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DVCH2800D Series
HIGH RELIABILITY HYBRID DC-DC CONVERTERS
DESCRIPTION
The DVCH 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 DVCH series is a magnetic feedback circuit that is radiation immune. Operating at a nominal fixed frequency of 400 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: 12 to 50 Volts per MIL-STD-704 Up to 1.5 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 Precision Projection Welded Hermetic Package High Power Density: > 7 W/in3 Custom Versions Available Additional Environmental Screening Available Meets MIL-STD-461C and MIL-STD-461D EMC Requirements When Used With a DVMSA28 EMI Filter MIL-PRF-38534 Element Evaluated Components
Figure 1 - DVCH2800D 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
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DVCH2800D 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 1.5 Watts 0.6 Watts Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) DVCH2805D Min STATIC
INPUT 4 Voltage Current Ripple Current Inhibit Pin Input UVLO Turn On OUTPUT Voltage Power
3 4 4
+5C -65C to +150C 270C 11 Grams
Parameter
Conditions
DVCH2812D Max
50 80 3.5 10 30 1.5 11.0 11.5 5.05 5.20 1.5 1.2 0.24 50 150 400 250 3 4 500 475 -
Units Max
50 80 3.5 12 30 1.5 11.0 11.5 12.12 12.48 1.5 1.2 .1 100 150 700 250 3 4.5 200 475 V V mA mA mAp-p V V V V V W W A mVp-p mV mV mV % W W F kHz M kHrs
Typ
28 9.0 5.00 5.00 79 400 841
Min
12 0 8.0 6.5 11.88 11.52 0 0 0 74 325 100 -
Typ
28 9.0 12.0 12.0 79 400 841
Continuous Transient, 1 sec Inhibited No Load Full Load, 20Hz to 10MHz
12 0 8.0 6.5
Inhibit Pin Open Circuit Voltage
VOUT VOUT Total VOUT
TCASE = 25C TCASE = -55C to +125C Either Output Either Output Full Load, 20Hz to 10MHz VIN = 12V to 50V 10% Load to Full Load 50% Load to Full Load Overload
4
4.95 4.80 0 0 0 72 325
Current
3
IOUT VOUT VOUT VOUT VOUT
Ripple Voltage Line Regulation Load Regulation Load Regulation EFFICIENCY
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 = 12V to 50V VIN = 0V to 28V
-
100 200 200 400 15 0
300 500 400 600 20 25
-
100 100 300 300 15 0
300 400 600 600 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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DVCH2800D 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 1.5 Watts 0.6 Watts Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) DVCH2815D Min STATIC
INPUT 4 Voltage Current Ripple Current Inhibit Pin Input UVLO Turn On OUTPUT Voltage Power
3 4 4
+5C -65C to +150C 270C 11 Grams
Parameter
Conditions
Units Max
50 80 3.5 14 30 1.5 11.0 11.5 15.15 15.60 1.5 1.2 0.08 100 150 700 250 3 4.5 200 475 V V mA mA mAp-p V V V V V W W A mVp-p mV mV mV % W W F kHz M kHrs
Typ
28 9.0 15.0 15.0 79 400 841
Continuous Transient, 1 sec Inhibited No Load Full Load, 20Hz to 10MHz
12 0 8.0 6.5
Inhibit Pin Open Circuit Voltage
VOUT VOUT Total VOUT
TCASE = 25C TCASE = -55C to +125C Either Output Either Output Full Load, 20Hz to 10MHz VIN = 12V to 50V 10% Load to Full Load 50% Load to Full Load Overload
4
14.85 14.40 0 0 0 74 325
Current
3
IOUT VOUT VOUT VOUT VOUT
Ripple Voltage Line Regulation Load Regulation Load Regulation EFFICIENCY
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 = 12V to 50V VIN = 0V to 28V
-
100 100 300 300 15 0
300 400 600 600 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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DVCH2800D Series
BLOCK DIAGRAM
PIN 1 28V IN L1 C1 IN COM PIN 2 C3 Q1 D2 UNDER VOLTAGE SHUTDOWN PWM CONTROL Rs1 C2 OUT COM PIN 4 -VOUT PIN 6 T1 D1 PIN 3 +V OUT
