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March - 2015 - issue > 20 Most Promising Semiconductor Companies 2015

R2 Semiconductor: Semiconductor Innovations for Better Power Management

SI Team
Thursday, March 5, 2015
SI Team
"Today, mobiles are not just the devices to make calls. They have turned 'smarter' loaded with exciting features from the ability to access high speed internet to taking full HD videos," remarks Ravi Ramachandran, Senior Staff Scientist and Co-founder, R2 Semiconductor. However this technology leap in
mobiles has not happened in the case of batteries that power them.

Limited by its size to power ratio, these batteries require higher levels
of power optimization to achieve an optimal performance to address extreme requirements of today's mobile devices. R2 Semiconductor, a Sunnyvale, CA based company addresses this issue through its efficient power management chips.
As mobiles perform multiple operations from calls to internet access, the set of internal components' processors and transmitters and amplifiers' consume large amounts of power. R2 Semiconductor has developed a novel chip architecture called Fast Power which tweaks the power supply of the mobile's multicore processors and communication amplifiers depending on the
instantaneous workloads they are handling.

R2 bases all of its semiconductor offerings based on Fast Power.The company's offering R2 Envelope Tracking (ET), dynamically adjusts the power supply voltage applied to Radio Frequency (RF) Power Amplifiers (PA) to improve efficiency and reduce heat. For instance, 3G and 4G cellular mobiles operate on high frequencies (700-2500MHz) which drains the battery life."R2's ET saves about 35 percent of power consumption by managing the instantaneous power
supply of the RF Power Amplifiers," says Ramachandran. The company offers the FastTrack ET Modulator which simplifies ET implementation and adoption in the mobile devices.

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