DVHF2800D Series
DVHF2800D-4.0 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 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 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 450 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 20 Watts Output Power
Fault Tolerant 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
Precision Projection Welded Hermetic Package
High Power Density: > 37 W/in3
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 – DVHF2800D / DVHF2800DF DC-DC Converter
(Exact marking may differ from that shown)
DVHF2800D Series
DVHF2800D-4.0 2
SPECIFICATIONS (TCASE = -55°C to +125°C, VIN = +28V ± 5%, Full Load5, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous) 50 VDC Junction Temperature Rise to Case +12°C
Input Voltage (Transient, 1 second) 80 Volts Storage Temperature -65°C to +150°C
Output Power1 20 Watts Lead Solder Temperature (10 seconds) 270°C
Power Dissipation (Full Load, TCASE = +125°C) 6 Watts Weight (Maximum) (Un-Flanged / Flanged) (24 / 28) Grams
ESD Rating per MIL-PRF-38534 2
Parameter Conditions
DVHF2805D DVHF2812D
Units
Min Typ Max Min Typ Max
STATIC
INPUT
Voltage4
Continuous 15 28 50 15 28 50 V
Transient, 1 sec - - 80 - - 80 V
Current Inhibited - 4 6 - 4 6 mA
No Load - 45 65 - 45 65 mA
Ripple Current Full Load5, 20Hz to 10MHz - 35 60 - 45 90 mAp-p
Inhibit Pin Input4 0 - 1.5 0 - 1.5 V
Inhibit Pin Open Circuit Voltage4 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 Off4 11.0 - 14.5 11.0 - 14.5 V
OUTPUT
Voltage5
+VOUT TCASE = 25°C 4.95 5.0 5.05 11.88 12.0 12.12 V
+VOUT TCASE = -55°C to +125°C 4.925 5.0 5.075 11.82 12.0 12.18 V
-VOUT TCASE = 25°C 4.80 5.0 5.20 11.80 12.0 12.20 V
-VOUT TCASE = -55°C to +125°C 4.75 5.0 5.25 11.52 12.0 12.48 V
Power3,6 Total 0 - 15 0 - 20 W
±VOUT
Either Output 0 - 10.5 0 - 14 W
Current3,6 ±VOUT Either Output 0 - 2.1 0 - 1.17 A
Ripple Voltage ±VOUT Full Load5, 20Hz to 10MHz - 35 60 - 30 50 mVp-p
Line Regulation +VOUT VIN = 16V to 40V - 2 20 - 2 20 mV
-VOUT VIN = 16V to 40V - 20 200 - 20 200 mV
Load Regulation +VOUT No Load to Full Load5 - 5 50 - 5 50 mV
-VOUT No Load to Full Load5,7 - 25 200 - 20 200 mV
Cross Regulation -VOUT
+VOUT = 70%, -VOUT = 30%
+VOUT = 30%, -VOUT = 70% - 370 500 - 400 500 mV
EFFICIENCY Full Load5 73 78 - 78 84 - %
LOAD FAULT POWER DISSIPATION Overload4 - - 8 - - 8 W
Short Circuit - - 8 - - 8 W
CAPACITIVE LOAD4 Either Output - - 500 - - 500
F
SWITCHING FREQUENCY 350 450 500 350 450 500 kHz
ISOLATION 500 VDC, TCASE = 25°C 100 - - 100 - - MΩ
MTBF (MIL-HDBK-217F) AIF @ TC = 55°C - 427 - - 427 - kHrs
See notes next page.
DVHF2800D Series
DVHF2800D-4.0 3
SPECIFICATIONS (TCASE = -55°C to +125°C, VIN = +28V ± 5%, Full Load5, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous) 50 VDC Junction Temperature Rise to Case +12°C
Input Voltage (Transient, 1 second) 80 Volts Storage Temperature -65°C to +150°C
Output Power1 20 Watts Lead Solder Temperature (10 seconds) 270°C
Power Dissipation (Full Load, TCASE = +125°C) 6 Watts Weight (Maximum) (Un-Flanged / Flanged) (24 / 28) Grams
ESD Rating Per MIL-PRF-38534 2
Parameter Conditions
DVHF2805D DVHF2812D
Units
Min Typ Max Min Typ Max
DYNAMIC
Load Step Output Transient ±VOUT Half Load to Full Load - 200 400 - 220 400 mVPK
Load Step Recovery2 - 300 500 - 200 500
Sec
Line Step Output Transient4 ±VOUT VIN = 16V to 40V - 400 800 - 500 900 mVPK
Line Step Recovery2, 4 - 300 700 - 300 500
Sec
Turn On Delay ±VOUT VIN = 0V to 28V - 10 20 - 10 20 mSec
Turn On Overshoot - 0 25 - 0 50 mVPK
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 135°C.
