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DOSA-based High Efficiency Bus Converters Offer Lower Cost Digital Power Alternatives

Tue, 01/25/2011 - 8:54am
Lineage Power Corporation today introduced the Barracuda family of digitally controlled, fully-regulated bus converters for DC-DC Intermediate Bus Architectures. The cost-effective, high-efficiency Lineage Power® Barracuda™ series delivers digital power communication and control in standards-based eighth-brick and quarter-brick DOSA footprints. Power design engineers can deploy the new Barracuda modules in existing power designs as DOSA-compliant, drop-in upgrades for unregulated and semi-regulated bus converters challenged by recent industry-wide intellectual property issues. As part of the Lineage Power Total Efficiency™ architecture, the new Barracuda modules deliver efficiency of 96 percent and are priced comparable to current semi-regulated bus converters to encourage rapid adoption in new and existing product designs.

The Barracuda QBVW series is a digitally controlled drop-in alternative for unregulated and semi-regulated bus converter products. The PMBus™ Rev.1.1-compliant Barracuda QBDW series features built-in I2C digital communications to enable design engineers to leverage the benefits of both digital communication and control. Both members of the Barracuda family are designed to provide a 9.6 to 12 Vdc intermediate bus voltage after which multiple, low voltage rails are generated using additional Point of Load (POL) converters such as DLynx™.

This architecture is designed to power silicon devices such as processors and memory devices on circuit boards using POL converters. Barracuda converters can also be utilized for other applications requiring a fully-regulated output voltage in distributed power architectures deployed in networking, Power over Ethernet (PoE), computing and data storage devices.

New synchronization features, active load sharing and differential remote sense are combined with a digital PMBus interface that supports a wide range of commands to both control and monitor the Barracuda modules with a full range of protections and warnings, digital on/off, trim, margin, power good, rise time adjustment, and input under voltage lockout.

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