Product category: Power Supply ICs and Controllers
News Release from: Texas Instruments (April 2001-March 2006) | Subject: TPS62110
Edited by the Electronicstalk Editorial Team on 27 July 2005
Step-down convertor handles wide-ranging inputs
A new 1.5A DC/DC step-down convertor supports input voltages from 3.1 to 17V for devices powered by two- to three-cell lithium-based batteries or a 12V power source
Texas Instruments has released a 1.5A DC/DC step-down convertor that supports input voltages from 3.1 to 17V. The small IC achieves 95% power efficiency to extend battery life in industrial handhelds, portable test equipment and consumer devices powered by two- to three-cell lithium-based batteries or a 12V power source.
This article was originally published on Electronicstalk on 27 July 2005 at 8.00am (UK)
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TI's new TPS62110 synchronous, step-down convertor with integrated FETs delivers unprecedented levels of power conversion efficiency and performance in a lead-free, 4 x 4mm QFN package.
The device is able to maintain high efficiency over a wide load current range by entering a power-saving pulse-frequency modulation (PFM) mode at light load currents and supporting output voltages from 16 to 1.2V.
The convertor can be placed in a shut down mode, reducing power consumption to less than 2uA.
The convertor's 1MHz switching frequency allows portable device designers to reduce board space by applying smaller external components without compromising performance and efficiency.
The TPS62110 can be synchronised to an external clock signal between 0.8 and 1.4MHz.
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For even lower noise operation, the convertor can operate in a pulsewidth modulation (PWM) only mode.
The TPS62110 is based on TI's new LBC7 high-performance analogue process.
The advanced CMOS process allows the company to create power conversion ICs with the industry's lowest specific on-resistance, and the capability for future devices to handle 30V supply voltages.
TI will leverage the new process to offer integrated DC/DC buck and boost convertors with significantly faster switching speeds and increased logic density of more than 22,000 gates per square millimetre.
TI complements the TPS62110 with its new DC/DC boost inverter in a 3 x 3mm QFN package, the TPS63700.
The inverter provides an 800mA typical switch current limit and converts an input of 2.7 to 5.5V to an output voltage as low as -15V.
Coupling the device with a small 4.7uH inductor results in the industry's smallest inverting DC/DC footprint.
The TPS63700 is ideal for precision amplifiers and data convertors used in industrial applications that require both positive and negative power supply voltages, such as TI's OPA277 or ADS8342 devices.
The inverter's small size and capabilities also allow it to support portable liquid crystal displays, charge coupled devices (CCDs) and organic LED (OLED) displays used in 3G smartphones or PDAs.
The TPS6211x family of convertors is available today in volume from TI and its authorised distributors.
The TPS6211x DC/DC convertors come in a highly reliable, 16-pin, QFN package, and are priced at $2.50 each in quantities of 1000 units.
The TPS63700 inverter is currently sampling with volume production expected in September.
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