4. Verified by qualification testing.
5. Half load at +VOUT and half load at –VOUT.
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 -55°C.
DVHF2800D Series
DVHF2800D-4.0 4
SPECIFICATIONS (TCASE = -55°C to +125°C, VIN = +28V ± 5%, Full Load5, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous) 50 VDC Junction Temperature Rise to Case +12°C
Input Voltage (Transient, 1 second) 80 Volts Storage Temperature -65°C to +150°C
Output Power1 20 Watts Lead Solder Temperature (10 seconds) 270°C
Power Dissipation (Full Load, TCASE = +125°C) 6 Watts Weight (Maximum) (Un-Flanged / Flanged) (24 / 28) Grams
ESD Rating per MIL-PRF-38534 2
Parameter Conditions
DVHF2815D Units
Min Typ Max
STATIC
INPUT
Voltage4
Continuous 15 28 50 V
Transient, 1 sec - - 80 V
Current Inhibited - 4 6 mA
No Load - 50 65 mA
Ripple Current Full Load5, 20Hz to 10MHz - 40 90 mAp-p
Inhibit Pin Input4 0 - 1.5 V
Inhibit Pin Open Circuit Voltage4 9.0 11.0 13.0 V
UVLO Turn On 12.0 - 14.8 V
UVLO Turn Off4 11.0 - 14.5 V
OUTPUT
Voltage5
+VOUT TCASE = 25°C 14.85 15.0 15.15 V
+VOUT TCASE = -55°C to +125°C 14.775 15.0 15.225 V
-VOUT TCASE = 25°C 14.80 15.0 15.20 V
-VOUT TCASE = -55°C to +125°C 14.40 15.0 15.60 V
Power3,6 Total - - 20 W
±VOUT
Either Output - - 14 W
Current3,6 ±VOUT Either Output - - 0.93 A
Ripple Voltage ±VOUT Full Load5, 20Hz to 10MHz - 30 60 mVp-p
Line Regulation +VOUT VIN = 16V to 40V - 2 20 mV
-VOUT VIN = 16V to 40V - 40 200 mV
Load Regulation +VOUT No Load to Full Load5 - 5 50 mV
-VOUT No Load to Full Load5,7 - 25 200 mV
Cross Regulation -VOUT
+VOUT = 70%, -VOUT = 30%
+VOUT = 30%, -VOUT = 70% - 400 500 mV
EFFICIENCY Full Load5 79 85 - %
LOAD FAULT POWER DISSIPATION Overload4 - - 8 W
Short Circuit - - 8 W
CAPACITIVE LOAD4 Either Output - - 500
F
SWITCHING FREQUENCY 350 450 500 kHz
ISOLATION 500 VDC, TCASE = 25°C 100 - - MΩ
MTBF (MIL-HDBK-217F) AIF @ TC = 55°C - 427 - kHrs
See notes next page.
DVHF2800D Series
DVHF2800D-4.0 5
SPECIFICATIONS (TCASE = -55°C to +125°C, VIN = +28V ± 5%, Full Load5, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous) 50 VDC Junction Temperature Rise to Case +12°C
Input Voltage (Transient, 1 second) 80 Volts Storage Temperature -65°C to +150°C
Output Power1 20 Watts Lead Solder Temperature (10 seconds) 270°C
Power Dissipation (Full Load, TCASE = +125°C) 6 Watts Weight (Maximum) (Un-Flanged / Flanged) (24 / 28) Grams
ESD Rating per MIL-PRF-38534 2
Parameter Conditions
DVHF2815D Units
Min Typ Max
DYNAMIC
Load Step Output Transient ±VOUT Half Load to Full Load - 200 400 mVPK
Load Step Recovery2 - 100 500
Sec
Line Step Output Transient4 ±VOUT VIN = 16V to 40V - 500 900 mVPK
Line Step Recovery2, 4 - 300 500
Sec
Turn On Delay ±VOUT VIN = 0V to 28V - 10 20 mSec
Turn On Overshoot - 0 50 mVPK
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 135°C.
4. Verified by qualification testing.
5. Half load at +VOUT and half load at –VOUT.
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 -55°C.
