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Vishay boost converter a 'versatile solution'

Posted: 21 Jan 2005 ?? ?Print Version ?Bookmark and Share

Keywords:vishay intertechnology? functionpak? boost converter? fx5545g206?

Vishay Intertechnology Inc. expanded its FunctionPAK family of single-package dc-to-dc converters with a new synchronous boost converter that works with efficiencies of up to 95 percent.

The new FX5545G206 device delivers output power up to 15W at a maximum current of 2.5A. Designed for point of load (POL) applications in intermediate bus architectures (IBAs), this new product can be used where a single low-level voltage bus needs to be boosted up to the voltage needed to drive FPGAs, microprocessors, DSPs, DDR SDRAMs and other IC devices.

Housed in a 20-port BGA package that measures 14.7-by-12.2mm with a maximum height profile of 3mm, the low-profile FX5545G206 is a small multi-chip module that provides one layout for all models, power levels and current levels. Its programmable topology offers designers a versatile solution that satisfies the demands of the quickly evolving portable electronics market, said the company. The new converter also gives designers the option of using various battery configurations and chemistries with a single device.

The FX5545G206 features power density of more than 550W/in3. It is rated for an input voltage range from 2.7V to 6V and a programmable output range of 3.3V to 6V with low output ripple. Like other FunctionPAK converters, this product draws 1mA of current in shutdown mode and features programmable pulse-width modulation (PWM) and pulse-skipping mode (PSM) output controls.

With 100 percent duty cycle control for PSM operation, Vishay added, the converter acts much like a saturated linear regulator to extract every bit of power from single-cell Li-ion or triple-cell NiCd and NiMH battery packs and thus deliver the highest potential output voltage.

Samples and production quantities of the FX5545G206 are already available, with lead times of eight weeks for larger orders. A plug-in version is also available for prototyping.

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