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Intersil Intros New Buck Regulators
Synchronous buck regulators.
Milpitas, CA — Intersil Corporation (NASDAQ: ISIL) has unveiled the ISL85003 and ISL85003A 3 Amp synchronous buck regulators with integrated high-side and low-side MOSFETs. The new ISL85003/3A buck regulators support an input voltage range of 4.5 to 18V while delivering very efficient and continuous 3A current. The regulators are especially suitable for the latest generation of FPGAs from leading manufacturers for high-end server, network communication and industrial process control applications. The new buck regulators are said to be the most efficient regulators of their kind, reducing power loss, eliminating the need for fans or other cooling systems, improving reliability and extending the life of end products. The units are designed to deliver a very low resistance in a triode region RDS(ON) with an optimized current mode controller to further improve efficiency and reduce die temperatures, keeping complex systems cooler and preventing product failures.

Many 12V infrastructure and industrial applications need a buck regulator solution to step the system voltage down to 3.3V and lower while delivering a continuous 3A current. These applications require a high level of reliability and low power loss to extend product life and reduce risk of system failure. Existing 3A solutions have failed to meet the needs of these applications because they frequently hit their temperature limits, thus reducing power management efficiency and product reliability.

Intersil specifically designed the new 3A synchronous buck regulators to operate at and enable the highest efficiency, making systems more robust with consistent and reliable performance. Based on a proprietary high-performance power FET, the high-side FET runs at 65mL and the low-side RDS(ON) runs at 45mL. This makes the devices the lowest RDS(ON) buck regulator solutions in the market place with up to 95 percent efficiency. Greater efficiency translates to lower die temperatures, keeping the system cooler and reducing reliance on fans or other outside cooling systems. The highly efficient FETs also enable the ISL85003/3A buck regulators to work in applications that do not have expensive cooling systems. The buck regulators offer a light-load mode that allows systems to go into sleep mode when power requirements drop, effectively consuming less power. Many applications are reducing overall power consumption due to governmental regulations worldwide. As a result, companies are redesigning their products to meet these aggressive new requirements. In particular, the industrial market has seen a wave of new power efficient products that utilize energy-saving design techniques such as sleep mode. These products range from high-end server and programmable logic controllers (PLCs) to smart home and smart factory applications that require an extended battery charge. In many cases, the microcontroller or FPGAs are put into sleep mode during down time. For applications in which the load can vary from full operation to low power state, having a light load mode feature improves the overall system efficiency. In applications that do not require light load mode, designers can easily disable the feature, reducing the switching frequencies and simplifying design.


Contact: Intersil, 1001 Murphy Ranch Road, Milpitas, CA 95035 888-468-3774 or 408-432-8888 fax: 408-434-5351 Web:
http://www.intersil.com

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