DVHF2800D Series
DVHF2800D-4.0 6
BLOCK DIAGRAM
UNDER
VOLTAGE
SHUTDOWN
PRIMARY
H
OUSEKEEPIN
G
SUPPLY
PWM
CONTROL
VOLTAGE AND
CURRENT
AMPLIFIERS
SECONDARY
H
OUSEKEEPIN
G
SU
PPL
Y
PIN 7
IN COM
L1
C1
Q1
Rs1
T1 D1
C2
Rs2
INH
PIN 1
FEEDBACK
MAGNETIC
D2
Rs3
C3
PIN 8
28V IN
PIN 3
OUT COM
PIN 4
-V OUT
PIN 2
+V OUT
Figure 2
CONNECTION DIAGRAM
7
IN COM
1
INH
8
28V IN
2
+V OUT
3
OUT COM
LOAD
+
-
28 Vdc
4
-V OUT
LOAD
Figure 3
DVHF2800D Series
DVHF2800D-4.0 7
INHIBIT DRIVE CONNECTION DIAGRAMS
7IN COM
1INH
828V IN
OPTIONAL
CAPACITOR
BIAS
12V
10K
7IN COM
1INH
828V 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
1
INH
8
28V IN
2
+V OUT
3
OUT COM
LOAD
+
-
28 Vdc
2
28V OUT
4
OUT COM
1
28V IN
5
IN COM
3
DVMH28 EMI FILTER
6
DVHF2800D DC-DC CONVERTER
CASE
4
-V OUT
LOAD
Figure 6 – Converter with EMI Filter
DVHF2800D Series
DVHF2800D-4.0 8
EFFICIENCY PERFORMANCE CURVES (TCASE = 25°C, Full Load, Unless Otherwise Specified)
V
IN = 16V VIN = 28V VIN = 40V
50
55
60
65
70
75
80
051015
Output Pow er (W)
Efficiency (%)
55
60
65
70
75
80
85
0 5 10 15 20
Output Pow er (W)
Efficiency (%)
Figure 7 – DVHF2805D Figure 8 – DVHF2812D
Efficiency (%) vs. Output Power (W) Efficiency (%) vs. Output Power (W)
60
65
70
75
80
85
90
0 5 10 15 20
Output Pow er (W)
Efficiency (%)
Figure 9 – DVHF2815D
Efficiency (%) vs. Output Power (W)
DVHF2800D Series
DVHF2800D-4.0 9
CROSS REGULATION CURVES (TCASE = 25°C, Full Load, Unless Otherwise Specified)
+Io = 10% +Io = 30% +Io = 50% +Io = 70%
-6.2
-6
-5.8
-5.6
-5.4
-5.2
-5
-4.8
-4.6
-4.4
-4.2
0 0.4 0.8 1.2 1.6 2 2.4
-Io (A)
-Vo (V)
+Io=0.3A +Io=0.9A
+Io=1.5A +Io=2.1A
-13.4
-13.2
-13
-12.8
-12.6
-12.4
-12.2
-12
-11.8
-11.6
-11.4
-11.2
0 0.2 0.4 0.6 0.8 1 1.2
-Io (A)
-Vo (V)
+Io=0.17A +Io=0.5A
+Io=0.83A +Io=1.17A
Figure 10 – DVHF2805D Figure 11 – DVHF2812D
-Vout (V) vs. -Iout (A) -Vout (V) vs. -Iout (A)
-16.4
-16.2
-16
-15.8
-15.6
-15.4
-15.2
-15
-14.8
-14.6
-14.4
-14.2
0 0.2 0.4 0.6 0.8 1
-Io (A)
-Vo (V)
+Io=0.13A +Io=0.4A
+Io=0.67A +Io=0.93A
Figure 12 – DVHF2815D
-Vout (V) vs. -Iout (A)
DVHF2800D Series
DVHF2800D-4.0 10
EMI PERFORMANCE CURVES
(TCASE = 25°C, VIN = +28V ± 5%, Full Load, Unless Otherwise Specified)
Figure 13 – DVHF2800D without EMI Filter
Figure 14 – DVHF2800D with EMI Filter
DVHF2800D Series
DVHF2800D-4.0 11
PACKAGE SPECIFICATIONS (NON-FLANGED)
Pin Function Pin Function
1 INHIBIT 5 N/C
2 +V OUT 6 CASE
3 OUT COM 7 IN COM
4 -V OUT 8 28V IN
Figure 15 – Non-Flanged Package and Pinout
DVHF2800D Series
DVHF2800D-4.0 12
PACKAGE SPECIFICATIONS (FLANGED)
Pin Function Pin Function
1 INHIBIT 5 N/C
2 +V OUT 6 CASE
3 OUT COM 7 IN COM
4 -V OUT 8 28V IN
Figure 16 – Flanged Package and Pinout
DVHF2800D Series
DVHF2800D-4.0 13
PACKAGE PIN DESCRIPTION
Pin Function Description
1 INHIBIT
Logic Low = Disabled Output. Connecting the inhibit pin to input common (PIN 7)
causes converter shutdown.
