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DVETR2800S Series
HIGH RELIABILITY HYBRID DC-DC CONVERTERS WITH INTEGRAL EMI FILTER
DESCRIPTION
The DVETR 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 DVETR series is a fault tolerant magnetic feedback circuit. Operating at a nominal fixed frequency of 500 kHz per stage, these regulated, isolated units utilize well-controlled undervoltage lockout circuitry to eliminate slow startup 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 40 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 Solder Seal Hermetic Package High Power Density: > 30 W/in3 Custom Versions Available Additional Environmental Screening Available No External EMI Filter Required Meets MIL-STD-461C and MIL-STD-461D EMC Requirements Protects Against Conducted Susceptibility Specified in MIL-STD-461C, CS01 and CS02 Flanged and Non-flanged Versions Available MIL-PRF-38534 Element Evaluated Components
Figure 1 - DVETR2800S / DVETR2800SF 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
DVETR2800S 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 40 Watts 14 Watts Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) (Un-Flanged / Flanged) DVETR283R3S Min
15 0
4
+15C -65C to +150C 270C (51 / 55) Grams
Parameter STATIC
INPUT 4 Voltage Current Inhibit Pin Input UVLO Turn On UVLO Turn Off OUTPUT Voltage Power
3 3 4 4
Conditions
DVETR2805S Max
50 80 6 90 1.5 13.0 14.8 14.5
Typ
28 11.0 3.30 3.30 475 413
Min
15 0 9.0 12.0 11.0 4.95 4.90 0 0 70 450 100 -
Typ
28 11.0 5.00 5.00 500 413
Max
50 80 6 90 1.5 13.0 14.8 14.5 5.05 5.10 30 6.0 50 20 50 16 16 1000 550 -
Units
Continuous Transient, 1 sec Inhibited No Load
V V mA mA V V V V V V W A mVp-p mV mV % W W F kHz M kHrs
Inhibit Pin Open Circuit Voltage
9.0 12.0 11.0
VOUT VOUT VOUT VOUT VOUT VOUT
TCASE = 25C TCASE = -55C to +125C
3.267 3.25 0 0
3.333 3.35 20 6.06 50 20 50 16 16 1000 550 -
Current
Ripple Voltage Line Regulation Load Regulation EFFICIENCY
Full Load, 20Hz to 10MHz VIN = 15V to 50V No Load to Full Load Overload
4
65 400
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
-
150 100 -
400 500 600 500 20 30
-
150 100 -
500 500 600 500 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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DVETR2800S 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 40 Watts 14 Watts Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) (Un-Flanged / Flanged) DVETR2812S Min
15 0
4
+15C -65C to +150C 270C (51 / 55) Grams
Parameter STATIC
INPUT 4 Voltage Current Inhibit Pin Input UVLO Turn On UVLO Turn Off OUTPUT Voltage Power
3 3 4 4
Conditions
DVETR2815S Max
50 80 6 90 1.5 13.0 14.8 14.5 12.12 12.18 40 3.33 50 20 50 14 14 500 550 -
Typ
28 11.0 12.0 12.0 475 413
Min
15 0 9.0 12.0 11.0 14.85 14.775 0 0 75 400 100 -
Typ
28 11.0 15.0 15.0 475 413
Max
50 80 6 90 1.5 13.0 14.8 14.5 15.15 15.225 40 2.67 50 20 50 14 14 500 550 -
Units
Continuous Transient, 1 sec Inhibited No Load
V V mA mA V V V V V V W A mVp-p mV mV % W W F kHz M kHrs
Inhibit Pin Open Circuit Voltage
9.0 12.0 11.0
VOUT VOUT VOUT VOUT VOUT VOUT
TCASE = 25C TCASE = -55C to +125C
