MILPITAS, USA: Intersil Corp. announced five new additions to the ISL911xx family of market leading buck-boost and boost switching regulators, optimized to support system power supplies and peripherals such as Wi-Fi or 3G/4G RF power amplifiers.
Intersil's proprietary four-switch buck-boost architecture extends battery life by enabling industry leading efficiency of up to 96 percent and providing smooth transitions from buck to boost to prevent glitches and noise in smartphones, tablets and other single-cell lithium ion (Li-ion) or Li-polymer battery systems.
The ISL9110x buck-boost regulator family is capable of working with the ultra-small inductors and capacitors to fit within less than 14mm2 board footprint, making them the ideal 2A switching converter solution for space-constrained mobile devices.
The advanced wafer-level CSP package requires only a single inductor and very few external components, which minimizes overall space requirements. The ISL911xx regulators' 2.5MHz switching frequency further reduces the power supply solution size.
The new ISL91106 and ISL91107 buck-boost regulators offer a wide input range (1.8V – 5.5V) and integrated 3.6A switches that deliver up to 2x faster transient response than the closest competitor. This enables mobile devices to handle large current bursts from spikes in power consumption without significant output disturbance.
The 2A output buck-boost converters permit reliable system operation under all load conditions, and enable higher efficiency power supplies that occupy less PCB space. Unlike competing buck-boost regulators, when input is close to output the product automatically transitions between bypass and buck-boost operating modes without output disturbance. This maximizes the power efficiency of the system.
The ISL91106 also includes a selectable forced bypass function for sleep mode or an ultra-low-power mode that permits the system to stay alive with nearly zero quiescent current.