DVSA2800D Series
HIGH RELIABILITY HYBRID
DC-DC CONVERTERS
DESCRIPTION
The DVSA series of high reliability DC-DC converters
is operable over the full military (-55 °C to +125 °C)
temperature range with no power derating. Unique
to the DVSA series is a magnetic feedback circuit
that is radiation immune. Operating at a nominal
fixed frequency of 450 kHz, these regulated, isolated
units utilize well controlled undervoltage lockout
circuitry to eliminate slow start-up problems.
These converters are designed and manufactured in
a facility qualified to ISO9001 and certified to MIL-
PRF-38534 and MIL-STD-883.
This product may incorporate one or more of the
following U.S. patents:
5,784,266
5,790,389
5,963,438
5,999,433
6,005,780
6,084,792
6,118,673
FEATURES
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High Reliability
Very Low Output Noise
Wide Input Voltage Range: 15 to 50 Volts per
MIL-STD-704
Up to 6 Watts Output Power
Radiation Immune Magnetic Feedback Circuit
NO Use of Optoisolators
Undervoltage Lockout
Indefinite Short Circuit Protection
Current Limit Protection
Industry Standard Pinout
High Input Transient Voltage: 80 Volts for 1 sec
per MIL-STD-704A
Radiation Hardened Version Available
Precision Projection Welded Hermetic Package
High Power Density: > 19 W/in
3
Custom Versions Available
Additional Environmental Screening Available
Meets MIL-STD-461C and MIL-STD-461D EMC
Requirements When Used With a DVMA28 EMI
Filter
MIL-PRF-38534 Element Evaluated
Components
Figure 1
– DVSA2800D DC-DC Converter
(Not
To Scale)
1X002DSG
11314 4 Avenue
West, Suite 206
Everett, WA 98204
http://www.vpt-inc.com
th
Sales Information:
Phone: (425) 353-3010
Fax: (425) 353-4030
E-mail: vptsales@vpt-inc.com
1
DVSA2800D Series
SPECIFICATIONS
(T
CASE
= -55°C to +125°C, V
IN
= +28V ± 5%, Full Load
5
, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
Input Voltage (Transient, 1 second)
Output Power
1
Power Dissipation (Full Load, T
CASE
= +125°C)
50 V
DC
80 Volts
6 Watts
2.5 Watts
Junction Temperature Rise to Case
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight (Maximum)
DVSA2805D
Min
Typ
Max
Min
DVSA2812D
Typ
Max
+10°C
-65°C to +150°C
270°C
15 Grams
Parameter
Conditions
Units
STATIC
INPUT
4
Voltage
Current
Ripple Current
Inhibit Pin Input
UVLO Turn On
UVLO Turn Off
OUTPUT
5
Voltage
4
4
4
Continuous
Transient, 1 sec
Inhibited
No Load
Full Load , 20Hz to 10MHz
5
15
-
-
-
-
0
9.0
12.0
11.0
28
-
-
30
30
-
11.0
-
-
5.0
5.0
5.0
5.0
-
-
-
-
10
50
10
50
-
72
-
-
-
450
-
457
50
80
6
60
50
1.5
13.0
14.8
14.5
5.05
5.075
5.20
5.25
5
3.5
0.7
50
20
200
50
200
450
-
3
3
500
500
-
-
15
-
-
-
-
0
9.0
12.0
11.0
11.88
11.82
11.80
11.52
0
0
0
-
-
-
-
-
-
72
-
-
-
350
100
-
28
-
-
30
30
-
11.0
-
-
12.0
12.0
12.0
12.0
-
-
-
-
10
50
10
50
-
77
-
-
-
450
-
457
50
80
6
60
50
1.5
13.0
14.8
14.5
12.12
12.18
12.20
12.48
6
4.2
0.35
50
20
200
50
200
450
-
3
3
500
500
-
-
V
V
mA
mA
mA
p-p
V
V
V
V
V
V
V
V
W
W
A
mV
p-p
mV
mV
mV
mV
mV
%
W
W
µF
kHz
MΩ
kHrs
Inhibit Pin Open Circuit Voltage
+V
OUT
+V
OUT
-V
OUT
-V
OUT
Power
3,6
T
CASE
= 25°C
T
CASE
= -55°C to +125°C
T
CASE
= 25°C
T
CASE
= -55°C to +125°C
Either Output
Either Output
Full Load , 20Hz to 10MHz
V
IN
= 16V to 40V
V
IN
= 16V to 40V
No Load to Full Load
No Load to Full Load
5
5,7
5
4.95
4.925
4.80
4.75
0
0
0
-
-
-
-
-
-
66
-
-
-
350
100
-
Total
±V
OUT
±V
OUT
±V
OUT
+V
OUT
-V
OUT
+V
OUT
-V
OUT
-V
OUT
Current
3,6
Ripple Voltage
Line Regulation
Load Regulation
Cross Regulation
EFFICIENCY
+Load 70%, -Load 30%
+Load 30%, -Load 70%
Full Load
Overload
5
4
LOAD FAULT POWER DISSIPATION
CAPACITIVE LOAD
ISOLATION
MTBF (MIL-HDBK-217F)
See notes next page.
