Intersil Corp. has signed a definitive agreement to acquire Zilker Labs Inc., a privately held, fabless semiconductor company with technology leadership in high-efficiency digital power integrated circuits.

Zilker Labs' Digital-DC technology is a mixed-signal power-conversion and management architecture that combines an efficient digital-loop synchronous switching regulator, adaptive MOSFET drivers and a digital-control interface into one IC. This approach provides efficiency, flexibility and scalability, while decreasing board space and design complexity through the reduction of discrete components.

“Despite the challenging economic environment, Intersil remains committed to investing in key strategic acquisitions that broaden our product portfolio and improve our market position,” said Dave Bell, Intersil's CEO. “We believe the acquisition of Zilker Labs, along with the previously announced D2Audio and Kenet acquisitions, positions Intersil for strong growth.”

The acquisition, which adds approximately $1.5 million of additional operating expenses per quarter, is expected to become accretive by 2010. Intersil may record a one-time charge to operating income for purchased in-process R&D expenses when the closing occurs.