S2815S [INFINEON]
DC-DC Regulated Power Supply Module, 1 Output, 10W, Hybrid, 1.710 X 1.310 INCH, 0.450 INCH HEIGHT, HERMETIC SEALED PACKAGE-7;
| 型号： | S2815S |
| 厂家： | 
Infineon |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, 10W, Hybrid, 1.710 X 1.310 INCH, 0.450 INCH HEIGHT, HERMETIC SEALED PACKAGE-7 局域网 CD |
| 文件： | 总8页 (文件大小：67K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PD- 94584
S-SERIES
28V Input, Single Output
HIGH RELIABILITY
RADIATION HARDENED
LOW POWER
DC/DC CONVERTER
Description
The S-Series of DC/DC converters are low power ra-
diation hardened, high reliability devices designed for
hostile radiation environments such as those encoun-
tered by geostationary earth orbit satellites, deep space
probes and communication systems. Features include
small size, high efficiency, low weight and a high toler-
ance to total ionizing dose, single event effects, and
environmental stresses such as temperature extremes,
mechanical shock, and vibration. All components are
fully derated to meet the requirements of MIL-STD-975
and MIL-STD-1547. Extensive documentation includ-
ing Radiation Susceptibility, Thermal Analysis, Stress
Analysis and MTBF are available.
Features
n Total Dose > 100K Rad(Si)
n SEE > 82 MeV.cm2/mg
n Low Weight < 50 grams
n Magnetically Coupled Feedback
n 18V to 40V DC Input Range
n Up to 10W Output Power
n Single Output Models Include
3.3, 5, 12 and 15 V
n High Efficiency - to 82%
n -55°C to +125°C Operating Temperature
Range
n 100MΩ @ 500VDC Isolation
n Under-Voltage Lockout
n Short Circuit and Overload Protection
n Output Over Voltage Limiter
n External Inhibit
The converters incorporate a fixed frequency single
ended forward topology with magnetic feedback and
an internal EMI filter utilizing large multilayer ceramic
capacitors processed per MIL-PRF-49470 for improved
reliability. All models include an external inhibit port .
They are encased in a hermetic 1.71” x 1.31” x 0.425”
steel package and weigh less than 50 grams. The pack-
age utilizes rugged ceramic feed-through copper core
pins and is hermetically sealed using parallel seam
welding.
Applications
n
n
n
Geostationary or Low Earth Orbit Satellites
Launch Vehicles
Communication Systems
Environmental screening includes temperature cycling,
constant acceleration, fine and gross leak, and burn-in
as specified by MIL-PRF-38534 for class K hybrids.
Non-flight versions of the S-Series converters are avail-
able for system development purposes. Variations
inelectrical specifications and screening to meet custom
requirements can be accommodated.
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1
03/28/03
S-SERIES
Circuit Description
An external enable port is provided to control con-
verter operation. This input is intended for opera-
tion with an open collector transistor drive or a relay
closure to the input return. The pin may be left open
for normal operation and has a nominal open cir-
cuit voltage of 10.5V
The S-Series converters utilize a single-ended for-
ward topology with resonant reset. The nominal
switching frequency is 500kHz. Electrical isolation
and tight output regulation are achieved through the
use of a magnetically coupled feedback. Voltage
feed-forward with duty factor limiting provides high
line rejection.
Design Methodology
The S-Series was developed using a proven con-
servative design methodology, which includes se-
lecting radiation tolerant, and established reliability
components and fully derating to the requirements
of MIL-STD-975 and MIL-STD-1547. Heavy derat-
ing of the radiation-hardened power MOSFET virtu-
ally eliminates the possibility of SEGR and SEB. A
magnetic feedback circuit is utilized instead of opto-
couplers to minimize temperature, radiation and
aging sensitivity. PSPICE was used extensively to
predict and optimize circuit performance for both
beginning and end-of-life. Thorough design analy-
ses include Radiation Susceptibility (TREE), Worst
Output power is limited under any load fault condi-
tion to approximately 125% of rated. An overload
condition causes the converter output to behave like
a constant current source with the output voltage
dropping below nominal. The converter will resume
normal operation when the load current is reduced
below the current limit point. This protects the con-
verter from both overload and short circuit condi-
tions. The current limit point exhibits a slightly nega-
tive temperature coefficient to reduce the possibility
of thermal runaway. There are no latching elements
included in the load fault protection circuits to elimi-
nate the possibility of falsely triggering the protec-
tion circuits during single event radiation exposure.
Case, Stress, Thermal and Reliability (MTBF).
