Leveraging TI’s analogue manufacturing technology, the new TPS62601 converter achieves up to 89-per cent power efficiency and 30-uA typical operating quiescent current -– all from a 0.9 mm x 1.3 mm chip scale package roughly the size of a flake of pepper. The synchronous, switch-mode device’s fixed frequency of 6 MHz allows the use of only one 0.47 uH inductor with a height of 0.6 mm and two low-cost ceramic capacitors.
“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 run-times,” said Ramprasad Ananthaswamy, director, power management products, Texas Instruments India. “TPS62601 gives portable designers access to the smallest, thinnest 500 mA DC/DC solution, which simplifies design and reduces board space and time-to-market.”
The TPS62601 converter can deliver DC voltage regulation accuracy of +/- 1.5 per cent. In addition, the device’s load transient response, wide input voltage range of 2.3 V to 5.5 V and
1.8 V of output allows it to support single-rail voltage requirements as designers add new features and functionality.
TPS62601 supports many applications, such as memory modules, GPS modules, Bluetooth and Wi-Fi modules or other wireless micro-modules used in ultra-thin smart phones, digital still cameras, portable disk drives and media players.
The converter also applies energy-saving techniques to help maximise battery run-time. 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 uA. |
