SA50-28-5-12S-B-T [MICROSEMI]
DC-DC Regulated Power Supply Module;
| 型号： | SA50-28-5-12S-B-T |
| 厂家： | 
Microsemi |
| 描述： | DC-DC Regulated Power Supply Module |
| 文件： | 总20页 (文件大小：2843K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
RADIATION HARDENED
ISOLATED DC/DC CONVERTERS
SA50-120-5-15T
50 Watts Total Power
5Vdc, +/- 15Vdc, Triple Output
DESCRIPTION
The SA series of DC-DC converters
are designed for the rigors of space,
characterized for Total Ionizing
Dose and Single Event Effects. Oper-
ating at a fixed frequency of 220
kHz, the SA family of parts can be ex-
ternally synced with other fre-
quency sources. The SA50 contains
an internal EMI filter making it com-
pliant to Mil Std 461 emissions and
susceptibility.
FEATURES
+120 Vdc Satellite Input Interface
100kRad (Si) TID; Single Event Effect rated
Surface Mount Construction (non-hybrid)
50W total power, high efficiencies 86%+
Patented Magnetic Feedback
Isolated Synchronization Input
Primary referenced ON – OFF command
Over-current Protection
Microsemi Power Management Group
(PMG) has achieved decades of flawless
execution in harsh space environments.
PMG’s heritage, producing complex cus-
tom (radiation hardened) switching
power designs and systems is now com-
plimented with the introduction of the
“SA Series” Standard Radiation Hardened
DC/DC converter modules. The same rig-
orous design methodology employed for
custom designs has been applied to the
SA Family of standard products. Designed
and manufactured in the USA, the SA50
family requires an ITAR license for export
which we will be happy to facilitate.
Input Under-voltage lockout
MIL-STD-1547B design de-rating criteria
100% Space level Environmental Screening
Standard Mounting 2.05” x 3.05” x 0.475”
Single, Dual & Triple Output Options
SEE > 80 MeV•cm2 /mg Version Available
EMI Compliance to MIL-STD-461
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 1 of 20
ELECTRICAL PARAMETERS
Absolute Maximum Ratings
Recommended Operating Conditions
VIN range
-0.5Vdc to +158Vdc
50 Watts
VIN range
+86Vdc to +158Vdc
+86Vdc to +120Vdc
VIN range a
Output power
Lead temperature
+300°C for 10 Sec.
VIN range b
VIN range d
Output power
+86Vdc to +100Vdc
+86Vdc to +135Vdc
2 watts to Max. Rated
Operating temperature -55°C to +125°C
Storage temperature
Shock
-55°C to +125°C
1500 gpk, 0.5 msec, ½ sine
Operating temperature c -55°C to +125°C
Constant Acceleration 50 g
Random Vibration 24.06 grms , 50-2000 Hz
Operating temperature a,b -55°C to +70°C
a
b
c
Meets derating per MIL-STD-975M
Meets derating per MIL-STD-1547B
For operation at +125°C see table Note 15
Single Event Effect compliant
d
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 2 of 20
ELECTRICAL PARAMETERS
Group A
Subgroup
Conditions
-55°C ≤ TCASE ≤ +85°C
Limits
Parameter
1
2
3
25°C
-55°C
85°C
Unit
VIN = 120V DC ± 5%, CL = 0
unless otherwise specified
Min
Nom
Max
Input Voltage
1,2,3
Note 2
86
120
158
V
Output Voltage ( VOUT
)
(main)
(aux.)
(main)
(aux.)
5.08
14.46
5.05
5.10
14.75
5.10
5.12
15.05
5.15
1
IOUT = 100% rated load, Note 5
IOUT = 100% rated load, Note 5
V
V
2,3
14.25
14.75
15.25
Output Power (POUT
)
1,2,3
1,2,3
VIN = 86, 120, 158 Volts, Notes 2,4
5
50
W
Output current (IOUT
(main)
(aux.)
)
400
100
4000
1000
VIN = 86, 120, 158 Volts, Notes 2,3,4,5
mA
Line regulation ( VRLINE
(main)
(aux.)
