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Three new power management chips increase efficiency, voltage and output current in LED designs

Jan 22, 2009

DALLAS (January 23, 2009) - Texas Instruments Incorporated (TI) (NYSE:TXN) introduced today a high-power DC/DC boost LED driver (TPS61500) and high-voltage DC/DC boost converter (TPS61175), and expanded its step-down DC/DC converter series with TPS62110. These devices can support input voltages of up to 18 V and feature smaller voltage references for improved LED circuit design. These energy-efficient devices are cross-functional and work across a variety of LED applications, including signage, ambient light, office light, general illumination, military, medical and sensors. For product details, see www.ti.com/tps61500-pr, www.ti.com/tps61175-pr and www.ti.com/tps62110-pr.

Key features of the TPS61500
  • 2.9-V to 18-V input voltage range
  • 3.0-A current switch with integrated FET
    • Four 3- W LEDs from 5 Vin
    • Eight 3-W LEDs from 12 Vin
  • 200 kHz to 2.2 MHz switching frequency
  • Brightness dimming
  • User-defined soft start
  • 93 percent efficiency
Key benefits of TPS61500
  • Wide input supply range for 12-V or 15-V industrial power rails
  • Up to 1-A output current
  • HTSSOP package for best thermal behavior
  • Can be tailored to many applications
Key features of TPS61175
  • Wide input voltage range of 2.9 V to 18 V
  • 3.0-A/40-V integrated MOSFET
  • Wide switching frequency of 200 kHz to 2.2 MHz
Key benefits of TPS61175
  • Supports industrial applications with 12-V, 15-V bus
    systems or multi-cell applications
  • Builds small, internal compensation and enables flexible
    configurations for different application needs like boost,
    SEPIC and fly back converters
  • Offers choice to design for efficiency, smallest solution
    size or specific frequency range
Key features of TPS62110
  • Adjustable input voltage: 3.1 V to 17 V
  • Adjustable output voltage: 1.2 V to 15 V
  • Maximum output current 1.5 A
  • Maximum efficiency 95 percent
  • Quiescent current: 20 uA; 2 uA in shutdown
  • Switching frequency: 1 MHz
  • Power good and low-battery detectSoft start limits in-rush current
Key benefits of TPS62110
  • Closes the gap between low-power DC/DC converters for
    portable applications and higher power DC/DC SWIFTTM
    converters for industrial applications
  • As a LED driver new lighting achieves up to 90 percent in
    energy savings and the life time of the light increases up to 8 times
  • Can support fixed line rails like 12 V or 15 V, as well as a
    flexible number of battery cells
  • Small QFN package and small exterior inductor (6.8 uH) result
    in small overall solution size

Availability and pricing

The TPS61500, TPS61175 and TPS62110 are available now in production quantities. Please see the table below for packaging and pricing information for each device. Prices are based on 1,000-unit quantities.


Device Package Pricing

Device

Package

Pricing

TPS61500

14-pin HTSSOP

$1.60

TPS61175

14-pin HTSSOP

$1.80

TPS62110

4 x 4mm QFN

$1.90


TI's LED portfolio

From RF and power management (including AC/DC, power factor correction, DC/DC and linear power conversion) to 32-bit real time microcontrollers (MCU), ultra-low-power 16-bit MCUs and digital signal processors (DSP), TI has products for all of your LED design needs. Find out more about TI's LED driver portfolio by visiting the links below.




Posted 23 Jan 2009 3:00 AM by NewsCenter