic  
feedback and through the use of remote sense on single output  
models and one output (Output “A”) of the dual units. The sense  
feature can be used to adjust the output voltage by connecting a  
resistor between the positive sense line and the positive output.  
Sy n C h r O n I z a t I O n  
The Sync Input is isolated which allows Sync Return to be tied to  
the primary side, secondary side, or float with respect to all inputs  
and outputs. Input current into this pin is limited by a series 1 k  
ohm resistance.  
Se n S e Ad j u S t In S t r u c t I o n S f o r  
ou t p u t A o n du A l Mo d e l S  
Ad j u S t up on l y  
(sꢂꢂ ꢁꢃim ꢁꢄblꢂꢈ on pꢄgꢂ 4 foꢃ moꢃꢂ opꢁionꢈ)  
Ou t p u t VO l t a g e tr I m  
The output voltage of each set can be trimmed from 51% to  
125% of nominal (varies by model, see trim instructions on page  
4). The following are “sets” of voltages in relation to trim:  
•ꢀTripleꢀoutputꢀmodels:ꢀMainꢀoutputꢀisꢀoneꢀset,ꢀtheꢀdualꢀoutputsꢀ  
are another set.  
•ꢀDualꢀoutputs:ꢀEachꢀoutputꢀisꢀaꢀ“set.”  
One set can be trimmed using the trim pin, the other set can  
be trimmed (up only) using the positive sense pin.  
•ꢀSingle:ꢀOneꢀset  
Vout - Vnom  
Vmax - Vout  
RaD j u S t = 240  
(
)
Vout = desired output voltage  
Vnom = nominal unadjusted output voltage  
Vmax = maximum achievable output voltage  
5V Vmax = 6.0 V  
12V Vmax = 14.68 V  
15V Vmax = 18.36V  
ra D I a t I O n tO l e r a n C e  
The SMRT28 DC/DC converters are designed to provide contin-  
uous normal operation through radiation levels associated with  
space missions and in tactical and strategic military environ-  
ments. The converters will operate normally in radiation environ-  
ments with up to 1 x 1012 neutrons per square centimeter neutron  
fluence, 1011 rad(Si) per second dose rate, and 3x105 rad(Si)  
total dose.  
ꢀote: RADJUST should be connected  
between Sense A (pin 8) and Vout A (pin 11).  
These levels of radiation tolerance make the SMRT28 converters  
suitable for electronics in programs where operation in high radia-  
tion environments is required.  
www.interpoint.com  
Page 2 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
convꢂꢃꢈion Fꢃꢂꢉꢀꢂnꢇy  
Operating COnditiOns and CharaCteristiCs  
•ꢀ 300 kHz typ 270 kHz min, 330 kHz max  
Inpꢀꢁ Volꢁꢄgꢂ rꢄngꢂ  
rꢄdiꢄꢁion (will opꢂꢃꢄꢁꢂ ꢁhꢃoꢀgh)  
•ꢀ 1x1012 neutrons/cm2 neutron or proton fluence  
•ꢀ Radiation dose rate 1011 rad(Si) /sec  
•ꢀ Total dose up to 300 kRad(Si)  
•ꢀ 19 to 56 VDC continuous  
•ꢀ 80 V for 100 ms transient  
Oꢀꢁpꢀꢁ ꢅowꢂꢃ  
•ꢀ Up to 35 watts depending on model  
•ꢀ SEE - LET to 80 MeV cm2/mg  
Lꢂꢄd soldꢂꢃing tꢂmpꢂꢃꢄꢁꢀꢃꢂ (10 ꢈꢂꢇ pꢂꢃ pin)  
•ꢀ 300°C  
synC and inhibit  
sꢁoꢃꢄgꢂ tꢂmpꢂꢃꢄꢁꢀꢃꢂ rꢄngꢂ (cꢄꢈꢂ)  
•ꢀ -65°C to +150°C  
synꢇ  
•ꢀInput frequency 270-330 kHz  
•ꢀ Duty cycle 20% min, 80% max  
•ꢀ 2.5 V p-p minimum amplitude  
•ꢀ 10 V p-p maximum amplitude  
•ꢀ Sync circuit is floating and isolated  
•ꢀ If sync is used at lower end of the range, full load  
operation is not guaranteed.  
cꢄꢈꢂ Opꢂꢃꢄꢁing tꢂmpꢂꢃꢄꢁꢀꢃꢂ (tꢇ)  
•ꢀ -55°C to +125°C full power  
•ꢀ -55°C to +135°C absolute  
Dꢂꢃꢄꢁing Oꢀꢁpꢀꢁ ꢅowꢂꢃ/cꢀꢃꢃꢂnꢁ  
•ꢀ Linearly from 100% at 125°C to 0% at 135°C  
ꢅowꢂꢃ Diꢈꢈipꢄꢁion (ꢅd)  
•ꢀ20ꢀtoꢀ31ꢀW  
Inhibiꢁ  
•ꢀ Active low (output disabled)  
IꢀH referenced to input common  
Active low, pulled to 0.4 V or lower  
Inhibit pin current < 2mA  
•ꢀ Active high (output enabled)  
High >2.4V  
Oꢀꢁpꢀꢁ Volꢁꢄgꢂ tꢂmpꢂꢃꢄꢁꢀꢃꢂ coꢂffiꢇiꢂnꢁ  
•ꢀ 100 ppm/°C max  
cꢀꢃꢃꢂnꢁ Limiꢁ  
•ꢀ 125% of full load typical  
Iꢈolꢄꢁion ꢄꢁ 25°c  
•ꢀ 100 megohm minimum at 500 V  
ꢀot to exceed 10V  
Open pin voltage 5 to 6 volts  
aꢀdio rꢂjꢂꢇꢁion  
•ꢀ 50 dB typical  
meChaniCal and envirOnmental  
sizꢂ (mꢄximꢀm)  
sꢇꢃꢂꢂning  
•ꢀ2.705 x 2.205 x 0.400 inches (68.71 x 56.01 x 10.16 mm)  
See case S for dimensions.  
