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DVFL2800D Series
HIGH RELIABILITY HYBRID DC-DC CONVERTERS
DESCRIPTION
The DVFL 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 DVFL series is a magnetic feedback circuit that is radiation immune. Operating at a nominal fixed frequency of 500 kHz, these regulated, isolated units utilize well-controlled undervoltage lockout circuitry to eliminate slow start-up problems. The current sharing function allows a maximum of five units to be connected in parallel to boost the total output power to 5 times. The output voltage is trimmable up to +10% or down -20%. 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 Parallel Up to 5 Units With Current Sharing Output Voltage Trim Up +10% or Down -20% Wide Input Voltage Range: 16 to 40 Volts per MIL-STD-704 Up to 120 Watts Output Power Radiation Immune Magnetic Feedback Circuit NO Use of Optoisolators Undervoltage Lockout Indefinite Short Circuit Protection Current Limit Protection Industry Standard Pinout Input Transient Voltage: 50 Volts for 1 second Radiation Hardened Version Available Precision Seam Welded Hermetic Package High Power Density: > 80 W/in3 Custom Versions Available Additional Environmental Screening Available Meets MIL-STD-461C and MIL-STD-461D EMC Requirements When Used With a DVME28 EMI Filter MIL-PRF-38534 Element Evaluated Components
Figure 1 - DVFL2800D 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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DVFL2800D 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 Power1 Power Dissipation (Full Load, TCASE = +125C)
Parameter
40 VDC 50 Volts 120 Watts 40 Watts
Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) (No Pin Extensions)
DVFL2805D Min Typ Max Min DVFL2812D Typ
+15C -65C to +150C 270C 86 Grams
Units
Conditions
Max
STATIC
INPUT 4 Voltage Continuous Transient, 1 sec Inhibited 1 Current Ripple Current INH1 Pin Input INH2 Pin Input
4 4 4 4
16 0 0 10.5 5.0 14.0 11.0
28 5.00 5.00 5.00 5.00 500 400
40 50 3 70 140 80 1.5 1.0 13.5 8.0 16.0 14.5 5.05 5.075 5.20 5.25 100 70 14 80 20 200 100 200 450 10 3.0 80 80 500 600 600 -
16 0 0 10.5 5.0 14.0 11.0 11.88 11.82 11.80 11.52 -20 2.0 80 425 500 100 -
28 12.00 12.00 12.00 12.00 500 400
40 50 3 70 140 80 1.5 1.0 13.5 8.0 16.0 14.5 12.12 12.18 12.20 12.48 110 77 6.4 80 20 200 120 200 450 10 3.0 80 80 500 600 600 -
V V mA mA mA mAp-p V V V V V V V V V V W W A mVp-p mV mV mV mV mV % V % W W F kHz kHz M kHrs
Inhibited 2 No Load Full Load , 20Hz to 10MHz
5
INH1 Pin Open Circuit Voltage INH2 Pin Open Circuit Voltage UVLO Turn On UVLO Turn Off OUTPUT 5 Voltage
4
+VOUT +VOUT -VOUT -VOUT Power
3,6
TCASE = 25C TCASE = -55C to +125C TCASE = 25C TCASE = -55C to +125C Either Output Either Output Full Load , 20Hz to 10MHz VIN = 16V to 40V VIN = 16V to 40V No Load to Full Load No Load to Full Load
5 5 5
4.95 4.925 4.80 4.75 -20 2.0
Total VOUT VOUT VOUT +VOUT -VOUT +VOUT -VOUT -VOUT
4
Current
3,6
Ripple Voltage Line Regulation Load Regulation Cross Regulation Voltage Trim Share Pin Voltage EFFICIENCY
V1+ Load 30% - Load 70% V2+ Load 70% - Load 30% Full Load Full Load Overload
5
73 425
4
LOAD FAULT POWER DISSIPATION CAPACITIVE LOAD
4
Short Circuit
SWITCHING FREQUENCY SYNC FREQUENCY RANGE ISOLATION MTBF (MIL-HDBK-217F) VH - VL = 5V Duty Cycle = 20% - 80% 500 VDC, TCASE = 25C AIF @ TC = 55C
500 100 -
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DVFL2800D 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 Power1 Power Dissipation (Full Load, TCASE = +125C) 40 VDC 50 Volts 120 Watts 40 Watts Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) (No Pin Extensions)
DVFL2805D Min Typ Max Min DVFL2812D Typ Max
+15C -65C to +150C 270C 86 Grams
Parameter
Conditions
Units
DYNAMIC
Load Step Output Transient Load Step Recovery Line Step Recovery Turn On Delay Turn On Overshoot
2 4
VOUT VOUT VOUT
Half Load to Full Load VIN = 16V to 40V VIN = 0V to 28V
-
300 300 -
400 500 600 500 20 25
-
600 300 -
500 500 1200 500 20 50
mVPK Sec mVPK Sec mSec mVPK
Line Step Output Transient
2, 4
Notes:
1. 2. 3. 4. 5. 6.
