SVRFL2800S SERIES
SPACE QUALIFIED HYBRID DC-DC CONVERTERS
Models Available
Input: 18 V to 37.5 V continuous, 50 V transient
100 W, single output of 3.3 V, 5 V, 12 V, 15 V
Qualified to MIL-PRF-38534 Class H and Class K
Designed for TOR Compliance
SVRFL Series DC-DC Converter
1.0 DESCRIPTION
The SVRFL 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 SVRFL 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 SVRFL Series hybrid converter level.
The SVRFL 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 #
5962-13233
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: 3.005” x 1.505” x 0.400”
Max weight: 86 g
Industry standard pinout
Precision seam-welded hermetic metal case
1.1 FEATURES
Up to 100 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
Parallel up to 5 units with current sharing
Output voltage trim up +10% or down -20%
Radiation immune magnetic feedback circuit
No use of optoisolators
Undervoltage lockout
Current limit protection / short circuit protection
1.5 SIMILAR PRODUCTS AND ACCESSORIES
SVRFL
100 W dual output DC-DC converter
SVFL
100 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-001
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
SVRFL2800S - 2.0
Page 1
SVRFL2800S Series
3.2 PERFORMANCE SPECIFICATIONS
Tcase = -55 °C to +125 °C, Vin = +28 V ± 5%, Full Load, Unless Otherwise Specified
SVRFL283R3S
Parameter
INPUT
Voltage2
Current
Continuous
Transient, 1 sec2
INH 1 < 1.5 V
INH 2 < 1 V
No Load
20 Hz to 10 MHz
Turn-On
Turn-Off2
Tcase = 25 °C
Tcase = -55 °C to +125 °C
18
-
-
-
-
-
14.5
13
3.267
3.25
0
0
-
-
-
-
-
-
-
-
-
-
-
0
0
9
4
-10
2
500
68
-
500 V DC, Tcase = 25 °C
Standard package option
SF @ Tcase = 55 °C
425
100
-
-
28
-
3.5
30
55
40
-
-
3.3
3.3
-
-
20
1
2
-
-
350
350
200
280
5
2
-
-
-
-
-
-
-
73
-
525
-
-
4.29
37.5
50
8
70
120
200
17.5
17
3.333
3.35
66
20
120
20
80
50
50
600
500
800
500
20
15
1.5
1
15
12
10
4
600
-
500
600
-
86
-
18
-
-
-
-
-
14.5
13
4.95
4.9
0
0
-
-
-
-
-
-
-
-
-
-
-
0
0
9
4
-20
2
500
72
-
425
100
-
-
28
-
3.5
30
65
60
-
-
5
5
-
-
20
1
1
-
-
360
300
200
300
5
2
-
-
-
-
-
-
-
78
-
525
-
-
4.29
37.5
50
8
70
120
200
17.5
17
5.05
5.1
100
20
120
20
100
50
50
600
500
800
500
20
25
1.5
1
15
12
10
4
600
-
500
600
-
86
-
V
V
mA
mA
mA
mApp
V
V
V
V
W
A
mVpp
mV
mV
W
W
mVpk
µs
mVpk
µs
ms
mVpk
V
V
V
V
%
V
kHz
%
µF
kHz
MΩ
g
MHr
Conditions
3
Min
Typ
Max
Min
SVRFL2805S
Typ
Max
Units
Ripple Current
Undervoltage Lockout
OUTPUT STATIC
Voltage
Power
Current
Ripple Voltage
Line Regulation
Load Regulation
Load Fault Power Dissipation
OUTPUT DYNAMIC
Load Step, Half to Full Load
Line Step2, Vin = 18V to 37.5 V
Turn-On, Vin = 0 to 28 V
FUNCTION
INH 1 Pin Input2
INH 2 Pin Input2
INH 1 Pin Open Circuit Voltage2
