DVEHF2800T Series HIGH RELIABILITY HYBRID DC-DC CONVERTERS WITH INTEGRAL EMI FILTER DESCRIPTION FEATURES The DVEHF 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 DVEHF series is a fault tolerant magnetic feedback circuit. Operating at a nominal fixed frequency of 450 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 • • • • • • • • • • • • • • • • High Reliability Very Low Output Noise Wide Input Voltage Range: 15 to 50 Volts per MIL-STD-704 Up to 10 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 Solder Seal Hermetic Package 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, SC01 and CS02 Non-flanged Version Available MIL-PRF-38534 Element Evaluated Components Figure 1 – DVEHF2800T DC-DC Converter (Not To Scale) 1X030DSD 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: [email protected] 1 DVEHF2800T Series SPECIFICATIONS (TCASE = -55°C to +125°C, 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 = +125°C) Parameter 50 VDC 80 Volts 10 Watts 5.0 Watts Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) DVEHF28512T Conditions +15°C -65°C to +150°C 270°C 50 Grams DVEHF28515T Units Min Typ Max Min Typ Max 15 28 50 15 28 50 STATIC Continuous INPUT Voltage Transient, 1 sec Current Inhibit Pin Input 4 - - 80 - - 80 V Inhibited - 3.5 6.0 - 3.5 6.0 mA No Load - - 70 - - 70 mA 4 Inhibit Pin Open Circuit Voltage 4 UVLO Turn On 4 UVLO Turn Off VMAIN ±VAUX OUTPUT Voltage VMAIN 4 TCASE = -55°C to +125°C V 8.0 - 12.0 8.0 - 12.0 V 4.0 - 8.0 4.0 - 8.0 V 4.95 5.0 5.05 4.95 5.0 5.05 V 11.88 12.0 12.12 14.85 15.0 15.15 V 4.925 5.0 5.075 4.925 5.0 5.075 V 14.25 15.0 15.75 V 0 - 10 W VMAIN 0.15 - 5.0 0.15 - 5.0 W 0 - 3.5 0 - 3.5 W 0 - 1.0 0 - 1.0 A 0 - 0.29 0 - 0.23 A - 15 50 - 15 50 mVp-p - 15 50 - 15 50 mVp-p - 10 20 - 10 20 mV - 15 50 - 15 50 mV - 5 20 - 5 20 mV - 10 50 - 10 50 mV - - 50 - - 50 mV 5 67 72 - 67 72 - % 4 - - 7.5 - - 7.5 W - - 7.5 - - 7.5 W - - 500 - - 500 µF 6 ±VAUX VMAIN ±VAUX ±VAUX EFFICIENCY Either Output Either Output 6 5 Full Load , 20Hz to 10MHz VIN = 15V to 50V 5 No Load to Full Load +VOUT = 30%, -VOUT = 70% +VOUT = 70%, -VOUT = 30% Full Load LOAD FAULT POWER DISSIPATION Overload Short Circuit 4 CAPACITIVE LOAD SWITCHING FREQUENCY ISOLATION 500 VDC, TCASE = 25°C MTBF (MIL-HDBK-217F) AIF @ TC = 55°C 1X030DSD V 10 VMAIN Cross Regulation 1.5 13.0 12.6 VMAIN Load Regulation 11.0 - ±VAUX Line Regulation 0 9.0 12.0 ±VAUX Ripple Voltage 1.5 13.0 0 VMAIN 3 11.0 11.4 ±VAUX Current TCASE = 25°C 0 9.0 Total ±VAUX Power V 350 450 550 350 450 550 kHz 100 - - 100 - - MΩ - 350 - - 350 - kHrs 2 DVEHF2800T Series SPECIFICATIONS (TCASE = -55°C to +125°C, 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 = +125°C) Parameter 50 VDC 80 Volts 10 Watts 5.0 Watts Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight (Maximum) DVEHF28512T Conditions +15°C -65°C to +150°C 270°C 50 Grams DVEHF28515T Units Min Typ Max Min Typ Max - 200 500 - 200 500 mVPK DYNAMIC Load Step Output Transient 2 2, 4 Line Step Recovery ±VAUX - 100 400 - 100 400 mVPK - 200 500 - 200 500 µSec ±VAUX - 200 500 - 200 500 µSec VMAIN - 200 600 - 200 600 mVPK - 50 100 - 50 100 mVPK VMAIN Load Step Recovery Line Step Output Transient VMAIN 4 ±VAUX VMAIN Half Load to Full Load VIN = 16V to 40V ±VAUX Turn On Delay Turn On Overshoot Notes: 1. 2. 3. 4. 5. 6. VMAIN ±VAUX VIN = 0V to 28V - 200 500 - 200 500 µSec - 200 500 - 200 500 µSec - 20 30 - 20 30 mSec - - 25 - - 25 mVPK - - 50 - - 50 mVPK This note intentionally not used. Time for output voltage to settle within 1% of its nominal value. Derate linearly to 0 at 135°C. Verified by qualification testing. 5.0W on VMAIN and 2.5W on ±VAUX. Up to 70% of the total auxiliary power or current can be drawn from either of the auxiliary outputs. 