Dependant on output voltage. Time for output voltage to settle within 1% of its nominal value. Derate linearly to 0 at 135C. Verified by qualification testing. Half load at +VOUT and half load at -VOUT. Up to 70% of the total power or current can be drawn from any one of the two outputs.
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DVFL2800D 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 Power1 Power Dissipation (Full Load, TCASE = +125C)
Parameter
40 VDC 50 Volts 120 Watts 40 Watts
Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) (No Pin Extensions)
DVFL2815D Min Typ Max Units
+15C -65C to +150C 270C 86 Grams
Conditions
STATIC
INPUT 4 Voltage Continuous Transient, 1 sec Inhibited 1 Current Ripple Current INH1 Pin Input INH2 Pin Input
4 4 4 4
16 0 0 10.5 5.0 14.5 11.0
28 15.00 15.00 15.00 15.00 500 400
40 50 3 70 140 80 1.5 1.0 13.5 8.0 16.0 14.5 15.15 15.225 15.20 15.60 120 84 5.6 80 20 200 120 200 450 10 3.0 80 80 500 600 600 -
V V mA mA mA mAp-p V V V V V V V V V V W W A mVp-p mV mV mV mV mV % V % W W F kHz kHz M kHrs
Inhibited 2 No Load Full Load , 20Hz to 10MHz
5
INH1 Pin Open Circuit Voltage INH2 Pin Open Circuit Voltage UVLO Turn On UVLO Turn Off OUTPUT 5 Voltage
4
+VOUT +VOUT -VOUT -VOUT Power
3,6
TCASE = 25C TCASE = -55C to +125C TCASE = 25C TCASE = -55C to +125C Either Output Either Output Full Load , 20Hz to 10MHz VIN = 16V to 40V VIN = 16V to 40V No Load to Full Load No Load to Full Load
5 5 5
14.85 14.775 14.80 14.40 -20 2.0
Total VOUT VOUT VOUT +VOUT -VOUT +VOUT -VOUT -VOUT
4
Current
3,6
Ripple Voltage Line Regulation Load Regulation Cross Regulation Voltage Trim Share Pin Voltage EFFICIENCY
V1+ Load 30% - Load 70% V2+ Load 70% - Load 30% Full Load Full Load Overload
5
81 425
4
LOAD FAULT POWER DISSIPATION CAPACITIVE LOAD
4
Short Circuit
SWITCHING FREQUENCY SYNC FREQUENCY RANGE ISOLATION MTBF (MIL-HDBK-217F) VH - VL = 5V Duty Cycle = 20% - 80% 500 VDC, TCASE = 25C AIF @ TC = 55C
500 100 -
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DVFL2800D 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 Power1 Power Dissipation (Full Load, TCASE = +125C) 40 VDC 50 Volts 120 Watts 40 Watts Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) (No Pin Extensions)
DVFL2815D Min Typ Max
+15C -65C to +150C 270C 86 Grams
Parameter
Conditions
Units
DYNAMIC
Load Step Output Transient Load Step Recovery Line Step Recovery Turn On Delay Turn On Overshoot
2 4
VOUT VOUT VOUT
Half Load to Full Load VIN = 16V to 40V VIN = 0V to 28V
-
600 300 -
500 500 1200 500 20 50
mVPK Sec mVPK Sec mSec mVPK
Line Step Output Transient
2, 4
Notes:
1. 2. 3. 4. 5. 6.
Dependant on output voltage. Time for output voltage to settle within 1% of its nominal value. Derate linearly to 0 at 135C. Verified by qualification testing. Half load at +VOUT and half load at -VOUT. Up to 70% of the total power or current can be drawn from any one of the two outputs.