Space Prototype, Class H, or Class K are radiation tolerant  
to Radiation Hardness Assurance (RHA) levels of “-” (O), “P”,  
“R”, or “F” per MIL-PRF-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”.  
Wꢂighꢁ (mꢄximꢀm)  
•ꢀ 100 grams maximum  
See Screening Tables 1, 2 and 3 for more information. Available  
configurations: OO, HP, HR, KP, KR, KF  
www.interpoint.com  
Page 3 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
trIM taBLes  
tr I m up  
tr I m D O w n  
Singles  
Singles  
Rt r I m should be connected between the tꢃim pin and ꢅoꢈiꢁivꢂ sꢂnꢈꢂ pin.  
Rt r I m should be connected between the tꢃim pin and sꢂnꢈꢂ rꢂꢁꢀꢃn pin.  
Duals  
Duals  
Rt r I m should be connected between the tꢃim B pin and ꢅoꢈiꢁivꢂ Voꢀꢁ B  
pin. This only trims output B, output A can use the sense pin to trim up  
only. See page 2 for instructions on trimming up output A.  
Rt r I m should be connected between the tꢃim B pin and Voꢀꢁ B rꢂꢁꢀꢃn pin.  
This only trims output B, output A can use the sense pin to trim up only.  
Triples  
Triples  
Rt r I m should be connected between the tꢃim a pin and Voꢀꢁ a rꢂꢁꢀꢃn pin  
Rt r I m should be connected between the tꢃim a pin and ꢅoꢈiꢁivꢂ Voꢀꢁ  
to adjust the Main outputs.  
a pin to adjust the Main output.  
Rt r I m should be connected between the tꢃim B pin and Voꢀꢁ B rꢂꢁꢀꢃn pin  
Rt r I m should be connected between the tꢃim B pin and ꢅoꢈiꢁivꢂ Voꢀꢁ  
to adjust the Auxiliary outputs.  
B pin to adjust the Auxiliary outputs.  
Vmax - Vout  
Vout - Vnom  
Rt r I m = K (  
)
Vout - Vmin  
Vnom - Vout  
Rt r I m = K (  
)
Vout = Desired Voltage; K/Vmax/Vnom from table below.  
Vout = Desired Voltage; K/Vmin/Vnom from table below.  
VꢀOM  
K
VMAX  
% OF VꢀOM  
VꢀOM  
K
VMIꢀ  
% OF VꢀOM  
3.3  
5.0  
7.0  
8.7  
12  
3000  
3000  
5300  
5300  
5300  
5300  
3.70  
6.26  
112  
125  
118  
149  
122  
124  
3.3  
5.0  
7.0  
8.7  
12  
3500  
4520  
3.18  
4.16  
5.47  
6.13  
7.05  
7.65  
96  
83  
78  
70  
58  
51  
8.27  
8020  
10.46  
14.69  
18.54  
9040  
11030  
12900  
15  
15  
ꢀote: Do not exceed maximum power rating when trimming up.  
ꢀote: Do not exceed maximum current rating when trimming down,  
1
2
3
4
5
14  
13  
1
2
3
4
5
14  
13  
Trim 12  
11  
Trim 12  
SMRT Single  
SMRT Single  
11  
10  
9
10  
Sense Return  
9
8
Sense  
8
1
2
3
4
5
Vout B Return 14  
13  
Trim B 12  
1
2
3
4
5
14  
SMRT Dual  
11  
10  
9
Vout B 13  
Trim B 12  
SMRT Dual  
11  
10  
9
8
8
1
2
3
4
5
14  
Vout A 13  
Trim A 12  
1
2
3
4
5
14  
Vout A Return 13  
Trim A 12  
SMRT Triple  
11  
10  
9
+Vout B  
SMRT Triple  
11  
Vout B Return 10  
9
Trim B  
8
Trim B  
8
FI g u r e 1: tr I m DO w n DI a g r a m S  
FI g u r e 2: tr I m up DI a g r a m S  
www.interpoint.com  
Page 4 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
ꢅIꢆ Out  
ꢅin  
1
singlꢂ Oꢀꢁpꢀꢁ  
Vin  
Dꢀꢄl Oꢀꢁpꢀꢁ  
Vin  
tꢃiplꢂ Oꢀꢁpꢀꢁ  
Vin  
2
Vin Return  
Inhibit  
Vin Return  
Inhibit  
Vin Return  
Inhibit  
3
4
Sync In  
Sync In  
Sync In  
5
Sync Return  
Sense  
Sync Return  
Sense A  
Sync Return  
Trim B  
8
9
Sense Return  
Vout A Return  
Vout A  
Sense A Return  
Vout A Return  
Vout A  
Vout B ꢀegative  
Vout B Return  
Vout B Positive  
Trim A  
10  
11  
12  
13  
14  
Trim  
Trim B  
Vout A  
Vout B  
Vout A  
Vout A Return  
Vout B Return  
Vout A Return  
1
2
3
4
5
14  
13  
12  
11  
10  
9
TOP VIEW  
See case S for dimensions.  
8
FI g u r e 3: pIn Ou t  
ꢅIꢆs ꢆOt Iꢆ use  
Inhibit: single, dual and triple  
Sync In  
Leave unconnected  
Connect to Sync Return  
Sense Lines  
Must be connected to appropriate outputs  
Leave unconnected  
Trim (all)  
www.interpoint.com  
Page 5 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
MODeL ꢆuMBerIꢆꢊ keꢋ  
sMD ꢆuMBers  
St A n d A r d MI c r o c I r c u I t  
dr A w I n g (SMd)  
SMrt28 SIMIlAr pA r t  
SMRT 28 515 T / K  
F
Base Model  
Input Voltage  
Output Voltage  
5962F0622001KXC  
5962F0622101KXC  
5962F0821001KXC  
5962F0622201KXC  
5962F0622301KXC  
5962F0720201KXC  
5962F0622401KXC  
5962F0821101KXC  
5962F0821201KXC  
5962F0622501KXC  
5962F0622601KXC  
SMRT283R3S/KF  
SMRT2805S/KF  
SMRT2812S/KF  
SMRT2815S/KF  
SMRT2805D/KF  
SMRT2812D/KF  
SMRT2815D/KF  
SMRT283R312T/KF  
SMRT283R315T/KF  
SMRT28512T/KF  
SMRT28515T/KF  
(single or dual Vout for single or dual models  
main and aux. Vout for triple models)  
Number of Outputs  
(S=single, D=dual, T=triple)  
Screening  
Radiation Hardness  
Assurance (RHA)  
The SMD number shown is for Class K screening and  
Radiation Hardness Assurance (RHA) level F. See the  
SMD for the numbers for other screening and radiation  
levels. 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 seLectIOꢆ  
on t h e l I n e S b e l o w , e n t e r o n e S e l e c t I o n f r o M e A c h c A t e g o r y to d e t e r M I n e t h e M o d e l n u M b e r .  