11.88 11.72 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
74 400
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
-
800 300 -
700 500 1200 500 20 50
-
800 300 -
800 500 1200 500 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
DVETR2800S 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 40 Watts 14 Watts Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) (Un-Flanged / Flanged) DVETR285R2S Min
15 0
4
+15C -65C to +150C 270C (51 / 55) Grams
Parameter STATIC
INPUT 4 Voltage Current Inhibit Pin Input UVLO Turn On UVLO Turn Off OUTPUT Voltage Power
3 3 4 4
Conditions
Typ
28 11.0 5.20 5.20 500 413
Max
50 80 6 90 1.5 13.0 14.8 14.5 5.26 5.31 30 6.0 50 20 50 16 16 1000 550 -
Units
Continuous Transient, 1 sec Inhibited No Load
V V mA mA V V V V V V W A mVp-p mV mV % W W F kHz M kHrs
Inhibit Pin Open Circuit Voltage
9.0 12.0 11.0
VOUT VOUT VOUT VOUT VOUT VOUT
TCASE = 25C TCASE = -55C to +125C
5.14 5.09 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
70 400
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
-
150 100 -
500 500 600 500 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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DVETR2800S Series
BLOCK DIAGRAM
PIN 1 28V IN EMI FILTER IN COM PIN 10 Q1 MAGNETIC FEEDBACK VOLTAGE AND CURRENT AMPLIFIERS -S PIN 3 +S PIN 6 C2 Rs2 OUT COM PIN 4 T1 D1 PIN 5 +V OUT
UNDER VOLTAGE SHUTDOWN
Rs1
PRIMARY HOUSEKEEPING SUPPLY INH PIN 2
PWM CONTROL
SECONDARY HOUSEKEEPING SUPPLY
Figure 2
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5
DVETR2800S Series
CONNECTION DIAGRAM
1 28V IN +V OUT +S 28 Vdc
5 6 LOAD -S 3 4 IN COM OUT COM
+ -
2 INH
10
Figure 3
INHIBIT DRIVE CONNECTION DIAGRAMS
28V IN 1 10K INH 2 BIAS
28V IN 1 10K OPTOISOLATOR INH 2 BIAS
OPTIONAL CAPACITOR IN COM 10
12V
OPTIONAL CAPACITOR IN COM 10
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)
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6
DVETR2800S Series
OUTPUT VOLTAGE TRIM
+V OUT PIN 5 100 +S PIN 6 10K R-TRIM
The output voltage can be trimmed up by connecting a resistor between the +S pin (PIN 6) and the OUT COM pin (PIN 4). The maximum trim range is +10%. The appropriate resistor values versus the output voltage are given in the trim table below. The -S pin should be connected to the OUT COM pin.
+
2.5V
(TRIM UP)
+ -
Ri -S PIN 3 100 OUT COM PIN 4
Figure 6 - Output Voltage Trim
DVETR283R3S
+VOUT (V) 3.60 3.55 3.50 3.45 3.40 3.35 3.30 RTRIM () 1.13k 1.36k 1.72k 2.32k 3.59k 7.87k -
DVETR2805S
+VOUT (V) 5.50 5.45 5.40 5.35 5.30 5.25 5.20 5.15 5.10 5.05 5.00 RTRIM () 1.05k 1.18k 1.33k 1.54k 1.82k 2.22k 2.86k 4k 6.67k 20k -
DVETR285R2S
+VOUT (V) 5.70 5.65 5.60 5.55 5.50 5.45 5.40 5.35 5.30 5.25 5.20 RTRIM () 1.09k 1.22k 1.39k 1.60k 1.89k 2.31k 2.97k 4.16k 6.93k 20.8k -
DVETR2812S
+VOUT (V) 13.2 13.1 13.0 12.9 12.8 12.7 12.6 12.5 12.4 12.3 12.2 12.1 12.0 RTRIM () 1.09k 1.19k 1.33k 1.49k 1.7k 1.98k 2.38k 2.96k 3.94k 5.86k 11.4k 242k -
DVETR2815S
+VOUT (V) 16.50 16.40 16.30 16.20 16.10 16.00 15.90 15.80 15.70 15.60 15.50 15.40 15.30 15.20 15.10 15.00 RTRIM () 1.09k 1.18k 1.28k 1.4k 1.54k 1.71k 1.94k 2.22k 2.61k 3.16k 4k 5.46k 8.57k 20k Note 1 -
Notes:
