DVSA2800D Series
1X002DSG
11314 4
th
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
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
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)
DVSA2800D Series
1X002DSG
2
SPECIFICATIONS
(T
CASE
= -55C to +125C, V
IN
= +28V 5%, Full Load
5
, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
50 V
DC
Junction Temperature Rise to Case
+10C
Input Voltage (Transient, 1 second)
80 Volts
Storage Temperature
-65C to +150C
Output Power
1
6 Watts
Lead Solder Temperature (10 seconds)
270C
Power Dissipation (Full Load, T
CASE
= +125C)
2.5 Watts
Weight (Maximum)
15 Grams
DVSA2805D DVSA2812D
Parameter Conditions
Min Typ Max Min Typ Max
Units
STATIC
Continuous
15 28 50 15 28 50 V
INPUT
Voltage
4
Transient,
1
sec
- - 80 - - 80 V
Inhibited
- - 6 - - 6
mA
Current
No
Load
- 30 60 - 30 60
mA
Ripple Current
Full Load
5
,
20Hz
to
10MHz
- 30 50 - 30 50
mA
p-p
Inhibit Pin Input
4
0 - 1.5 0 - 1.5
V
Inhibit Pin Open Circuit Voltage
4
9.0 11.0 13.0 9.0 11.0 13.0 V
UVLO Turn On
12.0
-
14.8
12.0
-
14.8
V
UVLO Turn Off
4
11.0 - 14.5
11.0 - 14.5 V
+V
OUT
T
CASE
=
25C
4.95 5.0 5.05 11.88 12.0 12.12 V
+V
OUT
T
CASE
= -55C to +125C
4.925
5.0
5.075
11.82
12.0
12.18
V
-V
OUT
T
CASE
=
25C
4.80 5.0 5.20 11.80 12.0 12.20 V
OUTPUT
Voltage
5
-V
OUT
T
CASE
=
-55C
to
+125C 4.75 5.0 5.25 11.52 12.0 12.48 V
Total
0 - 5 0 - 6 W
Power
3,6
V
OUT
Either
Output
0 - 3.5 0 - 4.2
W
Current
3,6
V
OUT
Either Output
0 - 0.7 0 -
0.35
A
Ripple Voltage
V
OUT
Full Load
5
,
20Hz
to
10MHz
- - 50 - - 50
mV
p-p
+V
OUT
V
IN
= 16V to 40V
-
10
20
-
10
20
mV
Line Regulation
-V
OUT
V
IN
= 16V to 40V
-
50
200
-
50
200
mV
+V
OUT
No Load to Full Load
5
- 10 50 - 10 50
mV
Load Regulation
-V
OUT
No Load to Full Load
5,7
- 50
200 - 50
200
mV
Cross Regulation
-V
OUT
+Load 70%, -Load 30%
+Load 30%, -Load 70%
- - 450 - - 450
mV
EFFICIENCY Full
Load
5
66 72 - 72 77 - %
Overload
4
- - 3 - - 3 W
LOAD FAULT POWER DISSIPATION
Short
Circuit
- - 3 - - 3 W
CAPACITIVE LOAD
4
Either
Output
- - 500 - - 500
F
SWITCHING
FREQUENCY
350 450 500 350 450 500 kHz
ISOLATION 500
V
DC
, T
CASE
=
25C 100 - - 100 - - M
MTBF (MIL-HDBK-217F)
AIF @ T
C
=
55C
- 457 - - 457 - kHrs
See notes next page.
DVSA2800D Series
1X002DSG
3
SPECIFICATIONS
(T
CASE
= -55C to +125C, V
IN
= +28V 5%, Full Load
5
, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
50 V
DC
Junction Temperature Rise to Case
+10C
Input Voltage (Transient, 1 second)
80 Volts
Storage Temperature
-65C to +150C
Output Power
1
6 Watts
Lead Solder Temperature (10 seconds)
270C
Power Dissipation (Full Load, T
CASE
= +125C)
2.5 Watts
Weight (Maximum)
15 Grams
DVSA2805D DVSA2812D
Parameter Conditions
Min Typ Max Min Typ Max
Units
DYNAMIC
Load Step Output Transient
V
OUT
- - 300 - - 300
mV
PK
Load Step Recovery
2
Half Load to Full Load
- - 400 - - 450
Sec
Line Step Output Transient
4
V
OUT
- 500
1000 - 600
1200
mV
PK
Line Step Recovery
2, 4
V
IN
= 16V to 40V
- 300
700 - 300
500
Sec
Turn On Delay
V
OUT
- 10 20 - 10 20
mSec
Turn On Overshoot
V
IN
= 0V to 28V
- - 25 - - 50
mV
PK
Notes: 1. Dependant on output voltage.
