DVHV2800S Series
DVHV2800S-5.0
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 DVHV 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 DVHV 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. 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
Very Low Output Noise
Output Voltage Trim Up +10% or Down –20%
Wide Input Voltage Range: 15 to 50 Volts per
MIL-STD-704
Up to 15 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 Seam Seal Hermetic Package
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 – DVHV2800S / DVHV2800SF DC-DC Converter
(Exact marking may differ from that shown)
DVHV2800S Series
DVHV2800S-5.0 2
SPECIFICATIONS (TCASE = -55°C to +125°C, VIN = +28V ± 5%, Full Load, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous) 50 VDC Junction Temperature Rise to Case +15°C
Input Voltage (Transient, 1 second) 80 Volts Storage Temperature -65°C to +150°C
Output Power1 15 Watts Lead Solder Temperature (10 seconds) 270°C
Power Dissipation (Full Load, TCASE = +125°C) 6 Watts Weight (Maximum) (Un-Flanged / Flanged) (52 / 55) Grams
ESD Rating per MIL-PRF-38534 3A
Parameter Conditions
DVHV283R3S DVHV2805S
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 - - 6 - - 6 mA
No Load - - 90 - - 90 mA
Ripple Current Full Load, 20Hz to 10MHz - - 50 - - 50 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
Voltage
VOUT TCASE = 25°C 3.26 3.30 3.34 4.95 5.00 5.05 V
VOUT TCASE = -55°C to +125°C 3.25 3.30 3.35 4.925 5.00 5.075 V
Power3 0 - 10 0 - 15 W
Current3 VOUT 0 - 3.03 0 - 3.0 A
Ripple Voltage VOUT Full Load, 20Hz to 10MHz - - 30 - - 30 mVp-p
Line Regulation VOUT VIN = 15V to 50V - - 20 - - 20 mV
Load Regulation VOUT No Load to Full Load - - 50 - - 50 mV
EFFICIENCY 68 - - 73 - - %
LOAD FAULT POWER DISSIPATION4 Overload - - 11 - - 11 W
Short Circuit - - 11 - - 11 W
CAPACITIVE LOAD4 - - 1000 - - 1000
F
SWITCHING FREQUENCY 400 475 550 400 475 550 kHz
SYNC FREQUENCY RANGE VH – VL = 5V
Duty Cycle = 20% - 80% 500 - 600 500 - 600 kHz
ISOLATION 500 VDC 100 - - 100 - - MΩ
MTBF (MIL-HDBK-217F) AIF @ TC = 55°C - 413 - - 413 - kHrs
DYNAMIC
Load Step Output Transient VOUT Half Load to Full Load - - 200 - - 300 mVPK
Load Step Recovery2 - - 550 - - 500
Sec
Line Step Output Transient4 VOUT VIN = 16V to 40V - 300 600 - 300 600 mVPK
Line Step Recovery2, 4 - 300 500 - 300 500
Sec
Turn On Delay VOUT VIN = 0V to 28V - - 20 - - 20 mSec
Turn On Overshoot - - 15 - - 25 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.
