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1/8 brick DC/DC module ups system power performance

Posted: 06 Jun 2007 ?? ?Print Version ?Bookmark and Share

Keywords:DC/DC converter? board space optimization? eighth-brick DC/DC module?

Ericsson Power Modules AB announces that its PKB-C DC/DC converter offers more output power compared with similar available products. The part meets customers' needs for higher power in a smaller package than the traditional quarter-brick, or alternatively aiming to obtain higher power in a standard eighth-brick format when upgrading boards to achieve higher performance levels.

Using a secondary digital monitoring circuit, the PKB-C offers control of different customers' output circuit characteristics, including latching, overvoltage protection, overcurrent protection and over temperature protectionall without adding any extra components. Because this circuit can be programmed during manufacturing, it reduces time-to-customer when a tailor-made protection configuration is required.

Designated as PKB4110C PI 3.3V at 40A, the module has two versions: through-hole and surface-mount. There is also a further mechanical option that features a broader baseplate to cater for higher operating temperatures in situations where airflow is reduced.

Smart solution
The PKB-C is aimed at existing eighth-brick customers aiming to provide power for applications demanding higher power without redesigning boards for larger products such as quarter-brick. This saves time and costs and makes transition faster and easier. Customers facing challenging board space optimization and migrating from quarter-brick to eighth-brick will also find the converter very useful.

The surface mount version of the PKB-C is less than 9mm high making the module is suitable for applications designed for low building height.

Designed for use with 48V input applications, the PKB-C is primarily made for telecom and datacom applications such as routers, servers, data storage and wireless network systems. It can also be used other applications requiring high power density modules with a high thermal performance such as process control, robotics and embedded computer applications.

Enhanced features
Compared to Ericsson Power Modules' original PKB eighth-brick module, the output power of the new product has been increased significantly, delivering in the same environment up to 60 percent extra power (from 25A up to 40A at 3.3V).

The inclusion of the secondary digital monitoring control circuit makes it possible to characterize the module during manufacturing without adding any extra components and on a unique PCB, to customize the output protection requirements to meet specific requirements. The use of secondary-side control enables tighter control of Vout and ensures that the most stringent requirements for monotonic and prebiased start-up can be met. A digital MCU handles all the protection features, simultaneously taking up a minimal amount of the space needed for the current doubler and the power train. Thus, a single, basic product can be defined in an infinite number of combinations to provide a customized product at the same cost as a standard module.

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