10A and 15A Modules claim Market-Leading Power Density

Exar Corporation today introduced the 10-A XR79110 and 15-A XR79115 single-output, synchronous step-down power modules using Exar's patented emulated current mode constant on-time (COT) control. Both devices provide easy to use, fully-integrated power converters including MOSFETs, inductors, and internal input and output capacitors in a compact 10x10x4mm and 12x12x4mm footprints respectively. The XR79110 and XR79115 offer versatility to convert from common input voltages such as 5V, 12V and 19V. Exar will be discussing this new family of devices at booth A6.169 at Electronica 2014 in Munich, Germany, November 11-14th.

The XR79110 and XR79115 use Exar’s emulated current mode COT control scheme that has the fast transient response of conventional COT control loops while providing excellent line and load regulation performance. Exar's COT control loop enables operation with ceramic output capacitors, eliminating loop compensation components, a key to high module integration. The output voltage can be set from 0.6V to 18V and with exceptional full range 0.1% line regulation and 1% output accuracy over full temperature range. These modules offer a host of supervisory and protection features for proper sequencing, safe operation under abnormal operating conditions and light load operation.

“These devices extend Exar’s existing power module family to high-current single channel solutions for various end applications,” said James Lougheed, Exar’s vice president, power management products. “These modules use a QFN based package technology to provide superior thermal performance and manufacturability all in the smallest footprint on the market. Additionally, access to the QFN package pins facilitates accurate measurements and board debugging.”

The XR79110 and XR79115 will be available on November 11th in RoHS compliant, green/halogen free, space-saving 10x10x4mm and 12x12x4mm QFN packages. The XR79110 and XR79115 are priced at $8.95 and $10.95 respectively in 1,000 piece quantities.