Intersil Corporation introduced a pair of highly integrated power management ICs (PMICs) that enable the industry's first credit-card-sized motherboards for high-end ultrabook and tablet computers powered by two-cell Li-ion batteries. The single-chip ISL95908 PMIC delivers eight voltage rails optimized to support subsystem peripheral power requirements for new Intel IMVP8 platforms, and the single-chip ISL95906 provides eight power rails for VR12.6-compliant systems. The devices measure 5.5 x 5.5 mm, enabling PC motherboards that are 75% smaller than previously possible using discrete switchers, inductors, and capacitors.
The ISL9590x PMICs address the trend toward slimmer ultrabooks, tablets, and 2-in-1 computers that offer more features and longer battery life. Both PMICs integrate a controller, power and driver MOSFETS, VTT LDO regulator, independent enable and power-good indicators, I2C interfaces, and fault protection/monitoring for eight synchronous buck regulators. They deliver 90% efficiency and integrate two times more functionality than the nearest competitor, allowing designers to use fewer external components, including smaller, low-profile inductors and capacitors. Now mobile computing OEMs only need three devices — PMIC, core voltage regulator, and battery charger — to power up the CPU/GPU, battery, and subsystem peripherals: flash memory, USB, HDMI, audio, sensors, camera module, and Wi-Fi.
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