The document describes the features and characteristics of the DVTR series of high reliability DC-DC converters. These converters can operate over the full military (-55 °C to +125 °C) temperature range without power derating. The DVTR series features a unique radiation immune magnetic feedback circuit. Operating at a nominal fixed frequency of 500 kHz, these regulated, isolated units utilize undervoltage lockout circuitry to eliminate slow start-up problems. The converters are designed and manufactured in a facility qualified to ISO9001 and certified to MIL-PRF-38534 and MIL-STD-883. The 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.
The DVTR2800D Series provides isolated, regulated DC‑DC conversion for demanding military and space applications. It operates over a full military temperature range (-55 °C to +125 °C) with a fixed 500 kHz switching frequency, features a magnetic feedback circuit that is radiation immune, and includes protections such as undervoltage lockout, short‑circuit and current‑limit protection. Output power reaches up to 40 W with very low output noise and high input transient capability.
Ordering information, part numbers, and contact details are provided for VPT Inc. sales representatives. Options include flanged or non‑flanged packages, radiation‑hardened versions, and various screening levels. For quotations or special requirements, contact VPT Inc. at (425) 353‑3010 or vptsales@vpt‑inc.com.
| Input Voltage (Continuous) | 28 V |
|---|---|
| Input Voltage (Transient, 1 s) | 80 V |
| Output Power | 40 W |
| Isolation Voltage | 500 V |
| Switching Frequency | 500 kHz |
| Operating Temperature Range | -55 °C to +125 °C |
| Weight (Maximum, Un‑Flanged / Flanged) | 49 g / 52 g |
| Input Voltage Range (Feature) | 15 V to 50 V |
The DVTR2800D Series can deliver up to 40 W of output power.
The device includes undervoltage lockout, indefinite short‑circuit protection, and current‑limit protection.