feature article
Subscribe Now

Open-Silicon And Virage Logic Partner To Deliver Silicon Proven IP For SoC Design

MILPITAS, and FREMONT, Calif. – February 17, 2010 – Open-Silicon, Inc. <http://www.open-silicon.com> , a leading ASIC design and semiconductor manufacturing company, and Virage Logic <http://www.viragelogic.com/index_en.asp> (NASDAQ: VIRL), the semiconductor industry’s trusted IP partner, today announced a partnership agreement to provide customers with comprehensive design solutions including access to Virage Logic’s extensive Physical and advanced Interface intellectual property (IP) portfolio. In particular, as more and more customers develop energy efficient devices, Virage Logic’s low power IP combined with Open-Silicon’s lower power design technology enable the development of significantly lower power silicon.

“This partnership underscores our continued commitment to meet our customers’ needs for lower power, managed variability, and faster time-to-market,” said Dr. Naveed Sherwani, CEO and president of Open-Silicon. “We selected Virage Logic as our trusted IP partner because of their proven track record in providing a broad portfolio of highly differentiated IP. This offering, paired with Open-Silicon’s OpenMODEL™ proven integration capability, allows customers to achieve very high levels of performance while reducing overall system power.”

The partnership presents a well-aligned technology offering. Virage Logic, a leader in low power semiconductor IP technology, uses several advanced power management features within the SiWare™ Memory compilers and SiWare™ Logic libraries that enable customers to dramatically reduce leakage current while maximizing performance. Open-Silicon’s VariMAX back biasing technology similarly works with Virage Logic’s tapless SiWare Logic standard cell libraries to reduce leakage for the IC’s logic. By changing the amount of bias used on individual chips, VariMAX effectively tunes the silicon for optimum power and thereby boosts production yields. This latest collaboration builds on a recently announced co-developed test chip with working silicon running at 1.1GHz that was achieved using Open-Silicon’s patented CoreMAXTM performance enhancement technology and Virage Logic’s advanced SiWare Memory compilers.

“As power management and efficiency are becoming increasingly critical in a multiplicity of products and technologies, our collaboration with Open-Silicon underscores how we are working with our design ecosystem partners to help SoC designers address these challenges,” said Dr. Alex Shubat, president and CEO of Virage Logic. “Open-Silicon’s MAX Technologies working in conjunction with Virage Logic’s extensive semiconductor IP portfolio enables our mutual customers to address a broad range of SoC design requirements.”

About Virage Logic’s SiWare Memory and SiWare Logic Products

The SiWare product line, first introduced in October 2007 for the 65-nanometer(nm) process and now in use by more than 20 customers on the 40nm process, has been proven to address the increasingly complex design requirements that are placed on physical IP at advanced processes. The power-optimized memories for advanced processes minimize both static and dynamic power consumption and provide optimal yields. SiWare High-Density memory compilers are optimized to generate memories with the absolute minimum area. SiWare High-Speed memory compilers are designed to help designers achieve the most aggressive critical path requirements. Compile-time options for process threshold variants, power saving modes, read and write margin extensions, ultra-low voltage operation, and innovative design for at-speed test enable SoC designers to configure optimal solutions for their specific design requirements.

All SiWare Memory compilers are fully supported by Virage Logic’s STAR™ Memory System, the company’s flagship embedded memory test and repair system that may be used with Virage Logic memories as well as with other commercially available or internally developed memories. For repair purposes, the STAR Memory System deploys foundry-developed eFuse for repair signature storage. The STAR Memory System employs test algorithms tailored for advanced processes for higher product reliability and accelerated time-to-yield.

The SiWare Logic product line includes yield-optimized standard cells for a wide variety of design applications at 40nm with multiple threshold process variants. SiWare Logic libraries offer three separate architectures to optimize circuits for Ultra-High-Density, High-Speed, or general use. SiWare Logic Ultra-Low-Power extension libraries also provide designers with the most advanced power management capabilities.