INH 2 Pin Open Circuit Voltage2
Voltage Trim Range
SHARE Pin Voltage2
SYNC Frequency Range
GENERAL
Efficiency
Capacitive Load2
Switching Frequency
Isolation
Weight
MTBF (MIL-HDBK-217F)
20 Hz to 10 MHz
Vin = 18 V to 37.5V
No Load to Full Load
Overload2
Short Circuit
Output Transient
Recovery1
Output Transient
Recovery1
Delay
Overshoot
Output Inhibited
Output Inhibited
Output Enabled
Output Enabled
1. Time for output voltage to settle within 1% of steady-state value
2. Verified by qualification testing
3. 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
SVRFL2800S - 2.0
Page 3
SVRFL2800S Series
3.2 PERFORMANCE SPECIFICATIONS
Tcase = -55 °C to +125 °C, Vin = +28 V ± 5%, Full Load, Unless Otherwise Specified
SVRFL2812S
Parameter
INPUT
Voltage2
Current
Continuous
Transient, 1 sec2
INH 1 < 1.5 V
INH 2 < 1 V
No Load
20 Hz to 10 MHz
Turn-On
Turn-Off2
Tcase = 25 °C
Tcase = -55 °C to +125 °C
18
-
-
-
-
-
14.5
13
11.88
11.70
0
0
-
-
-
-
-
-
-
-
-
-
-
0
0
9
4
-10
2
500
79
-
500 V DC, Tcase = 25 °C
Standard package option
SF @ Tcase = 55 °C
425
100
-
-
28
-
3.5
30
80
50
-
-
12
12
-
-
50
1
2
-
-
480
240
600
250
5
20
-
-
-
-
-
-
-
86
-
525
-
-
4.29
37.5
50
8
70
120
200
17.5
17
12.12
12.3
100
8.33
200
20
120
50
50
1000
500
1200
500
20
50
1.5
1
15
12
10
4
600
-
300
600
-
86
-
18
-
-
-
-
-
14.5
13
14.85
14.625
0
0
-
-
-
-
-
-
-
-
-
-
-
0
0
9
4
-20
2
500
80
-
425
100
-
-
28
-
3.5
30
120
50
-
-
15
15
-
-
50
1
2
-
-
500
300
600
300
5
20
-
-
-
-
-
-
-
86
-
525
-
-
4.29
37.5
50
8
70
160
200
17.5
17
15.15
15.375
100
6.67
200
20
120
50
50
1000
500
1200
500
20
50
1.5
1
15
12
10
4
600
-
300
600
-
86
-
V
V
mA
mA
mA
mApp
V
V
V
V
W
A
mVpp
mV
mV
W
W
mVpk
µs
mVpk
µs
ms
mVpk
V
V
V
V
%
V
kHz
%
µF
kHz
MΩ
g
MHr
Conditions
3
Min
Typ
Max
Min
SVRFL2815S
Typ
Max
Units
Ripple Current
Undervoltage Lockout
OUTPUT STATIC
Voltage
Power
Current
Ripple Voltage
Line Regulation
Load Regulation
Load Fault Power Dissipation
OUTPUT DYNAMIC
Load Step, Half to Full Load
Line Step2, Vin = 18V to 37.5 V
Turn-On, Vin = 0 to 28 V
FUNCTION
INH 1 Pin Input2
INH 2 Pin Input2
INH 1 Pin Open Circuit Voltage2
INH 2 Pin Open Circuit Voltage2
Voltage Trim Range
SHARE Pin Voltage2
SYNC Frequency Range
GENERAL
Efficiency
Capacitive Load2
Switching Frequency
Isolation
Weight
MTBF (MIL-HDBK-217F)
20 Hz to 10 MHz
Vin = 18 V to 37.5V
No Load to Full Load
Overload2
Short Circuit
Output Transient
Recovery1
Output Transient
Recovery1
Delay
Overshoot
Output Inhibited
Output Inhibited
Output Enabled
Output Enabled
1. Time for output voltage to settle within 1% of steady-state value
2. Verified by qualification testing
3. 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
SVRFL2800S - 2.0
Page 4
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