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DVHF+2800T Series
HIGH RELIABILITY HYBRID DC-DC CONVERTERS
DESCRIPTION
The DVHF+ 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 DVHF+ series is a fault tolerant magnetic feedback circuit. Operating at a nominal fixed frequency of 325 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 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 Projection Welded Hermetic Package High Power Density: > 37 W/in3 Custom Versions Available Additional Environmental Screening Available Meets MIL-STD-461C and MIL-STD-461D EMC Requirements When Used With a DVMH28 EMI Filter Flanged and Non-flanged Versions Available. MIL-PRF-38534 Element Evaluated Components
Figure 1 - DVHF+2800T / DVHF+2800TF 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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DVHF+2800T Series
SPECIFICATIONS (TCASE = -55C to +125C, VIN = +28V 5%, Full Load5, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS Input Voltage (Continuous) Input Voltage (Transient, 1 second) Output Power Power Dissipation (Full Load, TCASE = +125C)
Parameter
50 VDC 80 Volts 15 Watts 6.5 Watts
Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) (Un-Flanged / Flanged)
DVHF+28512T Min Typ 28 3.5 40 15 5.0 12.0 -12.0 5.0 12.0 -12.0 40 60 10 15 5 10 20 77 650 750 350 Max 50 80 5.0 50 50 1.5 17 14.5 13 5.05 12.12 -11.76 5.15 12.36 -11.52 15 7.5 7.5 1.5 0.44 50 80 20 50 50 50 200 450 7.5 7.5 500 700 800 Min 15 0 13 10.5 9 4.95 14.85 -15.30 4.85 14.55 -15.60 0 0 0 0 0 74 550 700 100 -
+15C -65C to +150C 270C (26 / 29) Grams
Units Max 50 80 5.0 50 50 1.5 17 14.5 13 5.05 15.15 -14.70 5.15 15.45 -14.40 15 7.5 7.5 1.5 0.35 50 80 20 50 50 50 200 450 7.5 7.5 500 700 800 V V mA mA mAp-p V V V V V V V V V V W W W A A mVp-p mVp-p mV mV mV mV mV mV % W W F kHz kHz M kHrs
Conditions
DVHF+28515T Typ 28 3.5 40 15 5.0 15.0 -15.0 5.0 15.0 -15.0 40 60 10 15 5 10 20 77 650 750 350
STATIC
INPUT Voltage Current Ripple Current Inhibit Pin Input UVLO Turn On UVLO Turn Off
4 4 4
Continuous Transient, 1 sec Inhibited No Load Full Load , 20Hz to 10MHz
5 4
15 0 13 10.5 9
Inhibit Pin Open Circuit Voltage
VMAIN +VAUX OUTPUT Voltage -VAUX VMAIN +VAUX -VAUX Total Power
4
4.95 TCASE = 25C 11.88 -12.24 4.85 TCASE = -55C to +125C 11.64 -12.48 0 0 0 0 Either Output
5 6
VMAIN VAUX
6
Current
3
VMAIN VAUX VMAIN VAUX VMAIN VAUX VMAIN +VAUX -VAUX
0 5,8
Ripple Voltage Line Regulation
Full Load , 20Hz to 10MHz VIN = 15V to 50V
Load Regulation
No Load to Full Load
-
Cross Regulation EFFICIENCY
VAUX
+VOUT = 30%, -VOUT = 70% +VOUT = 70%, -VOUT = 30% Full Load Overload
5 4
74 550
LOAD FAULT POWER DISSIPATION CAPACITIVE LOAD
4
Short Circuit
SWITCHING FREQUENCY SYNCHRONIZATION FREQUENCY ISOLATION MTBF (MIL-HDBK-217F)
7
700 500 VDC, TCASE = 25C AIF @ TC = 55C 100 -
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DVHF+2800T Series
SPECIFICATIONS (TCASE = -55C to +125C, VIN = +28V 5%, Full Load5, Unless Otherwise Specified)
ABSOLUTE MAXIMUM RATINGS Input Voltage (Continuous) Input Voltage (Transient, 1 second) Output Power Power Dissipation (Full Load, TCASE = +125C) 50 VDC 80 Volts 15 Watts 6.5 Watts Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) (Un-Flanged / Flanged)
DVHF+28512T Min Typ Max Min
+15C -65C to +150C 270C (26 / 29) Grams
Parameter
Conditions
DVHF+28515T Typ Max
Units
DYNAMIC
Load Step Output Transient Load Step Recovery
2
VMAIN VAUX VMAIN VAUX VMAIN VAUX VMAIN VAUX VMAIN VAUX VIN = 0V to 28V VIN = 15V to 50V Half Load to Full Load
-
200 400 450 300 50 150 100 100 -
400 500 650 350 150 250 200 200 17 25 50
-
200 400 450 300 50 150 100 100 -
400 500 650 350 150 250 200 200 17 25 50
mVPK mVPK Sec Sec mVPK mVPK Sec Sec mSec mVPK mVPK
Line Step Output Transient Line Step Recovery Turn On Delay Turn On Overshoot
2, 4
4
Notes:
1. 2. 3. 4. 5. 6. 7. 8.