About Virage Logic

Virage Logic is a leading provider of semiconductor intellectual property (IP) for the design of complex integrated circuits. The company’s highly differentiated product portfolio includes processor solutions, interface IP solutions, embedded SRAMs and NVMs, embedded test and yield optimization solutions, logic libraries, and memory development software. As the industry’s trusted semiconductor IP partner, more than 400 foundry, IDM and fabless customers rely on Virage Logic to achieve higher performance, lower power, higher density and optimal yield, as well as shorten time-to-market and time-to-volume. For further information, visit http://www.viragelogic.com.

About Open-Silicon, Inc.

Open-Silicon, Inc. is a leading semiconductor company focused on SoC realization for traditional ASIC, develop-to-spec, and derivative ICs. Open-Silicon’s OpenModel brings together Open-Silicon’s engineering technology and high-quality manufacturing services with one of the broadest partner ecosystems for IC development, spanning IC design, open market IP integration, wafer fabrication, and assembly/test services. Open-Silicon received the Global Semiconductor Alliance (GSA) award http://www.gsaglobal.org/awardsdinner/2009/awards.asp for Most Respected Private Semiconductor Company in 2008 and 2009. For more information, visit Open-Silicon’s website at www.open-silicon.com or call 408-240-5700.

Leave a Reply

Dual Output, Multiphase Step-Down DC/DC Controller Operates with Power Blocks & DrMOS Devices

MILPITAS, CA – February 17, 2010 – Linear Technology Corporation introduces the LTC3860, a dual output synchronous step-down DC/DC controller with multiphase operation, differential output voltage sensing and high frequency operation. This controller works in conjunction with external power train devices such as Power Blocks and DrMOS, as well as discrete N-channel MOSFETs and associated gate drivers, enabling flexible design configurations. Up to 12 phases can be paralleled and clocked out-of-phase to minimize input and output filtering for very high current requirements (up to 300A). Applications include high current power distribution and industrial systems, DSP and ASIC supplies.

The differential amplifier provides true remote output voltage sensing of both VOUT and ground terminals, enabling high accuracy regulation where IR losses occur through vias, trace runs and interconnects. The LTC3860 operates with a VCC voltage ranging from 3V to 5.5V, a VIN voltage (drain voltage for the high-side MOSFET) from 3V to 24V and produces output voltages from 0.6V to 5V. The device’s voltage mode control architecture allows for a selectable fixed operating frequency from 250kHz to 1.25MHz or it can be synchronized over the same range with its phased-lock loop (PLL). The output current is sensed by monitoring the voltage drop across the output inductor (DCR) for maximum efficiency or using a sense resistor. Its adjustable current limit can be configured for very low sense voltages (0mV to 50mV) to minimize power loss. The LTC3860’s current sharing loop enables accurate current sharing between phases across multiple IC’s both DC and during a load transient.

Additional features include adjustable soft start or tracking, output overvoltage protection and two power good output signals. Furthermore, it maintains ±1% reference voltage accuracy over an operating temperature range of -40°C to 125°C.

The LTC3860 is housed in a 32-lead 5mm x 5mm QFN package and is available from stock. The 1000-piece price starts at $2.59. For more information, visit www.linear.com.

Summary of Features: LTC3860

  • Can be used with Power Blocks & DrMOS Devices
  • Multiphase Operation (Up to 12-Phases) with Accurate Current Sharing
  • Differential Amplifier for Remote Voltage Sensing
  • VCC Ranging from 3V to 5.5V
  • VIN Ranging from 3V to 24V
  • Very Fast Transient Response
  • Phase Lockable Fixed Operating Frequency from 250kHz to 1.25MHz
  • DCR or RSENSE Output Current Sense
  • Adjustable Current Limit
  • Voltage Mode Control
  • Dynamic Current Sharing Between Phases
  • Adjustable Soft Start or Tracking
  • ±1% Reference Voltage Accuracy over -40°C to +125°C
  • Power Good Outputs

About Linear Technology

Linear Technology Corporation, a manufacturer of high performance linear integrated circuits, was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major public companies in 2000. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, µModule® products, and many other analog functions. Applications for Linear Technology’s high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems.

