News & Events
Intersil Announces Versatile 3-in-1 Controller that Delivers High Efficiency Precision Voltage Regulation

-- ISL6534 is designed to provide power regulation for DDR memory and a variety of other system electronics

MILPITAS, CA, February 7, 2005 – Intersil Corporation (NASDAQ: ISIL), a world leader in the design and manufacture of high performance analog solutions, announced today the ISL6534, a high efficiency, cost competitive, 3-in-1 PWM solution for providing two synchronous buck voltage outputs and a linear controller output. The device powers next generation Double Data Rate (DDR) memory supplies for servers, motherboards, I/Os, FPGAs, and embedded processors, as well as, graphic cards and other system electronics.

This versatile triple regulator that has two independent synchronous-rectified buck controllers with integrated 12V gate drivers and a linear controller, provides precision regulation of up to three voltage rails. Each output has an internal 0.8 percent accurate reference for regulating any voltage down to as low as 0.6V. An optional shunt regulator allows 12V-only operation, when a 5V supply is not available. When configured in DDR mode, the ISL6534 offers a low cost bill-of-materials solution for powering DDR memory by including Vddq to Vtt tracking, and a VREF buffered output, as well as, an additional linear output.

Each controller has independent soft-start and enable functions. The three soft-start enable pins can be controlled independently or they can be tied together to provide complete control of start-up coordination. The PGOOD function indicates when all regulators have completed their soft start and provides an indication of short circuit conditions on either switching regulator. The IC also has an integrated phase lock loop device that allows for bi-directional frequency synchronization for synchronizing multiple ISL6534s or various other controllers.

ISL6534 Features

• Two synchronous-rectified buck controllers
  • Voltage mode control
  • VIN range up to 12V
  • VOUT range from 0.6 V to 6V
• Switcher references
  • 0.6V reference for OUT1 (0.8 percent accurate)
  • 3.3V reference output for OUT2 (0.8 percent accurate)
  • External reference input for OUT2
  • Buffered VTT reference output
• Switcher clocking
  • Phase options for optimal clock relationship
  • Resistor-selectable switching frequency (300 kHz default)
• Single linear controller
  • Drives N-channel MOSFET
  • 0.6V reference (0.8 percent accurate)
  • VIN range up to 12V
  • VOUT range from 0.6V to 6V
• PGOOD output indicates all outputs available

Target markets:

• Single and dual channel DDR memory power systems
• Graphics cards - GPU and memory supplies
• Server and motherboard supplies
• FPGA and ASIC power supplies
• Embedded processor and I/O supplies
• DSP supplies

Availability and Pricing
The ISL6534 is available now in standard lead finish and Pb-free, and either a 32-lead thermally-enhanced 5 mm X 5 mm QFN package or a 24-lead exposed pad TSSOP package. The suggested price in 10,000 unit quantities is $1.50 for each IC. Additional information on these and other high-performance power solutions can be obtained online from Intersil’s Power web site at: http://www.intersil.com/power/

Learn more about Intersil’s complete family of Power Management solutions for Intel’s VR10.0 platforms, peripheral power solutions (DDR, Graphics, ACPI) and digital multiphase solutions. Visit Intersil at booth #432 at the Intel Developers Forum, March 1-3 in San Francisco. About Intersil
Intersil Corporation, a NASDAQ 100 Index company, is a leader in the design and manufacture of high performance analog semiconductors. The company’s products address three of the industry’s fastest growing markets: flat panel displays, optical storage (CD and DVD recordable) and power management. Intersil products include power management devices for battery management, hot-swap and hot-plug controllers, linear regulators, supervisory ICs, switching DC / DC regulators and power MOSFET drivers; optical storage laser diode drivers; DSL line drivers; video and high performance operational amplifiers; data converters; interface ICs; analog switches and multiplexers; crosspoint switches; voice-over-IP devices; and ICs for military, space and rad-hard applications. 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.

This release may include "forward looking statements" that are subject to risks and uncertainties. For information identifying economic, political, climatic, currency, regulatory, technological, competitive and some other important factors that could cause actual results to differ materially from those anticipated in the forward looking statements, see Intersil’s Safe Harbor Forward Looking Statement disclaimer found at http://www.intersil.com/legal.asp, as well as Intersil’s SEC filings as updated from time to time, found at http://www.sec.gov. All trademarks mentioned are the property of their respective owners.