News & Events
Intersil Announces New Space and Cost Saving Power Driver + MOSFETs Combo IC
IRVINE, CA, August 28, 2002 Intersil Corporation (NASDAQ: ISIL), a world leader in the design and manufacture of high performance analog and wireless networking solutions, today announced the new Endura ISL6571 SynchroFET IC, a driver combined with two MOSFETs in a power-efficient Quad Flatpack No-lead (QFN) package significantly saving board space, simplifying architecture and reducing the total bill of materials (BOM).
The ISL6571 replaces todays discrete power delivery solutions that usually challenge designers because of high switching frequencies and increased power requirements. High-current path inductance, ringing, component stress and EMI often thwart the design. Circuit board layout and particularly the MOSFET gate drive path are of critical concern. Careful selection of the switching and synchronous MOSFET parameters is of paramount importance. This Endura SynchroFET solves these problems because the complementary MOSFET driver, synchronous half-bridge switch and Schottky diode are integrated into a small yet thermally efficient 68-lead 10 X 10 mm QFN package. This virtually eliminates the problems associated with poor power stage component layout and selection of sub-optimal MOSFETs.
The ISL6571 is optimized to work with Intersil's synchronous multiphase PWM buck controllers, such as the HIP630X series and ISL65XX series products. The Intersil power control and stage chipset enables compact and highly efficient low-voltage DC/DC buck converters powering CPUs and power-hungry ASICs. The high packaging density of the ISL6571 driver/MOSFET combination reduces the layout parasitics, and enables the DC/DC converter to operate at frequencies up to 1MHz/phase, thus dramatically reducing the overall printed circuit board area.
In addition to saving space, the new ISL6571 requires fewer external components and provides accurate current sensing, adaptive MOSFET switch non-overlap time, accurate temperature feedback, increased power density, and makes it possible to place the power train closer to the load. Complete reference designs, evaluation boards (ISL6571EVAL1) and circuit layouts are available to support customers and reduce time-to-market. More information about the ISL6571 and other high-performance power management ICs can be obtained from Intersils Web site at: http://www.intersil.com/design/powermanagement/index.asp
ISL6571 Technical Details
- Improved performance over conventional synchronous buck converters using discrete components
- Optimal dead time provided by adaptive shoot-through optimal efficiency and system protection
- Fast switching frequency up to 1 MHz
- 30 ns propagation delay supports high operating frequency
- High-bandwidth provides fast transient response
- Up to 25 A upper and lower MOSFETs
- Reduced interconnection parasitics that otherwise exist between discrete components
- Low electromagnetic emissions
- Low thermal impedance packaging
- Small board area and high power density
- Internal bootstrap diode
- Low bill of material costs
- Three-state input for output stage shutdown offering system protection
- Supply under-voltage protection
The ISL6571 is currently available. The ISL6571CR in the 68-pad QFN package is priced at $2.00 each in quantities of 4999 to 9999 units. Other quantity pricing is available upon request. The ISL6571CR-T is available on tape and reel.
Intersil + Elantec Means More for Our Customers
Intersil Corporation is a global semiconductor leader in the design and manufacture of high performance analog and wireless networking solutions. The acquisition of Elantec Semiconductor, Inc., expanded Intersils product portfolios to address four fast growing markets flat panel displays, optical storage (CD and DVD recordable), power management and wireless networking. Intersil brings added customer value in providing complete silicon, software and reference design solutions to new products that enhance the computing experience for people wherever they live, work or travel. For more information about Intersil or to find out how to become a member of our winning team, visit the company's web site and career page at: www.intersil.com Endura and SynchroFET are trademarks of Intersil Americas Inc.
All other trademarks mentioned are the property of their respective owners.