DVHV2800S Series
DVHV2800S-5.0 3
SPECIFICATIONS (TCASE = -55°C to +125°C, VIN = +28V ± 5%, Full Load, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous) 50 VDC Junction Temperature Rise to Case +15°C
Input Voltage (Transient, 1 second) 80 Volts Storage Temperature -65°C to +150°C
Output Power1 15 Watts Lead Solder Temperature (10 seconds) 270°C
Power Dissipation (Full Load, TCASE = +125°C) 6 Watts Weight (Maximum) (Un-Flanged / Flanged) (52 / 55) Grams
ESD Rating per MIL-PRF-38534 3A
Parameter Conditions
DVHV2812S DVHV2815S
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 - - 6 - - 6 mA
No Load - - 90 - - 90 mA
Ripple Current Full Load, 20Hz to 10MHz - - 50 - - 50 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
Voltage
VOUT TCASE = 25°C 11.88 12.0 12.12 14.85 15.0 15.15 V
VOUT TCASE = -55°C to +125°C 11.82 12.0 12.18 14.775 15.0 15.225 V
Power3 0 - 15 0 - 15 W
Current3 VOUT 0 - 1.25 0 - 1.0 A
Ripple Voltage VOUT Full Load, 20Hz to 10MHz - - 40 - - 40 mVp-p
Line Regulation VOUT VIN = 15V to 50V - - 20 - - 20 mV
Load Regulation VOUT No Load to Full Load - - 50 - - 50 mV
EFFICIENCY 77 - - 77 - - %
LOAD FAULT POWER DISSIPATION4 Overload - - 11 - - 11 W
Short Circuit - - 11 - - 11 W
CAPACITIVE LOAD4 - - 500 - - 500
F
SWITCHING FREQUENCY 400 475 550 400 475 550 kHz
SYNC FREQUENCY RANGE VH – VL = 5V
Duty Cycle = 20% - 80% 500 - 600 500 - 600 KHz
ISOLATION 500 VDC 100 - - 100 - - MΩ
MTBF (MIL-HDBK-217F) AIF @ TC = 55°C - 413 - - 413 - kHrs
DYNAMIC
Load Step Output Transient VOUT Half Load to Full Load - - 300 - - 350 mVPK
Load Step Recovery2 - - 550 - - 450
Sec
Line Step Output Transient4 VOUT VIN = 16V to 40V - 500 900 - 500 900 mVPK
Line Step Recovery2, 4 - 300 500 - 300 500
Sec
Turn On Delay VOUT VIN = 0V to 28V - - 20 - - 20 mSec
Turn On Overshoot - - 50 - - 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.
DVHV2800S Series
DVHV2800S-5.0 4
SPECIFICATIONS (TCASE = -55°C to +125°C, VIN = +28V ± 5%, Full Load, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous) 50 VDC Junction Temperature Rise to Case +15°C
Input Voltage (Transient, 1 second) 80 Volts Storage Temperature -65°C to +150°C
Output Power1 15 Watts Lead Solder Temperature (10 seconds) 270°C
Power Dissipation (Full Load, TCASE = +125°C) 6 Watts Weight (Maximum) (Un-Flanged / Flanged) (52 / 55) Grams
ESD Rating per MIL-PRF-38534 3A
Parameter Conditions
DVHV285R2S Units
Min Typ Max
STATIC
INPUT
Voltage4
Continuous 15 28 50 V
Transient, 1 sec - - 80 V
Current Inhibited - - 6 mA
No Load - - 90 mA
Ripple Current Full Load, 20Hz to 10MHz - - 50 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
Voltage
VOUT TCASE = 25°C 5.148 5.20 5.252 V
VOUT TCASE = -55°C to +125°C 5.122 5.20 5.278 V
Power3 0 - 15 W
Current3 VOUT 0 - 3.0 A
Ripple Voltage VOUT Full Load, 20Hz to 10MHz - - 30 mVp-p
Line Regulation VOUT VIN = 15V to 50V - - 20 mV
Load Regulation VOUT No Load to Full Load - - 50 mV
EFFICIENCY 73 - - %
LOAD FAULT POWER DISSIPATION4 Overload - - 11 W
Short Circuit - - 11 W
CAPACITIVE LOAD4 - - 1000
F
SWITCHING FREQUENCY 400 475 550 kHz
SYNC FREQUENCY RANGE VH – VL = 5V
Duty Cycle = 20% - 80% 500 - 600 kHz
ISOLATION 500 VDC 100 - - MΩ
MTBF (MIL-HDBK-217F) AIF @ TC = 55°C - 413 - kHrs
DYNAMIC
Load Step Output Transient VOUT Half Load to Full Load - - 300 mVPK
Load Step Recovery2 - - 500
Sec
Line Step Output Transient4 VOUT VIN = 16V to 40V - 300 600 mVPK
Line Step Recovery2, 4 - 300 500
Sec
Turn On Delay VOUT VIN = 0V to 28V - - 20 mSec
Turn On Overshoot - - 25 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.
