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Home > Technology List > PMICs optimized to support subsystem peripheral power requirements

PMICs optimized to support subsystem peripheral power requirements

Update Time: 2019-12-20 23:53:34

PMICs optimized to support subsystem peripheral power requirements

Highly integrated power management ICs (PMICs) that enable the industry’s first credit card-size motherboards for high-end ultrabook and tablet computers are powered by 2-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 5.5mm x 5.5mm, 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 2x 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 WiFi.

The ISL9590x are the industry’s only single-chip solutions that support the Intel and Microsoft Connected Standby standard, which provides an instant-on, always-connected experience similar to smartphones. The Connected Standby low-power mode maintains Internet connectivity, email and applications while the system is asleep. Both PMICs employ Intersil’s proprietary R4 modulation technology, which delivers high light-load efficiency, ultra-fast transient response, and seamless continuous-conduction mode (CCM) and discontinuous-conduction mode (DCM) transitions.

Key Features and Specifications of ISL95908 and ISL95906
• ISL95908 provides IMPV8 regulation at 5V, 3.3V, 1.8V/2.5V, 1V, 0.975V, and 0.9V
• ISL95906 provides VR12.6 regulation at 5V, 3.3V, 1.8V,1.5V, 1.05V
• Eight efficient 1MHz integrated FET switching regulators
• Internal compensation eliminates need to design external compensation network
• Programmable VR3 and VTT regulators for system memory, including DDR3/L/U, LPDDR3 and DDR4
• Connected standby with low-power consumption mode
• Extensive fault protection for over-current, over-voltage, under-voltage, and over-temperature with alert signal
• Independent power-good indicator for each regulator
• Independent enable signals for each regulator offers maximum sequencing flexibility
• I2C bus allows system fault monitoring, enable control, configurable GPIO and output voltage offset programming
• Configuration pin for additional system programming

Pricing and Availability
The ISL95908 and the ISL95906 are available now in 5.5mm x 5.5mm, 121-bump WLCSP packages. Pricing for both PMICs is $7 USD in 3k quantities. For more information on the ISL95908, please visit: www.intersil.com/products/isl95908. For more information on the ISL95906, please visit: www.intersil.com/products/isl95906

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