Power chip is made for DaVinci DSP supplies

Power management integrated circuit is fully optimised to support all power system requirements of a multimedia device based on DaVinci technology.

Texas Instruments has developed a power management integrated circuit (PMIC) fully optimised to support all power system requirements of a multimedia device based on DaVinci technology.

Simplifying power design in portable media players, digital still cameras and other lithium-battery powered electronics, the flexible device provides dynamic voltage scaling and up to 95% power conversion efficiency.

TI's TPS65023 convertor manages the power in a TMS320DM644x digital signal processor (DSP) based on DaVinci technology with high-performance digital control and maximum efficiency across the widest possible range of load currents up to 1.5 A.

The device, which comes in a small 5 x 5mm QFN package, integrates three step-down convertors to support the system's core voltage, peripheral, I/O and memory voltage.

The TPS65023 uses an I2C communications interface to implement a dynamic voltage scaling technique that digitally adjusts the core output voltage level between 0.8 and 1.6V, allowing the system to conserve power.

The interface is compatible with fast/standard and high-speed mode I2C specification, which allows data transfer up to 400kHz.

All three of TPS65023's step-down convertors allows the device to operate in a power-save mode at light-load currents, and can be placed in a shutdown mode when power consumption is reduced to less than 1uA.

The TPS65023 also integrates two general-purpose, 200mA linear dropout (LDO) voltage regulators that are enabled with an external input pin.

Each LDO operates with an input voltage range between 2.5 and 6.5V, which allows each to be supplied from one of the integrated step-down convertors or directly from the battery.

The TPS65023 is available in volume production from TI and its authorised distributors.

Suggested retail pricing is US $3.85 in 1000-piece quantities.

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