DVCH2800S SeriesHIGH RELIABILITY HYBRID DC-DC CONVERTERS DESCRIPTION The DVCH 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 DVCH 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 FEATURES • High Reliability • Very Low Output Noise • Wide Input Voltage Range: 12 to 50 Volts per MIL-STD-704 • Up to 1.5 Watts Output Power • NO Use of Optoisolators • Fault Tolerant Magnetic Feedback Circuit • 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 Projection Welded Hermetic Package • High Power Density: > 7 W/in3 • 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. • 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]

DVCH2800S SeriesSPECIFICATIONS (Tcase = -55°C to +125°C, Vin = +28V ± 5%, Full Load, Unless Otherwise Specified) ABSOLUTE MAXIMUM RATINGS Notes: 1. Dependent on output voltage. 2. Time for output voltage to settle within 1% of its nominal value. 3. Derate linearly to 0 at 135°C. 4. Verified by initial electrical design verification. Post design verification, parameter shall be guaranteed to the limits specified. 5. Does not include changes due to static regulation. 6. Correction factor of 0.12 added to ceramic capacitors.

DVCH2800S SeriesSPECIFICATIONS (Tcase = -55°C to +125°C, Vin = +28V ± 5%, Full Load, Unless Otherwise Specified) ABSOLUTE MAXIMUM RATINGS Notes: 1. Dependent on output voltage. 2. Time for output voltage to settle within 1% of its nominal value. 3. Derate linearly to 0 at 135°C. 4. Verified by initial electrical design verification. Post design verification, parameter shall be guaranteed to the limits specified. 5. Does not include changes due to static regulation. 6. Correction factor of 0.12 added to ceramic capacitors.

DVCH2800S SeriesSPECIFICATIONS (Tcase = -55°C to +125°C, Vin = +28V ± 5%, Full Load, Unless Otherwise Specified) ABSOLUTE MAXIMUM RATINGS Notes: 1. Dependent on output voltage. 2. Time for output voltage to settle within 1% of its nominal value. 3. Derate linearly to 0 at 135°C. 4. Verified by initial electrical design verification. Post design verification, parameter shall be guaranteed to the limits specified. 5. Does not include changes due to static regulation. 6. Correction factor of 0.12 added to ceramic capacitors.

DVCH2800S Series BLOCK DIAGRAM PIN 1 UNDER VOLTAGE SHUTDOWN PRIMARY HOUSEKEEPING SUPPLY VOLTAGE AMPLIFIER CONNECTION DIAGRAM

DVCH2800S Series INHIBIT DRIVE CONNECTION DIAGRAMS 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 Figure 6 – Converter with EMI Filter

DVCH2800S SeriesEFFICIENCY PERFORMANCE CURVES (Tcase = 25°C, Full Load, Unless Otherwise Specified) Vin = 16V

MIL-STD-461C CE03 Emission Level [dBpA]Narrowband Emission Level [dB|jA]

DVCH2800S Series PACKAGE SPECIFICATIONS BETTEM VIEW SIDE VIEW NDTESi 1, DIMENSIONAL LIMITS ARE ±0,005* UNLESS OTHERWISE STATED. 2, CASE TEMPERATURE IS MEASURED EN THE CENTER EF THE BASEPLATE, 3, MATERIALS! CASE: STEEL, GOLD □ VER NICKEL PLATED, CDVERj STEEL, NICKEL PLATED, PINS; ALLEY 52, GELD EVER NICKEL PLATED, PIN SEALS! GLASS Figure 13 - Package and Pinout

DVCH2800S 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...

DVCH2800S SeriesORDERING INFORMATION DVCH 1. Contact the VPT Inc. Sales Department for availability of Class H (/H) and KL1 (/KL1) qualified products. 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. -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...

DVCH2800S Series SMD (STANDARD MICROCIRCUIT DRAWING) NUMBERS Do not use the DVCH2800S Series similar part number for DLA Land and Maritime (Previously known as DSCC) Drawing product acquisition. It is listed for reference only. For exact specifications for the DLA Drawing product, refer to the DLA Drawing. DLA Drawings can be downloaded from the DLA website at https://landandmaritimeapps.dla.mil/programs/defaultapps.asp. The DLA Drawing number listed above represents the Federal Stock Class, Device Type, Device Class Designator, Case Outline, Lead Finish and RHA Designator (where applicable)....