New Industry Products

Tyco Half-Brick Designed for Wireless Power Amplifiers

January 12, 2006 by Jeff Shepard

Tyco Electronics Power Systems Inc. has introduced the JHW250 series of dc-dc converters, delivering up to 250W output power in an industry standard half-brick format for radio frequency (RF) power amplifier applications. Suitable for wireless base stations and other similar telecom equipment, the JHW250 provides a lower cost solution for RF power amplifier applications, distributed power architectures, and wireless networks.

The JHW250 series power modules are isolated dc-dc converters that operate over a wide input voltage range of 36 to 75 Vdc and provide a single, precisely regulated output of 30.2V. These modules incorporate synchronous rectification technology and innovative packaging techniques to achieve ultra high efficiency - typically 92% at 30.2V with full load.

The 5-sided encapsulated case package allows for excellent performance in a strict, thermal environment. The output is fully isolated, allowing versatile polarity configurations and grounding connections. In addition, the built-in filtering for both input and output minimizes the need for external filtering.

The JHW250 series is rated for a wide operating temperature range of -40°C to 85°C in an industry standard half-brick package of 57.9 mm x 61.0 mm x 12.7 mm (2.28 in. x 2.4 in. x 0.5 in.). Standard features include: remote on/off, remote sense, low output ripple and noise, over-temperature protection, 2:1 input voltage range, output overcurrent/voltage protection, and output voltage adjustment.

Threaded or non-threaded through-holes are available to allow for easy mounting to a cold wall; or the addition of a heatsink may be used for high-temperature applications. The converters are designed to be fully compliant to RoHS EU Directive 2002/95/EC and to be used at ISO 9001 certified manufacturing facilities.

Each module is priced at $86.10 for 1,000 units. Samples are available now and standard lead time is stock to 8 weeks.