DVST2800T Series
HIGH RELIABILITY
DC-DC CONVERTERS
DESCRIPTION
The DVST series of high reliability DC-DC converters
contains internal EMI filtering and meets MIL-STD-
461C and MIL-STD-461D for conducted emissions,
providing a one piece COTS solution for power
conversion applications. The DVST series is
operable over a wide (-55°C to +100°C) temperature
range with no power derating. Unique to the DVST
series is a magnetic feedback circuit that is radiation
immune. The three low noise outputs are fully
isolated from each other, allowing for maximum
flexibility in system design.
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
•
•
•
•
•
•
•
•
•
•
•
•
Up to 30 Watts Output Power
Three Fully Isolated Outputs
Wide Input Voltage Range: 15 to 50 Volts per
MIL-STD-704 with 80 Volt Transient for 1 sec
Internal Filter Meets MIL-STD-461C and MIL-
STD-461D Conducted Emissions Requirements
NO Use of Optoisolators
Undervoltage Lockout
Indefinite Short Circuit Protection
Current Limit Protection
Low Output Noise
Custom Versions Available
Low Profile (0.380 inches) Package
Military Environmental Screening Available
Figure 1
– DVST2800T DC-DC Converter
(Not
To Scale)
11314 4th Avenue
West, Suite 206
Everett, WA 98204
http://www.vpt-inc.com
Sales Information:
Phone: (425) 353-3010
Fax: (425) 353-4030
E-mail: vptsales@vpt-inc.com
DS90054E
1
DVST2800T Series
SPECIFICATIONS
(T
CASE
= -55°C to +100°C, V
IN
= +28V ± 5%, Full Load, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
Input Voltage (Transient, 1 second)
Output Power
1
Power Dissipation (Full Load, T
CASE
= +100°C)
INPUT
Parameter
STATIC
INPUT
Voltage
Current
Inhibit Pin Input
Inhibit Pin Open Circuit Voltage
UVLO Turn On
UVLO Turn Off
SWITCHING FREQUENCY
ISOLATION Input / Output / Case
500 V
DC
11.8
225
100
325
Continuous
Transient, 1 sec
Inhibited
No Load
0
11.0
1.6
65
15
28
50
80
5.0
100
1.5
14.0
14.9
V
V
mA
mA
V
V
V
V
kHz
MΩ
50 V
DC
80 Volts
30 Watts
15 Watts
Operating Case Temperature
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight (Maximum)
-55°C to +100°C
-55°C to +125°C
270°C
100 Grams
Conditions
Min
DVST2800T
Typ
Max
Units
MAIN OUTPUT
Parameter
STATIC
OUTPUT
Voltage
Power
2
2
Conditions
DVST283R3xxyyT
Min
Typ
3.30
3.30
DVST285xxyyT
Min
4.95
4.90
0
0
20
5
10
76
Units
Max
3.34
3.37
15
4.5
Typ
5.00
5.00
Max
5.05
5.10
20
4.0
50
20
30
1000
V
V
W
A
mV
p-p
mV
mV
%
μF
mV
PK
μSec
mV
PK
μSec
mSec
mV
PK
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
T
CASE
= 25°C
T
CASE
= -55°C to +100°C
3.26
3.23
0
0
Current
Ripple Voltage
Line Regulation
Load Regulation
EFFICIENCY
CAPACITIVE LOAD
Full Load, 20Hz to 10MHz
V
IN
= 15V to 50V
No Load to Full Load
20
5
10
73
50
20
30
1000
DYNAMIC
Load Step Output Transient
Load Step Recovery
Line Step Recovery
Turn On Delay
Turn On Overshoot
3
V
OUT
V
OUT
V
OUT
Half Load to Full Load
V
IN
= 15V to 50V
V
IN
= 0V to 28V
200
200
400
400
15
0
400
400
600
600
20
30
200
200
400
400
15
0
400
400
600
600
20
50
Line Step Output Transient
3
DS90054E
2
DVST2800T Series
SPECIFICATIONS
(T
CASE
= -55°C to +100°C, V
IN
= +28V ± 5%, Full Load, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
Input Voltage (Transient, 1 second)
Output Power
1
Power Dissipation (Full Load, T
CASE
= +100°C)
MAIN OUTPUT
Parameter
STATIC
OUTPUT
Voltage
Power
2
2
50 V
DC
80 Volts
30 Watts
15 Watts
Operating Case Temperature
