SVRTR2800D SERIES
SPACE QUALIFIED HYBRID DC-DC CONVERTERS
Models Available
Input: 18 V to 37.5 V continuous, 50 V transient
40 W, dual outputs of ±12 V, ±15 V
Qualified to MIL-PRF-38534 Class H and Class K
Designed for TOR Compliance
SVRTR Series DC-DC Converter
1.0 DESCRIPTION
The SVRTR Series of space qualified DC-DC converters is
specifically designed for the harsh radiation environment of
space applications and is designed in accordance with
Aerospace TOR requirements. Performance is guaranteed
through the use of hardened semiconductor components,
radiation lot acceptance testing (RLAT) of non-hardened
components, and analysis. The SVRTR Series has been
characterized for Total Ionizing Dose (TID) performance
including Enhanced Low Dose Rate Sensitivity (ELDRS) and for
Single Event Effects (SEE) according to VPT’s DLA-approved
Radiation Hardness Assurance (RHA) plan per MIL-PRF-38534,
Appendix G, Level R. Characterization is performed at both the
component level and at the SVRTR Series hybrid converter level.
The SVRTR Series of DC-DC converters is radiation hardened
and suited for use in low Earth orbit (LEO), medium Earth orbit
(MEO), geostationary orbit (GEO), deep space, and launch
vehicle programs.
1.2 SPACE LEVEL CHARACTERIZATIONS
Guaranteed TID performance to 100 krad(Si) including ELDRS
SEE performance to 85 MeV-cm /mg. Transients are fully
characterized for cross section and magnitude
Worst-case analysis, stress, radiation, reliability reports available
2
1.3 MANUFACTURING AND COMPLIANCE
Qualified to MIL-PRF-38534 Class H and Class K,
DLA SMD #
5962-13210
Available compliant to MIL-HDBK-1547 and Aerospace TOR
component level element evaluation
MIL-PRF-38534 element evaluated components
MIL-STD-461 C/D/E/F when used with appropriate VPT EMI filter
Manufactured in a MIL-PRF-38534 Class H and Class K facility
MIL-STD-883
ISO-9001
1.4 PACKAGING
Low-profile: 2.890” x 1.125” x 0.405”
Max weight: 55 g
Industry standard pinout
Precision seam-welded hermetic metal case
Flanged and Non-flanged versions available
1.1 FEATURES
Up to 40 W output power
Wide input voltage range: 18 V to 37.5 V plus 50 V transient
Continuous operation over full military temperature range of
-55 °C to +125 °C with no power derating
Very low output noise
Radiation immune magnetic feedback circuit
No use of optoisolators
Undervoltage lockout
Current limit protection / short circuit protection
1.5 SIMILAR PRODUCTS AND ACCESSORIES
SVRTR
40 W single output DC-DC converter
SVTR
40 W space qualified DC-DC converter, 30 krad(Si)
Custom versions available
EMI filters
Non-isolated, space qualified
point of load converters
Use with Thermal Pad
TP-003
Products and reports described in this datasheet are subject to all export license restrictions and regulations which may include but are not limited to ITAR
(International Traffic in Arms Regulations) and the Export Administration and Foreign Assets Control Regulations. Further restrictions may apply. Contact VPT
sales for details.
Sales Information
Phone:(425) 353-3010
E-mail:
vptsales@vptpower.com
Fax: (425) 353-4030
Web:
www.vptpower.com
SVRTR2800D - 2.0
Page 1
SVRTR2800D Series
3.2 PERFORMANCE SPECIFICATIONS
Tcase = -55 °C to +125 °C, Vin = +28 V ± 5%, Full Load
1
, Unless Otherwise Specified
SVRTR2812D
Parameter
INPUT
Voltage
Current
Ripple Current
Undervoltage Lockout
OUTPUT STATIC
Voltage
+Vout, Tcase = 25 °C
+Vout, Tcase = -55 °C to +125 °C
-Vout, Tcase = 25 °C
-Vout, Tcase = -55 °C to +125 °C
Total
Either Output
Current2
Ripple Voltage
Line Regulation
Load Regulation
Cross Regulation, -Vout
Load Fault Power Dissipation
OUTPUT DYNAMIC
Load Step, Half to Full Load, Either Output
Line Step4, Vin = 18V to 37.5 V
Turn-On, Vin = 0 to 28 V
FUNCTION
INH Pin Input4
INH Pin Open Circuit Voltage4
SYNC Frequency Range
GENERAL
Efficiency
Capacitive Load4
Switching Frequency
Isolation
Weight
MTBF (MIL-HDBK-217F)
78
-
500 V DC, Tcase = 25 °C
Non-flanged package option
Flanged package option
SF @ Tcase = 55 °C
435
100
-
-
-
83
-
525
-
-
-
4.309
-
300
550
-
52
55
-
80
-
435
100
-
-
-
84
-
525
-
-
-
4.309
-
300
550
-
52
55
-
%
µF
kHz
MΩ
g
g
MHr
Output Inhibited
Output Enabled
0
9
500
-
12.5
-
1.5
14
600
0
9
500
-
12.5
-
1.5
14
600
V
V
kHz
Output Transient
Recovery3
Output Transient
Recovery3
Delay
Overshoot
-
-
-
-
-
-
300
200
600
300
10
10
500
400
1200
500
20
50
-
-
-
-
-
-
300
200
600
300
10
20
500
400
1200
500
20
50
mVpk
µs
mVpk
µs
ms
mVpk
Total
Either Output
20 Hz to 10 MHz
+Vout, V
IN
= 18 V to 37.5 V
-Vout, V
IN
= 18 V to 37.5 V
+Vout, No Load to Full Load
-Vout, No Load to Full Load
+Vout: 60% load, -Vout: 40% load
+Vout: 40% load, -Vout: 60% load
Overload4
Short Circuit
11.88
11.70
11.80
11.52
0
0
0
0
-
-
-
-
-
-
-
-
12
12
12
12
-
-
-
-
25
1
10
3
10
300
-
-
12.12
12.3
12.2
12.48
40
24
3.3
2
150
20
200
50
200
650
15
15
14.85
14.625
14.7
14.45
0
0
0
0
-
-
-
-
-
-
-
-
15
15
15
15
-
-
-
-
25
1
10
1
10
250
-
-
15.15
15.375
15.3
15.55
40
24
2.67
1.6
130
20
200
50
200
650
14
14
V
V
V
V
W
W
A
A
mVpp
mV
mV
mV
mV
mV
W
W
Continuous
Transient, 1 sec4
INH < 1.5 V
No Load
20 Hz to 10 MHz
Turn-On
Turn-Off4
18
-
-
-
-
14.5
13
28
-
5
45
50
-
-
37.5
50
8
90
110
17.5
16.5
18
-
-
-
-
14.5
13
28
-
5
45
50
-
-
37.5
50
8
90
110
17.5
16.5
V
V
mA
mA
mApp
V
V
Conditions
5
Min
Typ
Max
Min
SVRTR2815D
Typ
Max
Units
Power2
1. Half load at +Vout and half load at -Vout
2. Up to 60% of the total power or current can be drawn from either of the two
outputs.
3. Time for output voltage to settle within 1% of steady-state value
4. Verified by qualification testing
5. End-of-Life performance includes aging and radiation degradation and is within
standard limits except where noted
Sales Information
Phone:(425) 353-3010
E-mail:
vptsales@vptpower.com
Fax: (425) 353-4030
Web:
www.vptpower.com
SVRTR2800D - 2.0
Page 3
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