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Chip extends battery life in multimedia devices

Posted: 10 Apr 2006 ?? ?Print Version ?Bookmark and Share

Keywords:TPS63000? DC/DC converter? power management? Texas Instruments?

Texas Instruments Inc. (TI) announced a buck-boost power management IC that helps extend battery life in smart phones, digital still cameras and other single-cell, Li-ion-powered multimedia devices. The DC/DC converter delivers up to 96 percent efficiency over an input voltage range of 1.8V to 5.5V, while generating an output current up to 1.2A.

According to TI, the new TPS63000 buck-boost converter provides up to 28 percent greater run-time compared to a standard high-efficiency buck converter with a 3.3V output. Based on a fixed frequency, pulse-width modulation technique, the device is said to use synchronous rectification to maintain efficiency to support single-cell Li-ion batteries.

The device delivers step-up and step-down DC/DC conversion with adjustable output voltages down to 1.2V, and offers a quiescent current of less than 30A.. The TPS63000 enters a power save mode at low power operation, which can be disabled, forcing the converter to operate at a fixed switching frequency. The converter also can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery.

The TPS63000, which comes in a tiny 3-by-3mm, 10-pin QFN PowerPAD package, operates in a fixed frequency of 1.5MHz that is said to allow the implementation of a 2.2H inductor.

The TPS63000 is available in volume production. Suggested retail pricing is $2.75 in 1,000-piece quantities.

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Related Datasheets
Part Number Description Category
? TPS63000 High Efficient Single Inductor Buck-Boost Converter with 1.8-A Switch (Rev. A) ICs, Interface



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