DVTR2800D SeriesHIGH RELIABILITY HYBRID DC-DC CONVERTERS DESCRIPTION The DVTR 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 DVTR 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: 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: > 40 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 • 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]

SPECIFICATIONS (Tcase = -55°C to +125°C, Vin = +28V ± 5%, Full Load5, Unless Otherwise Specified) ABSOLUTE MAXIMUM RATINGS See notes next page.

DVTR2800D SeriesSPECIFICATIONS (Tcase = -55°C to +125°C, Vin = +28V ± 5%, Full Load5, Unless Otherwise Specified) ABSOLUTE MAXIMUM RATINGS 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. 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. 5% Load to Full Load at -55°C. 8. Correction factor of 0.12 added to ceramic capacitors....

SPECIFICATIONS (Tcase = -55°C to +125°C, Vin = +28V ± 5%, Full Load5, Unless Otherwise Specified) ABSOLUTE MAXIMUM RATINGS See notes next page.

DVTR2800D SeriesSPECIFICATIONS (Tcase = -55°C to +125°C, Vin = +28V ± 5%, Full Load5, Unless Otherwise Specified) ABSOLUTE MAXIMUM RATINGS 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. 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. 5% Load to Full Load at -55°C. 8. Correction factor of 0.12 added to ceramic capacitors....

SPECIFICATIONS (Tcase = -55°C to +125°C, Vin = +28V ± 5%, Full Load5, Unless Otherwise Specified) ABSOLUTE MAXIMUM RATINGS See notes next page.

DVTR2800D SeriesSPECIFICATIONS (Tcase = -55°C to +125°C, Vin = +28V ± 5%, Full Load5, Unless Otherwise Specified) ABSOLUTE MAXIMUM RATINGS 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. 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. 5% Load to Full Load at -55°C. 8. Correction factor of 0.12 added to ceramic capacitors....

DVTR2800D Series BLOCK DIAGRAM D2 UNDER VOLTAGE SHUTDOWN PRIMARY HOUSEKEEPING SUPPLY VOLTAGE AND CURRENT AMPLIFIERS SECONDARY HOUSEKEEPING SUPPLY CONNECTION DIAGRAM

DVTR2800D 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

DVTR2800D 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)

DVTR2800D Series EFFICIENCY PERFORMANCE CURVES (TCASE = 25°C, Full Load, Unless Otherwise Specified) VIN = 16V Efficiency (%) vs. Output Power (W) Efficiency (%) vs. Output Power (W)

DVTR2800D Series CROSS REGULATION CURVES (TCASE = 25°C, Full Load, Unless Otherwise Specified) +Io = 10%

DVTR2800D Series CROSS REGULATION CURVES (TCASE = 25°C, Full Load, Unless Otherwise Specified) +Io = 10%

DVTR2800D SeriesEMI PERFORMANCE CURVES (Tcase = 25°C, Vin = +28V ± 5%, Full Load, Unless Otherwise Specified) Emission Level [dBuA] Emission Level [dBuA] Figure 17 - DVTR2800D without EMI Filter

DVTR2800D SeriesPACKAGE SPECIFICATIONS (NON-FLANGED) 0.405' nax [10,29nn] SIDE VIEW NDTESi 1. DIMENSIONAL LIMITS ARE +0.005' UNLESS OTHERWISE STATED, 2, CASE TEMPERATURE IS MEASURED ON THE CENTER OF THE BASEPLATE. 3, MATERIALS: CASFi STEEL, GOLD OVER NICKEL PLATED. COVER: KOVAR, NICKEL PLATED. PINS: COPPER CORED ALLOY 52, GOLD OVER NICKEL PLATED, PIN SEALS: CERAMIC Figure 19 - Non-Flanged, Seam Seal Package and Pinout