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DVFL2800D Series
BLOCK DIAGRAM
PIN 7 +V OUT PIN 8 OUT COM
PIN 1 28V IN
-V OUT IN COM PIN 2 Q1 MAGNETIC FEEDBACK VOLTAGE AND CURRENT AMPLIFIERS PIN 10 PIN 9 TRIM
UNDER VOLTAGE SHUTDOWN
SHARE PIN 11 INH2 PWM CONTROL PIN 12
PRIMARY HOUSEKEEPING SUPPLY INH1 SYNC IN SYNC OUT PIN 4 PIN 6 PIN 5
SECONDARY HOUSEKEEPING SUPPLY
Figure 2
CONNECTION DIAGRAM
1 28V IN 6 SYNC IN 28 Vdc +V OUT -V OUT 9 INH2 INH1 2 IN COM OUT COM 8
Figure 3
7
+ -
4
LOAD 12
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DVFL2800D Series
INHIBIT DRIVE CONNECTION DIAGRAM
28V IN 1 30K OPTOISOLATOR INH1 4 BIAS 1 2K BIAS 2 12 INH2 12V 8V
OPTIONAL CAPACITOR IN COM 2
+ 8 OUT COM
Figure 4 - Isolated Inhibit Drive and Internal Equivalent Circuit (Shown with optional capacitor for turn-on delay)
EMI FILTER HOOKUP DIAGRAM
DVME28 EMI FILTER 1 28V IN 2 28V IN 3 28 Vdc 28V OUT 10 28V IN 4 IN COM 5 IN COM 6 IN COM OUT COM CASE OUT COM 7 OUT COM 8 28V OUT 9 28V OUT 11 12
DVFL2800D DC-DC CONVERTER 1 28V IN 6 SYNC IN 4 INH1 2 IN COM OUT COM 8 INH2 12 +V OUT - V OUT 9 LOAD 7
+ -
Figure 5 - Converter with EMI Filter
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DVFL2800D Series
+28 VOLT OUTPUT CONNECTION DIAGRAM
DVFL2815D DC-DC CONVERTER 1 28V IN 6 SYNC IN 28 Vdc +V OUT 10 TRIM INH2 4 INH1 OUT COM 2 IN COM -V OUT 9 8 12 100k + 28 Vdc 7
+ -
Figure 6: +28 Volt Output Converter Using DVFL2815D Converter
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DVFL2800D Series
PARALLEL CONNECTION DIAGRAM
DVME28 EMI FILTER 1 28V IN 2 28V IN 3 28 Vdc 28V OUT 10 28V IN 4 IN COM 5 IN COM 6 IN COM OUT COM OUT COM 7 2 IN COM -V OUT OUT COM 8 5 SYNC OUT 9 28V OUT 9 4 INH1 OUT COM 28V OUT 11 6 SYNC IN SHARE 8 12 1 28V IN +V OUT 11 DVFL2800D DC-DC CONVERTER 7
+ -
CASE 1 28V IN 6
CASE DVFL2800D DC-DC CONVERTER 7 +V OUT 11 SYNC IN 4 INH1 5 SYNC OUT 2 IN COM -V OUT 9 SHARE 8 OUT COM
CASE DVFL2800D DC-DC CONVERTER 1 28V IN 6 SYNC IN 4 INH1 2 IN COM -V OUT 9 SHARE 8 OUT COM +V OUT 11 7
CASE
Figure 7 - Current Sharing Parallel Connection for Multiple Converters
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DVFL2800D Series
OUTPUT VOLTAGE TRIM
The output voltage can be trimmed down by connecting a resistor between the TRIM pin (PIN 10) and the +V OUT pin (PIN 7), or can be trimmed up by connecting a resistor between the TRIM pin (PIN 10) and the OUT COM pin (PIN 8). The maximum trim range is +10% up and -20% down. The appropriate resistor values versus the output voltage are given in the trim table below.
