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Step-down DC/DC converter is ultrathin

Posted: 20 Aug 2008 ?? ?Print Version ?Bookmark and Share

Keywords:step-down DC/DC converter? ultrathin power converter? power management IC?

TI's TPS62601

Giving portable designers the ability to add more features and functions on a handheld device, Texas Instruments Inc. has released what it claims to be the industry's smallest and thinnest 500mA, step-down DC/DC converter solution for space-constrained applications. The high-efficiency power management IC is said to be the first 6MHz, 500mA converter to achieve a 13mm? solution size with an ultrathin 0.6mm total height.

Leveraging TI's analog manufacturing technology, the TPS62601 converter achieves up to 89 percent power efficiency and only 30?A typical operating quiescent currentall from a 0.9mm x 1.3mm chip scale package roughly the size of a flake of pepper. The synchronous, switch-mode device's fixed frequency of 6MHz allows the use of only one 0.47?H inductor with a height of 0.6mm and two low-cost ceramic capacitors, without compromising performance and efficiency.

"Portable system designers continue to desire more features on their devices, which require smaller, efficient DC/DC converters to maintain long battery life and system runtimes," said Steve Anderson, senior VP of power management, TI. "The TPS62601 gives portable designers access to the smallest, thinnest 500mA DC/DC solution, which simplifies design and reduces board space and time-to-market."

The TPS62601 can deliver DC voltage regulation accuracy of 1.5 percent.

In addition, the device's excellent load transient response, wide input voltage range of 2.3V to 5.5V and 1.8V of output allows it to support single-rail voltage requirements as designers add new features and functionality. The TPS62601 supports many applications, such as memory modules, GPS modules, Bluetooth and Wi-Fi modules or other wireless micro-modules used in ultrathin smartphones, digital still cameras, portable disk drives and media players.

The converter also applies energy-saving techniques to help maximize battery runtime. For example, the converter automatically enters a power save mode during light-load operating conditions via an automatic pulse frequency modulation and pulse width modulation switching feature. In shutdown mode, the device's current consumption is reduced to less than 1?A.

The TPS62601 is available today in volume. The device comes in a six-pin, wafer chip scale (0.9mm x 1.3mm) package and has a suggested retail price of $1.45 each in quantities of 1,000. The TPS62601EVM-327 evaluation module, application notes and TI's online Power Management selection tools are available at

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