An under-voltage protection circuit prohibits the con-
verter from operating when the line voltage is too
low for safe operation. The converter will not start
until the line voltage rises to approximately 12 volts
2
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S-SERIES
Absolute Maximum Ratings
Recommended Operating Conditions
Input voltage range
Output power
-0.5Vdc to +60Vdc
Internally limited
Input voltage range
Output power
18Vdc to +40Vdc
0 to Max. Rated
Lead temperature
300 C for 10 seconds
°
Operating
Operating temperature
Operating temperature
-55 C to +135 C
°
-55 C to +125 C
°
°
°
temperature
1
Storage temperature
-55 C to +135 C
°
-55 C to +70 C
°
°
°
1 Meets derating per MIL-STD-975
Electrical Performance Characteristics
Conditions
-55°C ≤ TC ≤ +125°C
IN = 28V DC ± 5%, CL = 0
unless otherwise specified
Limits
Nom
28
Group A
Parameter
Unit
Subgroup
V
Min
18
Max
40
Input Voltage
V
Output Voltage ( Vout )
S2803R3S
S2805S
1
1
1
1
IOUT = 100% rated load
3.27
4.95
3.30
5.00
3.33
5.05
V
V
V
V
S2812S
11.88
14.85
12.00
15.00
12.12
15.15
S2815S
S2803R3S
S2805S
S2812S
S2815S
2,3
2,3
2,3
2,3
IOUT = 100% rated load
3.23
4.90
3.37
5.10
V
V
V
V
11.76
14.70
12.24
15.30
Output power ( POUT
S2803R3S
)
)
1,2,3
V
V
IN = 18, 28, 40 Volts, Note 2
IN = 18, 28, 40 Volts, Note 2
0
0
10
10
W
W
All Others
Output current ( IOUT
S2803R3S
S2805S
S2812S
S2815S
1,2,3
0
0
0
0
3.03
2.0
A
A
A
A
0.83
0.67
Line regulation ( VRLINE
)
1,2,3
1,2,3
VIN = 18, 28, 40 Volts
-0.25
-0.50
0.25
0.50
%
%
I
OUT = 0, 50%, 100% rated
Load regulation ( VRLOAD
)
IOUT = 0, 50%, 100% rated
IN = 18, 28, 40 Volts
V
For Notes to Specifications, refer to page 5
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3
S-SERIES
Electrical Performance Characteristics ( continued )
Conditions
-55 C +125 C
Limits
Nom
Group A
Subgroup
T
°
≤
≤
VIN = 28V DC ± 5%, CL = 0
°
C
Parameter
Unit
Min
Max
unless otherwise specified
Input current ( IIN
)
S2803R3S
S2805S
S2812S
S2815S
1,2,3
I
OUT = 0, Pin 4 open
60
70
70
70
mA
Pin 4 shorted to pin 2
5
Switching frequency ( FS
)
1,2,3
500
525
550
KHz
Output ripple ( VRIP
)
VIN = 18, 28, 40 Volts
I
OUT = 100% rated load
Note 6
S2803R3S
S2805S
S2812S
S2815S
1,2,3
35
25
70
80
mV p-p
mV p-p
mV p-p
mV p-p
Efficiency ( EFF
)
S2803R3S
S2805S
S2812S
S2815S
1,2,3
I
OUT = 100% rated load
Note 4
73
75
78
78
77
79
80
80
%
%
%
%
Enable Input (Inhibit Function)
Open circuit voltage
1,2,3
Note 1
9.5
11.5
500
50
V
A
µ
Drive current (sink)
Voltage range
-0.5
V
Current Limit Point
105
Expressed as a percentage
of full rated load current
1,2,3
VOUT = 90% of Nominal
130
%
Power dissipation, load fault (PD)
1,2,3
4,5,6
Short Circuit, Overload, Note 8
9
W
Output response to
Half Load to/ from Full Load, Note 9
-300
300
mV pk
step load changes (VTLD
)
Recovery time,
step load changes (TTLD
4,5,6
Half Load to/from Full Load, Notes
9,10
200
S
µ
)
For Notes to Specifications, refer to page 5
4
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S-SERIES
Electrical Performance Characteristics ( continued )
Conditions
Limits
Nom
Group A
°
≤
≤
°
-55 C TC +125 C
VIN = 28V DC ± 5%, CL = 0
unless otherwise specified
Parameter
Unit
Subgroup
Min
Max
Output response to
18V to/from 40V
step line changes (VTLN
)
4,5,6
4,5,6
4,5,6
IOUT = 100% rated load, Notes 1,11
-300
300
200
mV pk
Recovery time,
18V to/from 40V
step line changes (TTLN
Turn-on Response
Overshoot (VOS
Turn-on Delay (TDLY
)
IOUT = 100% rated load, Notes 1,10,11
µS
)
No Load, Full Load
Note12
500
10
mV
mS
)
1.5
Capacitive Load (CL)
S2803R3S
S2805S
1
I
OUT = 100% rated load
2200
1000
180
µF
µF
µF
µF
No effect on DC performance
Notes 1, 7
S2812S
S2815S
120
Line Rejection
Isolation
1
1
IOUT = 100% rated load
DC to 50KHz, Note 1
40
50
dB
Input to Output or Any Pin to Case
except pin 3, test @ 500VDC
100
MΩ
Device Weight
MTBF
50
grams
Hours
6
1.5 x 10
MIL-HDBK-217F2, SF, 35°C
Table I. Electrical Performance Characteristics - Notes
1. Parameter is tested as part of design characterization or after design changes. Thereafter, parameter shall
be guaranteed to the limits specified.
