Power Combo ICs target 2-in-1s, ultrabooks, tablets

The ISL95852 PMIC and the ISL95521 battery charger are power saving solutions for 2-in-1s, ultrabooks and tablets. Both devices meet Intel‘s IMVP8 specifications to support its new “Skylake” 6th Gen Intel core processors. The ICs leverage Intersil’s patented R3 modulation technology, which delivers best-in-class light load efficiency, superior regulation accuracy and fast dynamic response, for better system power management and longer battery life.

The ISL95852 is the industry’s most integrated Vcore PMIC for IMVP8 platforms. Its 4 x 4-mm size and high switching frequency enable the use of small external inductors and capacitors to reduce board space by 50% compared to discrete solutions. The ISL95852 integrates control, MOSFET drivers, power MOSFETs and fault monitoring and protection for three synchronous buck switching regulators. These high-efficiency voltage regulators convert system voltage from a battery or ac-adapter into three voltage rails required for the core processor, graphics processor and system agent. The ISL95852’s programmable switching frequency is adjustable up to 1.3MHz during load transients.

  The ISL95521 is the industry’s first hybrid power boost (HPB) and narrow Vdc combination battery charger. Its charge current accuracy of 1.2% is 4x higher than competing solutions, and extends battery run-time while enabling faster system test and calibration for improved manufacturing yields. The ISL95521 combo battery charger is pin-configurable for HPB or narrow Vdc mode, eliminating the need for circuit redesigns. Both configurations support 2-cell to 4-cell Li-ion batteries as well as system turbo-boost-mode, which helps the battery and ac-adapter work together to supply the system load when it exceeds the adapter’s capability.