Synchronous buck regulators feature wide input voltage range and peak efficiencies of 98%

Vishay Intertechnology has increased its microBUCK family of synchronous buck regulators with new 2A to 10A devices featuring a wide input voltage range of 4.5V to 60V. Combining high performance n-channel trench MOSFETs with a controller in the compact MLP55-27L package, space-saving Vishay Siliconix SiC46X devices deliver high efficiency and power density while improving long term reliability and simplifying thermal management. The regulators feature high and low side MOSFETs with five times lower on-resistance than competing devices. Combined with their ultra low quiescent current, this results in high efficiencies over the full load range with peak efficiencies of up to 98%. The high efficiency reduces power losses, enabling system designers to increase power density. This family of regulators offer industry-leading output current capability and are unique in their ability to deliver output power >100W in 5mm x 5mm packages. The devices' high efficiency, combined with the superior thermal design of the MLP55-27L package, enables cooler operation for improved long term reliability while eliminating the need for a heatsink. This allows designers to shrink the PCB size, simplify thermal management, and reduce system costs.