Power management front-end chip boosts battery run-time in ARM Cortex A15-based designs

February 05, 2013 // By Paul Buckley
Texas Instruments Incorporated has introduced what the company claims is the industry’s first single-chip, front-end power management unit (PMU) for battery-powered applications based on ARM Cortex A9 and A15 processors.

The TPS65090 power management integrated circuit integrates all power management functions and maximizes power efficiency to extend battery run-time in tablets and other portable electronics by 20 percent, simplify design, and reduce board space by 60 percent compared to a discrete approach.

The innovative front-end PMU integrates a 4-A switching PowerPath charger, three 5-A DC/DC step-down converters, seven load switches, two always-on LDOs and a 10-channel analog-to-digital converter (ADC).  
The TPS65090 offers a 20-percent increased battery run-time by delivering up to 95-percent efficiency across 8-V to12-V output voltages for two to three cells in series.
The device integrates 15 functions into one front-end circuit to reduce the bill of materials and achieve a 60-percent smaller total solution than using discrete ICs.  
The integrated 4-A, multi-cell switching charger helps to cut charging time in half.
The power switches allow independent control of each major subsystem, and the 10-bit ADC allows easy, accurate monitoring of power consumption.
Availability and Pricing
The TPS65090 is available today in multi-row QFN packaging for a suggested retail price of $4.95 in 1,000-unit quantities. Designers can order the TPS65090EVM evaluation module to quickly evaluate their designs and speed time-to-market.
More information about the TPS65090 at www.ti.com/tps65090-pr-eu