1X030DSD 3 DVEHF2800T Series BLOCK DIAGRAM 28V IN +V MAIN PIN 1 PIN 7 MAIN COM PIN 6 EMI FILTER LINEAR REG +V AUX PIN 3 IN COM PIN 10 AUX COM LINEAR REG PRIMARY HOUSEKEEPING SUPPLY PWM CONTROLLER PIN 4 -V AUX PIN 5 TRANSFORMER ISOLATED VOLTAGE ERROR AMPLIFIERS SIGNAL FEEDBACK POWER FEEDFORWARD SECONDARY HOUSKEEPING SUPPLY INH PIN 2 Figure 2 1X030DSD 4 DVEHF2800T Series CONNECTION DIAGRAM 1 7 28V IN +V MAIN LOAD MAIN COM 6 2 + - 28 Vdc 3 INH +V AUX LOAD AUX COM 4 LOAD 10 IN COM -V AUX 5 Figure 3 INHIBIT DRIVE CONNECTION DIAGRAMS 28V IN 1 28V IN 1 10K 10K INH 2 OPTIONAL CAPACITOR BIAS OPTOISOLATOR 12V IN COM 10 INH 2 OPTIONAL CAPACITOR BIAS 12V IN COM 10 Figure 4 – Internal Inhibit Circuit and Recommended Drive Figure 5 – Isolated Inhibit Drive (Shown with optional capacitor for turn-on delay) (Shown with optional capacitor for turn-on delay) 1X030DSD 5 DVEHF2800T Series EFFICIENCY PERFORMANCE CURVES (TCASE = 25°C) VIN = 15V VIN = 28V VIN = 50V 75 Efficiency (%) 70 65 60 55 50 2.5 5 7.5 10 Output Power (W) Figure 7 – DVEHF28512T Efficiency (%) vs. Output Power (W) 75 Efficiency (%) 70 65 60 55 50 2.5 5 7.5 10 Output Power (W) Figure 8 – DVEHF28515T Efficiency (%) vs. Output Power (W) 1X030DSD 6 DVEHF2800T Series EMI PERFORMANCE CURVES (TCASE = 25°C, VIN = +28V ± 5%, Full Load, Unless Otherwise Specified) Figure 9 – MIL-STD-461C DVEHF2800T Figure 10 – MIL-STD-461D DVEHF2800T 1X030DSD 7 DVEHF2800T Series PACKAGE SPECIFICATIONS (NON-FLANGED, SOLDER SEAL) TOP VIEW SIDE VIEW PIN FUNCTION 1 28V IN 2 INHIBIT 3 +V AUX 4 AUX COM 5 -V AUX 6 MAIN COM 7 +V MAIN 8 CASE 9 N/C 10 IN COM BOTTOM VIEW Figure 11 – Non-Flanged, Solder Seal Tin Plated Package and Pinout (Dimensional Limits are ±0.005” Unless Otherwise Stated) 1X030DSD 8 DVEHF2800T Series PACKAGE PIN DESCRIPTION Pin Function Description 1 28V IN Positive Input Voltage Connection 2 INHIBIT Logic Low = Disabled Output. Connecting the inhibit pin to input common causes converter shutdown. Logic High = Enabled Output. Unconnected or open collector TTL. 3 +V AUX Positive Auxiliary Output Voltage Connection 4 AUX COM Auxiliary Output Common Connection 5 -V AUX Negative Auxiliary Output Voltage Connection 6 MAIN COM Main Output Common Connection 7 +V MAIN Positive Main Output Voltage Connection 8 CASE Case Connection 9 N/C No Connection 10 IN COM Input Common Connection 1X030DSD 9 DVEHF2800T Series ENVIRONMENTAL SCREENING (100% Tested Per MIL-STD-883 as referenced to MIL-PRF-38534) Screening 1X030DSD MIL-STD-883 (No Suffix) Extended /ES • Standard NonDestructive Bond Pull Method 2023 • Internal Visual Method 2017, 2032 Internal Procedure • Temperature Cycling Method 1010, -55°C to 125°C • Constant Acceleration Method 2001, 500g, Y1 Direction • Burn-In 96 hours at +125°C 24 hours at +125°C • Final Electrical 100% at 25°C • Hermeticity Method 1014, Fine Leak, Condition A Method 1014, Gross Leak, Condition C -3 Dip (1 x 10 ) • External Visual Method 2009 • • • • • • • 10 DVEHF2800T Series ORDERING INFORMATION DVEHF 28 5 12 T /ES 1 2 3 4 5 6 - XXX 7 (1) (2) (3) (4) Product Series Nominal Input Voltage Main Output Voltage Auxiliary Output Voltages DVEHF 28 Volts 28 + 5 Volts 5 (5) (6) (7) Number of Outputs Screening Code1 Additional Screening Code Triple T Notes: 1. None /ES Standard Extended 12 15 ± 12 Volts ± 15 Volts Contact Sales 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 requirement, source inspection, and/or special element evaluation for space or other higher quality applications. 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 [email protected] 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. 1X030DSD 11