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DVST2800T Series
HIGH RELIABILITY DC-DC CONVERTERS
DESCRIPTION
The DVST series of high reliability DC-DC converters contains internal EMI filtering and meets MIL-STD461C and MIL-STD-461D for conducted emissions, providing a one piece COTS solution for power conversion applications. The DVST series is operable over a wide (-55C to +100C) temperature range with no power derating. Unique to the DVST series is a magnetic feedback circuit that is radiation immune. The three low noise outputs are fully isolated from each other, allowing for maximum flexibility in system design. 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
* * * * * * * * * * * * Up to 30 Watts Output Power Three Fully Isolated Outputs Wide Input Voltage Range: 15 to 50 Volts per MIL-STD-704 with 80 Volt Transient for 1 sec Internal Filter Meets MIL-STD-461C and MILSTD-461D Conducted Emissions Requirements NO Use of Optoisolators Undervoltage Lockout Indefinite Short Circuit Protection Current Limit Protection Low Output Noise Custom Versions Available Low Profile (0.380 inches) Package Military Environmental Screening Available
Figure 1 - DVST2800T DC-DC Converter (Not To Scale)
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
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DVST2800T Series
SPECIFICATIONS (TCASE = -55C to +100C, 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 = +100C) INPUT Parameter STATIC
INPUT Voltage Current Inhibit Pin Input Inhibit Pin Open Circuit Voltage UVLO Turn On UVLO Turn Off SWITCHING FREQUENCY ISOLATION Input / Output / Case 500 VDC 11.8 225 100 325 Continuous Transient, 1 sec Inhibited No Load 0 11.0 1.6 65 15 28 50 80 5.0 100 1.5 14.0 14.9 V V mA mA V V V V kHz M
50 VDC 80 Volts 30 Watts 15 Watts
Operating Case Temperature Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum)
-55C to +100C -55C to +125C 270C 100 Grams
Conditions Min
DVST2800T Typ Max
Units
MAIN OUTPUT Parameter STATIC
OUTPUT Voltage Power
2 2
Conditions
DVST283R3xxyyT Min Typ
3.30 3.30
DVST285xxyyT Min
4.95 4.90 0 0 20 5 10 76
Units
Max
3.34 3.37 15 4.5
Typ
5.00 5.00
Max
5.05 5.10 20 4.0 50 20 30 1000 V V W A mVp-p mV mV % F mVPK Sec mVPK Sec mSec mVPK
VOUT VOUT VOUT VOUT VOUT VOUT
TCASE = 25C TCASE = -55C to +100C
3.26 3.23 0 0
Current
Ripple Voltage Line Regulation Load Regulation EFFICIENCY CAPACITIVE LOAD
Full Load, 20Hz to 10MHz VIN = 15V to 50V No Load to Full Load
20 5 10 73
50 20 30 1000
DYNAMIC
Load Step Output Transient Load Step Recovery Line Step Recovery Turn On Delay Turn On Overshoot
3
VOUT VOUT VOUT
Half Load to Full Load VIN = 15V to 50V VIN = 0V to 28V
200 200 400 400 15 0
400 400 600 600 20 30
200 200 400 400 15 0
400 400 600 600 20 50
Line Step Output Transient
3
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DVST2800T Series
SPECIFICATIONS (TCASE = -55C to +100C, 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 = +100C) MAIN OUTPUT Parameter STATIC
OUTPUT Voltage Power
2 2
50 VDC 80 Volts 30 Watts 15 Watts
Operating Case Temperature Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum)
-55C to +100C -55C to +125C 270C 100 Grams
Conditions
DVST281R8xxyyT Min Typ
1.80 1.80
DVST286R25xxyyT Min
6.19 6.12 0 0 20 5 10 76
Units
Max
1.82 1.84 13.5 7.5
Typ
6.25 6.25
Max
6.31 6.38 20 3.2 50 20 30 1000 V V W A mVp-p mV mV % F mVPK Sec mVPK Sec mSec mVPK
VOUT VOUT VOUT VOUT VOUT VOUT
TCASE = 25C TCASE = -55C to +100C
1.78 1.76 0 0
Current
Ripple Voltage Line Regulation Load Regulation EFFICIENCY CAPACITIVE LOAD
Full Load, 20Hz to 10MHz VIN = 15V to 50V No Load to Full Load
20 5 10 66
75 20 30 1000
DYNAMIC