2. Parameter verified during line and load regulation tests.
3. Output load current must be distributed such that at least 20% of the total load current is being provided by
one of the outputs.
4. Nominal measured at 25°C.
5. Cross regulation is measured with 20% rated load on output under test while changing the load on the
other output from 20% to 80% of rated.
6. Guaranteed for a D.C. to 20MHz bandwidth. Tested using a 20KHz to 10MHz bandwidth.
7. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A
capacitive load in excess of the maximum limit may interfere with the proper operation of the converter’s
overload protection, causing erratic behavior during turn-on.
8. Overload power dissipation is defined as the device power dissipation with the load set such that VOUT
=
90% of nominal.
9. Load step transition time ≥ 10 mSec.
10. Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1% of
its steady state value.
11. Line step transition time ≥ 100 mSec.
12. Turn-on delay time from either a step application of input power or a logic low to a logic high transition on
the inhibit pin (pin 4) to the point where VOUT = 90% of nominal.
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5
S-SERIES
Radiation Performance Characteristics
Highest
Level
Test
Conditions
Min
Typ
Unit
Tested
MIL-STD-883, Method 1019
Operating bias applied during exposure,
Full Rated Load, VIN = 28V
KRads
(Si)
Total Ionizing Dose ( Gamma )
100
200
Heavy ions (LET)
2
Single Event Effects
MeVcm
Operating bias applied during exposure,
Full Rated Load, VIN = 28V
82
82
SEU, SEL, SEGR, SEB
/mg
Device Screening
Test/Inspection
Method
/EM Condition
Flight Condition
Element Evaluation
Nondestructive Bond Pull
Internal Visual
MIL-PRF-38534 class K equivalent with SEM
MIL-STD-883, Method 2023
r
r
MIL-STD-883, Method 2017
r
Temperature Cycling
Constant Acceleration
Electrical
MIL-STD-883, Method 1010
C
MIL-STD-883, Method 2001(2K-g)
In accordance with device specification
MIL-STD-883, Method 1015
A, Y1 axis only
r
Burn-in (2 × 160 hours)
Final Electrical (Group A )
48 Hours
320 Hours
In accordance with device specification
MIL-STD-883, Method 1014
r
r
Seal
Fine Leak
Gross Leak
A1
C
Radiographic
MIL-STD-883, Method 2012
MIL-STD-883, Method 2009
r
r
External Visual
r
6
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S-SERIES
Block Diagram
Single Output
EMI
Filter
1
+Input
6
7
+Vout
Under-Voltage
Detector
Vout
Return
Primary
Housekeeping
Supply
4
Enable
Drive
2
Pulse Width
Modulator
Error
Amp &
Ref
FB
CS
Case
Input
Return
3
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7
S-SERIES
Mechanical Diagram
1.960
Ø
0.140
3 Plcs
0.600 1.310
0.355
1.000
0.600
0.705
0.400
0.200
P in ø
0.030
1.710
0.250 T yp
0.155
2.210 R ef
2.265 M ax
0.26 ±0.015
T olera nces, u nless
oth erw ise spe cified
.X X
.X X X
=
=
±
±
0 .01 0
0 .00 5
0.050
Typ
0.425 M ax
0.220
Pin Designation
Part Numbering
S 28 05 S / EM
Pin No.
Single
Model
Suffix
None = Flight
/EM = Prototype
1
2
3
4
5
6
7
+Input
Case
Input Voltage
28 = 28V Nominal
Output Voltage
03R3 = 3.3V, 05 = 5V
12 = 12V, 15 = 15V
Outputs
S = Single
Input Return
Enable
N/C
+ Vout
Vout Return
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ADVANCED ANALOG: 2270 Martin Av., Santa Clara, California 95050, Tel: (408) 727-0500
Visit us at www.irf.com for sales contact information.
Data and specifications subject to change without notice. 03/03
8
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