)
VIN = 86, 120, 158 Volts
IOUT =10%, 50%, 100% rated, Notes 5, 14
-10
-150
10
150
1,2,3
1,2,3
mV
mV
Load regulation ( VRLOAD
(main)
(aux.)
)
VIN = 86, 120, 158 Volts
IOUT =10%, 50%, 100% rated, Note 5, 13
-50
-500
50
500
Cross regulation (VRCROSS
)
VIN = 86, 120, 158 Volts
(aux.)
1,2,3
1,2,3
IOUT = 2.5A to 1A and 2.5A to 4A on main
and ±half rated on aux. outputs
-3.00
3.00
%
IOUT = 0, Pin 3 open
Pin 3 shorted to pin 2
7
3.0
10
5.0
Input current (IIN
)
mA
Output ripple (VRIP
(main)
(aux.)
)
VIN = 86, 120, 158 Volts
IOUT = 100% rated load, Notes 5, 6
25
37.5
50
75
1,2,3
mV p-p
Switching frequency (FS)
Efficiency ( EFF )
1,2,3
1,2,3
Sync. Input (Pin 4) open
200
220
240
kHz
%
IOUT = 100% rated load, Note 5
[80] 84
[82] 86
Inhibit Input
ON voltage (or Open Collector)
OFF drive current (sink)
OFF voltage
4.5
1000
V
μA
V
Note 1
2
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 3 of 20
ELECTRICAL PARAMETERS
Group A
Subgroup
Conditions
-55°C ≤ TCASE ≤ +85°C
Limits
Parameter
1
2
3
25°C
-55°C
85°C
Unit
VIN = 120V DC ± 5%, CL = 0
unless otherwise specified
Min
Nom
Max
Synchronization Input
frequency range
pulse high level
pulse low level
pulse transition rate
pulse duty cycle
500
4.0
-0.5
200
10
600
10.0
0.5
kHz
V
V
V/μs
%
Ext. Clock on Sync. Input (Pin 4)
Note 1
80
135
18
Current Limit Point
Expressed as a % of full rated
output current
1,2,3
1,2,3
VOUT = 90% of Nominal, Note 5
Short Circuit, Overload, Note 8
105
%
Power dissipation,
load fault (PD)
W
Output response to
step load changes (VTLD
Half Load to/from Full Load, Notes 5,9
Half Load to/from Full Load, Note 5,9,10
4,5,6
4,5,6
-300
-300
300
200
300
200
mV pk
μSec
mV pk
μs
)
Recovery time,
step load changes (TTLD
50
50
)
Output response
to step line changes (VTLN
86V to/from 158V
IOUT = 100% rated load, Notes 1, 5,11
)
Recovery time,
step line changes (TTLN
86V to/from 158V
IOUT = 100% rated load, Notes 1, 5,11
)
Turn-on Response
Overshoot (VOS) (main)
Overshoot (VOS) (aux.)
500
750
5.0
mV
mV
No Load, Full Load
Notes 5,12
4,5,6
Turn-on Delay (TDLY
)
1.0
mSec
Capacitive Load (CL)
(main)
(Each aux. output)
IOUT = 100% rated load, No effect on DC
performance, Notes 1, 5, 7
1000
200
μF
μF
DC to 50KHz, Notes 1, 5
IOUT = 100% rated load
Line Rejection
40
60
dB
Input (Pins 1,2,3) to Outputs
Any Pin to Case (except pin 6)
Sync and Sync Rtn to any pin and case
Main to Aux outputs
Isolation
1
100
MΩ
Test @ 200VDC
Device Weight
MTBF
110
g
MIL-HDBK-217F2, SF, 35°C
8.22E+06
Hrs
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 4 of 20
ELECTRICAL PARAMETERS
Radiation Tests
Conditions
Test
Min
Typ
Unit
Total Ionizing Dose
(Gamma)
MIL-STD-883, Method 1019
Operating bias applied during exposure,
MIL-STD-883, Method 1023
Operating bias applied during exposure,
Full Rated Load, VIN = 70V
100
300
KRad (Si)
Dose Rate (Gamma Dot)
Temporary Saturation Survival
Rad (Si)
/sec
1E8
4E10
1E11
1E13
Neutrons
/cm2
MIL-STD-883, Method 1017
Neutron Fluence
8E12
Heavy ions (LET)
Operating bias applied during exposure,
Full Rated Load, VIN = 70V, Note 5
MeV•cm2
/mg
Single Event Effects SEU, SEL, SEGR,
SEB
35
[82]
39.7
[86]
Notes: Electrical Performance Characteristics
1. Parameter guaranteed by design.
2. Parameter verified during line and load regulation tests. Regulation is specified for 10% to 100% loading on all outputs.
