DVHV2800D Series HIGH RELIABILITY HYBRID DC-DC CONVERTERS DESCRIPTION The DVHV 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 DVHV series are robust and effective input and output filters which provide dramatically reduced input and output noise performance when compared to other manufacturers competing devices. Operating at a nominal fixed frequency of 475 kHz, these regulated, isolated units utilize a high speed magnetic feedback design and well controlled undervoltage 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 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 Seam Welded Hermetic Package • Custom Versions Available • Additional Environmental Screening Available • Meets MIL-STD-461 Revisions C, D, E and F EMC Requirements When Used With VPT’s EMI Filters • Flanged and Non-flanged Versions Available. • MIL-PRF-38534 Element Evaluated Components • Space Applications should consider VPT’s "S” Series of Radiation Tolerant Power Conversion Devices. Contact VPT for details. Sales Information: Phone: (425) 353-3010 Fax: (425) 353-4030 E-mail: [email protected]

See notes next page.

1. Dependent on output voltage. 2. Time for output voltage to settle within 1% of its nominal value. 4. Verified by qualification testing. 5. Half load at +Vout and half load at -Vout. 6. Up to 70% of the total power or current can be drawn from any one of the two outputs. 7. Correction factor of 0.12 added to ceramic capacitors.

See notes next page.

1. Dependent on output voltage. 2. Time for output voltage to settle within 1% of its nominal value. 4. Verified by qualification testing. 5. Half load at +Vout and half load at -Vout. 6. Up to 70% of the total power or current can be drawn from any one of the two outputs. 7. Correction factor of 0.12 added to ceramic capacitors.

DVHV2800D Series BLOCK DIAGRAM D2 UNDER VOLTAGE SHUTDOWN PRIMARY HOUSEKEEPING SUPPLY VOLTAGE AND CURRENT AMPLIFIERS SECONDARY HOUSEKEEPING SUPPLY CONNECTION DIAGRAM

DVHV2800D Series 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) EMI FILTER HOOKUP DIAGRAM LOAD SYNC Figure 6 – Converter with EMI Filter

DVHV2800D Series EFFICIENCY PERFORMANCE CURVES (TCASE = 25°C, Full Load, Unless Otherwise Specified) VIN = 16V Figure 7 – DVHV2805D Efficiency (%) vs. Output Power (W) Figure 8 – DVHV2812D Efficiency (%) vs. Output Power (W) Figure 9 – DVHV2815D Efficiency (%) vs. Output Power (W)

DVHV2800D Series CROSS REGULATION CURVES (TCASE = 25°C, Full Load, Unless Otherwise Specified) +Io = 10% Figure 12 – DVHV2815D -Vout (V) vs. -Iout (A)

DVHV2800D SeriesEMI PERFORMANCE CURVES(Tcase = 25°C, Vin = +28V ± 5%, Full Load, Unless Otherwise Specified) Emission Level [dBuA] Emission Level [dBuA] Emission Level [dBuA]

Figure 15 - Non-Flanged, Seam Seal Package and Pinout

Figure 16 - Flanged, Seam Seal Package and Pinout

DVHV2800D Series ENVIRONMENTAL SCREENING (100% Tested Per MIL-STD-883 as referenced to MIL-PRF-38534) Test © Contact Sales for more information conceming additional environmental screening and testing options desired. © 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. © 100% R&R testing with all test data included in product shipment. © Not required per MIL-PRF-38534. Test is performed for additional product quality assurance. © Non-QML products may not meet all requirements...

Notes: 1. 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.

Do not use the DVHV2800D 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.asp. The SMD number listed above is for 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. All SMD products are marked with a "Q” on the cover...

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.