_______  
sMrt28  
/
cateꢊOrꢋ  
seLectIOꢆ  
1
2
3
4
Base Model and  
Input Voltage  
Output Voltage  
ꢀumber of Outputs  
Screening  
RHA  
3r3, 05, 12, 15  
05, 12, 15  
s
D
t
O
H
k
O
r
F
SMRT28 is the only  
available selection  
3r312, 3r315, 512, 515  
ꢀotes:  
1. Output Voltage: An R indicates a decimal point. 3R3 is 3.3 volts out. The 3R3 output voltage is only available in single and triple output models. The 3R312  
and 3R315 triple output converters are +3.3 volt main and ±12 or ±15 volt auxiliaries. 512 and 515 triple output converters are +5 volt main and ±12 or ±15 volt  
auxiliaries.  
2. ꢀumber of Outputs: S is a single output, D is a dual output, and T is a triple output  
3. Screening: A screening level of O is a Space Prototype and is only used with RHA O. See Screening Tables 2 and 3 for more information.  
4. RHA: 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.” RHA O is only available with Screening level O. See Screening Table 3 for more information.  
www.interpoint.com  
Page 6 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
Electrical Characteristics: -55°C to +125°C T , 28 VDC Vin, 100% load, unless otherwise specified.  
C
SIꢀꢁLE OUTPUT MODELS  
SMRT283R3S  
SMRT2805S  
SMRT288R7S  
unItS  
parameter  
COnDItIOnS  
MIꢀ  
TYP  
3.30  
MAX  
MIꢀ  
TYP  
5.00  
MAX  
MIꢀ  
TYP  
8.70  
MAX  
Output VOltage  
Output Current  
3.23  
0
3.37  
6.97  
23  
4.90  
0
5.10  
6.0  
30  
8.52  
0
8.87  
4.0  
35  
VDC  
A
2
2
Output pOwer  
V
= 19 tO 56 VDC  
0
0
0
W
In  
Output rIpple  
10 khz - 20 mhz  
= 19, 50 VDC  
280  
30  
200  
30  
200  
30  
mV p-p  
mV  
2
lIne regulatIOn  
V
5
5
5
In  
lOaD regulatIOn  
5
40  
5
40  
5
80  
mV  
V
= 19, 50  
90  
70  
80  
In  
1
tOtal regulatIOn  
all COnDItIOnS OF  
lIne, lOaD, agIng,  
temp anD raDIatIOn  
V
3.0  
3.6  
4.7  
5.3  
8.3  
9.1  
VDC  
Out  
Input VOltage  
Input Current  
COntInuOuS  
19  
0
28  
10  
56  
80  
19  
0
28  
10  
56  
80  
19  
0
28  
10  
56  
80  
VDC  
V
1
tranSIent 100 ms  
InhIbIteD  
nO lOaD  
60  
50  
66  
50  
72  
50  
mA  
110  
50  
110  
50  
115  
50  
3
Input rIpple Current  
eFFICIenCy  
10 kHz - 20 MHz  
mA p-p  
%
4, 5  
lOaD Fault  
POWERꢀDISSIPATION  
31  
28  
25  
W
1
reCOVery  
25  
25  
25  
ms  
5, 6, 7  
Step lOaD reSpOnSe  
tranSIent  
reCOVery  
±450  
3
±450  
3
±450  
4
mV pk  
ms  
1, 5, 6  
Step lIne reSpOnSe  
19 - 50 - 19 V  
In  
±500  
4
±500  
4
±500  
4
mV pk  
ms  
tranSIent  
reCOVery  
8
Start-up  
Delay  
nO lOaD anD Full  
35  
25  
60  
ms  
OVerShOOt  
50  
50  
95  
mV pk  
1
CapaCItIVe lOaD  
unCOnDItIOnally  
Stable, Start-up  
Delay InCreaSeD  
t
= 25°C  
5000  
5000  
5000  
µF  
C
ꢀotes  
1. ꢊꢀꢄꢃꢄnꢁꢂꢂd by dꢂꢈign, noꢁ ꢁꢂꢈꢁꢂd.  
2. To maintain tight regulation over the full input voltage range a minimum load of 2% of full load should be used on all outputs.  
3. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-/F-CE-102. The actual value of input ripple current is much less, the  
limit in the characteristic table is based on measurement resolution..  
4. Maximum power dissipation when output is shorted.  
5. Recovery time is measured from application of the transient to point at which VOUT is within 1% of VOUT at final value.  
6. Transition time >10 µs.  
7. Half load to/from full load.  
8. Measured from release of inhibit or input voltage step  
www.interpoint.com  
Page 7 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
Electrical Characteristics: -55°C to +125°C T , 28 VDC Vin, 100% load, unless otherwise specified.  
