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TI Unveils Integrated Power Management IC for DaVinci™ Technology-Based Portable Electronics

5 mm x 5 mm, 6-Channel PMIC Combines High-Efficiency and Digital Control to Extend Battery Life

Nov 6, 2006

DALLAS (November 6, 2006) -- Texas Instruments Incorporated (TI) (NYSE: TXN) introduced today the first power management integrated circuit (PMIC) fully optimized to support all power system requirements of a multimedia device based on DaVinciTM 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 percent power conversion efficiency. See: www.ti.com/sc06194.

TI's TPS65023 converter 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 mm x 5 mm QFN package, integrates three step-down converters 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 V and 1.6 V, 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 400 kHz. All three of TPS65023's step-down converters 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 1-µA.
The TPS65023 also integrates two general-purpose, 200-mA linear dropout (LDO) voltage regulators that are enabled with an external input pin. Each LDO operates with an input voltage range between 2.5 V and 6.5 V, which allows each to be supplied from one of the integrated step-down converters or directly from the battery.

Integrated Features of the TPS65023:

  • 1.5-A, 90 percent efficient step-down converter for processor core 
  • 1.2-A, 95 percent efficient step-down converter for system voltage 
  • 1.0-A, 92 percent efficient step-down converter for memory voltage 
  • 30-mA LDO/switch for real time clock 
  • Two 200-mA general-purpose LDOs 
  • Dynamic voltage management for DaVinci processor core 
  • 85-µA typical quiescent current 
  • I2C compatible interface with data transfer up to 400 kHz 
  • Low ripple pulse frequency modulation (PFM) mode 
  • Thermal shutdown protection

Power Management Solutions for DaVinci Processors

TI offers the broadest portfolio of innovative power management products that support low-power DaVinci processors and other TI DSPs. TI's step-down DC/DC converters range from the TPS62300 and TPS62350 3 MHz devices for single-cell lithium battery-powered handheld applications to TI's TPS5430 SWIFTTM converter for multi-cell batteries. TI's power management products support any system based on DaVinci technology, including the low-noise TPS79901 low-dropout regulator (LDO), bq27200 battery gas gauge, bq24070 battery charger and TPS3808 supervisory circuit. For more Power for DaVinci technology products, see: www.ti.com/dsppower

Available Today

The TPS65023 is available in volume production from TI and its authorized distributors. The converter comes in a 40-pin, 5 mm x 5 mm QFN package. Suggested retail pricing is $3.85 in 1,000-piece quantities. Evaluation modules of the TPS65023, application notes and TI's comprehensive portfolio of power management ICs are available through power.ti.com.