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DC/DC converter saves power in industrial equipment

Posted: 24 Jan 2008 ?? ?Print Version ?Bookmark and Share

Keywords:step-down DC/DC converter? industrial equipment?

Advanced Analogic Technologies Inc. has unveiled the AAT1160, a synchronous step-down DC/DC converter that delivers up to 3A output from a 12V input. Combining high-power efficiency levels and a very low quiescent current, the AAT1160 offers power savings in a variety of industrial applications, particularly backplane-based equipment, as well as portable systems running off two-cell Li-ion batteries.

The AAT1160 is said to deliver significant power savings to tightly packed rack-mounted, backplane-based systems such as telecommunications switches, cellular base stations and server farms by leveraging AnalogicTech's proprietary ModularBCD process technology that minimizes quiescent current consumption and uses a synchronous design. Devices manufactured in ModularBCD are said to offer higher efficiency, smaller size and higher levels of integration than those fabricated in many other processes.

The AAT1160 current-mode, step-down DC/DC converter operates across a wide 4V to 13.2V input voltage range. It supplies a load current up to 3A with a fixed or adjustable output voltage, which can be regulated to as low as 0.6V.

The AAT1160 supports efficiency levels up to 96 percent. The device also consumes an industry-leading low 150?A no-load quiescent current. The AAT1160 maintains high efficiency over the entire load range. The user can select to operate the device in a forced pulse width modulation (PWM) mode and synchronize the switching to an external signal to control switching noise. The 800kHz switching frequency also minimizes total solution size by allowing the use of small external components.

A soft-start function limits input surge current and eliminates output voltage overshoot when the device is turned on. The AAT1160 also features short-circuit and overtemperature protection. Qualified across the -40C to 85C temperature range, the AAT1160 is available in a Pb-free, 16-pin, 3mm x 4mm TDFN package.

Pricing starts at $1.82 in quantities of 1,000.

- Gina Roos

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