Load Step Output Transient Load Step Recovery Line Step Recovery Turn On Delay Turn On Overshoot
3
VOUT VOUT VOUT
Half Load to Full Load VIN = 15V to 50V VIN = 0V to 28V
200 500 400 400 15 0
400 750 600 750 20 20
200 200 400 400 15 0
400 400 600 600 20 50
Line Step Output Transient
3
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DVST2800T Series
SPECIFICATIONS (TCASE = -55C to +100C, 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 = +100C) MAIN OUTPUT Parameter STATIC
OUTPUT Voltage Power
2 2
50 VDC 80 Volts 30 Watts 15 Watts
Operating Case Temperature Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum)
-55C to +100C -55C to +125C 270C 100 Grams
Conditions
DVST2812xxyyT Min Typ
12.00 12.00
Units
Max
12.12 12.24 20 1.67 V V W A mVp-p mV mV % 500 F mVPK Sec mVPK Sec mSec mVPK
VOUT VOUT VOUT VOUT VOUT VOUT
TCASE = 25C TCASE = -55C to +100C
11.88 11.76
Current
Ripple Voltage Line Regulation Load Regulation EFFICIENCY CAPACITIVE LOAD
Full Load, 20Hz to 10MHz VIN = 15V to 50V No Load to Full Load 76
50 50 50
DYNAMIC
Load Step Output Transient Load Step Recovery Line Step Recovery Turn On Delay Turn On Overshoot
3
VOUT VOUT VOUT
Half Load to Full Load VIN = 15V to 50V VIN = 0V to 28V
200 200 400 200 15 0
400 400 600 600 20 50
Line Step Output Transient
3
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DVST2800T Series
SPECIFICATIONS (TCASE = -55C to +100C, 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 = +100C) AUXILIARY OUTPUT Parameter STATIC
OUTPUT Voltage Power
2 2
50 VDC 80 Volts 30 Watts 15 Watts
Operating Case Temperature Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum)
-55C to +100C -55C to +125C 270C 100 Grams
Conditions Min
VOUT VOUT VOUT VOUT VOUT VOUT Full Load, 20Hz to 10MHz VIN = 15V to 50V No Load to Full Load TCASE = 25C TCASE = -55C to +100C
DVST28x12yyT Typ
12.00 12.00
DVST28x15yyT Min
14.70 14.55 0 0 25 5 10
Units
Max
12.24 12.36 5 0.42
Typ
15.00 15.00
Max
15.30 15.45 5 0.33 50 20 50 500 V V W A mVp-p mV mV F mVPK Sec mVPK Sec mSec mVPK
11.76 11.64 0 0
Current
Ripple Voltage Line Regulation Load Regulation CAPACITIVE LOAD
25 5 10
50 20 50 500
DYNAMIC
Load Step Output Transient Load Step Recovery Line Step Recovery Turn On Delay Turn On Overshoot
3
VOUT VOUT VOUT
Half Load to Full Load VIN = 15V to 50V VIN = 0V to 28V
200 100 100 100 2 100
400 200 400 200 20 250
200 100 100 100 2 100
400 200 400 200 20 250
Line Step Output Transient
3
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DVST2800T Series
SPECIFICATIONS (TCASE = -55C to +100C, 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 = +100C) AUXILIARY OUTPUT Parameter STATIC
OUTPUT Voltage Power
2 2
50 VDC 80 Volts 30 Watts 15 Watts
Operating Case Temperature Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum)
-55C to +100C -55C to +125C 270C 100 Grams
Conditions
DVST28x3R3yyT Min Typ
3.30 3.30
DVST28x5yyT Min
4.90 4.85
Units Max
5.10 5.15 5 1.0 V V W A mVp-p mV mV F mVPK Sec mVPK Sec mSec mVPK
Max
3.37 3.40 4 1.2
Typ
5.00 5.00
VOUT VOUT VOUT VOUT VOUT VOUT
TCASE = 25C TCASE = -55C to +100C
3.23 3.20
Current
Ripple Voltage Line Regulation Load Regulation CAPACITIVE LOAD
Full Load, 20Hz to 10MHz VIN = 15V to 50V No Load to Full Load
25 5 10
50 20 30 1000
25 5 10
50 20 30 1000
DYNAMIC
Load Step Output Transient Load Step Recovery Line Step Recovery Turn On Delay Turn On Overshoot
3
VOUT VOUT VOUT
Half Load to Full Load VIN = 15V to 50V VIN = 0V to 28V
100 100 100 100 2 0
200 200 200 200 20 50
100 100 100 100 2 0
200 200 200 200 20 50
Line Step Output Transient
3
Notes:
1. Dependant on output voltage. 2. Derate linearly from full rating at 100C to 0 at 110C. 3. Time for output voltage to settle to within 1% of its nominal value.
