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Buck switching regulators deliver up to 12A

Posted: 06 Dec 2006     Print Version  Bookmark and Share

Keywords:Sipex  PowerBlox  synchronous  buck switching regulators  SP7661 

Sipex Corp. has announced the latest additions to its PowerBlox family of high power synchronous buck switching regulators. The SP7661, SP7662 and SP7663, packaged in a thermally enhanced 7-by-4mm DFN, feature operation from a single supply to an input voltage range of 4.5V to 22V. The SP7662 is the highest power density regulator in its class, capable of delivering up to 12A at conversion efficiencies greater than 93 per cent (SP7662) in less than 7cm² of board space.

The 3A, SP7661 and 6A, SP7663 options provide designers with a common architecture to meet varying load requirements. The PowerBlox regulators have an internal VCC regulator which makes them ideal for use in single supply system applications with loosely regulated inputs, such as the rectified AC transformers commonly used in industrial systems and the Intermediate Bus Converters (IBC) used in telecom systems. The one per cent 0.8V feedback and other features enabling various sequencing configurations make these regulators excellent choices for powering a wide variety of digital processors. Fault protection includes output under-voltage protection (UVP) and output over-current protection (OCP) with hiccup mode to avoid overheating.

"Sipex's PowerBlox synchronous switching regulators are a leading edge power technology that is easy to use for any system designer. The ultra-high power density leaves more room to add features, increasing a systems value to the end customer," said Jon Cronk, Power Management Marketing Director. "Sipex supports these regulators with the online design tool, PowerBlox Lab, where external components are selected by the expert system for any given requirement. The downloadable simulator allows engineers to quickly verify and document their design to give them confidence that the regulator design will work reliably."

The SP7661, SP7662, and SP7663 are available in 26-pin, DFN RoHS compliant, lead-free package compatible with JEDEC reflow cycle specifications for lead-free process.

Pricing is Rs.113.80 ($2.50), Rs.179.80 ($3.95), and Rs.316.36 ($6.95) for the SP7661, SP7663, and SP7662 respectively in 1,000 quantities.

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