DVHF2800D Series
HIGH RELIABILITY HYBRID
DC-DC CONVERTERS
DESCRIPTION
The DVHF 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 DVHF 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 20 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: > 37 W/in
3
Custom Versions Available
Additional Environmental Screening Available
Meets MIL-STD-461C and MIL-STD-461D EMC
Requirements When Used With a DVMH28 EMI
Filter
Flanged and Non-flanged Versions Available.
MIL-PRF-38534 Element Evaluated
Components
Figure 1
– DVHF2800D / DVHF2800DF DC-DC Converter
(Not
To Scale)
1X005DSG
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
1
DVHF2800D 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
20 Watts
6 Watts
Junction Temperature Rise to Case
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight
(Maximum)
(Un-Flanged / Flanged)
DVHF2805D
Min
Typ
Max
Min
DVHF2812D
Typ
Max
+12°C
-65°C to +150°C
270°C
(24 / 28)
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
-
-
40
-
-
11.0
-
-
5.0
5.0
5.0
5.0
-
-
-
-
-
-
-
-
-
-
-
-
-
450
-
427
50
80
6
65
60
1.5
13.0
14.8
14.5
5.05
5.075
5.20
5.25
15
10.5
2.1
60
20
200
50
200
500
-
8
8
500
500
-
-
15
-
-
-
-
0
9.0
12.0
11.0
11.88
11.82
11.80
11.52
0
0
0
-
-
-
-
-
-
78
-
-
-
350
100
-
28
-
-
40
-
-
11.0
-
-
12.0
12.0
12.0
12.0
-
-
-
-
-
-
-
-
-
-
-
-
-
450
-
427
50
80
6
65
90
1.5
13.0
14.8
14.5
12.12
12.18
12.20
12.48
20
14
1.17
50
20
200
50
200
500
-
8
8
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
-
-
-
-
-
-
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
+V
OUT
= 70%, -V
OUT
= 30%
+V
OUT
= 30%, -V
OUT
= 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
1X005DSG
2
DVHF2800D 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
20 Watts
6 Watts
Junction Temperature Rise to Case
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight
(Maximum)
(Un-Flanged / Flanged)
DVHF2805D
Min
Typ
Max
Min
DVHF2812D
Typ
Max
+12°C
-65°C to +150°C
270°C
(24 / 28)
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
-
-
-
-
-
-
-
-
400
300
-
-
400
500
800
700
20
25
-
-
-
-
-
-
-
-
500
300
-
-
400
500
900
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.
1X005DSG
3
DVHF2800D 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
20 Watts
6 Watts
Junction Temperature Rise to Case
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight
(Maximum)
(Un-Flanged / Flanged)
DVHF2815D
Min
Typ
Max
+12°C
-65°C to +150°C
270°C
(24 / 28)
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
-
-
40
-
-
11.0
-
-
15.0
15.0
15.0
15.0
-
-
-
-
-
-
-
-
-
-
-
-
-
450
-
427
50
80
6
65
90
1.5
13.0
14.8
14.5
15.15
15.225
15.20
15.60
20
14
0.93
60
20
200
50
200
500
-
8
8
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
-
-
-
-
-
-
-
-
-
79
-
-
-
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
+V
OUT
= 70%, -V
OUT
= 30%
+V
OUT
= 30%, -V
OUT
= 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
1X005DSG
4
DVHF2800D 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
20 Watts
6 Watts
Junction Temperature Rise to Case
Storage Temperature
Lead Solder Temperature (10 seconds)
Weight
(Maximum)
(Un-Flanged / Flanged)
DVHF2815D
Min
Typ
Max
+12°C
-65°C to +150°C
270°C
(24 / 28)
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
-
-
400
500
900
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.
1X005DSG
5
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