C
SIꢀꢁLE OUTPUT MODELS  
SMRT2812S  
SMRT2815S  
unItS  
parameter  
COnDItIOnS  
MIꢀ  
TYP  
MAX  
MIꢀ  
TYP  
MAX  
Output VOltage  
Output Current  
11.76 12.00 12.24 14.70 15.00 15.30  
VDC  
A
2
0
5
2.92  
35  
0
5
2.33  
35  
2
Output pOwer  
V
= 19 tO 56 VDC  
W
In  
Output rIpple  
10 khz - 20 mhz  
200  
30  
180  
30  
mV p-p  
mV  
2
lIne regulatIOn  
V
= 19, 50 VDC  
In  
lOaD regulatIOn  
5
40  
5
40  
mV  
V
= 19, 50 VDC  
90  
90  
In  
1
tOtal regulatIOn  
all COnDItIOnS OF  
lIne, lOaD, agIng,  
temp anD raDIatIOn  
V
10.9  
13.1  
14.0  
16.0  
VDC  
OUT  
Input VOltage  
Input Current  
COntInuOuS  
19  
0
28  
10  
56  
80  
19  
0
28  
10  
56  
80  
VDC  
V
1
tranSIent 100 ms  
InhIbIteD  
nO lOaD  
75  
50  
75  
50  
mA  
110  
50  
110  
50  
3
Input rIpple Current  
eFFICIenCy  
10 kHz - 20 MHz  
mA p-p  
%
4, 5  
lOaD Fault  
POWERꢀDISSIPATION  
20  
20  
W
1
reCOVery  
25  
25  
ms  
5, 6, 7  
Step lOaD reSpOnSe  
tranSIent  
reCOVery  
±575  
3
±575  
3
mV pk  
ms  
1, 5, 6  
Step lIne reSpOnSe  
19 - 50 - 19 V  
In  
±700  
4
±700  
4
mV pk  
ms  
tranSIent  
reCOVery  
8
Start-up  
Delay  
nO lOaD anD Full  
25  
25  
ms  
OVerShOOt  
120  
150  
mV pk  
µF  
1
CapaCItIVe lOaD  
unCOnDItIOnally  
Stable, Start-up  
Delay InCreaSeD  
t
= 25°C  
5000  
5000  
C
ꢀotes  
1. ꢊꢀꢄꢃꢄnꢁꢂꢂd by dꢂꢈign, noꢁ ꢁꢂꢈꢁꢂd.  
2. To maintain tight regulation over the full input voltage range a minimum load of 2% of full load should be used on all outputs.  
3. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-/F-CE-102. The actual value of input ripple  
current is much less, the limit in the characteristic table is based on measurement resolution..  
4. Maximum power dissipation when output is shorted.  
5. Recovery time is measured from application of the transient to point at which VOUT is within 1% of VOUT at final value.  
6. Transition time >10 µs.  
7. Half load to/from full load.  
8. Measured from release of inhibit or input voltage step  
www.interpoint.com  
Page 8 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
Electrical Characteristics: -55°C to +125°C T , 28 VDC Vin, 100% load, unless otherwise specified.  
C
DUAL OUTPUT MODELS  
SMRT2805D  
SMRT2812D  
SMRT2815D  
unItS  
parameter  
COnDItIOnS  
VO u t a  
MIꢀ  
TYP  
5.00  
5.00  
MAX  
MIꢀ  
TYP  
MAX  
MIꢀ  
TYP  
MAX  
Output VOltage  
Output Current  
4.90  
4.90  
5.10  
5.10  
3.0  
11.76 12.00 12.24 14.70 15.00 15.30  
11.76 12.00 12.24 14.70 15.00 15.30  
VDC  
VO u t b  
2, 3  
VO u t a  
1.46  
1.46  
1.17  
1.17  
A
VO u t b  
3.0  
2, 3  
Output pOwer  
VO u t a  
VO u t b  
0
5
15  
15  
0
5
17.5  
17.5  
200  
25  
0
5
17.5  
17.5  
180  
30  
W
VIn = 19 tO 56 VDC  
0
0
0
Output rIpple  
10 khz - 20 mhz  
200  
30  
mV p-p  
mV  
2
lIne regulatIOn  
V
= 19, 50 VDC  
Iꢀ  
lOaD regulatIOn  
40  
5
50  
5
40  
mV  
V
= 19, 50 VDC  
70  
100  
70  
Iꢀ  
1
tOtal regulatIOn  
all COnDItIOnS OF  
lIne, lOaD, agIng,  
temp anD raDIatIOn  
V
±4.6  
±5.4  
±10.9  
±13.1 ±14.0  
±16.0  
VDC  
OUT  
4
Input VOltage  
COntInuOuS  
19  
0
28  
56  
80  
19  
0
28  
56  
80  
19  
0
28  
56  
80  
VDC  
V
tranSIent 100 ms  
4
Input Current  
InhIbIteD  
50  
50  
50  
mA  
nO lOaD  
110  
110  
110  
Input rIpple  
Current  
mA p-p  
10 kHz - 20 MHz  
10  
50  
10  
150  
10  
50  
4
eFFICIenCy  
66  
28  
75  
20  
75  
20  
%
W
5, 6  
lOaD Fault  
pOwer DISSIpatIOn  
1
reCOVery  
25  
25  
25  
ms  
Step lOaD  
reSpOnSe  
tranSIent  
reCOVery  
±450  
3
±450  
2
±575  
3
mV pk  
ms  
6, 7, 8  
Step lIne  
reSpOnSe  
19 - 50 - 19 V  
tranSIent  
Iꢀ  
±500  
4
±1000  
3
±700  
4
mv pk  
ms  
1, 6, 7  
reCOVery  
9
Start-up  
Delay  
nO lOaD anD Full  
25  
20  
25  
ms  
OVerShOOt  
50  
350  
150  
mV pk  
1
CapaCItIVe lOaD  
unCOnDItIOnally  
Stable, Start-up  
Delay InCreaSeD  
t
= 25°C  
5000  
5000  
5000  
µF  
C
ꢀotes  
1. ꢊꢀꢄꢃꢄnꢁꢂꢂd by dꢂꢈign, noꢁ ꢁꢂꢈꢁꢂd.  
2. The specified maximum current/power is available from each output.  
3. To maintain tight regulation over the full input voltage range a minimum load of 2% of full load should be used on all outputs.  
4. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-/F-CE-102. The actual value of input ripple current is much less, the  
limit in the characteristic table is based on measurement resolution..  
