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Freescale RF power transistor cuts operating expenses

Posted: 26 Apr 2005 ?? ?Print Version ?Bookmark and Share

Keywords:freescale semiconductor? freescale? mrf6p3300h? transistor?

Freescale Semiconductor disclosed that it is addressing the broadcast industry's requests for ways to cut power and operating expenses with the release of a highly efficient RF power transistor, which is designed to reduce transmitter power consumption and operating costs for digital and analog television broadcast applications.

According to the press release, the MRF6P3300H transistor leverages the company's sixth-generation, high-voltage (HV6) laterally diffused metal oxide semiconductor (LDMOS) technology. It delivers outstanding RF performance while enhancing the operating efficiency and reliability of power amplifiers and transmitters, the company added.

Due to its high output power, the 300W MRF6P3300H device allows power amplifier manufacturers to reduce system-level costs because fewer RF transistors are needed to achieve a given power target. Fewer transistors enable more compact power amplifier designs, lower heat dissipation and a reduction in cooling requirements, explained Freescale.

"We designed the MRF6P3300H to be the most efficient RF power transistor in the broadcast marketplace," commented Gavin Woods, GM of Freescale's RF Division. "The exceptional operating efficiency of the MRF6P3300H gives power amplifier and transmitter manufacturers a competitive advantage. It can also enable TV broadcasters to realize considerable savings in operating expenses over the life of the equipment."

Save $5,200 in your annual operating costs

By using smaller, highly efficient MRF6P3300H based power amplifiers, broadcasters can reduce their long-term operating costs. According to the company's analysis of a typical 5kW digital television base station, a power amplifier with multiple MRF6P3300H devices can help reduce annual operating costs by up to $5,200. This estimated savings is based on the Freescale device's exceptional operating efficiency and low thermal resistance, which reduces cooling costs.

The MRF6P3300H features Freescale's Low Rth packaging technology for superior heat transmission within power amplifier and transmitter applications. This packaging technology is engineered to dissipate heat through a specially-designed, low-thermal-resistance flange that accelerates the flow of heat away from the device to a heat sink or other cooling system. Efficient heat dissipation allows the transistor to operate at lower temperatures, which increases reliability and operating life.

The MRF6P3300H uses an industry-standard case outline that provides a simple, drop-in replacement for existing mechanical outlines. With this approach, RF amplifier manufacturers can standardize their high-density board designs, save board real estate and reduce system-level costs. Accommodating larger, non-standard case sizes requires board redesign or retooling, which adds to the cost and mechanical complexity of power amplifiers.

The new RF transistor accommodates both digital and analog broadcast standards in the 470MHz to 860MHz range, using a 32V power source common in TV transmitters. It delivers 57.5 percent efficiency and 19dB power gain when operating at 860MHz and at 300W CW.

The MRF6P3300H RF transistor is already available for sampling, with production planned for late Q2.

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