Achieving up to 95% efficiency, the 1A TPS63050 and 4A TPS630250 buck-boost regulators have been launched by Texas Instruments. Providing 95% effciency in half the solution size when compared to competing products, the company claims that the single-inductor devices are the industry’s smallest and highest performance buck-boost regulators currently on the market. The devices have been designed to extend battery life in Li-Ion battery-powered designs ranging from portable medical devices to point-of-sale terminals.
The TPS630250 converter with 4A switches supports a wide input voltage range of 2.3V to 5.5V and can discharge lithium batteries down to 2.5V or lower, while maintaining excellent light load efficiency and a quiescent current of 35uA. The 2.5MHz device can achieve a complete DC/DC buck-boost solution of 33mm2 -less than half the size achieved with existing 4A products.
Features and benefits of TPS630250:
• Highest efficiency: Achieves up to 95 percent power efficiency and a high-output current capability to generate the most current with the greatest amount of efficiency. For example, it can achieve 3 A at 3.3V out in step-down mode and more than 2A at 3.3V out in boost mode.
• Light-load power savings: Power Save Mode maintains high efficiency over the complete load current range. And the new buck-boost converter delivers the industry’s lowest quiescent current of 35uA.
• Smallest, thinnest solution size: 2.5-MHz converter in a 1.766mm x 2.086mm by 0.5mm CSP package achieves a solution size of 33mm2.
TI also offers switch-mode battery chargers, including the new bq24192 4.5-A single-cell USB/adapter chargers that allow portable electronics to charge faster and at the highest power conversion efficiency.
The TPS63050 and TPS630250 converters and the bq24192 charger are available now in volume production through TI and its worldwide network of authorized distributors. The TPS63050 comes in a small 1.726-mm by 1.326-mm, 12-pin CSP package at a suggested resale price of US$0.91 in 1,000-unit quantities. The TPS630250 comes in a 20-pin CSP package measuring 1.766mm x 2.086mm for US$1.75 each in 1,000-unit quantities. The bq24192 battery charger IC comes in a 24-pin, 4-mm by 4-mm QFN at US$2.50 each in 1,000-unit quantities.