PRIMARY HOUSEKEEPING SUPPLY INH PIN 7
VOLTAGE AMPLIFIER
Figure 2
CONNECTION DIAGRAM
1 28V IN 28 Vdc 7 INH 2 IN COM -V OUT OUT COM +V OUT
3 LO AD 4 LO AD 6
+ -
Figure 3
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DVCH2800D Series
INHIBIT DRIVE CONNECTION DIAGRAMS
28V IN
1 12K
28V IN
1 12K
INH
7
BIAS
OPTOISOLATOR
INH
7
BIAS
OPTIONAL CAPACITOR IN COM 2
12V
OPTIONAL CAPACITOR IN COM 2
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
DVMSA28 EMI FILTER 1 28V IN 28 Vdc 28V OUT 7 INH 7 IN COM OUT COM 4,8 CASE 5,6 2 IN COM 5 -V OUT OUT COM LOAD 6 2,3 DVCH2800D DC-DC CONVERTER 1 28V IN +V OUT LOAD 4 3
+ -
Figure 6 - Converter with EMI Filter
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DVCH2800D Series
EFFICIENCY PERFORMANCE CURVES (TCASE = 25C, Full Load, Unless Otherwise Specified)
VIN = 16V VIN = 28V VIN = 40V
90 80 Efficiency (%) Efficiency (%) 0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 70 60 50 40 30 Output Pow er (W)
90 80 70 60 50 40 30 0.1 0.3 0.5 0.7 0.9 1.1 1.3 Output Pow er (W) 1.5
Figure 7 - DVCH2805D Efficiency (%) vs. Output Power (W)
Figure 8 - DVCH2812D Efficiency (%) vs. Output Power (W)
90 80 Efficiency (%) 70 60 50 40 30 0.1 0.3 0.5 0.7 0.9 1.1 1.3 Output Pow er (W) 1.5
Figure 9 - DVCH2815D Efficiency (%) vs. Output Power (W)
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DVCH2800D Series
EMI PERFORMANCE CURVES
(TCASE = 25C, VIN = +28V 5%, Full Load, Unless Otherwise Specified)
Figure 10 - DVCH2800D without EMI Filter
Figure 11 - DVCH2800D with EMI Filter
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DVCH2800D Series
PACKAGE SPECIFICATIONS
TOP VIEW
SIDE VIEW PIN 1 2 3 4 5 6 7 FUNCTION 28V IN IN COM +V OUT OUT COM CASE -V OUT INHIBIT
BOTTOM VIEW
Figure 12 - Package and Pinout (Dimensional Limits are 0.005" Unless Otherwise Stated)
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DVCH2800D Series
PACKAGE PIN DESCRIPTION
Pin
1 2 3 4 5 6 7
Function
28V IN IN COM +V OUT OUT COM CASE -V OUT INHIBIT
Description
Positive Input Voltage Connection Input Common Connection Positive Output Voltage Connection Output Common Connection Case Connection Negative Output 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.
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DVCH2800D 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
*
*
* *
Burn-In
* *
*
*
*
Final Electrical
* * *
*
*
*
Hermeticity
*
* *
* *
* *
Radiography External Visual
* * * * * *
Notes:
1. 2. 3.
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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DVCH2800D Series
ORDERING INFORMATION
DVCH 1
28 2
05 3
D 4
/HB 5
-
XXX 6
(1) Product Series
DVCH
(2) Nominal Input Voltage
28 28 Volts
(3) Output Voltage
05 12 15 5 Volts 12 Volts 15 Volts
(4) Number of Outputs
D Dual
(5) Screening Code1,2
None /ES /HB /H /K Standard Extended HB Class H Class K
(6) Additional Screening Code
Contact Sales
Notes:
1. 2.
Contact the VPT Inc. Sales Department for availability of Class H (/H) or Class K (/K) qualified products. 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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DVCH2800D Series
SMD (STANDARD MICROCIRCUIT DRAWING) NUMBERS
Standard Microcircuit Drawing (SMD) *T.B.D. *T.B.D. *T.B.D.
DVCH2800D Series Similar Part Number DVCH2805D/H DVCH2812D/H DVCH2815D/H
Do not use the DVCH2800D 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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