DVHF2800S
18Pages

DVHF2800S SeriesHIGH RELIABILITY HYBRID DC-DC CONVERTERS DESCRIPTION The DVHF 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 DVSA 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 20 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 Projection Welded Hermetic Package • High Power Density: > 37 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: vptsales@vptpower.com

DVHF2800S 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. Correction factor of 0.12 added to ceramic capacitors.

DVHF2800S 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. Correction factor of 0.12 added to ceramic capacitors.

DVHF2800S 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. Correction factor of 0.12 added to ceramic capacitors.

DVHF2800S 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. Correction factor of 0.12 added to ceramic capacitors.

DVHF2800S 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. Correction factor of 0.12 added to ceramic capacitors.

DVHF2800S Series BLOCK DIAGRAM PIN 8 UNDER VOLTAGE SHUTDOWN VOLTAGE AND CURRENT AMPLIFIERS PRIMARY HOUSEKEEPING SUPPLY SECONDARY HOUSEKEEPING SUPPLY CONNECTION DIAGRAM

DVHF2800S 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 DVMH28 EMI FILTER 1 Figure 6 – Converter with EMI Filter

DVHF2800S 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)

DVHF2800S 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)

DVHF2800S Series EMI PERFORMANCE CURVES (TCASE = 25°C, VIN = +28V ± 5%, Full Load, Unless Otherwise Specified) Figure 15 – DVHF2800S without EMI Filter Figure 16 – DVHF2800S with EMI Filter

Dimensional limits are ±0.005” unless otherwise specified. Case temperature is measured on the center of the baseplate. Material: Case (Steel, Gold over Nickel Plated), Cover (Steel, Nickel Plated), Pins (Alloy 52, Gold over Nickel Plated), Pin Seal (Glass). *Pin 3 of DVHF2828S provides a +14V output referenced to OUT COM. Figure 17 - Non-Flanged Package and Pinout