News & Events
Intersil Launches Synchronizable Low-Voltage Power Controllers for Distributed DC/DC Architectures in Broadband Gateway Applications
-- Offer adjustable frequency range and external sync-up capability for distributed DC below 3.3 V~-- Selection of small packages saves board area while high feature integration saves costs
MILPITAS, CA, December 5, 2002 Intersil Corporation (NASDAQ: ISIL), a world leader in the design and manufacture of high performance analog and wireless networking solutions, today announced the new ISL6406 and ISL6426 synchronous buck power controllers that feature an adjustable 100- to 700-kHz switching frequency range and are capable of being synchronized with an external clock or other distributed DC converters in a system. The ISL6406s output voltage is settable from 0.8 to 3.3 V and the ISL6426 output voltage is fixed at a 1.8 V. Small packaging and a high integration of features saves space and reduces cost.
"We continue to expand our selection of power solutions tailored to meet the needs of our Broadband customers," said Randy Roberts, director of Intersils Broadband Power Products.
"The ISL6406 and ISL6426 are further examples of our commitment to this important and rapidly expanding market. High performance with reductions in size and cost is what our customers demand and we deliver."
The ISL6406 and ISL6426 are highly efficient adjustable-frequency synchronous-buck switching regulators that operated from a single 3.3-V or 5-V supply rail. Both regulators are optimized for generating lower voltages for a variety of distributed DC-DC applications, including those in which regulator operating frequency synchronization is required. Typical power supply efficiencies greater than 92% can be achieved helping to eliminate the need for a heatsink in standard-buck or linear-regulating converters. This combination of features and the available miniature packaging, such as the 4 X 4 mm Quad Flat No lead (QFN) package, enables the design of a high performance power supply in an extremely small board area. The ISL6406 and ISL6426 are ideal for DC-DC modules, network access devices and other applications requiring high efficiency.
ISL6406 and ISL6426 Features Summary
- Operate from supply voltage of 5-V or 3.3-V
- Output voltage range of 0.8 to 3.3 V for ISL6406, fixed 1.8 V for ISL6426
- Greater than 92% conversion efficiency
- High duty cycle operation to nearly 100%
- Internal soft start
- No external current sense resistor - lowers component count by using RDS(ON)
- Programmable switching frequency 100 kHz to 700 kHz
- Synchronization feature eliminates beat frequencies and allows for easier filtering of switching frequency noise
- Both ICs offered in 16-lead SOIC, 16-lead TSSOP and 16-pad 4 X 4 mm QFN packages
- QFN package significantly reduces board area
The ISL6406 and ISL6426 are available now. Pricing for hundred-unit quantities is as follows:
| Part | Temp (C) | Package | Price |
| ISL6406CB | 0 to 70 | 16-ld SOIC | $1.48 |
| ISL6406IB | -40 to 85 | 16-ld SOIC | $1.58 |
| ISL6406CR | 0 to 70 | 16-pd QFN | $1.48 |
| ISL6406IR | -40 to 85 | 16-pd QFN | $1.58 |
| ISL6406CV | 0 to 70 | 16-ld TSSOP | $1.58 |
| ISL6406IV | -40 to 85 | 16-ld TSSOP | $1.62 |
| ISL6426CB | 0 to 70 | 16-ld SOIC | $1.48 |
| ISL6426IB | -40 to 85 | 16-ld SOIC | $1.58 |
| ISL6426CR | 0 to 70 | 16-pd QFN | $1.48 |
| ISL6426IR | -40 to 85 | 16-pd QFN | $1.58 |
| ISL6426CV | 0 to 70 | 16-ld TSSOP | $1.58 |
| ISL6426IV | -40 to 85 | 16-ld TSSOP | $1.62 |
Intersil + Elantec Means More for Our Customers
Intersil Corporation is a global semiconductor leader in the design and manufacture of high performance analog and wireless networking solutions. The acquisition of Elantec Semiconductor, Inc., expanded Intersils product portfolios to address four fast growing markets flat panel displays, optical storage (CD and DVD recordable), power management and wireless networking. Intersil brings added customer value in providing complete silicon, software and reference design solutions to new products that enhance the computing experience for people wherever they live, work or travel. 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: www.intersil.com All trademarks mentioned are the property of their respective owners.
