High Efficiency High Current BuckBoost Regulators for PortablesNovember 02, 2016 by EE Power Editorial
Intersil Corporation announced the ISL91127 and ISL91128 high efficiency buck-boost regulators. The latest in Intersil’s industry-leading buck-boost
Intersil Corporation announced the ISL91127 and ISL91128 high efficiency buck-boost regulators. The latest in Intersil’s industry-leading buck-boost family, the new devices feature 4.5A switches, best-in-class efficiency up to 96%, and a compact footprint ideal for providing system power or powering the peripherals in battery-operated devices. They offer the industry’s lowest quiescent current of 30µA for superior light load efficiency.
In hand-held device applications where the input voltage may be higher or lower than the output voltage, buck-boost regulators improve efficiency and provide longer battery life compared to a boost regulator plus bypass solution. With increasing demands for smaller and smaller footprints, Intersil’s ISL9112x compact QFN and WLCSP packages enable power designs that maximize efficiency while providing flexibility and ease of design.
The ISL91127 and ISL91128 operate in buck, boost or buck-boost mode, depending on the relation between input and output voltages, and provide smooth transitions between modes to prevent noise and glitches. This capability, combined with patented Intersil technology for delivering superior light load efficiency with ultra-low quiescent current, maximizes efficiency under all conditions. This is essential to improve battery life by reducing power drain and heat dissipation in portable and mobile applications.