New Industry Products

Intersil Releases Synchronous Buck Regulator to Reduce Filter Requirements and Footprint for 5V/12V Applications

March 12, 2007 by Jeff Shepard

Intersil Corp. introduced a 2.5A, wide input voltage synchronous buck regulator that greatly reduces noise and EMI filter requirements through programmable switching frequency and external synchronization. The integrated switching MOSFETs and a thermally enhanced compact 4mm x 4mm QFN package are intended to make the ISL8502 a well-suited fit for 5V/12Vin space-critical applications.

The company claims that, unlike competitive devices, the ISL8502 features external synchronization capability with master/ slave configuration to enable the user to synchronize up to four ICs out of phase and significantly reduce EMI (electromagnetic interference) in the design while also providing multiple outputs from the same input rail. The device’s adjustable switching frequency range of 500kHz to 1.2MHz ensures high efficiency and a smaller number of external BOM components. The external compensation provides additional flexibility and enables various choices of passive devices.

Target applications for the ISL8502 include point-of-load applications, set-top boxes, ADSL modems, switches, routers, graphics cards, FPGA power, ASICs and memory power supplies.

The ISL8502 is available now in a 24-lead QFN package and is priced at $2.21 each in 1,000-unit quantities.