This note intentionally not used. Time for output voltage to settle within 1% of its nominal value. Derate linearly to 0 at 135C. Verified by qualification testing. 7.5W on VMAIN and 7.5W on VAUX. Up to 70% of the total auxiliary power or current can be drawn from either of the auxiliary outputs. Synchronization is TTL signal with VSYNC MAX = 6V. -VAUX is 5% Load to Full Load at -55C.
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DVHF+2800T Series
BLOCK DIAGRAM
28V IN PIN 9
+V MAIN PIN 2 OUT COM PIN 3
IN COM PIN 8 SYNC PIN 7 PRIMARY HOUSEKEEPING SUPPLY DUAL PWM CONTROLLER
+V AUX PIN 4
-V AUX PIN 5
TRANSFORMER ISOLATED ERROR SIGNAL FEEDBACK
VOLTAGE ERROR AMPLIFIERS
INH PIN 1
TRANSFORMER ISOLATED POWER FEEDFORWARD
SECONDARY HOUSKEEPING SUPPLY
Figure 2
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DVHF+2800T Series
CONNECTION DIAGRAM
9 28V IN 7 SYNC 28 Vdc +V AUX LOAD 1 INH 8 IN COM OUT COM 3
Figure 3
2 +V MAIN LOAD 4
+ -
5 -V AUX LOAD
INHIBIT DRIVE CONNECTION DIAGRAMS
28V IN 9 15K INH 1 BIAS OPTIONAL CAPACITOR IN COM 8 14V OPTOISOLATOR
28V IN 9 15K INH 1 BIAS OPTIONAL CAPACITOR IN COM 8 14V
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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DVHF+2800T Series
EMI FILTER HOOKUP DIAGRAM
DVMH28 EMI FILTER 1 28V IN 28V OUT 2
DVHF+2800T DC-DC CONVERTER 9 28V IN 7 +V MAIN LOAD 4 SYNC 1 INH -V AUX LOAD +V AUX 5 LOAD 2
28 Vdc
+ -
5 IN COM OUT COM 3
4
8 IN COM OUT COM CASE 6 3
Figure 6 - Converter with EMI Filter
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DVHF+2800T Series
EFFICIENCY PERFORMANCE CURVES (TCASE = 25C)
VIN = 15V VIN = 28V VIN = 50V
Figure 7 - DVHF+28512T Efficiency (%) vs. Output Power (W)
Figure 8 - DVHF+28515T Efficiency (%) vs. Output Power (W)
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DVHF+2800T Series
EMI PERFORMANCE CURVES
(TCASE = 25C, VIN = +28V 5%, Full Load, Unless Otherwise Specified)
Figure 9 - DVHF+2800T without EMI Filter
Figure 10 - DVHF+2800T with EMI Filter
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DVHF+2800T Series
PACKAGE SPECIFICATIONS (NON-FLANGED)
TOP VIEW
SIDE VIEW
PIN 1 2 3 4 5 6 7 8 9
FUNCTION INHIBIT +V MAIN OUT COM +V AUX -V AUX CASE SYNC IN COM 28V IN
BOTTOM VIEW
Figure 11 - Non-Flanged Package and Pinout (Dimensional Limits are 0.005" Unless Otherwise Stated)
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DVHF+2800T Series
PACKAGE SPECIFICATIONS (FLANGED)
TOP VIEW
SIDE VIEW
PIN 1 2 3 4 5 6 7 8 9
FUNCTION INHIBIT +V MAIN OUT COM +V AUX -V AUX CASE SYNC IN COM 28V IN
BOTTOM VIEW
Figure 12 - Flanged Package and Pinout (Dimensional Limits are 0.005" Unless Otherwise Stated)
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DVHF+2800T Series
PACKAGE PIN DESCRIPTION
Pin
1 2 3 4 5 6 7 8 9
Function
INHIBIT +V MAIN OUT COM +V AUX -V AUX CASE SYNC IN COM 28V IN
Description
Logic Low = Disabled Output. Connecting the inhibit pin to input common causes converter shutdown. Logic High = Enabled Output. Unconnected or open collector TTL. Positive Main Output Voltage Connection Output Common Connection Positive Auxiliary Output Voltage Connection Negative Auxiliary Output Voltage Connection Case Connection Synchronization Signal Input Common Connection Positive Input Voltage Connection
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DVHF+2800T 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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DVHF+2800T Series
ORDERING INFORMATION
DVHF+ 1
28 2
5 3
12 4
T 5
F 6
/HB 7
-
XXX 8
(1) Product Series
DVHF+
(2) Nominal Input Voltage
28 28 Volts
(3) Main Output Voltage
5 + 5 Volts
(4) Auxiliary Output Voltages
12 15 12 Volts 15 Volts
(5) Number of Outputs
T Triple
(6) Package Option
None F Non-Flanged Flanged
(7) Screening Code1,2
None /ES /HB Standard Extended HB
(8) Additional Screening Code
Contact Sales
/H /K
Class H Class K
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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DVHF+2800T Series
SMD (STANDARD MICROCIRCUIT DRAWING) NUMBERS
Standard Microcircuit Drawing (SMD) *T.B.D. *T.B.D.
DVHF+2800T Series Similar Part Number DVHF+28512T/H DVHF+28512TF/H DVHF+28515T/H DVHF+28515TF/H
Do not use the DVHF+2800T 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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