5. Maximum power dissipation when output is shorted.  
6. Recovery time is measured from application of the transient to point at which VOUT is within 1% of VOUT at final value.  
7. Transition time >10 µs.  
8. Half load to/from full load.  
9. Measured from release of inhibit or input voltage step  
www.interpoint.com  
Page 9 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
Electrical Characteristics: -55°C to +125°C T , 28 VDC Vin, 100% load, unless otherwise specified.  
C
TRIPLE OUTPUT MODEL – SMRT283R312T  
3.3 (MAIꢀ)  
±12 (AUXILIARIES)  
unItS  
parameter  
COnDItIOnS  
MIꢀ  
3.23  
TYP  
3.30  
MAX  
3.37  
MIꢀ  
TYP  
MAX  
Output VOltage  
MAIꢀ AꢀD POS. AUX  
ꢀEꢁ. AUX.  
11.76 12.00 12.24  
VDC  
-11.58 -12.00 -12.42  
2, 3  
1
Output Current  
4.5  
0
±0.63  
1
A
TOTAL  
1.25  
2, 3  
1
Output pOwer  
0
15  
0
±7.5  
12  
W
V
= 19 tO 56 VDC  
TOTAL  
15  
Iꢀ  
Output rIpple  
10 khz - 20 mhz  
MAIꢀ AꢀD POS. AUX  
ꢀEꢁ. AUX.  
5
200  
30  
5
150  
30  
mV p-p  
mV  
lIne regulatIOn  
V
= 19, 50 VDC  
10  
5
70  
Iꢀ  
lOaD regulatIOn  
MAIꢀ AꢀD POS. AUX  
40  
40  
V
= 19, 50 VDC  
100  
120  
Iꢀ  
mV  
1
ꢀEꢁ. AUX.  
10  
300  
400  
1
V
= 19, 50 VDC  
Iꢀ  
1
tOtal regulatIOn  
all COnDItIOnS OF  
lIne, lOaD, agIng,  
temp anD raDIatIOn  
V
3.0  
3.6  
±10.9  
±13.1  
VDC  
%
OUT  
1, 4, 5  
CrOSS regulatIOn  
EFFECT Oꢀ  
2.5  
t
= 25°C  
ꢀEꢁATIVE AUXILIARY  
C
Input VOltage  
COntInuOuS  
19  
28  
56  
VDC  
V
tranSIent 100 ms  
nO lOaD  
0
80  
110  
50  
Input Current  
mA  
InhIbIteD  
6
Input rIpple Current  
10 kHz - 10 MHz  
68  
10  
50  
mA p-p  
%
7
eFFICIenCy  
8, 9  
lOaD Fault  
POWERꢀDISSIPATION  
28  
W
1
reCOVery  
25  
25  
ms  
9, 10, 11  
Step lOaD reSpOnSe  
tranSIent  
reCOVery  
±450  
3
±450  
3
mV pk  
ms  
1, 8, 9  
Step lIne reSpOnSe  
22 - 35 - 22 V  
In  
0
±500  
4
0
±750  
4
mV pk  
ms  
tranSIent  
reCOVery  
11  
Start-up  
Delay  
nO lOaD anD Full  
35  
25  
ms  
OVerShOOt  
50  
120  
mV pk  
1
CapaCItIVe lOaD  
unCOnDItIOnally  
Stable, Start-up  
Delay InCreaSeD  
t
= 25°C  
5000  
1000  
µF  
C
ꢀotes: See page 15  
www.interpoint.com  
Page 10 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
Electrical Characteristics: -55°C to +125°C T , 28 VDC Vin, 100% load, unless otherwise specified.  
C
TRIPLE OUTPUT MODEL – SMRT283R315T  
3.3 (MAIꢀ)  
TYP  
±15 (AUXILIARIES)  
unItS  
parameter  
COnDItIOnS  
MIꢀ  
3.23  
MAX  
3.37  
MIꢀ  
TYP  
MAX  
Output VOltage  
MAIꢀ AꢀD POS. AUX  
ꢀEꢁ. AUX.  
3.30  
14.70 15.00 15.30  
VDC  
-14.48 -15.00 -15.53  
2, 3  
1
Output Current  
4.5  
0
±0.5  
0.8  
A
TOTAL  
TOTAL  
1.0  
2, 3  
1
Output pOwer  
0
15  
0
±7.5  
12  
W
V
= 19 tO 56 VDC  
15  
Iꢀ  
Output rIpple  
10 khz - 20 mhz  
MAIꢀ AꢀD POS. AUX  
ꢀEꢁ. AUX.  
200  
30  
5
150  
30  
mV p-p  
lIne regulatIOn  
mV  
V
= 19, 50 VDC  
10  
5
70  
Iꢀ  
lOaD regulatIOn  
MAIꢀ AꢀD POS. AUX  
5
40  
100  
40  
V
= 19, 50 VDC  
120  
300  
400  
Iꢀ  
mV  
1
ꢀEꢁ. AUX.  
1
V
= 19, 50 VDC  
Iꢀ  
1
tOtal regulatIOn  
all COnDItIOnS OF  
lIne, lOaD, agIng,  
temp anD raDIatIOn  
V
3.0  
3.6  
±14.0  
±16.0  
VDC  
%
OUT  
1, 4, 5  
CrOSS regulatIOn  
EFFECT Oꢀ  
2.5  
t
= 25°C  
ꢀEꢁATIVE AUXILIARY  
C
Input VOltage  
COntInuOuS  
19  
28  
56  
VDC  
V
tranSIent 100 ms  
nO lOaD  
0
80  
110  
50  
Input Current  
mA  
InhIbIteD  
6
Input rIpple Current  
10 kHz - 10 MHz  
68  
10  
50  
mA p-p  
%
7
eFFICIenCy  
8, 9  
lOaD Fault  
POWERꢀDISSIPATION  
28  
W
1
reCOVery  
25  
25  
ms  
9, 10, 11  
Step lOaD reSpOnSe  
tranSIent  
reCOVery  
±450  
3
±450  
3
mV pk  
ms  
1, 8, 9  
Step lIne reSpOnSe  
22 - 35 - 22 V  
In  
0
±500  
4
0
±750  
4
mV pk  
ms  
tranSIent  
reCOVery  
11  
Start-up  
Delay  
nO lOaD anD Full  
35  
25  
ms  
OVerShOOt  
50  
150  
mV pk  
1
CapaCItIVe lOaD  
unCOnDItIOnally  
Stable, Start-up  
Delay InCreaSeD  
t
= 25°C  
5000  
1000  
µF  
C
ꢀotes: See page 15  
www.interpoint.com  
Page 11 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
Electrical Characteristics: -55°C to +125°C T , 28 VDC Vin, 100% load, unless otherwise specified.  
