Semtech Introduces Industry's First Universal Power Management Chipset for High Performance Desktop Microprocessors; Creates Intel-AMD Nexus for Motherboard Industry

Semtech Corp. (Nasdaq: SMTC), a leading supplier of analog and mixed-signal semiconductors for communications, portable devices, computers, and industrial equipment, today introduced a revolutionary Vcore power chipset, the industry's first power supply conversion solution capable of powering both Intel's® and AMD's™ most advanced microprocessors.  This chipset represents the first product in a new line of configurable Vcore power solutions incorporating Semtech's patented Combi-Sense™ topology.

The new configurable Vcore power chipset enables PC motherboard designers and manufacturers to standardize on a single power solution for any microprocessor designed to Intel's 10.X VRD (VR down on board) and 9.X VRM (voltage regulator module) specifications or AMD's K8 or K7 specifications.  In addition to streamlining procurement and reducing inventory exposure, the chipset can accelerate board development cycles by reducing the number of required components, simplifying designs, and decreasing layout sensitivity.

Semtech's chipset comprises the highly accurate and feature-rich SC2643VX scalable, multiphase DC-to-DC controller and the SC1211 high-speed MOSFET driver.  Present and future applications include motherboards designed around the Intel® Springdale platforms using Northwood and Prescott processors; the AMD-K7™ architecture (Duron™ and Athlon™ processors); and the AMD-K8™ Hammer architecture (Opteron™ processor).

The SC2643VX+SC1211 chipset converts a 12V main supply into highly accurate core supply voltages required by next-generation desktop microprocessors.  The new chipset provides on-the-fly processor voltage identification (VID) code sensing, setting Vcore output voltages automatically.  Output-signal phase relationships are programmable for 2-, 3-, or 4-phase operation, providing engineers with the flexibility to make optimal cost versus performance decisions in their designs.

The new chipset utilizes Combi-Sense™ peak current-mode topology to provide loss-less current sharing and stable operation over all load conditions.  Multi-mode over-current protection, superior transient response, noise immunity, and over-current protection in the SC1211 ensure high reliability.  The SC2643VX controller's integrated 6-bit DAC (digital-to-analog converter) provides output voltages in 12.5mV steps with a 0.5% precision set-point accuracy, to meet VRM 10.X voltage specifications.

"The availability of this single, configurable Vcore power solution builds on Semtech's leadership position in multiphase power management," says Ken Boyden, director of desktop power management products at Semtech.  "Designers and managers alike will appreciate the chipset's high performance as well as the significant cost benefits of its design flexibility and versatility."

Key Features of the SC2643VX+SC1211 Chipset

• Versatility across Intel and AMD microprocessor platforms
• Two-, three- or four-phase scalability to accommodate various processor power requirements
• Minimal component count and layout sensitivity reduces design cycle time
• 12V operation for desktop PC platforms
• 12.5mV programmability with ±0.5% precision set-point accuracy
• Combi-Sense™ current-mode control for improved noise immunity
• Phase-current matching for high precision
• Active droop for best transient response
• Cycle-by-cycle current limiting for fast transient response
• Supports on-the-fly VID code changes

Availability

The SC2643VX+SC1211 chipset is rated for commercial temperature range applications (0 to 85 degrees C). The SC2643VX is available in 24-pin SOIC or 24-pin TSSOP packages, while the SC1211 MOSFET drivers come in SO-8 packages. Samples are available now, with production quantities available in December 2002.  Datasheets and pricing information can be requested by contacting salesinfo@semtech.com.

About Semtech

Semtech Corporation is a leading supplier of high-quality analog and mixed-signal semiconductor products.  The company is dedicated to providing customers with proprietary solutions and breakthrough technology in power management, protection, advanced communications, human interface devices, and high-speed test and clock/logic products.  For additional information on the company and its products, contact Semtech Corp. at 200 Flynn Road, Camarillo, CA. 93012-8790; phone (805) 498-2111; email to info@semtech.com; or visit its Web site at www.semtech.com.

Semtech, the Semtech logo and Combi-Sense are marks of Semtech Corporation. Intel is a registered mark of Intel Corporation in the U.S. and other countries. AMD, Duron, Athlon, Operton and all combinations thereof, are marks of Advanced Micro Devices, Inc.