Leave a Reply

Dual Output, Multiphase Step-Down DC/DC Controller Operates with Power Blocks & DrMOS Devices

MILPITAS, CA – February 17, 2010 – Linear Technology Corporation introduces the LTC3860, a dual output synchronous step-down DC/DC controller with multiphase operation, differential output voltage sensing and high frequency operation. This controller works in conjunction with external power train devices such as Power Blocks and DrMOS, as well as discrete N-channel MOSFETs and associated gate drivers, enabling flexible design configurations. Up to 12 phases can be paralleled and clocked out-of-phase to minimize input and output filtering for very high current requirements (up to 300A). Applications include high current power distribution and industrial systems, DSP and ASIC supplies.

The differential amplifier provides true remote output voltage sensing of both VOUT and ground terminals, enabling high accuracy regulation where IR losses occur through vias, trace runs and interconnects. The LTC3860 operates with a VCC voltage ranging from 3V to 5.5V, a VIN voltage (drain voltage for the high-side MOSFET) from 3V to 24V and produces output voltages from 0.6V to 5V. The device’s voltage mode control architecture allows for a selectable fixed operating frequency from 250kHz to 1.25MHz or it can be synchronized over the same range with its phased-lock loop (PLL). The output current is sensed by monitoring the voltage drop across the output inductor (DCR) for maximum efficiency or using a sense resistor. Its adjustable current limit can be configured for very low sense voltages (0mV to 50mV) to minimize power loss. The LTC3860’s current sharing loop enables accurate current sharing between phases across multiple IC’s both DC and during a load transient.

Additional features include adjustable soft start or tracking, output overvoltage protection and two power good output signals. Furthermore, it maintains ±1% reference voltage accuracy over an operating temperature range of -40°C to 125°C.

The LTC3860 is housed in a 32-lead 5mm x 5mm QFN package and is available from stock. The 1000-piece price starts at $2.59. For more information, visit www.linear.com.

Summary of Features: LTC3860

  • Can be used with Power Blocks & DrMOS Devices
  • Multiphase Operation (Up to 12-Phases) with Accurate Current Sharing
  • Differential Amplifier for Remote Voltage Sensing
  • VCC Ranging from 3V to 5.5V
  • VIN Ranging from 3V to 24V
  • Very Fast Transient Response
  • Phase Lockable Fixed Operating Frequency from 250kHz to 1.25MHz
  • DCR or RSENSE Output Current Sense
  • Adjustable Current Limit
  • Voltage Mode Control
  • Dynamic Current Sharing Between Phases
  • Adjustable Soft Start or Tracking
  • ±1% Reference Voltage Accuracy over -40°C to +125°C
  • Power Good Outputs

About Linear Technology

Linear Technology Corporation, a manufacturer of high performance linear integrated circuits, was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major public companies in 2000. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, µModule® products, and many other analog functions. Applications for Linear Technology’s high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems.

Leave a Reply

featured blogs
Apr 24, 2026
A thought experiment in curiosity, confusion, and cosmic consequences....

featured paper

Quickly and accurately identify inter-domain leakage issues in IC designs

Sponsored by Siemens Digital Industries Software

Power domain leakage is a major IC reliability issue, often missed by traditional tools. This white paper describes challenges of identifying leakage, types of false results, and presents Siemens EDA’s Insight Analyzer. The tool proactively finds true leakage paths, filters out false positives, and helps circuit designers quickly fix risks—enabling more robust, reliable chip designs. With detailed, context-aware analysis, designers save time and improve silicon quality.

Click to read more

featured chalk talk

Connecting the World Through Space
Sponsored by Mouser Electronics and Qorvo
In this episode of Chalk Talk, Ryan Jennings from Qorvo and Amelia Dalton explore the critical components and design challenges inherent in LEO satellite infrastructure and how Qorvo’s solutions are enabling the next generation of space-based connectivity. 
Mar 30, 2026
28,659 views