Fairchild Semiconductor's RF Power DC-DC Converter Provides Industry's Smallest Power Management Solution for W-CDMA/CDMA RFPAs in 3G Handsets

Duration: 3 min 25sec

 

The FAN5902, RF Power DC-to-DC converter is the industry’s smallest power management solution for the designers of 3G handsets, helping to extend talk-time by up to 40 minutes by adapting the voltage supply level of the 3G RF power amplifier.

News Highlights

• Packaged in a 12 bump, 0.5mm pitch CSP package and operates at 6MHz with a reduced size 0.5uH chip inductor, saving space and component costs
• Extends talk-time by up to 40 minutes in 3G handsets by adapting the voltage supply level of the 3G RF power amplifier according to the RF power sent through the antennae
• Enables higher power efficiency for a wide range of antenna power levels, resulting in up to 100mA of battery current consumption savings
• Addresses the key problem of overheating in the RF power amplifier, especially at high battery voltage by scaling down the RFPA supply voltage, reducing its heating by 20 to 40 percent
• Part of an wide range of solutions for mobile designs answering the compelling design challenges of increasing efficiency, reducing board space, preserving signal fidelity and simplifying design.

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