2. Time for output voltage to settle within 1% of its nominal value.
3. Derate linearly to 0 at 135C.
4. Verified by qualification testing.
5. Half load at +V
OUT
and half load at V
OUT
.
6. Up to 70% of the total power or current can be drawn from any one of the two outputs.
7. 5% Load to Full Load at -55C.
DVSA2800D Series
1X002DSG
4
SPECIFICATIONS
(T
CASE
= -55C to +125C, V
IN
= +28V 5%, Full Load
5
, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
50 V
DC
Junction Temperature Rise to Case
+10C
Input Voltage (Transient, 1 second)
80 Volts
Storage Temperature
-65C to +150C
Output Power
1
6 Watts
Lead Solder Temperature (10 seconds)
270C
Power Dissipation (Full Load, T
CASE
= +125C)
2.5 Watts
Weight (Maximum)
15 Grams
DVSA2815D
Parameter Conditions
Min Typ Max
Units
STATIC
Continuous
15 28 50 V
INPUT
Voltage
4
Transient, 1 sec
-
-
80
V
Inhibited -
-
6
mA
Current
No Load
-
30
60
mA
Ripple Current
Full Load
5
, 20Hz to 10MHz
-
30
50
mA
p-p
Inhibit Pin Input
4
0
-
1.5
V
Inhibit Pin Open Circuit Voltage
4
9.0
11.0
13.0
V
UVLO Turn On
12.0
-
14.8
V
UVLO Turn Off
4
11.0
-
14.5
V
+V
OUT
T
CASE
= 25C
14.85
15.0
15.15
V
+V
OUT
T
CASE
= -55C to +125C
14.775
15.0
15.225
V
-V
OUT
T
CASE
= 25C
14.80
15.0
15.20
V
OUTPUT
Voltage
5
-V
OUT
T
CASE
= -55C to +125C
14.40
15.0
15.60
V
Total
-
-
6
W
Power
3,6
V
OUT
Either Output
-
-
4.2
W
Current
3,6
V
OUT
Either Output
-
-
0.28
A
Ripple Voltage
V
OUT
Full Load
5
, 20Hz to 10MHz
-
-
50
mV
p-p
+V
OUT
V
IN
= 16V to 40V
-
10
20
mV
Line Regulation
-V
OUT
V
IN
= 16V to 40V
-
50
200
mV
+V
OUT
No Load to Full Load
5
- 10 50
mV
Load Regulation
-V
OUT
No Load to Full Load
5,7
- 50
200
mV
Cross Regulation
-V
OUT
+Load 70%, -Load 30%
+Load 30%, -Load 70%
- -
450
mV
EFFICIENCY Full
Load
5
73 79 - %
Overload
4
- - 3 W
LOAD FAULT POWER DISSIPATION
Short Circuit
-
-
3
W
CAPACITIVE LOAD
4
Either Output
-
-
500
F
SWITCHING
FREQUENCY
350 450 500 kHz
ISOLATION 500
V
DC
, T
CASE
= 25C
100
-
-
M
MTBF (MIL-HDBK-217F)
AIF @ T
C
= 55C
-
457
-
kHrs
See notes next page.
DVSA2800D Series
1X002DSG
5
SPECIFICATIONS
(T
CASE
= -55C to +125C, V
IN
= +28V 5%, Full Load
5
, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
50 V
DC
Junction Temperature Rise to Case
+10C
Input Voltage (Transient, 1 second)
80 Volts
Storage Temperature
-65C to +150C
Output Power
1
6 Watts
Lead Solder Temperature (10 seconds)
270C
Power Dissipation (Full Load, T
CASE
= +125C)
2.5 Watts
Weight (Maximum)
15 Grams
DVSA2815D
Parameter Conditions
Min Typ Max
Units
DYNAMIC
Load Step Output Transient
V
OUT
- -
300
mV
PK
Load Step Recovery
2
Half Load to Full Load
- -
500
Sec
Line Step Output Transient
4
V
OUT
- 500
1200
mV
PK
Line Step Recovery
2, 4
V
IN
= 16V to 40V
- 300
500
Sec
Turn On Delay
V
OUT
- 10 20
mSec
Turn On Overshoot
V
IN
= 0V to 28V
- - 50
mV
PK
Notes: 1. Dependant on output voltage.