C
TRIPLE OUTPUT MODEL – SMRT28507T  
5 (MAIꢀ)  
TYP  
±7 (AUXILIARIES)  
unItS  
parameter  
COnDItIOnS  
MIꢀ  
4.90  
MAX  
5.10  
MIꢀ  
6.86  
-6.79  
TYP  
7.00  
7.00  
MAX  
7.14  
Output VOltage  
MAIꢀ AꢀD POS. AUX  
ꢀEꢁ. AUX.  
5.00  
VDC  
-7.21  
2, 3  
1
Output Current  
3.0  
0
±1.00  
1.2  
A
TOTAL  
TOTAL  
2.0  
2, 3  
1
Output pOwer  
0
15  
0
±7.0  
11.2  
14  
W
V
= 19 tO 56 VDC  
Iꢀ  
Output rIpple  
10 khz - 20 mhz  
MAIꢀ AꢀD POS. AUX  
ꢀEꢁ. AUX.  
5
230  
70  
5
±170  
100  
150  
250  
250  
350  
350  
mV p-p  
lIne regulatIOn  
mV  
V
= 19, 50 VDC  
Iꢀ  
lOaD regulatIOn  
MAIꢀ AꢀD POS. AUX  
100  
150  
V
= 19, 50 VDC  
Iꢀ  
mV  
1
ꢀEꢁ. AUX.  
1
V
= 19, 50 VDC  
Iꢀ  
1
tOtal regulatIOn  
all COnDItIOnS OF  
lIne, lOaD, agIng,  
temp anD raDIatIOn  
V
4.7  
5.3  
±6.53  
±7.47  
VDC  
%
OUT  
1, 4, 5  
CrOSS regulatIOn  
EFFECT Oꢀ  
2.5  
t
= 25°C  
ꢀEꢁATIVE AUXILIARY  
C
Input VOltage  
COntInuOuS  
19  
28  
56  
VDC  
V
tranSIent 100 ms  
nO lOaD  
0
80  
110  
50  
Input Current  
mA  
InhIbIteD  
6
Input rIpple Current  
10 kHz - 10 MHz  
71  
10  
50  
mA p-p  
%
7
eFFICIenCy  
8, 9  
lOaD Fault  
POWERꢀDISSIPATION  
22  
W
1
reCOVery  
25  
25  
ms  
9, 10, 11  
Step lOaD reSpOnSe  
tranSIent  
reCOVery  
±300  
2
±400  
2
mV pk  
ms  
1, 8, 9  
Step lIne reSpOnSe  
22 - 35 - 22 V  
In  
0
±500  
4
0
±750  
4
mV pk  
ms  
tranSIent  
reCOVery  
11  
Start-up  
Delay  
nO lOaD anD Full  
20  
20  
ms  
OVerShOOt  
100  
150  
mV pk  
1
CapaCItIVe lOaD  
unCOnDItIOnally  
Stable, Start-up  
Delay InCreaSeD  
t
= 25°C  
5000  
1000  
µF  
C
ꢀotes: See page 15  
www.interpoint.com  
Page 12 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
Electrical Characteristics: -55°C to +125°C T , 28 VDC Vin, 100% load, unless otherwise specified.  
C
TRIPLE OUTPUT MODEL – SMRT28512T  
5 (MAIꢀ)  
TYP  
±12 (AUXILIARIES)  
unItS  
parameter  
COnDItIOnS  
MIꢀ  
4.90  
MAX  
5.10  
MIꢀ  
TYP  
MAX  
Output VOltage  
MAIꢀ AꢀD POS. AUX  
ꢀEꢁ. AUX.  
5.00  
11.76 12.00 12.24  
VDC  
-11.58 -12.00 -12.42  
2, 3  
1
Output Current  
3.0  
0
±0.63  
1
A
TOTAL  
TOTAL  
1.25  
2, 3  
1
Output pOwer  
0
15  
0
±7.5  
12  
W
V
= 19 tO 56 VDC  
15  
Iꢀ  
Output rIpple  
10 khz - 20 mhz  
MAIꢀ AꢀD POS. AUX  
ꢀEꢁ. AUX.  
200  
30  
5
150  
30  
mV p-p  
lIne regulatIOn  
mV  
V
= 19, 50 VDC  
20  
5
70  
Iꢀ  
lOaD regulatIOn  
MAIꢀ AꢀD POS. AUX  
5
40  
100  
40  
V
= 19, 50 VDC  
10  
120  
300  
400  
Iꢀ  
mV  
1
ꢀEꢁ. AUX.  