DVHV2800S Series
DVHV2800S-5.0 5
BLOCK DIAGRAM
UNDER
VOLTAGE
S
H
U
TD
O
WN
PRIMARY
H
OUSEKEEPIN
G
SU
PPL
Y
PWM
CONTROL
VOLTAGE AND
CURRENT
AMPLIFIER
S
SECONDARY
H
OUSEKEEPIN
G
SU
PPL
Y
PIN 1
28V IN
PIN 10
IN COM
L1
C1
Q1
Rs1
T1 D1
C2 Rs2
+V OUT
PIN 5
PIN 4
OUT COM
INH
PIN 2
FEEDBACK
MAGNETIC
SYNC
PIN 9
TRIM
PIN 3
Figure 2
CONNECTION DIAGRAM
10
IN COM
2
INH
1
28V IN
5
+V OUT
4
OUT COM
LOAD
+
-
28 Vdc
SYNC
9
Figure 3
DVHV2800S Series
DVHV2800S-5.0 6
INHIBIT DRIVE CONNECTION DIAGRAMS
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
10
IN COM
2
INH
1
28V IN
5
+V OUT
4
OUT COM
LOAD
+
-
28 Vdc
2
28V OUT
4
OUT COM
1
28V IN
5
IN COM
CASE
6, 7, 8
SYNC
9
3
DVMC28 EMI FILTER DVHV2800S DC-DC CONVERTER
Figure 6 – Converter with EMI Filter
DVHV2800S Series
DVHV2800S-5.0 7
PARALLEL CONNECTION DIAGRAM
10
IN COM
2
INH
1
28V IN
5
+V OUT
4
OUT COM
LOAD
+
-
28 Vdc
2
28V OUT
4
OUT COM
1
28V IN
5
IN COM
CASE
SYNC
9
36, 7, 8
6, 7, 8
DVMC28 EMI FILTER DVHV2800S DC-DC CONVERTER
CASE
10
IN COM
2
INH
1
28V IN
5
+V OUT
4
OUT COM
SYNC
9
DVHV2800S DC-DC CONVERTER
CASE
Figure 7
DVHV2800S Series
DVHV2800S-5.0 8
OUTPUT VOLTAGE TRIM
The output voltage can be trimmed down by
connecting a resistor between the TRIM pin
(PIN 3) and the +V OUT pin (PIN 5), or can
be trimmed up by connecting a resistor
between the TRIM pin (PIN 3) and the OUT
COM pin (PIN 4). The maximum trim range
is +10% up and –20% down. The
appropriate resistor values versus the
output voltage are given in the trim table
below.
Figure 8 – Output Voltage Trim
DVHV283R3S DVHV2805S DVHV285R2S DVHV2812S DVHV2815S
+VOUT (V) RTRIM (Ω) +VOUT (V) RTRIM (Ω) +VOUT (V) RTRIM (Ω) +VOUT (V) RTRIM (Ω) +VOUT (V) RTRIM (Ω)
3.75 25.4k 5.5 19k 5.7 23k 13.2 5.93k 16.75 0
3.70 32.5k 5.4 31.5k 5.6 36.5k 13.0 10.1k 16.50 1.67k
3.65 41.8k 5.3 52.3k 5.5 59k 12.8 16.5k 16.25 5k
3.60 54.2k 5.2 94k 5.4 104k 12.6 27.1k 16.00 10k
3.55 71.6k 5.1 219k 5.3 239k 12.4 48.4k 15.75 18.3k
3.50 98.2k 5.0 - 5.2 - 12.2 113.7k 15.50 35k
3.45 143.2k 4.9 209k 5.1 249.8k 12.0 - 15.25 85k
3.40 236k 4.8 84k 5.0 104k 11.8 437k 15.00 -
3.35 543k 4.7 42.3k 4.9 55.4k 11.6 209k 14.75 475k
3.30 - 4.6 21.5k 4.8 31.1k 11.4 132k 14.50 225k
3.25 102k 4.5 9k 4.7 16.5k 11.2 93k 14.25 142k
3.20 34.8k 4.4 0 4.6 6.8k 11.0 69.5k 14.00 100k
3.15 10.5k 10.8 53.8k 13.75 75k
3.10 0 10.6 42.6k 13.50 58.3k
10.4 34.2k 13.25 46.4k
10.2 27.6k 13.00 37.5k
10.0 22.4k 12.75 30.6k
9.8 18.1k 12.50 25k
9.6 14.5k 12.25 20.5k
9.4 11.5k 12.00 16.7k
9.2 8.88k
9.0 6.63k
DVHV2800S Series
DVHV2800S-5.0 9
EFFICIENCY PERFORMANCE CURVES (TCASE = 25°C, Full Load, Unless Otherwise Specified)
V
IN = 16V VIN = 28V VIN = 40V
45
50
55
60
65
70
75
345678910
Output Power (W)
Efficiency (%)
50
55
60
65
70
75
80
3691215
Output Pow er (W)
Efficiency (%)
Figure 9 – DVHV283R3S Figure 10 – DVHV2805S / DVHV285R2S