2. Time for output voltage to settle within 1% of its nominal value.
3. Derate linearly to 0 at 135C.
4. Verified by qualification testing.
5. Half load at +V
OUT
and half load at V
OUT
.
6. Up to 70% of the total power or current can be drawn from any one of the two outputs.
7. 5% Load to Full Load at -55C.
DVSA2800D Series
1X002DSG
6
BLOCK DIAGRAM
UNDER
VOLTAGE
SHUTDOWN
PRIMARY
HOUSEKEEPING
SUPPLY
PWM
CONTROL
VOLTAGE AND
CURRENT
AMPLIFIERS
SECONDARY
HOUSEKEEPING
SUPPLY
PIN 7
IN COM
L1
C1
Q1
Rs1
T1
D1
C2
Rs2
INH
PIN 5
FEEDBACK
MAGNETIC
D2
Rs3
C3
PIN 6
28V IN
PIN 2
OUT COM
PIN 3
-V OUT
PIN 1
+V OUT
Figure 2
CONNECTION DIAGRAM
7
IN COM
5
INH
6
28V IN
1
+V OUT
2
OUT COM
LOAD
+
-
28 Vdc
3
-V OUT
LOAD
Figure 3
DVSA2800D Series
1X002DSG
7
INHIBIT DRIVE CONNECTION DIAGRAMS
7
IN COM
5
INH
6
28V IN
OPTIONAL
CAPACITOR
BIAS
12V
10K
7
IN COM
5
INH
6
28V IN
OPTIONAL
CAPACITOR
BIAS
12V
10K
OPTOISOLATOR
Figure 4
Internal Inhibit Circuit and Recommended Drive
Figure 5
Isolated Inhibit Drive
(Shown with optional capacitor for turn-on delay)
(Shown with optional capacitor for turn-on delay)
EMI FILTER HOOKUP DIAGRAM
7
IN COM
5
INH
6
28V IN
1
+V OUT
2
OUT COM
LOAD
+
-
28 Vdc
2
28V OUT
4
OUT COM
1
28V IN
5
IN COM
3
DVMA28 EMI FILTER
8
DVSA2800D DC-DC CONVERTER
CASE
3
-V OUT
LOAD
Figure 6
Converter with EMI Filter
DVSA2800D Series
1X002DSG
8
EFFICIENCY PERFORMANCE CURVES
(T
CASE
= 25C, Full Load, Unless Otherwise Specified)
V
IN
= 15V
V
IN
= 28V
V
IN
= 50V
0
10
20
30
40
50
60
70
80
0
1
2
3
4
5
Output Power (W)
E
ffi
c
i
en
c
y
(%
)
0
10
20
30
40
50
60
70
80
0
1
2
4
5
6
Output Power (W)
E
ffi
c
i
en
c
y
(%
)
Figure 7
DVSA2805D
Figure 8
DVSA2812D
Efficiency (%) vs. Output Power (W)
Efficiency (%) vs. Output Power (W)
0
10
20
30
40
50
60
70
80
0
1
2
4
5
6
Output Power (W)
E
ffi
c
i
e
n
cy
(%
)
Figure 9
DVSA2815D
Efficiency (%) vs. Output Power (W)
DVSA2800D Series
1X002DSG
9
EMI PERFORMANCE CURVES
(T
CASE
= 25C, V
IN
= +28V 5%, Full Load, Unless Otherwise Specified)
Figure 10
DVSA2800D without EMI Filter
Figure 11
DVSA2800D with EMI Filter
DVSA2800D Series
1X002DSG
10
PACKAGE SPECIFICATIONS
TOP VIEW
SIDE VIEW
PIN
FUNCTION
1 +V
OUT
2 OUT
COM
3 -V
OUT
4 N/C
5 INHIBIT
6 28V
IN
7 IN
COM
8 CASE
BOTTOM VIEW
Figure 12
Package and Pinout
(Dimensional Limits are 0.005" Unless Otherwise Stated)
DVSA2800D Series
1X002DSG
11
PACKAGE PIN DESCRIPTION
Pin
Function
Description
1
+V OUT
Positive Output Voltage Connection
2 OUT
COM
Output Common Connection
3
-V OUT
Negative Output Voltage Connection
4 N/C
No
Connection
5 INHIBIT
Logic Low = Disabled Output. Connecting the inhibit pin to input common causes
converter shutdown.