3. Auxiliary output regulation is not maintained if main output load is less than 10%.
4. Auxiliary outputs require at least 10% loading for specified regulation. Voltage may increase at lighter loads and is ultimately limited by overvoltage zener diodes.
5.Unless otherwise specified, “Rated” load is 20W on the main (+5 volt) output and 15 watts each on the auxiliary (±15 volt) outputs. Load currents of up to 5A and ±1.5A on the main
and auxiliary outputs respectively are acceptable as long as the total output power does not to exceed 50 watts. Values in [ ] brackets reflect “-H" option SEE hardened version
performance. The "-H" option incorporates alternative FET technologies providing a >82 MeV•cm2 /mg (Gold Ion) SEE capability to the design.
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 μs.
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 μs.
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 3) to the point where VOUT = 90% of nominal.
13. Load Regulation relative to output voltage at 50% rated load.
14. Line Regulation relative to output voltage at 120Vdc input.
15. For operation at temperatures between +85°C and +125°C, derate power linearly from 50 watts to zero. Parameter limits are not guaranteed.
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 5 of 20
BLOCK DIAGRAM
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 6 of 20
THEORY OF OPERATION
Input voltage is applied to the input EMI filter. This filter consists of differential and common mode
components that attenuate the internal converter switching noise. The internal EMI filter attenuates
conducted emissions to ensure compliance to MIL-STD-461 levels.
Internal controller bias is supplied during power up and in over-current scenarios via Darlington
startup transistors off the input line. The controller power supply ramps up to the turn on point
where it starts to supply drive to the main power converter MOSFET Q1. Under normal load condi-
tions the output voltage will come up and a “Bootstrap” voltage is fed back to stabilize the Bias sup-
ply eliminating power loss in the start-up transistors.
Main power conversion occurs in the forward converter Q1 and associated Transformer. The sec-
ondary windings develop the required output voltages in parallel. A coupled inductor promotes good
output cross regulation. Elimination of secondary side post regulators promotes high efficiency per-
formance.
Output voltages are regulated on the main output secondary side. A TL1431 reference develops a
current mode error signal which is chopped by the main forward transformer voltage and the
summed with the primary side converter current in a patented magnetic feedback approach. The
combined “V + I” error signal is applied to the primary controller’s ramp control input to complete the
regulation loop.
The primary ON OFF command disables internal switch-mode action when pulled low.
The SYNC input is fully transformer isolated to allow operation from primary or secondary refer-
enced sync drives.
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 7 of 20
TYPICAL CONFIGURATION DIAGRAM
Pin #
Designation
+120V IN
+120V RTN
ON/OFF
SYNC
SYNC RTN
CHASSIS
Pin #
7
8
Designation
15V B RTN
+15V B
15V A RTN
+15V A
1
2
3
4
5
6
9
10
11
12
+5V
5V RTN
Short Circuit / Over Current Limit
The output current is limited by the built in current limit circuit, to protect the Power Supply and the load from
overstress. The weighted sum of main and auxiliary output currents is controlled. The maximum current of any
one of the outputs can be calculated using the following relationship:
5.5×I15A + 5.5× I15B + 2 × I5 = 27 amps
Where,
I15A is the 15V A output current in amperes
I15B is the 15V B output current in amperes
I5 is the 5V output current in amperes
For example, if all outputs are fully loaded and the 5V output load impedance is further reduced to the current
limit threshold, the resulting maximum 5V output load current is:
(27 amp - 5.5×1amp - 5.5×1amp) ×1/2 = 8 amps
The converter continues to regulate its output voltage under this loading condition. If the load impedances of any
of the outputs are further decreased, the converter turns off and attempts to restart after a delay.
