industry news
Subscribe Now

Intersil’s Four-Phase Buck Controller for VR12.5 CPUs Delivers Industry’s Best Dynamic Transient Response, Reduces System Cost

Milpitas, CA – Oct. 8, 2013 Intersil Corporation (NASDAQ Global Select: ISIL), a leading provider of innovative power management and precision analog solutions, today introduced the ISL95816, a new core controller that provides a cost-efficient, space-saving solution for powering Intel VR12.5 central processors. Featuring a wide input voltage range and excellent fast load transient response, the ISL95816 controller is ideal for mobile computing applications.

The latest ultrabook and tablet products have increasingly complex power requirements. The core controller must be able to deliver specific voltages and regulate the CPE core voltages from wide input power supplies. These advanced systems also require improved power density and efficiency to enable a much smaller footprint.

Intersil’s ISL95816 four-phase buck controller is based on an innovative design that not only supports the requirements of Intel VR12.5 processors, but also offers the industry’s best dynamic transient response. Its wide input voltage range of 4.6V to 19V lets designers use either narrow VDC (Volts Direct Current) or traditional adapters. The new device also provides PWM outputs that can be used with either external drivers or compatible DrMOS solutions, offering added flexibility for designers.

Using Intersil’s proprietary R3 modulator, the ISL95816 buck controller offers fast load transient response with minimal ringing on the output voltage. The R3 modulator performance enables support for the VR12.5 specifications at lower switching frequencies and less output capacitance. This translates to higher efficiency and a smaller footprint solution, reducing the bill of materials (BOM).

Features and Specifications

  • Programmable switching frequency offers design flexibility by allowing for the use of a broad range of output filters
  • Integrated over-current, over temperature, and over/under-voltage protection to prevent shutdown
  • Output voltage regulation between 0.5V and 2.3V

Pricing and Availability

The ISL95816 is available now in a small form factor 32-lead 3x4mm QFN packages with prices starting at $2.49 each in 1,000-unit quantities. A complete evaluation board, the ISL95816EVAL7Z, is available for $699. For more information please visit:http://www.intersil.com/products/ISL95816

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 largest markets within the industrial and infrastructure, personal computing, and high-end consumer markets. For more information about Intersil visit www.intersil.com.

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
26,184 views