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight (Maximum)
-55°C to +100°C
-55°C to +125°C
270°C
100 Grams
Conditions
DVST281R8xxyyT
Min
Typ
1.80
1.80
DVST286R25xxyyT
Min
6.19
6.12
0
0
20
5
10
76
Units
Max
1.82
1.84
13.5
7.5
Typ
6.25
6.25
Max
6.31
6.38
20
3.2
50
20
30
1000
V
V
W
A
mV
p-p
mV
mV
%
μF
mV
PK
μSec
mV
PK
μSec
mSec
mV
PK
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
T
CASE
= 25°C
T
CASE
= -55°C to +100°C
1.78
1.76
0
0
Current
Ripple Voltage
Line Regulation
Load Regulation
EFFICIENCY
CAPACITIVE LOAD
Full Load, 20Hz to 10MHz
V
IN
= 15V to 50V
No Load to Full Load
20
5
10
66
75
20
30
1000
DYNAMIC
Load Step Output Transient
Load Step Recovery
Line Step Recovery
Turn On Delay
Turn On Overshoot
3
V
OUT
V
OUT
V
OUT
Half Load to Full Load
V
IN
= 15V to 50V
V
IN
= 0V to 28V
200
500
400
400
15
0
400
750
600
750
20
20
200
200
400
400
15
0
400
400
600
600
20
50
Line Step Output Transient
3
DS90054E
3
DVST2800T Series
SPECIFICATIONS
(T
CASE
= -55°C to +100°C, V
IN
= +28V ± 5%, Full Load, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
Input Voltage (Transient, 1 second)
Output Power
1
Power Dissipation (Full Load, T
CASE
= +100°C)
MAIN OUTPUT
Parameter
STATIC
OUTPUT
Voltage
Power
2
2
50 V
DC
80 Volts
30 Watts
15 Watts
Operating Case Temperature
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight (Maximum)
-55°C to +100°C
-55°C to +125°C
270°C
100 Grams
Conditions
DVST2812xxyyT
Min
Typ
12.00
12.00
Units
Max
12.12
12.24
20
1.67
V
V
W
A
mV
p-p
mV
mV
%
500
μF
mV
PK
μSec
mV
PK
μSec
mSec
mV
PK
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
T
CASE
= 25°C
T
CASE
= -55°C to +100°C
11.88
11.76
Current
Ripple Voltage
Line Regulation
Load Regulation
EFFICIENCY
CAPACITIVE LOAD
Full Load, 20Hz to 10MHz
V
IN
= 15V to 50V
No Load to Full Load
76
50
50
50
DYNAMIC
Load Step Output Transient
Load Step Recovery
Line Step Recovery
Turn On Delay
Turn On Overshoot
3
V
OUT
V
OUT
V
OUT
Half Load to Full Load
V
IN
= 15V to 50V
V
IN
= 0V to 28V
200
200
400
200
15
0
400
400
600
600
20
50
Line Step Output Transient
3
DS90054E
4
DVST2800T Series
SPECIFICATIONS
(T
CASE
= -55°C to +100°C, V
IN
= +28V ± 5%, Full Load, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
Input Voltage (Transient, 1 second)
Output Power
1
Power Dissipation (Full Load, T
CASE
= +100°C)
AUXILIARY OUTPUT
Parameter
STATIC
OUTPUT
Voltage
Power
2
2
50 V
DC
80 Volts
30 Watts
15 Watts
Operating Case Temperature
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight (Maximum)
-55°C to +100°C
-55°C to +125°C
270°C
100 Grams
Conditions
Min
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
Full Load, 20Hz to 10MHz
V
IN
= 15V to 50V
No Load to Full Load
T
CASE
= 25°C
T
CASE
= -55°C to +100°C
DVST28x12yyT
Typ
12.00
12.00
DVST28x15yyT
Min
14.70
14.55
0
0
25
5
10
Units
Max
12.24
12.36
5
0.42
Typ
15.00
15.00
Max
15.30
15.45
5
0.33
50
20
50
500
V
V
W
A
mV
p-p
mV
mV
μF
mV
PK
μSec
mV
PK
μSec
mSec
mV
PK
11.76
11.64
0
0
Current
Ripple Voltage
Line Regulation
Load Regulation
CAPACITIVE LOAD
25
5
10
50
20
50
500
DYNAMIC
Load Step Output Transient
Load Step Recovery
Line Step Recovery
Turn On Delay
Turn On Overshoot
3
V
OUT
V
OUT
V
OUT
Half Load to Full Load
V
IN
= 15V to 50V
V
IN
= 0V to 28V
200
100
100
100
2
100
400
200
400
200
20
250
200
100
100
100
2
100
400
200
400
200
20
250
Line Step Output Transient
3
DS90054E
5
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