SVFL2800S SERIES
SPACE QUALIFIED HYBRID DC-DC CONVERTERS
Models Available
Input: 16 V to 40 V continuous, 50 V transient
120 W, single output of 3.3 V, 5 V, 12 V, 15 V
Qualified to MIL-PRF-38534 Class H and Class K
SVFL Series DC-DC Converter
1.0 DESCRIPTION
The SVFL Series of space qualified DC-DC converters is
specifically designed for the harsh radiation environment of
space applications. Performance is guaranteed through the use
of hardened semiconductor components, radiation lot
acceptance testing (RLAT) of non-hardened components, and
analysis. The SVFL 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 P. Characterization is performed at both the component
level and at the SVFL Series hybrid converter level.
The SVFL Series of DC-DC converters is radiation tolerant 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 30 krad(Si) including ELDRS
SEE performance to 44 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 #
5962-11217
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
Standard and optional side-flanged versions available
1.1 FEATURES
•
•
•
•
•
•
•
•
•
•
Up to 100 W output power
Wide input voltage range: 16 V to 40 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
•
•
•
•
•
•
SVFL
120 W dual output DC-DC converter
SVRFL
100 W space qualified DC-DC converter, 100 krad(Si)
Custom versions available
EMI filters
Non-isolated, space qualified
point of load converters
Use with Thermal Pad
TP-001
Sales Information
Phone:(425) 353-3010
E-mail:
vptsales@vptpower.com
Fax: (425) 353-4030
Web:
www.vptpower.com
SVFL2800S - 4.0
Page 1
SVFL2800S Series
3.2 PERFORMANCE SPECIFICATIONS
Parameter
INPUT
Voltage
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
16
-
-
-
-
-
14.5
13.5
3.267
3.25
0
0
20 Hz to 10 MHz
Vin = 16 V to 40 V
No Load to Full Load
Overload2
Short Circuit
OUTPUT DYNAMIC
Load Step, Half to Full Load
Line Step2, Vin = 16 V to 40 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)
POST-RAD END-OF-LIFE3
Input Ripple Current
Output Voltage
67
-
500 V DC, Tcase = 25 °C
Standard and Optional Side-Flanged
SF @ Tcase = 55 °C
425
100
-
-
-
3.24
72
-
525
-
-
727
-
-
-
1000
600
-
86
-
140
3.35
72
-
425
100
-
-
-
4.89
77
-
525
-
-
727
-
-
-
1000
600
-
86
-
140
5.10
%
µF
kHz
MΩ
g
kHr
mApp
V
Output Inhibited
Output Inhibited
Output Enabled
Output Enabled
0
0
10.5
4
-10
2
500
-
-
-
-
-
-
-
1.5
1
15
12
+10
4
600
0
0
10.5
4
-20
2
500
-
-
-
-
-
-
-
1.5
1
15
12
+10
4
600
V
V
V
V
%
V
kHz
Output Transient
Recovery1
Output Transient
Recovery1
Delay
Overshoot
-
-
-
-
-
-
140
260
300
300
5
0
400
500
600
500
20
15
-
-
-
-
-
-
160
260
300
300
5
0
400
500
600
500
20
25
mVpk
µs
mVpk
µs
ms
mVpk
-
-
-
-
-
28
-
1
40
60
25
-
-
3.3
3.3
-
-
15
2
2
-
-
40
50
6
70
120
80
16.0
15.5
3.333
3.35
66
20
80
20
80
50
50
16
-
-
-
-
-
14.5
13.5
4.95
4.925
0
0
-
-
-
-
-
28
-
1
40
65
35
-
-
5
5
-
-
15
2
2
-
-
40
50
6
70
120
80
16.0
15.5
5.05
5.075
100
20
80
20
100
50
50
V
V
mA
mA
mA
mApp
V
V
V
V
W
A
mVpp
mV
mV
W
W
Conditions
Tcase = -55 °C to +125 °C, Vin = +28 V ± 5%, Full Load, Unless Otherwise Specified
Min
SVFL283R3S
Typ
Max
Min
SVFL2805S
Typ
Max
Units
Ripple Current
Undervoltage Lockout
OUTPUT STATIC
Voltage
Power4
Current4
Ripple Voltage
Line Regulation
Load Regulation
Load Fault Power Dissipation
Tcase = -55 °C to +125 °C
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
4. Derate linearly to 0 at 135 °C
Sales Information
Phone:(425) 353-3010
E-mail:
vptsales@vptpower.com
Fax: (425) 353-4030
Web:
www.vptpower.com
SVFL2800S - 4.0
Page 3
SVFL2800S Series
3.2 PERFORMANCE SPECIFICATIONS (CONTINUED)
Parameter
INPUT
Voltage
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
16
-
-
-
-
-
14.5
13.5
11.88
11.82
0
0
20 Hz to 10 MHz
Vin = 16 V to 40 V
No Load to Full Load
Overload2
Short Circuit
OUTPUT DYNAMIC
Load Step, Half to Full Load
Line Step2, Vin = 16 V to 40 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)
POST-RAD END-OF-LIFE3
Input Ripple Current
Output Voltage
79
-
500 V DC, Tcase = 25 °C
Standard and Optional Side-Flanged
SF @ Tcase = 55 °C
425
100
-
-
-
11.66
85
-
525
-
-
727
-
-
-
500
600
-
86
-
140
12.28
80
-
425
100
-
-
-
14.565
85
-
525
-
-
727
-
-
-
500
600
-
86
-
140
15.355
%
µF
kHz
MΩ
g
kHr
mApp
V
Output Inhibited
Output Inhibited
Output Enabled
Output Enabled
0
0
10.5
4
-20
2
500
-
-
-
-
-
-
-
1.5
1
15
12
+10
4
600
0
0
10.5
4
-20
2
500
-
-
-
-
-
-
-
1.5
1
15
12
+10
4
600
V
V
V
V
%
V
kHz
Output Transient
Recovery1
Output Transient
Recovery1
Delay
Overshoot
-
-
-
-
-
-
570
290
600
300
5
0
1000
500
1200
500
20
50
-
-
-
-
-
-
640
260
600
300
5
0
1000
500
1200
500
20
50
mVpk
µs
mVpk
µs
ms
mVpk
-
-
-
-
-
28
-
1
40
80
30
-
-
12
12
-
-
25
2
2
-
-
40
50
6
70
120
80
16.0
15.5
12.12
12.18
110
9.2
80
20
120
50
50
16
-
-
-
-
-
14.5
13.5
14.85
14.775
0
0
-
-
-
-
-
28
-
1
40
85
30
-
-
15
15
-
-
25
2
2
-
-
40
50
6
70
120
80
16.0
15.5
15.15
15.225
120
8
80
20
120
50
50
V
V
mA
mA
mA
mApp
V
V
V
V
W
A
mVpp
mV
mV
W
W
Conditions
Tcase = -55 °C to +125 °C, Vin = +28 V ± 5%, Full Load, Unless Otherwise Specified
Min
SVFL2812S
Typ
Max
Min
SVFL2815S
Typ
Max
Units
Ripple Current
Undervoltage Lockout
OUTPUT STATIC
Voltage
Power4
Current4
Ripple Voltage
Line Regulation
Load Regulation
Load Fault Power Dissipation
Tcase = -55 °C to +125 °C
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
4. Derate linearly to 0 at 135 °C
Sales Information
Phone:(425) 353-3010
E-mail:
vptsales@vptpower.com
Fax: (425) 353-4030
Web:
www.vptpower.com
SVFL2800S - 4.0
Page 4
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