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Intersil Expands DC/DC Controller Portfolio with Complete Solutions for Embedded and Low Power CPU/GPU Cores

20th September 2011

Intersil Corporation (USA)

ES Admin

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Intersil Corporation has expanded its portfolio of industry leading multi-phase DC/DC controllers by introducing the ISL95835 and ISL95837. Both controllers provide a complete low cost solution for CPU and GPU core power while delivering best-in-class transient response and efficiency. Each 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

Both the ISL95835 and ISL95837 are the industry’s smallest solutions available and offer combined functionality and reduced pin count, saving valuable board space and reducing the total bill of materials. The
ISL95837 has been optimized for lower power, thin and light applications.

The controllers are 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.

Features and Specifications
The ISL95835 includes two internal MOSFET drivers for a 3+1 solution and can be configured as a 3-, 2- or 1-phase VR The ISL95837 can be considered as an ISL95835 dedicated for a 1+1 application with an output of 1-phase VR, maximizing flexibility Both devices operate in diode (or sleep) mode when a CPU enters light load modes for added efficiency and battery life Accept input voltages from 4.5V to 25V and deliver output voltages from 0.25V to 1.5V