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News

New LITTLE FOOT plus driver products for high- and low-side DC-DC operation integrate MOSFETs

Vishay Electronic : 12 February, 2003  (New Product)
Five new LITTLE FOOT Plus Driver products designed to simplify the use of n-channel MOSFETs in high-frequency buck regulators were announced today by Siliconix incorporated, an 80.4%-owned subsidiary of Vishay Intertechnology, Inc. With efficiencies better or comparable to competing implementations in the MLF/QFN/Power Block packages, these new devices in the LITTLE FOOT SO-16 feature a ≥38% smaller, standard footprint, simplifying design, assembly, soldering, and layout.
Five new LITTLE FOOT Plus Driver products designed to simplify the use of n-channel MOSFETs in high-frequency buck regulators were announced today by Siliconix incorporated, an 80.4%-owned subsidiary of Vishay Intertechnology, Inc.

With efficiencies better or comparable to competing implementations in the MLF/QFN/Power Block packages, these new devices in the LITTLE FOOT SO-16 feature a ≥38% smaller, standard footprint, simplifying design, assembly, soldering, and layout.

The n-channel Si4738CY (20 V), Si4770CY (20 V), Si4724CY (30 V), Si4732CY (30 V), and Si4768CY (30 V) synchronous MOSFETs with integrated driver circuitry are designed to extend battery life and/or enable more efficient use of power. Applications will include high-frequency, multi-phase dc-to-dc switchmode power supplies for CPU core, graphics control, chipset, and auxiliary power in systems including desktop computers, servers, workstations, notebook computers, and tablet PCs, and point of load applications for fixed telecom systems.

With optimized on-resistance values and 'shoot-thru' protection for low-side operation, and QGD optimized for high efficiency in high-side operation, the new devices provide high efficiency while enabling an integrated board layout with significant space savings over discrete solutions.

By integrating two MOSFETs and a driver in a compact SO-16 package, the Vishay Siliconix devices released today offer reduced gate-drive losses and higher switching frequencies while simplifying board layout and allowing designers to implement less-complicated controller solutions.The Si4724CY also features an integrated Schottky diode, further reducing the number of components required on the printed circuit board.
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