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DVSA2800S Series
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 MILPRF-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/in3 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 - DVSA2800S DC-DC Converter (Not To Scale)
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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
DVSA2800S Series
SPECIFICATIONS (TCASE = -55C to +125C, VIN = +28V 5%, Full Load, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous) Input Voltage (Transient, 1 second) Output Power1 Power Dissipation (Full Load, TCASE = +125C) 50 VDC 80 Volts 6 Watts 2.7 Watts Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) DVSA283R3S Min STATIC
INPUT 4 Voltage Current Ripple Current Inhibit Pin Input UVLO Turn On UVLO Turn Off OUTPUT Voltage Power
3 3 4 4 4
+10C -65C to +150C 270C 15 Grams
Parameter
Conditions
DVSA2805S Max
50 80 6 60 50 1.5 13.0 14.8 14.5 3.333 3.35 4 1.21 30 15 50 3.3 3 1000 500 -
Units Max
50 80 6 60 50 1.5 13.0 14.8 14.5 5.05 5.075 5 1.0 30 15 50 3.3 3 1000 500 V V mA mA mAp-p V V V V V V W A mVp-p mV mV % W W F kHz M kHrs
Typ
28 11.0 3.30 3.30 66 450 457
Min
15 0 9.0 12.0 11.0 4.95 4.925 0 0 65 350 100 -
Typ
28 11.0 5.00 5.00 70 450 457
Continuous Transient, 1 sec Inhibited No Load Full Load, 20Hz to 10MHz
15 0 9.0 12.0 11.0
Inhibit Pin Open Circuit Voltage
VOUT VOUT IOUT VOUT VOUT VOUT
TCASE = 25C TCASE = -55C to +125C
3.267 3.25 0 0
Current
Ripple Voltage Line Regulation Load Regulation EFFICIENCY
Full Load, 20Hz to 10MHz VIN = 15V to 50V No Load to Full Load Overload
4
62 350
LOAD FAULT POWER DISSIPATION CAPACITIVE LOAD ISOLATION MTBF (MIL-HDBK-217F)
4
Short Circuit
SWITCHING FREQUENCY 500 VDC AIF @ TC = 55C VOUT VOUT VOUT
100 -
DYNAMIC
Load Step Output Transient Load Step Recovery Line Step Recovery Turn On Delay Turn On Overshoot
2 4
Half Load to Full Load VIN = 16V to 40V VIN = 0V to 28V
-
150 450 250 600 10 0
300 700 500 1200 20 15
-
250 450 350 600 10 0
500 700 700 1200 20 25
mVPK Sec mVPK Sec mSec mVPK
Line Step Output Transient
2, 4
Notes:
1. Dependant on output voltage. 3. Derate linearly to 0 at 135C.
2. Time for output voltage to settle within 1% of its nominal value. 4. Verified by qualification testing.
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2
DVSA2800S Series
SPECIFICATIONS (TCASE = -55C to +125C, VIN = +28V 5%, Full Load, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous) Input Voltage (Transient, 1 second) Output Power1 Power Dissipation (Full Load, TCASE = +125C) 50 VDC 80 Volts 6 Watts 2.7 Watts Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) DVSA2812S Min STATIC
INPUT 4 Voltage Current Ripple Current Inhibit Pin Input UVLO Turn On UVLO Turn Off OUTPUT Voltage Power
3 3 4 4 4
+10C -65C to +150C 270C 15 Grams
Parameter
Conditions
DVSA2815S Max
50 80 6 60 50 1.5 13.0 14.8 14.5 12.12 12.18 6 0.5 30 15 50 3 3 500 500 -
Units Max
50 80 6 60 50 1.5 13.0 14.8 14.5 15.15 15.225 6 0.4 30 15 50 3 3 500 500 V V mA mA mAp-p V V V V V V W A mVp-p mV mV % W W F kHz M kHrs
Typ
28 11.0 12.0 12.0 75 450 457
Min
15 0 9.0 12.0 11.0 14.85 14.775 0 0 72 350 100 -
Typ
28 11.0 15.0 15.0 76 450 457
Continuous Transient, 1 sec Inhibited No Load Full Load, 20Hz to 10MHz
15 0 9.0 12.0 11.0
Inhibit Pin Open Circuit Voltage
VOUT VOUT IOUT VOUT VOUT VOUT
TCASE = 25C TCASE = -55C to +125C
11.88 11.82 0 0
Current
Ripple Voltage Line Regulation Load Regulation EFFICIENCY
Full Load, 20Hz to 10MHz VIN = 15V to 50V No Load to Full Load Overload
4
71 350
LOAD FAULT POWER DISSIPATION CAPACITIVE LOAD ISOLATION MTBF (MIL-HDBK-217F)
4
Short Circuit
SWITCHING FREQUENCY 500 VDC AIF @ TC = 55C VOUT VOUT VOUT
100 -
DYNAMIC
Load Step Output Transient Load Step Recovery Line Step Recovery Turn On Delay Turn On Overshoot
2 4
Half Load to Full Load VIN = 16V to 40V VIN = 0V to 28V
-
300 200 700 200 10 0
700 400 1200 600 20 50
-
400 200 700 200 10 0
700 400 1300 600 20 50
mVPK Sec mVPK Sec mSec mVPK
Line Step Output Transient
2, 4
Notes:
1. Dependant on output voltage. 3. Derate linearly to 0 at 135C.
2. Time for output voltage to settle within 1% of its nominal value. 4. Verified by qualification testing.
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3
DVSA2800S Series
SPECIFICATIONS (TCASE = -55C to +125C, VIN = +28V 5%, Full Load, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous) Input Voltage (Transient, 1 second) Output Power1 Power Dissipation (Full Load, TCASE = +125C) 50 VDC 80 Volts 6 Watts 2.7 Watts Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) DVSA285R2S Min STATIC
INPUT 4 Voltage Current Ripple Current Inhibit Pin Input UVLO Turn On UVLO Turn Off OUTPUT Voltage Power
3 3 4 4 4
+10C -65C to +150C 270C 15 Grams
Parameter
Conditions
Units Max
50 80 6 60 50 1.5 13.0 14.8 14.5 5.252 5.278 5.2 1.0 30 15 50 3.3 3 1000 500 V V mA mA mAp-p V V V V V V W A mVp-p mV mV % W W F kHz M kHrs
Typ
28 11.0 5.20 5.20 70 450 457
Continuous Transient, 1 sec Inhibited No Load Full Load, 20Hz to 10MHz
15 0 9.0 12.0 11.0
Inhibit Pin Open Circuit Voltage
VOUT VOUT IOUT VOUT VOUT VOUT
TCASE = 25C TCASE = -55C to +125C
5.148 5.122 0 0
Current
Ripple Voltage Line Regulation Load Regulation EFFICIENCY
Full Load, 20Hz to 10MHz VIN = 15V to 50V No Load to Full Load Overload
4
65 350
LOAD FAULT POWER DISSIPATION CAPACITIVE LOAD ISOLATION MTBF (MIL-HDBK-217F)
4
Short Circuit
SWITCHING FREQUENCY 500 VDC AIF @ TC = 55C VOUT VOUT VOUT
100 -
DYNAMIC
Load Step Output Transient Load Step Recovery Line Step Recovery Turn On Delay Turn On Overshoot
2 4
Half Load to Full Load VIN = 16V to 40V VIN = 0V to 28V
-
250 450 350 600 10 0
500 700 700 1200 20 25
mVPK Sec mVPK Sec mSec mVPK
Line Step Output Transient
2, 4
Notes:
1. Dependant on output voltage. 3. Derate linearly to 0 at 135C.
2. Time for output voltage to settle within 1% of its nominal value. 4. Verified by qualification testing.
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4
DVSA2800S Series
BLOCK DIAGRAM
PIN 6 28V IN L1 C1 IN COM PIN 7 Q1 MAGNETIC FEEDBACK Rs1 VOLTAGE AND CURRENT AMPLIFIERS C2 Rs2 OUT COM PIN 2 D1 PIN 1 +V OUT
T1
UNDER VOLTAGE SHUTDOWN
PRIMARY HOUSEKEEPING SUPPLY INH PIN 5
PWM CONTROL
SECONDARY HOUSEKEEPING SUPPLY
Figure 2
CONNECTION DIAGRAM
6 28V IN 28 Vdc 5 INH 7 IN COM OUT COM +V OUT
1 LOAD
+ -
2
Figure 3
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5
DVSA2800S Series
INHIBIT DRIVE CONNECTION DIAGRAMS
28V IN 6 10K INH 5 BIAS
OPTOISOLATOR
28V IN 6 10K INH 5 BIAS
OPTIONAL CAPACITOR IN COM 7
12V
OPTIONAL CAPACITOR IN COM 7
12V
Figure 4 - Internal Inhibit Circuit and Recommended Drive (Shown with optional capacitor for turn-on delay)
Figure 5 - Isolated Inhibit Drive (Shown with optional capacitor for turn-on delay)
EMI FILTER HOOKUP DIAGRAM
DVMA28 EMI FILTER 1 28V IN 28 Vdc 28V OUT 5 2 DVSA2800S DC-DC CONVERTER 6 28V IN +V OUT LOAD INH OUT COM 2 1
+ 5 IN COM OUT COM 3 CASE 4
7 IN COM 8
Figure 6 - Converter with EMI Filter
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6
DVSA2800S Series
EFFICIENCY PERFORMANCE CURVES (TCASE = 25C, Full Load, Unless Otherwise Specified)
VIN = 16V VIN = 28V VIN = 40V
0.4
0.8
1.2
1.6
2
2.4
2.8
3.2
3.6
4
70 65 60 55 50 45 40 35 30 25 20
80 70 Efficiency (%) 60 50 40 30 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 20
Efficiency (%)
Output Pow er (W)
Output Pow er (W)
Figure 7 - DVSA283R3S Efficiency (%) vs. Output Power (W)
Figure 8 - DVSA2805S / DVSA285R2S Efficiency (%) vs. Output Power (W)
90 80 Efficiency (%)
Efficiency (%)
80 70 60 50 40 30
70 60 50 40 30 3 6 0.6 1.2 1.8 2.4 3.6 4.2 4.8 5.4 20
3
0.6
1.2
1.8
2.4
3.6
4.2
4.8
Output Pow er (W)
Output Pow er (W)
Figure 9 - DVSA2812S Efficiency (%) vs. Output Power (W)