Logic High = Enabled Output. Unconnected or open collector TTL.
6
28V IN
Positive Input Voltage Connection
7
IN COM
Input Common Connection
8 CASE
Case
Connection
DVSA2800D Series
1X002DSG
12
ENVIRONMENTAL SCREENING
(100% Tested Per MIL-STD-883 as referenced to MIL-PRF-38534)
Notes:
1.
100% R&R testing at 55C, +25C, and +125C with all test data included in product shipment.
2.
PIND test Certificate of Compliance included in product shipment.
3. Radiographic
test
Certificate of Compliance and film(s) included in product shipment.
Screening
MIL-STD-883
Standard
(No Suffix)
Extended
/ES
HB
/HB
Class H
/H
Class K
/K
Non-
Destructive
Bond Pull
Method 2023
Internal
Visual
Method 2017, 2032
Internal Procedure
Temperature
Cycling
Method 1010, Condition C
Method 1010, -55C to 125C
Constant
Acceleration
Method 2001, 3000g, Y1 Direction
Method 2001, 500g, Y1 Direction
PIND
Method 2020, Condition A
2
Pre Burn-In
Electrical
100%
at
25C
Burn-In
Method 1015, 320 hours at +125C
Method 1015, 160 hours at +125C
96 hours at +125C
24 hours at +125C
Final
Electrical
MIL-PRF-38534, Group A
1
100% at 25C
Hermeticity
Method 1014, Fine Leak, Condition A
Method 1014, Gross Leak, Condition C
Dip (1 x 10
-3
)
Radiography Method
2012
3
External
Visual
Method 2009
DVSA2800D Series
1X002DSG
13
ORDERING INFORMATION
DVSA
28
05
D
R
/HB - XXX
1 2 3 4 5 6 7
(1) (2) (3) (4)
Product Series
Nominal Input
Voltage
Output Voltage
Number of Outputs
DVSA
28
28 Volts
05
12
15
5 Volts
12 Volts
15 Volts
D
Dual
(5) (6) (7)
Rad-Hard Option
2
Screening Code
1,3
Additional Screening
Code
None
R
Standard
100 kRad
None
/ES
/HB
/H
/K
Standard
Extended
HB
Class H
Class K
Contact Sales
Notes:
1.
Contact the VPT Inc. Sales Department for
availability of Class H (/H) or Class K (/K) qualified products.
2.
VPT Inc. is not currently qualified to a DSCC certified radiation hardness assurance program.
3.
VPT Inc. reserves the right to ship higher screened or SMD products to meet lower screened orders at our
sole discretion unless specifically forbidden by customer contract.
Please contact your sales representative or the VPT Inc. Sales Department for more information
concerning additional environmental screening and testing, different input voltage, output voltage,
power requirement, source inspection, and/or special element evaluation for space or other higher
quality applications.
DVSA2800D Series
1X002DSG
14
SMD (STANDARD MICROCIRCUIT DRAWING) NUMBERS
Standard Microcircuit
Drawing (SMD)
DVSA2800D Series
Similar Part Number
5962-0324201HXC DVSA2805D/H
5962-0324202HXC DVSA2812D/H
5962-0324203HXC DVSA2815D/H
Do not use the DVSA2800D Series similar part number for SMD product acquisition. It is listed for
reference only. For exact specifications for the SMD product, refer to the SMD drawing. SMD's can be
downloaded from the DSCC website at
http://www.dscc.dla.mil/programs/smcr/
. The SMD number
listed above is for MIL-PRF-38534 Class H screening, standard gold plated lead finish, and no RHA
(Radiation Hardness Assurance) level. Please reference the SMD for other screening levels, lead
finishes, and radiation levels.
CONTACT INFORMATION
To request a quotation or place orders please contact your sales representative or the VPT Inc. Sales
Department at:
Phone
: (425)
353-3010
Fax
:
(425) 353-4030
E-mail
: vptsales@vpt-inc.com
All information contained in this datasheet is believed to be accurate, however, no responsibility is assumed for possible errors
or omissions. The products or specifications contained herein are subject to change without notice.
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