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, compliant to AS9000, and certified to MIL-PRF-38534 and MIL-STD-883. · · · · · · · · · · · · · · 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 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 Flanged and Non-flanged Versions Available MIL-PRF-38534 Element Evaluated Components Figure 1 – DVEHF2800T / DVEHF2800TF DC-DC Converter (Not To Scale) 10030DSA 17921 Bothell-Everett Highway, Suite 108 Bothell, WA 98012 http://www.vpt-inc.com Sales Information: Phone: (425) 487-4850 Fax: (425) 487-4802 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 Conditions Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight DVEHF28512T +15°C -65°C to +150°C 270°C 50 grams DVEHF28515T Min Typ Max Min Typ Max 15 28 50 15 28 50 Units STATIC Continuous INPUT Voltage Transient, 1 sec 4 Inhibited Current No Load V - - 80 - - 80 V - 3.5 6.0 - 3.5 6.0 mA - - 70 - - 70 mA 0 - 1.5 0 - 1.5 V Inhibit Pin Open Circuit Voltage 9.0 11.0 13.0 9.0 11.0 13.0 V UVLO Turn On 8.0 - 12.0 8.0 - 12.0 V UVLO Turn Off4 4.0 - 8.0 4.0 - 8.0 V Inhibit Pin Input4 4 VMAIN OUTPUT Voltage ±VAUX VMAIN Ripple Voltage Line Regulation Load Regulation Cross Regulation 5.05 4.95 5.0 5.05 V 12.12 14.85 15.0 15.15 V 4.925 5.0 5.075 4.925 5.0 5.075 V 12.0 12.18 14.775 15.0 15.225 V 0 - 10 0 - 10 W VMAIN 0.15 - 5.0 0.15 - 5.0 W W Either Output VMAIN ±VAUX VMAIN ±VAUX VMAIN ±VAUX VMAIN ±VAUX ±VAUX EFFICIENCY LOAD FAULT POWER DISSIPATION Either Output6 Full Load5, 20Hz to 10MHz VIN = 16V to 40V 0 - 3.5 0 - 3.5 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 mV - 15 50 - 15 50 - 5 20 - 5 20 mV - 10 50 - 10 50 mV - - 50 - - 50 mV Full Load5 67 72 - 67 72 - % Overload4 - - 7.5 - - 7.5 W Short Circuit - - 7.5 - - 7.5 W - - 500 - - 500 mF 350 450 550 350 450 550 kHz 100 - - 100 - - MΩ No Load to Full Load5 +VOUT = 30%, -VOUT = 70% +VOUT = 70%, -VOUT = 30% CAPACITIVE LOAD4 SWITCHING FREQUENCY ISOLATION 5.0 12.0 11.82 ±VAUX6 Current3 TCASE = -55°C to +125°C 4.95 11.88 Total ±VAUX Power4 TCASE = 25°C 500 VDC, TCASE = 25°C THERMAL RESISTANCE Case to Ambient (qCA) - 19 - - 19 - °C/W MTBF (MIL-HDBK-217F) AIF @ TC = 55°C - 350 - - 350 - kHrs 10030DSA 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 Conditions Junction Temperature Rise to Case Storage Temperature Lead Solder Temperature (10 seconds) Weight DVEHF28512T +15°C -65°C to +150°C 270°C 50 grams DVEHF28515T Units Min Typ Max Min Typ Max - 200 500 - 200 500 mVPK - 100 400 - 100 400 mVPK - 200 500 - 200 500 mSec DYNAMIC Load Step Output Transient Load Step Recovery2 Line Step Output Transient4 Line Step Recovery2, 4 Turn On Delay Turn On Overshoot2 Notes: 1. 2. 3. 4. 5. 6. VMAIN ±VAUX VMAIN Half Load to Full Load ±VAUX - 200 500 - 200 500 mSec VMAIN - 200 600 - 200 600 mVPK - 50 100 - 50 100 mVPK - 200 500 - 200 500 mSec - 200 500 - 200 500 mSec - 20 30 - 20 30 mSec - - 50 - - 50 mVPK ±VAUX VMAIN VIN = 16V to 40V ±VAUX VIN = 0V to 28V 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. 10030DSA 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 10030DSA 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 5 IN COM -V AUX 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) 10030DSA 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 Pow er (W) Figure 7 – DVEHF28512T Efficiency (%) vs. Output Power (W) 75 Efficiency (%) 70 65 60 55 50 2.5 5 7.5 10 Output Pow er (W) Figure 8 – DVEHF28515T Efficiency (%) vs. Output Power (W) 10030DSA 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 10030DSA 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 Package and Pinout (Dimensional Limits are ±0.005” Unless Otherwise Stated) 10030DSA 8 DVEHF2800T Series PACKAGE SPECIFICATIONS (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 12 – Flanged, Solder Seal Package and Pinout (Dimensional Limits are ±0.005” Unless Otherwise Stated) 10030DSA 9 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 ENVIRONMENTAL SCREENING (Per MIL-STD-883 as referenced to MIL-PRF-38534, Class H) Screening MIL-STD-883 Standard (No Suffix) Extended /ES · Pre-Cap Inspection Method 2017, 2032 Internal Procedure Temperature Cycling Method 1010, -55°C to 125°C · Constant Acceleration Method 2001, 500g · Burn-In 96 hours at +125°C 24 hours at +125°C Hermeticity Method 1014, Fine Leak, Condition A Method 1014, Gross Leak, Condition C -3 Dip (1 x 10 ) · Final Electrical 100% at 25°C · · Final Inspection Method 2009 · · 10030DSA · · · · · 10 DVEHF2800T Series ORDERING INFORMATION DVEHF 28 5 12 T F /ES 1 2 3 4 5 6 7 - XXX 8 (1) (2) (3) (4) Product Series Nominal Input Voltage Main Output Voltage Auxiliary Output Voltages DVEHF 28 28 Volts 5 + 5 Volts 12 15 ± 12 Volts ± 15 Volts (5) (6) (7) (8) Number of Outputs Package Option Screening Code Additional Screening Code T Triple None F Non-Flanged Flanged None /ES Standard Extended Contact Sales 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 an order please contact your sales representative or the VPT Inc. Sales Department at: Phone: Fax: E-mail: (425) 487-4850 (425) 487-4802 [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. 10030DSA 11