TI delivers highest efficiency 4A switch buck-boost converter in 60 percent less board space

The buck-boost device operates with a wide input voltage range of 1.8 V to 5.5 V and can discharge lithium batteries down to 2.5 V or lower, while maintaining excellent light load efficiency. The single-inductor, 2.4-MHz TPS63020 converter comes in a 3-mm x 4-mm x 1-mm package, and can achieve a complete DC/DC converter solution of 100 mm2, more than 60 percent smaller than the competition.



“Designers of handheld electronics continue to try to get more out of their batteries, especially now as they add wireless connectivity with higher data rates and more features to their handheld electronics,” said Steve Anderson, senior vice president of TI’s power management business unit. “Higher current buck-boost converters, such as the TPS63020, help manage the power in the most efficient, most effective way possible, in the smallest amount of board space.”



Key features and benefits of TPS63020:



· High output current capability allows a battery-powered device to generate the most current with the greatest amount of efficiency; for example, 3 A at 3.3 V in step-down mode and more than 2.0 A at 3.3 V in boost mode at typical conditions.



· Dynamic input current limit effectively protects the circuit and system.



· Power Save Mode maintains high efficiency at light load.



· Supports one-cell lithium-based or 2- or 3-cell Alkaline, NiCd or NiMH batteries.





TI provides the industry’s most comprehensive line of buck-boost and step-down DC/DC converters to support any portable power requirement. In 2006 TI introduced its TPS630xx buck-boost converter family. In addition to DC/DC converters, TI offers linear and switch-mode battery chargers for portable electronics, including the new bq24156 switch-mode battery charger for single-cell lithium batteries.



The TPS63020 converter and a 3.3-V fixed output voltage version, the TPS63021, are available in volume now from TI with a suggested resale price of $2.50 in 1,000-unit quantities. Samples, evaluation modules and application notes are available.