DVFL2800D Series
1X011DSG
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
HIGH RELIABILITY HYBRID
DC-DC CONVERTERS
DESCRIPTION
The DVFL 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 DVFL series is a magnetic feedback circuit
that is radiation immune. Operating at a nominal
fixed frequency of 500 kHz, these regulated, isolated
units utilize well-controlled undervoltage lockout
circuitry to eliminate slow start-up problems. The
current sharing function allows a maximum of five
units to be connected in parallel to boost the total
output power to 5 times. The output voltage is
trimmable up to +10% or down 20%.
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
Parallel Up to 5 Units With Current Sharing
Output Voltage Trim Up +10% or Down 20%
Wide Input Voltage Range: 16 to 40 Volts per
MIL-STD-704
Up to 120 Watts Output Power
Radiation Immune Magnetic Feedback Circuit
NO Use of Optoisolators
Undervoltage
Lockout
Indefinite Short Circuit Protection
Current Limit Protection
Industry Standard Pinout
Input Transient Voltage: 50 Volts for 1 second
Radiation Hardened Version Available
Precision Seam Welded Hermetic Package
High Power Density: > 80 W/in
3
Custom Versions Available
Additional Environmental Screening Available
Meets MIL-STD-461C and MIL-STD-461D EMC
Requirements When Used With a DVME28 EMI
Filter
MIL-PRF-38534 Element Evaluated
Components
Figure 1 DVFL2800D DC-DC Converter
(Not To Scale)
DVFL2800D Series
1X011DSG
2
SPECIFICATIONS
(T
CASE
= -55C to +125C, V
IN
= +28V 5%, Full Load
5
, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
40 V
DC
Junction Temperature Rise to Case
+15C
Input Voltage (Transient, 1 second)
50 Volts
Storage Temperature
-65C to +150C
Output Power
1
120 Watts
Lead Solder Temperature (10 seconds)
270C
Power Dissipation (Full Load, T
CASE
= +125C)
40 Watts
Weight (Maximum) (No Pin Extensions)
86 Grams
DVFL2805D DVFL2812D
Parameter Conditions
Min Typ Max Min Typ Max
Units
STATIC
Continuous
16 28 40 16 28 40 V
INPUT
Voltage
4
Transient,
1
sec
- - 50 - - 50 V
Inhibited
1
- - 3 - - 3
mA
Inhibited
2
- - 70 - - 70
mA
Current
No
Load
- - 140 - - 140
mA
Ripple Current
Full Load
5
,
20Hz
to
10MHz
- - 80 - - 80
mA
p-p
INH1 Pin Input
4
0 - 1.5 0 - 1.5
V
INH2 Pin Input
4
0 - 1.0 0 - 1.0
V
INH1 Pin Open Circuit Voltage
4
10.5 - 13.5
10.5 - 13.5 V
INH2 Pin Open Circuit Voltage
4
5.0 - 8.0 5.0 - 8.0 V
UVLO Turn On
14.0
-
16.0
14.0
-
16.0
V
UVLO Turn Off
4
11.0 - 14.5
11.0 - 14.5 V
+V
OUT
T
CASE
= 25C
4.95
5.00
5.05
11.88
12.00
12.12
V
+V
OUT
T
CASE
=
-55C
to
+125C 4.925 5.00 5.075 11.82 12.00 12.18 V
-V
OUT
T
CASE
= 25C
4.80
5.00
5.20
11.80
12.00
12.20
V
OUTPUT
Voltage
5
-V
OUT
T
CASE
= -55C to +125C
4.75
5.00
5.25
11.52
12.00
12.48
V
Total
- - 100 - - 110 W
Power
3,6
V
OUT
Either
Output
- - 70 - - 77 W
Current
3,6
V
OUT
Either
Output
- - 14 - - 6.4 A
Ripple Voltage
V
OUT
Full Load
5
,
20Hz
to
10MHz
- - 80 - - 80
mV
p-p
+V
OUT
V
IN
= 16V to 40V
-
-
20
-
-
20
mV
Line Regulation
-V
OUT
V
IN
= 16V to 40V
-
-
200
-
-
200
mV
+V
OUT
No Load to Full Load
5
- - 100 - - 120
mV
Load Regulation
-V
OUT
No Load to Full Load
5
- - 200 - - 200
mV
Cross Regulation
-V
OUT
V1+ Load 30% - Load 70%
V2+ Load 70% - Load 30%
- - 450 - - 450
mV
Voltage Trim
Full Load
-20 - 10 -20 - 10 %
Share Pin Voltage
4
2.0 - 3.0 2.0 - 3.0 V
EFFICIENCY Full
Load
5
73 - - 80 - - %
Overload
4
- - 80 - - 80 W
LOAD FAULT POWER DISSIPATION
Short
Circuit
- - 80 - - 80 W
CAPACITIVE LOAD
4
- - 500 - - 500
F
SWITCHING
FREQUENCY
425 500 600 425 500 600 kHz
SYNC FREQUENCY RANGE
V
H
V
L
= 5V
Duty Cycle = 20% - 80%
500 - 600
500 - 600
kHz
ISOLATION 500
V
DC
, T
CASE
=
25C 100 - - 100 - - M
MTBF (MIL-HDBK-217F)
AIF @ T
C
=
55C
- 400 - - 400 - kHrs
DVFL2800D Series
1X011DSG
3
SPECIFICATIONS
(T
CASE
= -55C to +125C, V
IN
= +28V 5%, Full Load
5
, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
40 V
DC
Junction Temperature Rise to Case
+15C
Input Voltage (Transient, 1 second)
50 Volts
Storage Temperature
-65C to +150C
Output Power
1
120 Watts
Lead Solder Temperature (10 seconds)
270C
Power Dissipation (Full Load, T
CASE
= +125C)
40 Watts
Weight (Maximum) (No Pin Extensions)
86 Grams
DVFL2805D DVFL2812D
Parameter Conditions
Min Typ Max Min Typ Max
Units
DYNAMIC
Load Step Output Transient
V
OUT
- - 400 - - 500
mV
PK
Load Step Recovery
2
Half Load to Full Load
- - 500 - - 500
Sec
Line Step Output Transient
4
V
OUT
- 300
600 - 600
1200
mV
PK
Line Step Recovery
2, 4
V
IN
= 16V to 40V
- 300
500 - 300
500
Sec
Turn On Delay
V
OUT
- - 20 - - 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.
