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August 24, 2012

Toshiba's New High-Frequency Power Detection IC Means Longer Battery Life for Mobile Phones

Toshiba has always been at the forefront of market-leading designs. The new high-frequency power detection IC for mobile phones, recently introduced, is no exception to Toshiba’s product breakthroughs.

The IC uses Root Mean Square (RMS) detection for transmission power control.

A key concern in today’s mobile devices is the battery life, and the small circuit of the new IC chip enables it to operate at high efficiency for power amplifiers. By using only a coupling and a bypass capacitor, Toshiba was able to design a small package that consumes less power, making it highly efficient for mobile devices.

The increase in data communication demands and the high level of accuracy required for transmission signals is also another area where the IC does pretty well. The IC can extract a high-accuracy detection voltage from complex transmission signals, common on 3G and 4G phones. The IC can be used on public addresses power controls as well. 

The circuit design offers greater flexibility to circuit designers, which is also becoming highly important at a time when multiple bands use and complex transmission signals are in greater use.

According to Talayeh Saderi, business development engineer for Toshiba America Electronic Components, Inc. (TAEC), it has become a consumer expectation for mobile phones to have a long battery life – a pressing issue in mobile design. Saderi noted that the power amplifier power consumption is the greatest obstacle in having a longer battery life.

By having control of this part of the circuit, Toshiba was able to develop a highly efficient IC.

Some of the features of the new IC include: a single power operation between 2.5 to 3.3 V, lower power consumption of only 0.95mW, and the IC’s suitability for UMTS, CDMA, WCDMA and LTE mobile phone technologies.

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Edited by Braden Becker

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