1
V
= 19, 50 VDC  
Iꢀ  
1
tOtal regulatIOn  
all COnDItIOnS OF  
lIne, lOaD, agIng,  
temp anD raDIatIOn  
V
4.7  
5.3  
±10.9  
±13.1  
VDC  
%
OUT  
1, 4, 5  
CrOSS regulatIOn  
EFFECT Oꢀ  
2.5  
t
= 25°C  
ꢀEꢁATIVE AUXILIARY  
C
Input VOltage  
COntInuOuS  
19  
28  
56  
VDC  
V
tranSIent 100 ms  
nO lOaD  
0
80  
110  
50  
Input Current  
mA  
InhIbIteD  
6
Input rIpple Current  
10 kHz - 10 MHz  
68  
10  
50  
mA p-p  
%
7
eFFICIenCy  
8, 9  
lOaD Fault  
POWERꢀDISSIPATION  
25  
W
1
reCOVery  
25  
25  
ms  
9, 10, 11  
Step lOaD reSpOnSe  
tranSIent  
reCOVery  
±450  
3
±450  
3
mV pk  
ms  
1, 8, 9  
Step lIne reSpOnSe  
22 - 35 - 22 V  
In  
0
±500  
4
0
±750  
4
mV pk  
ms  
tranSIent  
reCOVery  
11  
Start-up  
Delay  
nO lOaD anD Full  
25  
25  
ms  
OVerShOOt  
50  
120  
mV pk  
1
CapaCItIVe lOaD  
unCOnDItIOnally  
Stable, Start-up  
Delay InCreaSeD  
t
= 25°C  
5000  
1000  
µF  
C
ꢀotes: See page 15  
www.interpoint.com  
Page 13 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
Electrical Characteristics: -55°C to +125°C T , 28 VDC Vin, 100% load, unless otherwise specified.  
C
TRIPLE OUTPUT MODEL – SMRT28515T  
5 (MAIꢀ)  
TYP  
±15 (AUXILIARIES)  
unItS  
parameter  
COnDItIOnS  
MIꢀ  
4.92  
MAX  
5.08  
MIꢀ  
TYP  
MAX  
Output VOltage  
MAIꢀ AꢀD POS. AUX  
ꢀEꢁ. AUX.  
5.00  
14.77 15.00  
15.23  
VDC  
-14.70 -15.00 -15.30  
2, 3  
1
Output Current  
3.0  
0
±0.5  
0.80  
1
A
TOTAL  
TOTAL  
2, 3  
1
Output pOwer  
0
15  
0
±7.5  
11.25  
15  
W
V
= 19 tO 56 VDC  
Iꢀ  
Output rIpple  
10 khz - 20 mhz  
MAIꢀ AꢀD POS. AUX  
ꢀEꢁ. AUX.  
5
200  
25  
20  
5
200  
25  
mV p-p  
lIne regulatIOn  
mV  
V
= 19, 50 VDC  
35  
Iꢀ  
lOaD regulatIOn  
MAIꢀ AꢀD POS. AUX  
5
50  
100  
50  
V
= 19, 50 VDC  
120  
500  
600  
Iꢀ  
mV  
1
ꢀEꢁ. AUX.  
1
V
= 19, 50 VDC  
Iꢀ  
1
tOtal regulatIOn  
all COnDItIOnS OF  
lIne, lOaD, agIng,  
temp anD raDIatIOn  
V
4.7  
5.3  
±14.0  
±16.0  
VDC  
%
OUT  
1, 4, 5  
CrOSS regulatIOn  
EFFECT Oꢀ  
2.5  
t
= 25°C  
ꢀEꢁATIVE AUXILIARY  
C
Input VOltage  
COntInuOuS  
19  
28  
56  
VDC  
V
tranSIent 100 ms  
nO lOaD  
0
80  
110  
50  
Input Current  
mA  
InhIbIteD  
6
Input rIpple Current  
10 kHz - 10 MHz  
70  
10  
150  
mA p-p  
%
7
eFFICIenCy  
8, 9  
lOaD Fault  
POWERꢀDISSIPATION  
25  
W
1
reCOVery  
35  
35  
ms  
9, 10, 11  
Step lOaD reSpOnSe  
tranSIent  
reCOVery  
±250  
1
±350  
1
mV pk  
ms  
1, 8, 9  
Step lIne reSpOnSe  
22 - 35 - 22 V  
In  
0
±500  
1.5  
0
±750  
1.5  
mV pk  
ms  
tranSIent  
reCOVery  
11  
Start-up  
Delay  
nO lOaD anD Full  
25  
20  
ms  
OVerShOOt  
200  
350  
mV pk  
1
CapaCItIVe lOaD  
unCOnDItIOnally  
Stable, Start-up  
Delay InCreaSeD  
t
= 25°C  
5000  
1000  
µF  
C
ꢀotes: See page 15  
www.interpoint.com  
Page 14 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
Electrical Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.  
ꢀOTES: TRIPLE OUTPUT MODELS  
1. ꢊꢀꢄꢃꢄnꢁꢂꢂd by dꢂꢈign, noꢁ ꢁꢂꢈꢁꢂd.  
2. Up to the maximum specified auxiliary output current/power is available from either auxiliary output provided the total auxiliary output current/  
power does not exceed the total current/power specified .  
3. To maintain tight regulation over the full input voltage range a minimum load of 2% of full load should be used on all outputs.  
4. To maintain the cross regulation specification, one of the auxiliaries must always provide a minimum of 20% of the total auxiliary power used.  
ꢀegative Vout cross regulation is referenced to 50%/50% balanced loads (at 100% of total rated output power - full load).  
5. Cross regulation is measured under the following conditions:  
Condition 1: +POUT = 20 - 80%,/- POUT = 80 - 20%  
Condition 2: - POUT = 20 - 80%, /+ POUT = 80 - 20%  
6. Converters meet MIL-STD-461 specification revisions for conducted emissions C-CE03 and D-/E-/F-CE-102. The actual value of input ripple  
current is much less, the limit in the characteristic table is based on measurement resolution.  
7. Efficiency measured with all outputs at full load.  
8. Maximum power dissipation when all outputs are shorted simultaneously.  
9. Recovery time is measured from application of the transient to point at which VOUT is within 1% of VOUT at final value.  
10. Transition time >10 µs.  
11. Half load to/from full load.  
12. Measured from release of inhibit or input voltage step.  
www.interpoint.com  
Page 15 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
BOTTOM VIEW CASE S  
Angled corner  
indicates pin 1  
Seal hole: 0.135 ±0.005 (3.43 ±0.13)  
6 x 0.135 (3.43) dia.  
2.205 max (56.01)  
3x 2.075 (52.68)  
12 x 0.040 ± 0.002 dia.  
