Product category: Power Supply ICs and Controllers
News Release from: Texas Instruments (April 2001-March 2006) | Subject: TPS65130 and TPS60230
Edited by the Electronicstalk Editorial Team on 2 April 2004
Pair to power up portable displays
Texas Instruments has developed its first organic light emitting diode display power conversion IC and a new white LED charge pump for backlight applications
Extending efforts to support every power requirement for next-generation portable colour displays, Texas Instruments has developed its first organic light emitting diode (OLED) display power conversion IC and a new white LED charge pump for backlight applications. 'The market for OLED displays is expected to top $1 billion by 2006, with rapid growth driven by a shift from monochrome to colour', said Kimberly Allen, industry analyst from iSuppli.
This article was originally published on Electronicstalk on 2 April 2004 at 8.00am (UK)
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'These high-value displays offer the potential for manufacturers to produce thinner, lighter and more power efficient digital cameras and other portable electronics, and TI is stepping in at a key moment to support customers ready to go to market with OLED technology'.
TI's TPS65130 is a dual-output, DC/DC convertor optimised to generate a positive output voltage up to 15V and a negative output voltage down to -12V with programmable sequencing.
With a power conversion efficiency up to 89%, the new driver supports advanced OLED and charge-coupled device (CCD) sensor bias supply applications in battery-powered equipment such as cellular phones, PDAs, digital cameras and camcorders.
The TPS65130 supports an input voltage range of 2.7 to 5.5V, which allows it to be powered directly from a single-cell lithium-ion (Li-ion) battery or multicell nickel-metal hydride (NiMH), nickel-cadmium (NiCd) and alkaline batteries.
Meeting designer's need for board space reduction, the TPS65130 features a small 4 x 4mm QFN package and a minimum number of external components.
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The TPS65130 operates at a low quiescent current and with a fixed frequency pulse width modulation of minimum 1.25MHz, which allows the use of tiny 4.7uH inductors.
Independent enable pins allow power-up and power-down sequencing for both outputs.
Furthermore, load-disconnect during shutdown conserves battery life.
The TPS60230 white LED charge pump manages the power supplied to white LED colour display backlight applications in cellular phones, PDAs, digital cameras and camcorders without the need for an inductor.
The up to 87%-efficient 3 x 3 mm device can drive up to five white LEDs with a constant current of 25mA each, providing a total of 125mA.
The 1MHz switching frequency allows the use of small capacitors (below 1uF).
The brightness level of each LED is adjusted through PWM dimming functions on two enable inputs.
The OLED and CCD power supply convertor, and the new white LED charge pump extend TI's comprehensive portfolio of advanced power management ICs for next-generation portable displays.
In 2003, TI announced its first inductive white LED driver, the TPS61042, which supplies output voltages up to 28V, and can drive up to eight white LEDs with a constant current.
TI also recently announced its TPS61045 adjustable LCD bias boost convertor; its popular REG71055 white LED charge pump in ThinSOT-23; and the TPS6511x family of triple output charge pumps for small form factor low-temperature polysilicon LCDs.
The TPS65130 OLED power convertor is available today in volume from TI and its authorised distributors.
Volume production for the TPS60230 is scheduled for the end of the second quarter.
The TPS65130 comes in a 24-pin, 4 x 4mm QFN package, and the TPS60230 comes in a 3 x 3mm QFN package.
Suggested resale pricing in quantities of 1000 is $2.95 for the TPS65130, and $1.55 for the TPS60230.
Evaluation modules, application notes and TI's new VIP power management selection tool are available through power.ti.com.
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