Buck Regulators Deliver Up to 12A for Best-in-Class Power Density

The SP7662 synchronous buck regulator, from Exar, delivers 12A at over 93% conversion efficiency within less than 7cm² of board space, resulting in the highest power density in its class.

Two further devices, the 3A SP7661 and 6A SP7663, are also available as part of Exar’s PowerBlox™ regulator family, and share a common architecture allowing engineers to meet varying load requirements. All devices are packaged in a thermally-enhanced DFN package and feature single-supply operation with a wide input-voltage range of 4.5V to 22V. Compatibility with type-II or type-III compensation allows designers more freedom when selecting the output capacitor.

All three devices have an internal regulator, which allows use with a loosely regulated input from a supply such as a rectified AC transformer or Intermediate Bus Converter (IBC). With an accurate ±0.8V reference and features enabling various sequencing configurations, the SP7661, SP7662 and SP7663 can also be used to power a variety of digital processors. Fault protection includes output under-voltage protection and output over-current protection, as well as hiccup mode to avoid overheating.

 

FEATURES PWM voltage-mode architecture Built-in low on-resistance power switches 300kHz fixed-frequency operation Programmable soft start Fast transient response

APPLICATIONS Industrial systems Telecom cards POL converters Low-cost POLA™-module alternative

 

 

The SP7662EB is available to members of the Future Board Club. To apply for the development board, and membership of the Board Club, go to www.my-boardclub.com/manf-offers.htm This offer is free and subject to qualification.

 

Exar / SP7662