(1.02 ± 0.05)  
1.700 (43.18)  
1.500 (38.10)  
1.300 (33.02)  
14  
13  
12  
11  
10  
9
1
2
3
4
5
1.100 (27.94)  
0.900 (22.86)  
0.700 (17.78)  
0.500 (12.70)  
8
3x 0.125 (3.15)  
0.00  
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, ceramic seal  
Case S, Rev C, 20091020  
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.  
FI g u r e 4: Ca S e S  
www.interpoint.com  
Page 16 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
CL A S S H A N D K, MIL-PRF-38534 EL E M E N T EV A L U A T I O N  
COmpOnent-level test  
perFOrmed  
spaCe prOtOtype (O)  
nOn-Qml1  
Class h  
Qml  
Class K  
Qml  
M/S 2  
P 3  
M/S 2  
P 3  
yes  
yes  
M/S 2  
P 3  
yes  
yes  
Element Electrical  
Element Visual  
yes  
no  
yes  
yes  
yes  
yes  
no  
no  
Internal Visual  
no  
no  
no  
no  
no  
no  
no  
N/A  
no  
no  
no  
no  
no  
N/A  
no  
yes  
no  
N/A  
no  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
N/A  
N/A  
yes  
yes  
yes  
no  
N/A  
yes  
yes  
N/A  
N/A  
N/A  
N/A  
yes  
yes  
yes  
yes  
N/A  
yes  
Temperature Cycling  
Constant Acceleration  
Interim Electrical  
Burn-in  
no  
no  
no  
N/A  
N/A  
N/A  
N/A  
no  
no  
N/A  
N/A  
N/A  
N/A  
no  
no  
Post Burn-in Electrical  
Steady State Life  
Voltage Conditioning Aging  
Visual Inspection  
Final Electrical  
no  
no  
N/A  
N/A  
yes  
yes  
no  
no  
no  
no  
yes  
yes  
N/A  
yes  
Wire Bond Evaluation  
SEM  
no  
N/A  
no  
SLAM™/C-SAM:  
no  
Input capacitors only  
(Add’l test, not req. by H or K)  
ꢀotes:  
1. ꢀon-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  
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  
SC r e e n I n g ta b l e 1: el e m e n t eV a l u a t I O n  
www.interpoint.com  
Page 17 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
CL A S S H A N D K, MIL-PRF-38534 EN V I R O N M E N T A L SC R E E N I N G  
end item-level test  
perFOrmed  
spaCe prOtOtype (O)  
nOn-Qml1  
Class h  
Qml  
Class K  
Qml  
2
Non-destruct bond pull  
Method 2023  
no  
yes  
yes  
yes  
Pre-cap Inspection  
Method 2017, 2032  
yes  
yes  
Temperature Cycle (10 times)  
Method 1010, Cond. C, -65°C to 150°C, ambient  
yes  
yes  
yes  
yes  
yes  
yes  
Constant Acceleration  
Method 2001, 3000 g  
PIND Test  
Method 2020, Cond. A  
2
no  
yes  
yes  
yes  
Pre burn-in test  
yes  
yes  
Burn-in  
Method 1015, 125°C case, typical  
96 hours  
160 hours  
yes  
no  
no  
no  
yes  
no  
no  
no  
yes  
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  
yes  
N/A  
N/A  
yes  
N/A  
N/A  
yes  
yes  
Radiography  
Method 2012  
Post Radiography Electrical Test  
Room temperature  
2
yes  
Hermeticity Test  
Fine Leak, Method 1014, Cond. A  
Gross Leak, Method 1014, Cond. C  
yes  
yes  
yes  
yes  
yes  
yes  
Final visual inspection  
Method 2009  
yes  
yes  
yes  
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534.  
ꢀotes:  
1. Space Prototype (O), non-QML products, do not meet all of the requirements of MIL-PRF-38534.  
2. ꢀot required by DSCC but performed to assure product quality.  
SC r e e n I n g ta b l e 2: en V I r O n m e n t a l SC r e e n I n g  
www.interpoint.com  
Page 18 of 19  
SMRT28 Rev E - 20100216  
Crane Aerospace & Electronics Power Solutions  
sMrt28 singlꢂ, Dꢀꢄl ꢄnd tꢃiplꢂ spꢄꢇꢂ Dc/Dc convꢂꢃꢁꢂꢃꢈ  
28 VOLt Iꢆꢅut – 35 Watt – sꢅace quaLIFIeD  
CL A S S H A N D K, MIL-PRF-38534  
RA D I A T I O N HA R D N E S S AS S U R A N C E (RHA)  
ENVIRONMENTAL SCREENING LEVELS  
SPACE  
PROTOTYPE (O)  
N O N -QML2  
CLASS H  
QML  
CLASS K  
QML  
rAdIAtIon hArdneSS  
ASSurAnce leVelS 1  
3
O
Standard, no radiation guarantee  
OO  
N/A  
N/A  
N/A  
N/A  
N/A  
KP  
KR  
KF  
p Radiation tolerant–  
Tested lots up to 30 kRads (Si) total dose.  
HP  
4
2
SEE guarantee up to 80 MeV-cm /mg  
r Radiation tolerant–  
Tested lots up to 100 kRads (Si) total dose.  
HR  
N/A  
4
2
SEE guarantee up to 80 MeV-cm /mg  
F Radiation tolerant–  
Tested lots up to 300 kRads (Si) total dose.  
4
2
SEE guarantee up to 80 MeV-cm /mg  
ꢀotes:  
1. Redmond site, Interpoint, has a DSCC approved Radiation Hardness Assurance plan. Our SMD products with RHA “P”, “R,” or “F” code  
meet DSCC requirements.  
2. Space Prototype (O), non-QML, products do not meet all of the requirements of MIL-PRF-38534.  
3. 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”  
4. ꢀo upset at the pins.  
SMRT28 Single, Dual and Triple SMRT28 Rev E - 20100216. This revision supersedes 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. SMRT Series is a trademark of Interpoint. Copyright © 1999 - 2010 Interpoint Corporation. All rights reserved. www.interpoint.com  
Page 19 of 19  

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