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 8 of 20
Sync Input:
The Power Supply’s internal clock may be synchronized to an external signal. For enhanced system con-
figuration flexibility and noise immunity, the sync input circuit is magnetically isolated from all other cir-
cuits and chassis. The interface is shown below. The circuit operates from the rising (leading) edge of the
sync waveform, that generates a short synchronization pulse to the PWM controller. Note that the sync
circuit DC input resistance is 500 Ohms. Specifically, the circuit driving the sync input needs to deliver a
minimum of 5 mA of current into the input for a minimum of 50 ns, resulting in a minimum reflected volt-
age of 4 volts. Higher voltage drives are acceptable up to 10 volts, delivering approximately proportional
higher current levels. Maintenance of high level voltage drive beyond 50 ns is not essential for correct
synchronization function.
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 9 of 20
APPLICATION DATA
Under Voltage Operation
The Input Under-voltage protection feature prevents operation at an undesirably low input voltage.
The outputs are guaranteed to turn on at the specified minimum input voltage and guaranteed to be
disabled below 70% of the specified minimum input voltage.
Inhibit Function
An external inhibit port is provided to control converter operation. The inhibit circuit is referenced
to the DC Input return. The interface is as shown below.
The inhibit signal may be an open-collector or TTL type. Interface must sink 5 mA minimum to in-
hibit the output.
Inhibit Pin
Open
Power Supply Output
ON
ON
> 4.5 volt
Short
OFF
OFF
< 3.0 volt
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 10 of 20
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 11 of 20
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 12 of 20
EMI - Differential Mode Conducted Emissions (CE02)
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 13 of 20
MIL-STD-461C EMI Characterization
EMI - Differential Mode
Conducted Emissions
(CE02)
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 14 of 20
QUALIFICATION TESTS
Custom
Test Method/Condition
Test 1/
Qualification
Method
Reference
Test Report
Test Report
External Visual
Electrical
Yes per O&M – dimensions and mass or std 883 2009
Inspection
Test
Read & Record (-55 °C, +25 °C, +85 °C)
Shock, Non-Operating
Vibration, Operating
Thermal Vacuum
Temperature Cycling
EMI
MIL-STD-202, Method 213B, Test Condition F, 1500 gpk,
0.5 msec ½ sine pulse. Three pulses in each direction of
each axis, 18 pulses total.
QTR996
Appendix B
Similarity
Similarity
Similarity
Similarity
Test
MIL-STD-202, Method 214A, Cond. II-F, 24.06 grms random
vibration, 50-2000 Hz, 3 minutes/axis, 9 min total. Outputs
monitored.
QTR996
Appendix C
MIL-STD-883, Meth 1001, Cond G, 3 cycles with base plate
temperature of -55 °C to +85 °C. Outputs monitored during
TVAC cycles, record at temperatures noted under
100 cycles from base plate temperature, MIL-STD-883,
Method 1010.8, Cond A, -55 °C to +90 °C, 10-15 C°/min, 10
min dwell at temperature limits. Outputs monitored during
CE101,103,CS101,CS103,CS116,RE101,RE102,
QTR996
Appendix D*
QTR996
Appendix D
CE101, CE103,
CS101, CS103
Only
Unit to be characterized to RS103, Radiated Susceptibility Magnetic Field 10 nT
these requirements (Not Magnetic Moment
External
No Damage
Similarity
Similarity
Similarity
Similarity
Similarity
QTR996
QTR996
QTR996
QTR996
QTR996
Visual Inspection
Electrical
Read & Record at +25 °C
Steady State Life test
End Point Electricals
1000 Hours@ Tc= +105 °C
Read & Record (-55 °C, +25 °C, +85 °C)
1/ Electrical test at +25°C shall be performed unless otherwise specified after each
Environmental test
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 15 of 20
RADIATION
Total Dose
100 krad, MIL-STD-883, Method 1019 Operating bias
applied during exposure, Full Rated Load, VIN = 120 V
Similarity
Similarity
Similarity
Similarity
RPT603
RPT603
RPT603
RPT603
SEE (Analysis)
ELDRS (Analysis)
82 MeV•cm2 /mg , Heavy ions (LET)
Operating bias applied during exposure, Full Rated Load,
VIN = 120 V
40 krad, MIL-STD-883, Method 1019, Condition DD of MIL-
STD-883 Method 1019.