4
Short Circuit
Either Output
500 V
DC
, T
CASE
= 25°C
AIF @ T
C
= 55°C
SWITCHING FREQUENCY
1X002DSG
2
DVSA2800D Series
SPECIFICATIONS
(T
CASE
= -55°C to +125°C, V
IN
= +28V ± 5%, Full Load
5
, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
Input Voltage (Transient, 1 second)
Output Power
1
Power Dissipation (Full Load, T
CASE
= +125°C)
50 V
DC
80 Volts
6 Watts
2.5 Watts
Junction Temperature Rise to Case
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight (Maximum)
DVSA2805D
Min
Typ
Max
Min
DVSA2812D
Typ
Max
+10°C
-65°C to +150°C
270°C
15 Grams
Parameter
Conditions
Units
DYNAMIC
Load Step Output Transient
Load Step Recovery
Line Step Recovery
Turn On Delay
Turn On Overshoot
2
4
±V
OUT
±V
OUT
±V
OUT
Half Load to Full Load
V
IN
= 16V to 40V
V
IN
= 0V to 28V
-
-
-
-
-
-
-
-
500
300
10
-
300
400
1000
700
20
25
-
-
-
-
-
-
-
-
600
300
10
-
300
450
1200
500
20
50
mV
PK
µSec
mV
PK
µSec
mSec
mV
PK
Line Step Output Transient
2, 4
Notes:
1.
2.
3.
4.
5.
6.
7.
Dependant on output voltage.
Time for output voltage to settle within 1% of its nominal value.
Derate linearly to 0 at 135°C.
Verified by qualification testing.
Half load at +V
OUT
and half load at –V
OUT
.
Up to 70% of the total power or current can be drawn from any one of the two outputs.
5% Load to Full Load at -55°C.
1X002DSG
3
DVSA2800D Series
SPECIFICATIONS
(T
CASE
= -55°C to +125°C, V
IN
= +28V ± 5%, Full Load
5
, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
Input Voltage (Transient, 1 second)
Output Power
1
Power Dissipation (Full Load, T
CASE
= +125°C)
50 V
DC
80 Volts
6 Watts
2.5 Watts
Junction Temperature Rise to Case
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight (Maximum)
DVSA2815D
Min
Typ
Max
+10°C
-65°C to +150°C
270°C
15 Grams
Parameter
Conditions
Units
STATIC
INPUT
4
Voltage
Current
Ripple Current
Inhibit Pin Input
UVLO Turn On
UVLO Turn Off
OUTPUT
5
Voltage
4
4
4
Continuous
Transient, 1 sec
Inhibited
No Load
Full Load , 20Hz to 10MHz
5
15
-
-
-
-
0
9.0
12.0
11.0
28
-
-
30
30
-
11.0
-
-
15.0
15.0
15.0
15.0
-
-
-
-
10
50
10
50
-
79
-
-
-
450
-
457
50
80
6
60
50
1.5
13.0
14.8
14.5
15.15
15.225
15.20
15.60
6
4.2
0.28
50
20
200
50
200
450
-
3
3
500
500
-
-
V
V
mA
mA
mA
p-p
V
V
V
V
V
V
V
V
W
W
A
mV
p-p
mV
mV
mV
mV
mV
%
W
W
µF
kHz
MΩ
kHrs
Inhibit Pin Open Circuit Voltage
+V
OUT
+V
OUT
-V
OUT
-V
OUT
Power
3,6
T
CASE
= 25°C
T
CASE
= -55°C to +125°C
T
CASE
= 25°C
T
CASE
= -55°C to +125°C
Either Output
Either Output
Full Load , 20Hz to 10MHz
V
IN
= 16V to 40V
V
IN
= 16V to 40V
No Load to Full Load
No Load to Full Load
5
5,7
5
14.85
14.775
14.80
14.40
-
-
-
-
-
-
-
-
-
73
-
-
-
350
100
-
Total
±V
OUT
±V
OUT
±V
OUT
+V
OUT
-V
OUT
+V
OUT
-V
OUT
-V
OUT
Current
3,6
Ripple Voltage
Line Regulation
Load Regulation
Cross Regulation
EFFICIENCY
+Load 70%, -Load 30%
+Load 30%, -Load 70%
Full Load
Overload
5
4
LOAD FAULT POWER DISSIPATION
CAPACITIVE LOAD
ISOLATION
MTBF (MIL-HDBK-217F)
See notes next page.
4
Short Circuit
Either Output
500 V
DC
, T
CASE
= 25°C
AIF @ T
C
= 55°C
SWITCHING FREQUENCY
1X002DSG
4
DVSA2800D Series
SPECIFICATIONS
(T
CASE
= -55°C to +125°C, V
IN
= +28V ± 5%, Full Load
5
, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
Input Voltage (Transient, 1 second)
Output Power
1
Power Dissipation (Full Load, T
CASE
= +125°C)
50 V
DC
80 Volts
6 Watts
2.5 Watts
Junction Temperature Rise to Case
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight (Maximum)
DVSA2815D
Min
Typ
Max
+10°C
-65°C to +150°C
270°C
15 Grams
Parameter
Conditions
Units
DYNAMIC
Load Step Output Transient
Load Step Recovery
Line Step Recovery
Turn On Delay
Turn On Overshoot
2
4
±V
OUT
±V
OUT
±V
OUT
Half Load to Full Load
V
IN
= 16V to 40V
V
IN
= 0V to 28V
-
-
-
-
-
-
-
-
500
300
10
-
300
500
1200
500
20
50
mV
PK
µSec
mV
PK
µSec
mSec
mV
PK
Line Step Output Transient
2, 4
Notes:
1.
2.
3.
4.
5.
6.
7.
Dependant on output voltage.
Time for output voltage to settle within 1% of its nominal value.
Derate linearly to 0 at 135°C.
Verified by qualification testing.
Half load at +V
OUT
and half load at –V
OUT
.
Up to 70% of the total power or current can be drawn from any one of the two outputs.
5% Load to Full Load at -55°C.
1X002DSG
5
PCB Design
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