SOURCE: Intersil


August 01, 2011 10:00 ET

Intersil's Vcore DC/DC Controller Provides Complete Power Solution for Latest Embedded CPU / GPU Cores

ISL95831 Lets CPU Move Into Sleep Mode With no Latency, Ensuring Maximum System Performance

MILPITAS, CA--(Marketwire - Aug 1, 2011) - Intersil Corporation (NASDAQ: ISIL) today expanded its portfolio of industry-leading multi-phase DC/DC controllers by introducing the ISL95831. This controller provides a complete solution for CPU and GPU core power while delivering best-in-class transient response and energy savings. The ISL95831 complies with Intel's IMVP-7/VR12™ specification for smart voltage regulation to reduce power dissipation in the second-generation lntel® Core-i5/i7 processors.

The ISL95831 is based on Intersil's Robust Ripple Regulator (R3)™ technology, a hybrid of fixed-frequency PWM control and variable-frequency hysteretic control that delivers the industry's fastest transient response. The R3 modulator delivers faster transient settling time than typical modulators and automatically adapts switching frequency to optimize light load efficiency.

The Intersil solution, unlike competitive devices, allows the CPU to enter into and out of sleep mode frequently without accumulating performance latency, which can slow system performance. By avoiding this latency, the ISL95831 ensures the CPU is able to achieve maximum performance.

"The Intersil ISL95831, which we have implemented in our next-generation 3U VPX boards, helps us to provide our customers with the performance and energy efficiency they need," said David Pepper, GE Intelligent Platforms.

Features and Specifications
The ISL95831 accepts input voltages from 4.5V to 25V and delivers output voltages from 0.25V to 1.5V. Both of the device's dual outputs support inductor DC resistance (DCR) current sensing with a single negative temperature coefficient thermistor for DCR temperature compensation. Both outputs support remote voltage sensing, programmable VBOOT voltage, programmable IMAX, TMAX, adjustable switching frequency, OC protection and separate Power Good outputs. The device features a serial data bus along with dual outputs, configurable for 3-, 2- or 1-phase for the first output, and 1-phase for the second output, using an integrated gate driver.

Pricing and Availability
The ISL95831 is available now in a 6mm x 6mm 48-pin TQFN package and is priced at $3.68 each in 1,000-unit quantities. For more information please visit

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About Intersil
Intersil Corporation is a leader in the design and manufacture of high-performance analog, mixed-signal and power management semiconductors. The Company's products address some of the fastest growing markets within the communications, computing, high-end consumer and industrial electronics markets. 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

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