SOURCE: Intersil

September 10, 2008 16:52 ET

Single-Phase PWM Controller Delivers Maximum Efficiency for Designs Requiring Wide Voltage Ranges

Intersil's ISL8107 Highly Integrated Controller Is an Easy-to-Use, Flexible Solution Serving Telecommunications and Industrial Applications

MILPITAS, CA--(Marketwire - September 10, 2008) - Intersil Corporation (NASDAQ: ISIL), a world leader in the design and manufacture of high-performance analog semiconductors, has announced the ISL8107, a single phase, non-synchronous buck controller that provides maximum efficiency and flexibility for telecommunications and industrial designs.

The ISL8107 features an ultra-wide operating input voltage range of 9V to 75V, with an internal 1.192V reference voltage tolerance of +/-1% over industrial temperature ranges. It integrates a high-side N-Channel MOSFET driver, which can be used to drive a MOSFET that is connected to the positive supply and is not ground-referenced.

Using voltage-mode control with feed-forward compensation, the ISL8107 provides optimal transient response and a constant loop gain over the input voltage range. The IC's switching frequency can be programmed from 100kHz to 600kHz using an external resistor and capacitor. Switching frequencies can be synchronized to an external clock signal through the SYNC pin.

The ISL8107 also provides programmable soft-start, hiccup mode for short circuit protection, and over-temperature protection. Overcurrent protection is achieved using the MOSFET's Rds(on) sensing, which simplifies the implementation while maintaining converter efficiency.

The ISL8107 is the latest member of Intersil's growing family of highly integrated, efficient single-phase controllers. In addition to telecomm and industrial applications, it also is ideal for routers and switchers, point of load modules, and distributed DC/DC power architecture applications.

Pricing and Availability

The ISL8107 is available now in 16-lead 5mm x 5mm QFN packages and is priced at $2.89 each in 1,000-piece quantities.

For more ISL8107 information:,1477,ISL8107.html

Note to editors: To view a high-resolution downloadable photo of the ISL8107, visit Intersil's photo room at:

About Intersil's Power Management Portfolio

Intersil is a recognized global leader in power management solutions, offering a broad portfolio of products that simplify a variety of power designs. Intersil's family of power management ICs ranges from building blocks such as charge pumps, to highly-integrated, multiple-output and multiphase PWMs, to quad-voltage hot-swap controllers. As a leading supplier of PWM controller ICs with over two billion units shipped, Intersil addresses a broad range of power management needs for applications that include computing, communications, peripherals, display, networking, telecommunications, industrial, instrumentation and battery-powered products. To learn more, visit Intersil's Power Management Web site at

About Intersil

Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, other handheld systems, and notebooks. Intersil's product families address power management functions and analog signal processing functions. Intersil products include ICs for battery management, hot-swap and hot-plug controllers, linear regulators, power sequencers, supervisory ICs, bridge drivers, PWM controllers, switching DC/DC regulators and power MOSFET drivers; optical storage laser diode drivers; DSL line drivers; video and high-performance operational amplifiers; data converters; interface ICs; analog switches and multiplexers; crosspoint switches; voice-over-IP devices; and ICs for military, space and radiation-hardened applications. 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

Contact Information

  • Media Contact
    Rob Purdie
    Public Relations Manager
    Intersil Corporation
    (321) 724-7688