Figure 8 - Output Voltage Trim
DVFL2805D
VOUT (V) 5.5 5.4 5.3 5.2 5.1 5.0 4.9 4.8 4.7 4.6 4.5 4.4 4.3 4.2 4.1 4.0 RTRIM () 35k 47.5k 68.3k 110k 235k 225k 100k 58.3k 37.5k 25k 16.7k 10.7k 6.3k 2.8k 0
DVFL2812D
VOUT (V) 13.2 13.0 12.8 12.6 12.4 12.2 12.0 11.8 11.6 11.4 11.2 11.0 10.8 10.6 10.4 10.2 10.0 9.8 9.6 RTRIM () 5.8k 10k 16.2k 26.6k 47.3k 109k 454k 213k 134k 94k 70.1k 54.3k 42.9k 34.4k 27.8k 22.5k 18.2k 14.6k
DVFL2815D
VOUT (V) 16.50 16.25 16.00 15.75 15.50 15.25 15.00 14.75 14.50 14.25 14.00 13.75 13.50 13.25 13.00 12.75 12.50 12.25 12.00 RTRIM () 1.7k 5k 10k 18.3k 35k 85k 475k 225k 142k 100k 75k 58.3k 46.4k 37.5k 30.6k 25k 20.5k 16.7k
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DVFL2800D Series
EFFICIENCY PERFORMANCE CURVES (TCASE = 25C, Full Load, Unless Otherwise Specified)
VIN = 16V VIN = 28V VIN = 40V
90
90
85 Efficiency (%)
85 Efficiency (%) 80 75
20 40 60 Output Pow er (W) 80 100
80
75
70
30
50
70 Output Pow er (W)
90
110
Figure 9 - DVFL2805D Efficiency (%) vs. Output Power (W)
Figure 10 - DVFL2812D Efficiency (%) vs. Output Power (W)
90
85 Efficiency (%)
80
75 30 50 70 Output Power (W) 90 110
Figure 11 - DVFL2815D Efficiency (%) vs. Output Power (W)
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DVFL2800D Series
EMI PERFORMANCE CURVES
(TCASE = 25C, VIN = +28V 5%, Full Load, Unless Otherwise Specified)
Figure 12 - DVFL2800D without EMI Filter
Figure 13 - DVFL2800D with EMI Filter
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DVFL2800D Series
PACKAGE SPECIFICATIONS
TOP VIEW PIN 1 2 3 4 5 6 7 8 9 10 11 12 FUNCTION 28V IN IN COM CASE INH1 SYNC OUT SYNC IN +V OUT OUT COM -V OUT TRIM SHARE INH2
SIDE VIEW
Figure 14 - Package and Pinout (Pin Length is 0.01", Other Dimensional Limits are 0.005" Unless Otherwise Stated)
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DVFL2800D Series
PACKAGE SPECIFICATIONS (DOWN-LEADED)
TOP VIEW PIN 1 2 3 4 5 6 7 8 9 10 11 12 FUNCTION 28V IN IN COM CASE INH1 SYNC OUT SYNC IN +V OUT OUT COM -V OUT TRIM SHARE INH2
SIDE VIEW
Figure 15 - Package and Pinout (With Down-Leaded Pin Extensions Added) (Pin Length is 0.01", Other Dimensional Limits are 0.005" Unless Otherwise Stated)
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DVFL2800D Series
PACKAGE SPECIFICATIONS (UP-LEADED)
TOP VIEW PIN 1 2 3 4 5 6 7 8 9 10 11 12 FUNCTION 28V IN IN COM CASE INH1 SYNC OUT SYNC IN +V OUT OUT COM -V OUT TRIM SHARE INH2
SIDE VIEW
Figure 16 - Package and Pinout (With Up-Leaded Pin Extensions Added) (Pin Length is 0.01", Other Dimensional Limits are 0.005" Unless Otherwise Stated)
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DVFL2800D Series
PACKAGE PIN DESCRIPTION
Pin
1 2 3 4 5 6 7 8 9 10 11 12
Function
28V IN IN COM CASE INH1 SYNC OUT SYNC IN +V OUT OUT COM -V OUT TRIM SHARE INH2
Description
Positive Input Voltage Connection Input Common Connection Case Connection Logic Low = Disabled Output. Connecting the inhibit(1) pin to input common causes converter shutdown. Logic High = Enabled Output. Unconnected or open collector TTL. Output Synchronization Signal Input Synchronization Signal Positive Output Voltage Connection Output Common Connection Negative Output Voltage Connection Trim Output Voltage to +10%, -20% of Nominal Value Current Share Logic Low = Disabled Output. Connecting the inhibit(2) pin to output common causes converter shutdown. Logic High = Enabled Output. Unconnected or open collector TTL.
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DVFL2800D Series
ENVIRONMENTAL SCREENING (100% Tested Per MIL-STD-883 as referenced to MIL-PRF-38534)
Extended /ES * * HB /HB * * * * Class H /H * * * * Class K /K * * * * * * *
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
* * * * * *
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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DVFL2800D Series
ORDERING INFORMATION
DVFL 1
28 2
05 3
D 4
R 5
DL 6
/HB 7
-
XXX 8
(1) Product Series
DVFL
(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) Rad-Hard Option2
None R Standard 100 kRad
(6) Package Option
None DL UL Standard Down-Lead Up-Lead
(7) Screening Code1,3
None /ES /HB /H /K Standard Extended HB Class H Class K
(8) 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 qualified 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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DVFL2800D Series
SMD (STANDARD MICROCIRCUIT DRAWING) NUMBERS
Standard Microcircuit Drawing (SMD) *T.B.D. *T.B.D. *T.B.D. DVFL2800D Series Similar Part Number DVFL2805D/H DVFL2812D/H DVFL2815D/H
Do not use the DVFL2800D 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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