Figure 10 - DVSA2815S Efficiency (%) vs. Output Power (W)
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5.4
6
20
7
DVSA2800S Series
EMI PERFORMANCE CURVES
(TCASE = 25C, VIN = +28V 5%, Full Load, Unless Otherwise Specified)
Figure 11 - DVSA2800S without EMI Filter
Figure 12 - DVSA2800S with EMI Filter
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8
DVSA2800S Series
PACKAGE SPECIFICATIONS
TOP VIEW
SIDE VIEW
PIN 1 2 3 4 5 6 7 8
FUNCTION +V OUT OUT COM N/C N/C INHIBIT 28V IN IN COM CASE
BOTTOM VIEW
Figure 13 - Package and Pinout (Dimensional Limits are 0.005" Unless Otherwise Stated)
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9
DVSA2800S Series
PACKAGE PIN DESCRIPTION
Pin
1 2 3 4 5 6 7 8
Function
+V OUT OUT COM N/C N/C INHIBIT 28V IN IN COM
CASE
Description
Positive Output Voltage Connection Output Common Connection No Connection No Connection Logic Low = Disabled Output. Connecting the inhibit pin to input common causes converter shutdown. Logic High = Enabled Output. Unconnected or open collector TTL. Positive Input Voltage Connection Input Common Connection Case Connection
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10
DVSA2800S Series
ENVIRONMENTAL SCREENING (100% Tested Per MIL-STD-883 as referenced to MIL-PRF-38534)
Screening NonDestructive Bond Pull Internal Visual Temperature Cycling Constant Acceleration PIND Pre Burn-In Electrical MIL-STD-883 Standard
(No Suffix)
Extended /ES * *
HB /HB * * * *
Class H /H * * * *
Class K /K * * * * * * *
Method 2023 Method 2017, 2032 Internal Procedure Method 1010, Condition C Method 1010, -55C to 125C Method 2001, 3000g, Y1 Direction Method 2001, 500g, Y1 Direction Method 2020, Condition A2 100% at 25C Method 1015, 320 hours at +125C Method 1015, 160 hours at +125C 96 hours at +125C 24 hours at +125C MIL-PRF-38534, Group A1 100% at 25C Method 1014, Fine Leak, Condition A Method 1014, Gross Leak, Condition C -3 Dip (1 x 10 ) Method 20123 Method 2009 1. 2. 3.
*
*
* *
Burn-In
* *
*
*
*
Final Electrical
* * *
*
*
*
Hermeticity
*
* *
* *
* *
Radiography External Visual Notes:
* * * * * *
100% R&R testing at -55C, +25C, and +125C with all test data included in product shipment. PIND test Certificate of Compliance included in product shipment. Radiographic test Certificate of Compliance and film(s) included in product shipment.
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11
DVSA2800S Series
ORDERING INFORMATION
DVSA 1
28 2
05 3
S 4
R 5
/HB 6
-
XXX 7
(1) Product Series
DVSA
(2) Nominal Input Voltage
28 28 Volts
(3) Output Voltage
3R3 05 5R2 12 15 3.3 Volts 5 Volts 5.2 Volts 12 Volts 15 Volts
(4) Number of Outputs
S Single
(5) Rad-Hard Option2
None R Standard 100 kRad
(6) Screening Code1,3
None /ES /HB /H /K Standard Extended HB Class H Class K
(7) Additional Screening Code
Contact Sales
Notes:
1. 2. 3.
Contact the VPT Inc. Sales Department for availability of Class H (/H) or Class K (/K) qualified products. VPT Inc. is not currently certified to a DSCC certified radiation hardness assurance program. 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.
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12
DVSA2800S Series
SMD (STANDARD MICROCIRCUIT DRAWING) NUMBERS
Standard Microcircuit Drawing (SMD)
5962-0324101HXC 5962-0324102HXC 5962-0324103HXC 5962-0324104HXC 5962-0324105HXC
DVSA2800S Series Similar Part Number
DVSA283R3S/H DVSA2805S/H DVSA285R2S/H DVSA2812S/H DVSA2815S/H
Do not use the DVSA2800S 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: Fax: E-mail: (425) 353-3010 (425) 353-4030 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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13

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