CONNECTION DIAGRAM
1 28V IN +MAIN OUT MAIN RET 28 Vdc +AUX1 OUT DVST2800T 4 INH AUX1 RET +AUX2 OUT 3 IN COM 2 CASE AUX2 RET 5 6 7 8 9 10 LOAD LOAD LOAD
+ -
Figure 2
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DVST2800T Series
BLOCK DIAGRAM
PIN 1 28V IN PIN 2 CASE VOLTAGE AND CURRENT AMPLIFIERS PIN 5 +V OUT
OUT COM PIN 6
IN COM PIN 3 PWM CONTROL
MAGNETIC FEEDBACK
SECONDARY HOUSEKEEPING SUPPLY UNDER VOLTAGE SHUTDOWN
LINEAR REGULATOR
PIN 7 +V OUT
INH PIN 4
PRIMARY HOUSEKEEPING SUPPLY
OUT COM PIN 8 LINEAR REGULATOR PWM CONTROL OUT COM PIN 10 PIN 9 +V OUT
Figure 3
INHIBIT DRIVE CONNECTION DIAGRAMS
28V IN 1 20K INH 4 BIAS OPTOISOLATOR
28V IN 1 20K INH 4 BIAS
OPTIONAL CAPACITOR IN COM 3
11V
OPTIONAL CAPACITOR IN COM 3
11V
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)
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DVST2800T Series
EFFICIENCY PERFORMANCE CURVES (TCASE = 25C, Full Load, Unless Otherwise Specified)
VIN = 15V VIN = 28V VIN = 50V
Figure 6 - DVST2851212T Efficiency (%) vs. Output Power (W)
Figure 7 - DVST2851515T Efficiency (%) vs. Output Power (W)
Figure 8 - DVST283R31212T Efficiency (%) vs. Output Power (W)
Figure 9 - DVST283R31515T Efficiency (%) vs. Output Power (W)
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DVST2800T Series
EMI PERFORMANCE CURVES
(TCASE = +25C, VIN = +28V 5%, Full Load, Unless Otherwise Specified)
Figure 10 - MIL-STD-461C CE03 Conducted Emissions
Figure 11 - MIL-STD-461D CE102 Conducted Emissions
ENVIRONMENTAL QUALIFICATION
Description
Temperature Cycling Constant Acceleration Mechanical Shock Random Vibration Moisture Resistance Barometric Pressure Salt Atmosphere Resistance to Solvents Solderability
MIL-STD-883
1010 2001 2002 Cond. A 2026 Cond. D 1004 1001 Cond. D 1009 Cond. B 2015 2003
MIL-STD-202
102A 212A 213B Cond. D 214A Cond. D 106F 105C Cond. C 101D Cond. B 215J 208H
Test Condition
-55C to +100C, 100 cycles 500g, 1min. 500g, 1ms 11.6G RMS, operating 10 days 70,000 ft, operating 48 hrs.
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DVST2800T Series
PACKAGE SPECIFICATIONS
PIN 1 2 3 4 5 6 7 8 9 10
FUNCTION 28V IN CASE IN COM INHIBIT +MAIN OUT MAIN RET +AUX1 OUT AUX1 RET +AUX2 OUT AUX2 RET
Note:
Additional mounting options are available. Consult the factory for details.
Figure 12 - Package and Pinout (Dimensional Limits are 0.005" Unless Otherwise Stated)
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DVST2800T Series
PACKAGE PIN DESCRIPTION
Pin
1 2 3 4 5 6 7 8 9 10
Function
28V IN CASE IN COM INHIBIT +MAIN OUT MAIN RET +AUX1 OUT AUX1 RET +AUX2 OUT AUX2 RET
Description
Positive Input voltage Connection Case Connection Input Common Connection 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. Main Positive Output Voltage Connection Main Output Return Connection Auxiliary Positive Output Voltage Connection Auxiliary Output Return Connection Auxiliary Positive Output Voltage Connection Auxiliary Output Return Connection
ENVIRONMENTAL SCREENING
Screening
Pre-Cap Inspection Temperature Cycling Burn-In Final Electrical Final Inspection IPC-A-610 Class II
Condition
Standard (No Suffix)
*
Military /ML
* *
-55C, 100C, 10 Cycles 96 hours at +100C 12 hours at +100C 100% at -55C, 25C, 100C1 100% at 25C MIL-STD-883, Test Method 2009 * * *
* * *
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DVST2800T Series
ORDERING INFORMATION
DVST 1
28 2
5 3
15 4
15 5
T 6 7
/ML 8
-
XXX 9
(1) Product Series
DVST
(2) Nominal Input Voltage
28 28 Volts
(3) Main Output
1R8 3R3 5 6R25 12 1.8 Volts 3.3 Volts 5 Volts 6.25 Volts 12 Volts
(4) Auxiliary Output 1
3R3 5 12 15 3.3 Volts 5 Volts 12 Volts 15 Volts
(5) Auxiliary Output 2
5 12 15 5 Volts 12 Volts 15 Volts
(6) Number of Outputs
T Triple
(7) Package Option
None Standard
(8) Screening Code1
None /ML Standard Military
(9) Additional Screening Code
Contact Sales
Notes:
1.
VPT Inc. reserves the right to ship higher screened 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, or packaging requirements.
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DVST2800T Series
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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