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New Products
February 20, 2009
Primarion Introduces Small Integrated Power Stage (iPS™) For Point-of-Load Applications
Primarion, an Infineon Technologies subsidiary, introduced the PX4650 and PX4640, which the company states has the industry’s smallest integrated power stage (iPS™) and offers superior performance for high power density solutions required by servers, storage equipment and routers.
Primarion’s PX4650 and PX4640 accommodate current industry demands for higher power density in space constrained applications and integrated modules by minimizing the number of external components. The new power stage integrates low RDSon N-Channel MOSFETs for both high and low side FETs together with high and low side MOSFET drivers. Full integration of drivers and FETs minimizes switching losses.
"Efficiency has become a key industry driver in the computing and data storage industry," said Deepak Savadatti, Vice President of Marketing at Primarion. "With Primarion iPS, the inherent low RDSon that improves on mid- to full-load efficiency and along with low switching losses that benefit light load efficiency, are the key advantages differentiating our product in the market. The overall performance of iPS-based solutions offers high efficiency across the entire operating range."
When combined with Primarion’s digital multiphase or Di-POL™ controllers, PX4650 and PX4640 offer a complete high current small form factor voltage regulation solution that supports an average output current of up to 50A in 24mm² (per phase) surface area with superior system efficiency, high output voltage accuracy, fast transient response and extensive protection features. With such capability, Primarion is able to provide the industry with the highest density Vcore and memory power solutions that achieve 92 to 94% efficiency.
Both PX4650 and PX4640 contain a number of self-protection features. Primarion’s integrated pulse-by-pulse peak current limit provides instantaneous response to any over-current conditions. The PX4650 and PX4640 also have integrated temperature sensors that provide on-die measurement of FETs’ junction temperatures. When used with Primarion controllers, this feature provides accurate and programmable over-temperature protection.
Opinion: Unraveling the Ultra-Low Power Design Issues
Design benefits of the PX4650 and PX4640 include: a standard footprint that offers scalability and ease of PCB layout; flexible and simplified design that achieves reliable performance; reduced board space and fewer component count which lower the solution cost; low RDSon that yields higher efficiency; process and temperature independent current sensor that provides accurate over current protection; and a 20-lead QFN package which offers small footprint with ease of manufacturability. All these features are ready to meet manufacturers’ needs for the highest power density in the industry.
Primarion’s PX4650 and PX4640 are now available for general sampling.
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