Logic High = Enabled Output. Unconnected or open collector TTL.
2 +V OUT Positive Output Voltage Connection
3 OUT COM Output Common Connection
4 -V OUT Negative Output Voltage Connection
5 N/C No Connection
6 CASE Case Connection
7 IN COM Input Common Connection
8 28V IN Positive Input Voltage Connection
DVHF2800D Series
DVHF2800D-4.0 14
ENVIRONMENTAL SCREENING (100% Tested Per MIL-STD-883 as referenced to MIL-PRF-38534)
Notes: 1. 100% R&R testing at –55°C, +25°C, and +125°C 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, -55°C to 125°C
Constant
Acceleration
Method 2001, 3000g, Y1 Direction
Method 2001, 500g, Y1 Direction
PIND Method 2020, Condition A2
Pre Burn-In
Electrical 100% at 25°C
Burn-In
Method 1015, 320 hours at +125°C
Method 1015, 160 hours at +125°C
96 hours at +125°C
24 hours at +125°C
Final
Electrical
MIL-PRF-38534, Group A1
100% at 25°C
Hermeticity
Method 1014, Fine Leak, Condition A
Method 1014, Gross Leak, Condition C
Dip (1 x 10-3)
Radiography Method 20123
External
Visual Method 2009
DVHF2800D Series
DVHF2800D-4.0 15
ORDERING INFORMATION
DVHF 28 05 D F /HB - XXX
1 2 3 4 5 6 7
(1) (2) (3) (4)
Product Series Nominal Input
Voltage Output Voltage Number of Outputs
DVHF
28
28 Volts
05
12
15
± 5 Volts
± 12 Volts
± 15 Volts
D
Dual
(5) (6) (7)
Package Option Screening Code1,2 Additional Screening
Code
None
F
Non-
Flanged
Flanged
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. 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.
DVHF2800D Series
DVHF2800D-4.0 16
SMD (STANDARD MICROCIRCUIT DRAWING) NUM BERS
Standard Microcircuit
Drawing (SMD) DVHF2800D Series
Similar Part Number
5962-0324401HXC
5962-0324401HXA
5962-0324401HYC
5962-0324401HYA
5962-0324401KXC
5962-0324401KXA
5962-0324401KYC
5962-0324401KYA
DVHF2805D/H
DVHF2805D/H-E
DVHF2805DF/H
DVHF2805DF/H-E
DVHF2805D/K
DVHF2805D/K-E
DVHF2805DF/K
DVHF2805DF/K-E
5962-0324402HXC
5962-0324402HXA
5962-0324402HYC
5962-0324402HYA
5962-0324402KXC
5962-0324402KXA
5962-0324402KYC
5962-0324402KYA
DVHF2812D/H
DVHF2812D/H-E
DVHF2812DF/H
DVHF2812DF/H-E
DVHF2812D/K
DVHF2812D/K-E
DVHF2812DF/K
DVHF2812DF/K-E
5962-0324403HXC
5962-0324403HXA
5962-0324403HYC
5962-0324403HYA
5962-0324403KXC
5962-0324403KXA
5962-0324403KYC
5962-0324403KYA
DVHF2815D/H
DVHF2815D/H-E
DVHF2815DF/H
DVHF2815DF/H-E
DVHF2815D/K
DVHF2815D/K-E
DVHF2815DF/K
DVHF2815DF/K-E
Do not use the DVHF2800D 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. SMDs can be
downloaded from the DLA Land and Maritime (Previously known as DSCC) website at
http://www.dscc.dla.mil/programs/smcr/. The SMD number listed above is for standard gold-plated lead
finish and “P” RHA (Radiation Hardness Assurance) level. Please reference the SMD for other
screening levels, lead finishes, and radiation levels. All SMD products are marked with a “Q” on the
cover as specified by the QML certification mark requirement of MIL-PRF-38534.
DVHF2800D Series
DVHF2800D-4.0 17
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.