1. Connect R-TRIM = 400 from +VOUT (PIN 5) to +S (PIN 6).
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7
DVETR2800S Series
EFFICIENCY PERFORMANCE CURVES (TCASE = 25C, Full Load, Unless Otherwise Specified)
VIN = 16V VIN = 28V VIN = 40V
70
75
65 60 Efficiency (%)
Efficiency (%)
70
65
55
60
50 45
55
50
40 0 5 10 Output Power (W) 15 20
45 0 5 10 15 20 25 30 Output Power (W)
Figure 7 - DVETR283R3S Efficiency (%) vs. Output Power (W)
Figure 8 - DVETR2805S / DVETR285R2S Efficiency (%) vs. Output Power (W)
80
80
75
75
Efficiency (%)
65
Efficiency (%)
70
70
65
60
60
55 0 10 20 Output Pow er (W) 30 40
55 0 10 20 Output Power (W) 30 40
Figure 9 - DVETR2812S Efficiency (%) vs. Output Power (W)
Figure 10 - DVETR2815S Efficiency (%) vs. Output Power (W)
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8
DVETR2800S Series
EMI PERFORMANCE CURVES
(TCASE = 25C, VIN = +28V 5%, Full Load, Unless Otherwise Specified)
Figure 11 - MIL-STD-461C DVETR2800S
Figure 12 - MIL-STD-461D DVETR2800S
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9
DVETR2800S Series
PACKAGE SPECIFICATIONS (NON-FLANGED, SOLDER SEAL)
TOP VIEW
SIDE VIEW
PIN 1 2 3 4 5 6 7 8 9 10
FUNCTION 28V IN INHIBIT -S OUT COM +V OUT +S CASE N/C N/C IN COM
BOTTOM VIEW
Figure 13 - Non-Flanged, Solder Seal Tin Plated Package and Pinout (Dimensional Limits are 0.005" Unless Otherwise Stated)
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10
DVETR2800S Series
PACKAGE SPECIFICATIONS (FLANGED, SOLDER SEAL)
TOP VIEW
SIDE VIEW
PIN 1 2 3 4 5 6 7 8 9 10 BOTTOM VIEW
FUNCTION 28V IN INHIBIT -S OUT COM +V OUT +S CASE N/C N/C IN COM
Figure 14 - Flanged, Solder Seal Tin Plated Package and Pinout (Dimensional Limits are 0.005" Unless Otherwise Stated)
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11
DVETR2800S Series
PACKAGE PIN DESCRIPTION
Pin
1 2 3 4 5 6 7 8 9 10
Function
28V IN INHIBIT -S OUT COM +V OUT +S CASE N/C N/C IN COM
Description
Positive Input Voltage Connection Logic Low = Disabled Output. Connecting the inhibit pin to input common causes converter shutdown. Logic High = Enabled Output. Unconnected or open collector TTL. Return Sense Output Common Connection Positive Output Voltage Connection Positive Sense Case Connection No Connection No Connection Input Common Connection
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12
DVETR2800S Series
ENVIRONMENTAL SCREENING (100% Tested Per MIL-STD-883 as referenced to MIL-PRF-38534)
Extended /ES * *
Screening NonDestructive Bond Pull Internal Visual Temperature Cycling Constant Acceleration PIND Pre Burn-In Electrical
MIL-STD-883
Standard
(No Suffix)
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
*
*
* *
Burn-In
* *
*
Final Electrical
* * *
Hermeticity
*
Radiography External Visual
*
*
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13
DVETR2800S Series
ORDERING INFORMATION
DVETR 1
28 2
05 3
S 4
F 5
/ES 6
-
XXX 7
(1) Product Series
DVETR
(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) Package Option
None F Non-Flanged Flanged
(6) Screening Code1
None /ES Standard Extended
(7) Additional Screening Code
Contact Sales
Notes:
1.
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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14
DVETR2800S 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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