DVFL2800D Series
1X011DSG
4
SPECIFICATIONS
(T
CASE
= -55C to +125C, V
IN
= +28V 5%, Full Load
5
, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
40 V
DC
Junction Temperature Rise to Case
+15C
Input Voltage (Transient, 1 second)
50 Volts
Storage Temperature
-65C to +150C
Output Power
1
120 Watts
Lead Solder Temperature (10 seconds)
270C
Power Dissipation (Full Load, T
CASE
= +125C)
40 Watts
Weight (Maximum) (No Pin Extensions)
86 Grams
DVFL2815D
Parameter Conditions
Min Typ Max
Units
STATIC
Continuous
16 28 40 V
INPUT
Voltage
4
Transient, 1 sec
-
-
50
V
Inhibited 1
-
-
3
mA
Inhibited 2
-
-
70
mA
Current
No Load
-
-
140
mA
Ripple Current
Full Load
5
, 20Hz to 10MHz
-
-
80
mA
p-p
INH1 Pin Input
4
0
-
1.5
V
INH2 Pin Input
4
0
-
1.0
V
INH1 Pin Open Circuit Voltage
4
10.5
-
13.5
V
INH2 Pin Open Circuit Voltage
4
5.0
-
8.0
V
UVLO Turn On
14.5
-
16.0
V
UVLO Turn Off
4
11.0
-
14.5
V
+V
OUT
T
CASE
= 25C
14.85
15.00
15.15
V
+V
OUT
T
CASE
= -55C to +125C
14.775
15.00
15.225
V
-V
OUT
T
CASE
= 25C
14.80
15.00
15.20
V
OUTPUT
Voltage
5
-V
OUT
T
CASE
= -55C to +125C
14.40
15.00
15.60
V
Total
-
-
120
W
Power
3,6
V
OUT
Either Output
-
-
84
W
Current
3,6
V
OUT
Either Output
-
-
5.6
A
Ripple Voltage
V
OUT
Full Load
5
, 20Hz to 10MHz
-
-
80
mV
p-p
+V
OUT
V
IN
= 16V to 40V
-
-
20
mV
Line Regulation
-V
OUT
V
IN
= 16V to 40V
-
-
200
mV
+V
OUT
No Load to Full Load
5
- -
120
mV
Load Regulation
-V
OUT
No Load to Full Load
5
- -
200
mV
Cross Regulation
-V
OUT
V1+ Load 30% - Load 70%
V2+ Load 70% - Load 30%
- -
450
mV
Voltage Trim
Full Load
-20 - 10 %
Share Pin Voltage
4
2.0
-
3.0
V
EFFICIENCY Full
Load
5
81 - - %
Overload
4
- - 80
W
LOAD FAULT POWER DISSIPATION
Short Circuit
-
-
80
W
CAPACITIVE LOAD
4
-
-
500
F
SWITCHING
FREQUENCY
425 500 600 kHz
SYNC FREQUENCY RANGE
V
H
V
L
= 5V
Duty Cycle = 20% - 80%
500 - 600
kHz
ISOLATION 500
V
DC
, T
CASE
= 25C
100
-
-
M
MTBF (MIL-HDBK-217F)
AIF @ T
C
= 55C
-
400
-
kHrs
DVFL2800D Series
1X011DSG
5
SPECIFICATIONS
(T
CASE
= -55C to +125C, V
IN
= +28V 5%, Full Load
5
, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous)
40 V
DC
Junction Temperature Rise to Case
+15C
Input Voltage (Transient, 1 second)
50 Volts
Storage Temperature
-65C to +150C
Output Power
1
120 Watts
Lead Solder Temperature (10 seconds)
270C
Power Dissipation (Full Load, T
CASE
= +125C)
40 Watts
Weight (Maximum) (No Pin Extensions)
86 Grams
DVFL2815D
Parameter Conditions
Min Typ Max
Units
DYNAMIC
Load Step Output Transient
V
OUT
- -
500
mV
PK
Load Step Recovery
2
Half Load to Full Load
- -
500
Sec
Line Step Output Transient
4
V
OUT
- 600
1200
mV
PK
Line Step Recovery
2, 4
V
IN
= 16V to 40V
- 300
500
Sec
Turn On Delay
V
OUT
- - 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.
PDF 
ZIP