SVRHF2800S SERIES
SPACE QUALIFIED HYBRID DC-DC CONVERTERS
Models Available
Input: 18 V to 37.5 V continuous, 50 V transient
15 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
SVRHF Series DC-DC Converter
1.0 DESCRIPTION
The SVRHF 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 SVRHF 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 SVRHF Series hybrid converter level.
The SVRHF 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 #
5962-13231
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: 2.00” x 1.130” x 0.355”
Max weight: 27 g
Industry standard pinout
Precision projection-welded hermetic metal case
Flanged and Non-flanged versions available
1.1 FEATURES
Up to 15 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
SVRHF
15 W dual output DC-DC converter
SVHF
20 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-002
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
SVRHF2800S - 2.0
Page 1
SVRHF2800S Series
3.2 PERFORMANCE SPECIFICATIONS
Tcase = -55 °C to +125 °C, Vin = +28 V ± 5%, Full Load, Unless Otherwise Specified
SVRHF283R3S
Parameter
INPUT
Voltage
Current
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 Pin Input2
INH Pin Open Circuit Voltage2
GENERAL
Efficiency
Capacitive Load2
Switching Frequency
Isolation
Weight
MTBF (MIL-HDBK-217F)
POST-RAD END-OF-LIFE LIMITS3
Input Ripple Current
Output Ripple Voltage
Output Voltage
67
-
500 V DC, Tcase = 25 °C
Non-flanged package option
Flanged package option
SF @ Tcase = 55 °C
350
100
-
-
-
-
-
3.25
72
-
450
-
-
-
4.388
-
-
-
-
500
500
-
24
27
-
150
200
3.35
72
-
350
100
-
-
-
-
-
4.9
78
-
450
-
-
-
4.388
-
-
-
-
500
500
-
24
27
-
200
200
5.1
%
µF
kHz
MΩ
g
g
MHr
mA
mVpp
V
Output Inhibited
Output Enabled
0
9
-
11
1.5
13
0
9
-
11
1.5
13
V
V
Output Transient
Recovery1
Output Transient
Recovery1
Delay
Overshoot
-
-
-
-
-
-
100
250
200
430
13
2
150
350
280
520
20
15
-
-
-
-
-
-
200
270
270
280
11
3
250
350
320
340
20
25
mVpk
µs
mVpk
µs
ms
mVpk
Tcase = 25 °C
Tcase = -55 °C to +125 °C
3.267
3.25
0
0
-
-
-
-
-
3.3
3.3
-
-
50
0.1
11
-
-
3.333
3.35
10
3
120
10
50
8
8
4.95
4.925
0
0
-
-
-
-
-
5
5
-
-
50
0.1
8
-
-
5.05
5.075
15
3
120
10
50
9
8
V
V
W
A
mVpp
mV
mV
W
W
Continuous
Transient, 1 sec2
INH < 1.5 V
No Load
20 Hz to 10 MHz
Turn-On
Turn-Off2
18
-
-
-
-
14
13
28
-
5
30
55
-
-
37.5
50
8
65
120
17.8
17.5
18
-
-
-
-
14
13
28
-
5
30
65
-
-
37.5
50
8
65
120
17.8
17.5
V
V
mA
mA
mApp
V
V
Conditions
Min
Typ
Max
Min
SVRHF2805S
Typ
Max
Units
20 Hz to 10 MHz
Vin = 18 V to 37.5V
No Load to Full Load
Overload2
Short Circuit
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
Sales Information
Phone:(425) 353-3010
E-mail:
vptsales@vptpower.com
Fax: (425) 353-4030
Web:
www.vptpower.com
SVRHF2800S - 2.0
Page 3
SVRHF2800S Series
3.2 PERFORMANCE SPECIFICATIONS
Tcase = -55 °C to +125 °C, Vin = +28 V ± 5%, Full Load, Unless Otherwise Specified
SVRHF2812S
Parameter
INPUT
Voltage
Current
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 Pin Input2
INH Pin Open Circuit Voltage2
GENERAL
Efficiency
Capacitive Load2
Switching Frequency
Isolation
Weight
MTBF (MIL-HDBK-217F)
POST-RAD END-OF-LIFE LIMITS3
Input Ripple Current
Output Ripple Voltage
Output Voltage
76
-
500 V DC, Tcase = 25 °C
Non-flanged package option
Flanged package option
SF @ Tcase = 55 °C
350
100
-
-
-
-
-
11.7
83
-
450
-
-
-
4.388
-
-
-
-
300
500
-
24
27
-
260
120
12.3
79
-
350
100
-
-
-
-
-
14.63
84
-
450
-
-
-
4.388
-
-
-
-
300
500
-
24
27
-
240
150
15.37
%
µF
kHz
MΩ
g
g
MHr
mA
mVpp
V
Output Inhibited
Output Enabled
0
9
-
11
1.5
13
0
9
-
11
1.5
13
V
V
Output Transient
Recovery1
Output Transient
Recovery1
Delay
Overshoot
-
-
-
-
-
-
460
240
400
270
10
20
600
350
600
400
20
50
-
-
-
-
-
-
530
280
400
220
10
20
700
350
600
400
20
50
mVpk
µs
mVpk
µs
ms
mVpk
Tcase = 25 °C
Tcase = -55 °C to +125 °C
11.88
11.82
0
0
-
-
-
-
-
12
12
-
-
30
0.1
3
-
-
12.12
12.18
15
1.25
120
10
30
8
8
14.85
14.775
0
0
-
-
-
-
-
15
15
-
-
50
0.1
3
-
-
15.15
15.225
15
1
150
10
30
8
8
V
V
W
A
mVpp
mV
mV
W
W
Continuous
Transient, 1 sec2
INH < 1.5 V
No Load
20 Hz to 10 MHz
Turn-On
Turn-Off2
18
-
-
-
-
14
13
28
-
5
43
65
-
-
37.5
50
8
85
120
17.8
17.5
18
-
-
-
-
14
13
28
-
5
65
60
-
-
37.5
50
8
100
120
17.8
17.5
V
V
mA
mA
mApp
V
V
Conditions
Min
Typ
Max
Min
SVRHF2815S
Typ
Max
Units
20 Hz to 10 MHz
Vin = 18 V to 37.5V
No Load to Full Load
Overload2
Short Circuit
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
Sales Information
Phone:(425) 353-3010
E-mail:
vptsales@vptpower.com
Fax: (425) 353-4030
Web:
www.vptpower.com
SVRHF2800S - 2.0
Page 4
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