Efficiency (%) vs. Output Power (W) Efficiency (%) vs. Output Power (W)
60
65
70
75
80
85
3691215
Output Power (W)
Efficiency (%)
60
65
70
75
80
85
3691215
Output Power (W)
Efficiency (%)
Figure 11 – DVHV2812S Figure 12 – DVHV2815S
Efficiency (%) vs. Output Power (W) Efficiency (%) vs. Output Power (W)
DVHV2800S Series
DVHV2800S-5.0 10
EMI PERFORMANCE CURVES
(TCASE = 25°C, VIN = +28V ± 5%, Full Load, Unless Otherwise Specified)
Figure 13 – DVHV2800S without EMI Filter
Figure 14 – DVHV2800S with EMI Filter
DVHV2800S Series
DVHV2800S-5.0 11
PACKAGE SPECIFICATIONS (NON-FLANGED, SEAM SEAL)
PIN FUNCTION PIN FUNCTION
1 28V IN 6 CASE
2 INHIBIT 7 CASE
3 TRIM 8 CASE
4 OUT COM 9 SYNC
5 +V OUT 10 IN COM
Figure 15 – Non-Flanged, Seam Seal Package and Pinout
DVHV2800S Series
DVHV2800S-5.0 12
PACKAGE SPECIFICATIONS (FLANGED, SEAM SEAL)
PIN FUNCTION PIN FUNCTION
1 28V IN 6 CASE
2 INHIBIT 7 CASE
3 TRIM 8 CASE
4 OUT COM 9 SYNC
5 +V OUT 10 IN COM
Figure 16 – Flanged, Seam Seal Package and Pinout
DVHV2800S Series
DVHV2800S-5.0 13
PACKAGE PIN DESCRIPTION
Pin Function Description
1 28V IN Positive Input Voltage Connection
2 INHIBIT
Logic Low = Disabled Output. Connecting the inhibit pin to input common causes
converter shutdown.
Logic High = Enabled Output. Unconnected or open collector TTL.
3 TRIM Trim Output Voltage to +10%, -20% of Nominal Value
4 OUT COM Output Common Connection
5 +V OUT Positive Output Voltage Connection
6 CASE Case Connection
7 CASE Case Connection
8 CASE Case Connection
9 SYNC Synchronization Signal
10 IN COM Input Common Connection
DVHV2800S Series
DVHV2800S-5.0 14
ENVIRONMENTAL SCREENING (Per MIL-STD-883 as referenced to MIL-PRF-38534, Class H)
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
DVHV2800S Series
DVHV2800S-5.0 15
ORDERING INFORMATION
DVHV 28 05 S F /HB - XXX
1 2 3 4 5 6 7
(1) (2) (3) (4)
Product Series Nominal Input
Voltage Output Voltage Number of Outputs
DVHV
28
28 Volts
3R3
05
5R2
12
15
3.3 Volts
5 Volts
5.2 Volts
12 Volts
15 Volts
S
Single
(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.
DVHV2800S Series
DVHV2800S-5.0 16
SMD (STANDARD MICROCIRCUIT DRAWING) NUM BERS
Standard Microcircuit
Drawing (SMD)
DVHV2800S Series
Similar Part Number
5962-1122601HXC
5962-1122601HYC
DVHV283R3S/H
DVHV283R3SF/H
5962-1122602HXC
5962-1122602HYC
DVHV2805S/H
DVHV2805SF/H
5962-1122603HXC
5962-1122603HYC
DVHV285R2S/H
DVHV285R2SF/H
5962-1122604HXC
5962-1122604HYC
DVHV2812S/H
DVHV2812SF/H
5962-1122605HXC
5962-1122605HYC
DVHV2815S/H
DVHV2815SF/H
Do not use the DVHV2800S 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 DLA Land and Maritime (Previously known as 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. All SMD products are
marked with a “Q” on the cover as specified by the QML certification mark requirement of MIL-PRF-
38534.
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.
