VPT Inc., a HEICO company, has introduced a new bus converter module – the VPTHVM-270 series. With up to 200W of output power, this regulated bus converter module operates from a 270V bus to step down the power to create a regulated 28V bus for avionics power systems.
"With this new module, engineers can create a 28V bus to run many of the avionics subsystems, such as electronic warfare or other instrumentation," explained Michael J. Bosmann, Senior Vice President of Sales and Marketing for VPT. "The new VPTHVM-270 serves as the cornerstone for a distributed power system, powering multiple VPT dc-dc converters from a single module."
A wide input voltage range accommodates MIL-STD-704 input power requirements for avionics and other applications. According to the company, the high efficiency design reduces input power requirements and eases thermal management, thereby increasing the overall system reliability. With a footprint of just 2.35 (59.69) by 1.550" (39.37 mm) and weighing in at 85 grams, the VPTHVM-270 series is said to save valuable space and weight in a power system.
Additional product features include: up to 200W output power; single output; high efficiency up to 91%; a wide input voltage range of 160 to 500V per MIL-STD-704; full operation over a wide -55 to +100°C Standard; a high isolation of 3000V; can be used in parallel up to five units with current sharing; undervoltage lockout, fixed frequency, output soft start; environmental screening including a 96 hour burn-in, 100% electrical testing, and temperature cycling testing Standard for all products; and testing to JESD22, MIL-STD-810, MIL-STD-883.
A rugged six-sided all metal package provides performance reliability through the harsh environments of vibration, shock and temperature cycling. The new VPTHVM-270 module works to satisfy the Department of Defense’s "Commercial-off-the-Shelf" (COTS) directive in terms of low cost, high performance, and satisfaction of stringent avionics and military industry requirements.
New units are typically available in a short lead time. Units are priced at $414.00 in OEM quantities.