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Vishay enables simple, flexible prototyping with new plug-in versions

Vishay Electronic : 17 May, 2004  (New Product)
In a move that will help streamline the prototyping process for designers of intermediate bus architecture/point-of-load, battery back-up, and other power supply types, Vishay Intertechnology, Inc. today announced that it is offering plug-in versions of all devices in its FunctionPAK family of fully integrated dc-to-dc converters.
The new plug-in models of the FunctionPAK dc-to-dc converter family are complete programmable-topology synchronized buck or boost converters that provide design flexibility for the rapidly changing electronics market. Because they can be plugged easily into a 'bread board' for prototyping and testing within circuitry, these versatile plug-in devices may be used to simplify product development, particularly for engineering labs with limited assembly equipment.

Like other FunctionPAK converters, the new plug-in versions allow designers to power a wide variety of loads, including FPGAs, power amplifiers, microcontrollers, or baseband logic ICs. The FunctionPAK plug-in module has a 0.1-in. grid pin configuration for soldering directly into the circuit board, but each FunctionPAK comes with a standard socket for the added flexibility of switching different modules in and out of the circuit.

FunctionPAK converters shift dc voltage levels while stabilizing power outputs, filtering noise, and reducing ripple in power supplies used for fixed telecom, server, and portable electronics applications. POL power conversion applications for drivers for FunctionPAK converters are available with up to a 15 W output and a 4 A current output, making them ideally suited for most POL applications where an IBA drives semiconductor devices such as FPGAs, microprocessors, DSPs, and amplifiers through the POL converters. The FunctionPAK family also includes a dc voltage-to-dc constant current converter with adjustable output voltage and adjustable output current up to 2 A for use in such applications as driving power LEDs in lighting systems or driving laser diodes in laser systems.

FunctionPAK devices are capable of converting a range of 2.5-V to 6-V inputs to 0.8-V to 6-V output voltages. High-efficiency operation is delivered over a large load range, with synchronous-rectified PWM mode operation under full load and externally controlled pulse-skipping mode under light load conditions. With 100% duty cycle control for PSM operation, the converter acts much like a saturated linear regulator to extract every bit of power from single-cell lithium ion or triple-cell NiCd and NiMH battery packs and thus deliver the highest potential output voltage in battery-operated implementations.

Vishay's FunctionPAK converters feature a select combination of primary and secondary power MOSFETs, a controller IC, and up to 18 passive components in one package, taking up significantly less board space than even the tightest discrete layout while delivering efficiency up to 95%. No external components are required for a complete solution.

For maximum reliability, the BGA package for FunctionPAK is rated for the full industrial temperature range of −40 C to +85 C and specified for military operating temperatures, shock levels, and moisture resistance.

Prototyping quantities of the new FX5545GPI plug-in series are available now, with lead times of eight weeks for production stock. Samples of modules already mounted on demo boards for initial evaluation are still available upon request.
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