Neutron Fluence (Analysis) 8E12 Min to 1E13 Typ. MIL-STD-883, Method 1017
Dose Rate ( Gamma Dot)
(Analysis)
Temporary Saturation
MIL-STD-883, Method 1023
Operating bias applied during exposure, Full Rated Load,
VIN = 120V
Similarity
RPT603
Analyses & Reports
1: Structural Analysis
2: Stress Analysis
3: Thermal Analysis
4: Radiation Analysis
5: Worse Case Analysis
6: Reliability Analysis
7: FEMA
8: First Article Qualification Test Report
9: EMI Test Report
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 16 of 20
ATP TESTS
ATP Testing - Standard Screening
Requirement
Test Method /Condition
External Visual
Initial Electrical
Vibration
O&M- dimensions and mass
Full performance at +25°C
Workmanship non-operating vibration MIL-STD-202, Method 214, 6 grms (50 Hz-2
kHz), 1 minute perpendicular to the board
Post Vibration Electrical
Temperature Cycle
Burn-in
Functional verification at +25°C
MIL-STD-883, Method 1010, Cond. A, 1 cycle, +85°C to -55°C, full performance.
40 Hrs @ 105°C, 50% of rated load
Final Electrical
Full performance at +25°C (deliverable data)
No Damage
External Visual
ATP Testing - Extended Screening
Requirement
Test Method /Condition
External Visual
Yes per O&M–dimensions and mass
Electrical
Read & Record at +25°C
Vibration Operating
Workmanship operating Vibration (outputs monitored)
MIL-STD-202, Method 214 6 grms (50 Hz-2 kHz)
1 minute perpendicular to the board
Post Vibration Electrical
Temperature Cycle
Read & Record at +25°C
10 cycles frombase plate temperature
MIL-STD-883, M1010, Cond. A
+85°C to -55°C
outputs monitored during Thermal cycles
Burn-in
160 Hrs @ 105°C, 50% of rated load
-55°C +25°C +85°C
Final Electrical
External Visual
No Damage
Please contact PMG to evaluate alternate extended screening options.
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 17 of 20
MECHANICAL INTERFACE
Figure 1
The surface on which an SA50 power supply is mounted is recommended to be flat to .005 in or less, with a
surface roughness of 32 microinches or less. The mounting hole pattern and housing footprint for SA50
power supplies is shown in Figure 1.
The fasteners recommended for mounting of SA50 power supplies are 4-40 size fasteners, made from A-286
steel, used with NAS620C4 washers. Representative fasteners include NAS1101, NAS1352, or equivalent.
The recommended torque is 6-8 in-lb.
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 18 of 20
MECHANICAL DIAGRAM & PINOUT
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 19 of 20
ORDERING INFORMATION
SA50-120-5-15T-A-T
H = Radiation Hardened
T = Radiation Tolerant
P = Prototype
Output voltage:
= 5.0 Vout
3R3 = 3.3 Vout
Input Voltage:
120 = 120 Vin
28 = 28 Vin
5
A = Package Style
- side pins
12
14
15
28
= 12 Vout
= 14 Vout
= 15 Vout
= 28 Vout
S= Single Output
D= Dual Output
T= Triple Output
B = Package Style
-top pins
International Traffic in Arms Regulation (ITAR)
The products described in this datasheet are subject to the International Traffic in Arms Regulations (ITAR). They require an approved ex-
port license prior to export from the United States. An export includes release of product or description of technology to foreign national
inside or outside of United States.
Contact:
Kent Brooten
Power Management Group
Phone: 206 790-9743 (USA)
E-mail: PMGsales@microsemi.com
Address:
Microsemi Corporation PMG
14930 East Alondra Blvd
La Mirada, CA 90638-5752
Phone: 714-994-6500
Information furnished by Microsemi is believed to be accurate and reliable. However, no responsibility is assumed by Microsemi for its use, nor for
any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under
any patent or patent rights of Microsemi Corporation.
SA50-120-5-15T Rev A5
© 2013 Microsemi Corporation — Power Management Group
Page 20 of 20
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