DVTR2800S Series
HIGH RELIABILITY HYBRID
DC-DC CONVERTERS
DESCRIPTION
The DVTR 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 DVTR series are robust and effective input and
output filters which provide dramatically reduced
input and output noise performance when compared
to other manufacturers competing
devices. Operating at a nominal fixed frequency of
475 kHz, these regulated, isolated units utilize a high
speed magnetic feedback design and 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
High Reliability
Very Low Output Noise
Wide Input Voltage Range: 15 to 50 Volts per
MIL-STD-704
Up to 40 Watts Output Power
Fault Tolerant Magnetic Feedback Circuit
Output Voltage Trim Up +10%
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
Precision Seam Seal Hermetic Package
High Power Density: > 40 W/in
3
Custom Versions Available
Additional Environmental Screening Available
Meets MIL-STD-461 Revisions C, D, E and F
EMC Requirements When Used With VPT’s
EMI Filters
Flanged and Non-flanged Versions Available
MIL-PRF-38534 Element Evaluated
Components
Space Applications should consider VPT’s “S”
Series of Radiation Tolerant Power Conversion
Devices. Contact VPT for details.
Figure 1
– DVTR2800S / DVTR2800SF DC-DC Converter
(Exact
marking may differ from that shown)
DVTR2800S-7.0
http://www.vpt-inc.com
Sales Information:
Phone: (425) 353-3010
Fax: (425) 353-4030
E-mail: vptsales@vpt-inc.com
1
DVTR2800S Series
SPECIFICATIONS
(T
CASE
= -55°C to +125°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
= +125°C)
ESD Rating per MIL-PRF-38534
50 V
DC
80 Volts
40 Watts
13 Watts
3A
Junction Temperature Rise to Case
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight (Maximum) (Un-Flanged / Flanged)
+15°C
-65°C to +150°C
270°C
(52 / 55) Grams
Parameter
STATIC
INPUT
4
Voltage
Current
Ripple Current
Inhibit Pin Input
UVLO Turn On
UVLO Turn Off
OUTPUT
Voltage
Power
3
3
4
4
4
Conditions
DVTR282R5S
Min
15
-
-
-
-
0
9.0
12.0
11.0
DVTR283R3S
Max
50
80
6
90
50
1.5
13.0
14.8
14.5
2.53
2.54
15
6.0
50
20
50
-
18
18
1000
550
600
-
-
Typ
28
-
4
50
15
-
11.0
-
-
2.5
2.5
-
-
20
2
2
66
-
-
-
475
-
-
413
Min
15
-
-
-
-
0
9.0
12.0
11.0
3.25
3.2
0
0
-
-
-
65
-
-
-
400
500
100
-
Typ
28
-
4
50
20
-
11.0
-
-
3.3
3.3
-
-
25
2
2
70
-
-
-
475
-
-
413
Max
50
80
6
90
50
1.5
13.0
14.8
14.5
3.35
3.4
20
6.06
50
20
50
-
16
16
1000
550
600
-
-
Units
Continuous
Transient, 1 sec
Inhibited
No Load
Full Load, 20Hz to 10MHz
V
V
mA
mA
mA
p-p
V
V
V
V
V
V
W
A
mV
p-p
mV
mV
%
W
W
F
kHz
kHz
MΩ
kHrs
Inhibit Pin Open Circuit Voltage
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
T
CASE
= 25°C
T
CASE
= -55°C to +125°C
2.47
2.46
0
0
Current
Ripple Voltage
Line Regulation
Load Regulation
EFFICIENCY
Full Load, 20Hz to 10MHz
V
IN
= 15V to 50V
No Load to Full Load
Overload
Short Circuit
-
-
-
63
-
-
-
400
LOAD FAULT POWER DISSIPATION
CAPACITIVE LOAD
4
4
SWITCHING FREQUENCY
SYNC FREQUENCY RANGE
ISOLATION
MTBF (MIL-HDBK-217F)
V
H
- V
L
= 5V, DC = 20-80%
500 V
DC
AIF @ T
C
= 55°C
V
OUT
V
OUT
V
OUT
500
100
-
DYNAMIC
Load Step Output Transient
Load Step Recovery
Line Step Recovery
Turn On Delay
Turn On Overshoot
2
4
Half Load to Full Load
V
IN
= 16V to 40V
V
IN
= 0V to 28V
-
-
-
-
-
-
90
280
300
300
10
0
400
500
450
450
20
15
-
-
-
-
-
-
180
260
300
300
10
0
500
500
600
500
20
15
mV
PK
Sec
mV
PK
Sec
mSec
mV
PK
Line Step Output Transient
2, 4
Notes:
1. Dependant on output voltage.
3. Derate linearly to 0 at 135°C.
2. Time for output voltage to settle within 1% of its nominal value.
4. Verified by qualification testing.
DVTR2800S-7.0
2
DVTR2800S Series
SPECIFICATIONS
(T
CASE
= -55°C to +125°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
= +125°C)
ESD Rating per MIL-PRF-38534
50 V
DC
80 Volts
40 Watts
13 Watts
3A
Junction Temperature Rise to Case
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight (Maximum) (Un-Flanged / Flanged)
+15°C
-65°C to +150°C
270°C
(52 / 55) Grams
Parameter
STATIC
INPUT
4
Voltage
Current
Ripple Current
Inhibit Pin Input
UVLO Turn On
UVLO Turn Off
OUTPUT
Voltage
Power
3
3
4
4
4
Conditions
DVTR2805S
Min
15
-
-
-
-
0
9.0
12.0
11.0
DVTR285R2S
Max
50
80
6
90
50
1.5
13.0
14.8
14.5
5.05
5.125
30
6
50
20
50
-
16
16
1000
550
600
-
-
Typ
28
-
4
55
30
-
11.0
-
-
5
5
-
-
20
2
2
78
-
-
-
475
-
-
413
Min
15
-
-
-
-
0
9.0
12.0
11.0
5.14
5.07
0
0
-
-
-
72
-
-
-
400
500
100
-
Typ
28
-
4
55
30
-
11.0
-
-
5.2
5.2
-
-
20
2
2
78
-
-
-
475
-
-
413
Max
50
80
6
90
50
1.5
13.0
14.8
14.5
5.26
5.33
30
6
50
20
50
-
16
16
1000
550
600
-
-
Units
Continuous
Transient, 1 sec
Inhibited
No Load
Full Load, 20Hz to 10MHz
V
V
mA
mA
mA
p-p
V
V
V
V
V
V
W
A
mV
p-p
mV
mV
%
W
W
F
kHz
kHz
MΩ
kHrs
Inhibit Pin Open Circuit Voltage
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
T
CASE
= 25°C
T
CASE
= -55°C to +125°C
4.95
4.875
0
0
Current
Ripple Voltage
Line Regulation
Load Regulation
EFFICIENCY
Full Load, 20Hz to 10MHz
V
IN
= 15V to 50V
No Load to Full Load
Overload
Short Circuit
-
-
-
72
-
-
-
400
LOAD FAULT POWER DISSIPATION
CAPACITIVE LOAD
4
4
SWITCHING FREQUENCY
SYNC FREQUENCY RANGE
ISOLATION
MTBF (MIL-HDBK-217F)
V
H
- V
L
= 5V, DC = 20-80%
500 V
DC
AIF @ T
C
= 55°C
V
OUT
V
OUT
V
OUT
500
100
-
DYNAMIC
Load Step Output Transient
Load Step Recovery
Line Step Recovery
Turn On Delay
Turn On Overshoot
2
4
Half Load to Full Load
V
IN
= 16V to 40V
V
IN
= 0V to 28V
-
-
-
-
-
-
170
60
300
300
10
0
500
500
600
500
20
25
-
-
-
-
-
-
170
60
300
300
10
0
500
500
600
500
20
25
mV
PK
Sec
mV
PK
Sec
mSec
mV
PK
Line Step Output Transient
2, 4
Notes:
1. Dependant on output voltage.
3. Derate linearly to 0 at 135°C.
2. Time for output voltage to settle within 1% of its nominal value.
4. Verified by qualification testing.
DVTR2800S-7.0
3
DVTR2800S Series
SPECIFICATIONS
(T
CASE
= -55°C to +125°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
= +125°C)
ESD Rating per MIL-PRF-38534
50 V
DC
80 Volts
40 Watts
13 Watts
3A
Junction Temperature Rise to Case
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight (Maximum) (Un-Flanged / Flanged)
+15°C
-65°C to +150°C
270°C
(52 / 55) Grams
Parameter
STATIC
INPUT
4
Voltage
Current
Ripple Current
Inhibit Pin Input
UVLO Turn On
UVLO Turn Off
OUTPUT
Voltage
Power
3
3
4
4
4
Conditions
DVTR2807S
Min
15
-
-
-
-
0
9.0
12.0
11.0
DVTR2808S
Max
50
80
6
90
50
1.5
13.0
14.8
14.5
7.07
7.105
35
5
50
20
50
-
16
16
1000
550
600
-
-
Typ
28
-
4
65
30
-
11.0
-
-
7
7
-
-
30
2
2
76
-
-
-
475
-
-
413
Min
15
-
-
-
-
0
9.0
12.0
11.0
7.92
7.88
0
0
-
-
-
75
-
-
-
400
500
100
-
Typ
28
-
4
65
30
-
11.0
-
-
8
8
-
-
30
2
2
79
-
-
-
475
-
-
413
Max
50
80
6
90
50
1.5
13.0
14.8
14.5
8.08
8.12
35
4.4
50
20
50
-
16
16
1000
550
600
-
-
Units
Continuous
Transient, 1 sec
Inhibited
No Load
Full Load, 20Hz to 10MHz
V
V
mA
mA
mA
p-p
V
V
V
V
V
V
W
A
mV
p-p
mV
mV
%
W
W
F
kHz
kHz
MΩ
kHrs
Inhibit Pin Open Circuit Voltage
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
T
CASE
= 25°C
T
CASE
= -55°C to +125°C
6.93
6.895
0
0
Current
Ripple Voltage
Line Regulation
Load Regulation
EFFICIENCY
Full Load, 20Hz to 10MHz
V
IN
= 15V to 50V
No Load to Full Load
Overload
Short Circuit
-
-
-
72
-
-
-
400
LOAD FAULT POWER DISSIPATION
CAPACITIVE LOAD
4
4
SWITCHING FREQUENCY
SYNC FREQUENCY RANGE
ISOLATION
MTBF (MIL-HDBK-217F)
V
H
- V
L
= 5V, DC = 20-80%
500 V
DC
AIF @ T
C
= 55°C
V
OUT
V
OUT
V
OUT
500
100
-
DYNAMIC
Load Step Output Transient
Load Step Recovery
Line Step Recovery
Turn On Delay
Turn On Overshoot
2
4
Half Load to Full Load
V
IN
= 16V to 40V
V
IN
= 0V to 28V
-
-
-
-
-
-
150
100
250
250
10
0
300
250
500
400
20
25
-
-
-
-
110
60
250
250
10
0
250
250
500
500
20
25
mV
PK
Sec
mV
PK
Sec
mSec
mV
PK
Line Step Output Transient
2, 4
Notes:
1. Dependant on output voltage.
3. Derate linearly to 0 at 135°C.
2. Time for output voltage to settle within 1% of its nominal value.
4. Verified by qualification testing.
DVTR2800S-7.0
4
DVTR2800S Series
SPECIFICATIONS
(T
CASE
= -55°C to +125°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
= +125°C)
ESD Rating per MIL-PRF-38534
50 V
DC
80 Volts
40 Watts
13 Watts
3A
Junction Temperature Rise to Case
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight (Maximum) (Un-Flanged / Flanged)
+15°C
-65°C to +150°C
270°C
(52 / 55) Grams
Parameter
STATIC
INPUT
4
Voltage
Current
Ripple Current
Inhibit Pin Input
UVLO Turn On
UVLO Turn Off
OUTPUT
Voltage
Power
3
3
4
4
4
Conditions
DVTR2812S
Min
15
-
-
-
-
0
9.0
12.0
11.0
DVTR2815S
Max
50
80
6
90
50
1.5
13.0
14.8
14.5
12.12
12.3
40
3.33
50
20
50
-
14
14
500
550
600
-
-
Typ
28
-
4
60
30
-
11.0
-
-
12
12
-
-
20
2
10
84
-
-
-
475
-
-
413
Min
15
-
-
-
-
0
9.0
12.0
11.0
14.85
14.625
0
0
-
-
-
77
-
-
-
400
500
100
-
Typ
28
-
4
60
30
-
11.0
-
-
15
15
-
-
20
2
10
84
-
-
-
475
-
-
413
Max
50
80
6
90
50
1.5
13.0
14.8
14.5
15.15
15.375
40
2.67
50
20
50
-
14
14
500
550
600
-
-
Units
Continuous
Transient, 1 sec
Inhibited
No Load
Full Load, 20Hz to 10MHz
V
V
mA
mA
mA
p-p
V
V
V
V
V
V
W
A
mV
p-p
mV
mV
%
W
W
F
kHz
kHz
MΩ
kHrs
Inhibit Pin Open Circuit Voltage
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
T
CASE
= 25°C
T
CASE
= -55°C to +125°C
11.88
11.7
0
0
Current
Ripple Voltage
Line Regulation
Load Regulation
EFFICIENCY
Full Load, 20Hz to 10MHz
V
IN
= 15V to 50V
No Load to Full Load
Overload
Short Circuit
-
-
-
76
-
-
-
400
LOAD FAULT POWER DISSIPATION
CAPACITIVE LOAD
4
4
SWITCHING FREQUENCY
SYNC FREQUENCY RANGE
ISOLATION
MTBF (MIL-HDBK-217F)
V
H
- V
L
= 5V, DC = 20-80%
500 V
DC
AIF @ T
C
= 55°C
V
OUT
V
OUT
V
OUT
500
100
-
DYNAMIC
Load Step Output Transient
Load Step Recovery
Line Step Recovery
Turn On Delay
Turn On Overshoot
2
4
Half Load to Full Load
V
IN
= 16V to 40V
P
OUT
= 30W
V
IN
= 0V to 28V
-
-
-
-
-
-
450
200
500
300
10
0
700
500
900
500
20
50
-
-
-
-
-
-
500
150
500
300
10
0
700
500
900
500
20
50
mV
PK
Sec
mV
PK
Sec
mSec
mV
PK
Line Step Output Transient
2, 4
Notes:
1. Dependant on output voltage.
3. Derate linearly to 0 at 135°C.
2. Time for output voltage to settle within 1% of its nominal value.
4. Verified by qualification testing.
DVTR2800S-7.0
5
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