DVETR2800S Series DESCRIPTION The DVETR series of high-reliability DC-DC converters provide decades of successful critical mission support. Operable over the full military (-55 °C to +125 °C) temperature range with no power derating, the DVETR series unique input, and output filters dramatically reduce input and output noise performance. While operating at a nominal fixed frequency of 450 kHz, these regulated, isolated units utilize a high-speed magnetic feedback design and well-controlled under-voltage lockout circuitry to eliminate slow start-up problems. These converters are designed and manufactured in a facility qualified to ISO9001 and certified to MIL-PRF-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 HYBRID DC-DC CONVERTERS WITH INTEGRAL EMI FILTER FEATURES • High Reliability • Very Low Output Noise • Wide Input Voltage Range: 15 to 50 Volts per MIL-STD-704 • Up to 40 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 Seam Welded Hermetic Package • High Power Density: > 30 W/in3 • 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, CS01 and CS02 • Flanged and Non-flanged Versions Available • MIL-PRF-38534 Element Evaluated Sales Information: Phone: (425) 353-3010 Fax: (425) 353-4030 E-mail: [email protected]

1. Dependent on output voltage. 2. Time for output voltage to settle within 1% of its nominal value. 4. Verified by initial electrical design verification. Post design verification, parameter shall be guaranteed to the limits specified. 5. Correction factor of 0.12 added to ceramic capacitors.

1. Dependent on output voltage. 2. Time for output voltage to settle within 1% of its nominal value. 4. Verified by initial electrical design verification. Post design verification, parameter shall be guaranteed to the limits specified. 5. Correction factor of 0.12 added to ceramic capacitors.

1. Dependent on output voltage. 2. Time for output voltage to settle within 1% of its nominal value. 4. Verified by initial electrical design verification. Post design verification, parameter shall be guaranteed to the limits specified. 5. Correction factor of 0.12 added to ceramic capacitors.

DVETR2800S Series BLOCK DIAGRAM PIN 1 UNDER VOLTAGE SHUTDOWN PRIMARY HOUSEKEEPING SUPPLY VOLTAGE AND CURRENT AMPLIFIERS SECONDARY HOUSEKEEPING SUPPLY

DVETR2800S Series CONNECTION DIAGRAM INHIBIT DRIVE CONNECTION DIAGRAMS OPTIONAL CAPACITOR OPTIONAL CAPACITOR 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)

The output voltage can be trimmed up by connecting a resistor between the +S pin (PIN 6) and the OUT COM pin (PIN 4). The maximum trim range is +10%. The appropriate resistor values versus the output voltage are given in the trim table below. The -S pin should be connected to the OUT COM pin. Figure 6 - Output Voltage Trim DVETR283R3S Notes: 1. Connect R-TRIM = 400Q from +VOUT (PIN 5) to +S (PIN 6).

DVETR2800S Series EFFICIENCY PERFORMANCE CURVES (TCASE = 25°C, Full Load, Unless Otherwise Specified) VIN = 16V Efficiency (%) vs. Output Power (W) Efficiency (%) vs. Output Power (W) Efficiency (%) vs. Output Power (W) Efficiency (%) vs. Output Power (W)

DVETR2800S Series EMI PERFORMANCE CURVES (TCASE = 25°C, VIN = +28V ± 5%, Full Load, Unless Otherwise Specified)

Figure 13 - Non-Flanged, Seam Seal Package and Pinout

Figure 14 - Flanged, Seam Seal Package and Pinout

DVETR2800S SeriesENVIRONMENTAL SCREENING (100% Tested Per MIL-STD-883 as referenced to MIL-PRF-38534) Test 1. Contact Sales for more information concerning additional environmental screening and testing options desired. 2. 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. 3. 100% R&R testing with all test data included in product shipment. 4. Not required per MIL-PRF-38534. Test is performed for additional product quality assurance. 5. Non-QML products may not meet all requirements...

Contact the VPT Inc. Sales Department for availability of Class H (/H) and KL1 (/KL1) 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. -KL1 products are identical in every way with Class K products in compliance with MIL-PRF-38534 revision L and later revisions except they contain elements evaluated to the requirements of MIL-PRF-38534 revision K and previous revisions. These devices are not marked with an SMD number or MIL-PRF-38534 certification mark...

SMD (STANDARD MICROCIRCUIT DRAWING) NUMBERS Standard Microcircuit Drawing (SMD) Do not use the DVETR2800S 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 DLA Land and Maritime (Previously known as DSCC) website at https://landandmaritimeapps.dla.mil/programs/defaultapps.asp0. 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...

CONTACT INFORMATION To request a quotation or place orders please contact your sales representative or the VPT Inc. Sales Department at: Phone: (425) 353-3010 E-mail: [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.