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  • Ulrike Anderwald
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austriamicrosystems presents AS7620, industry's first 32V 500mA buck regulator with integrated dual power monitor

AS7620 high voltage buck regulator offers low 30 A quiescent current, high partial load efficiency and maximizes data integrity during power-fail conditions

(PresseBox) (Unterpremstaetten, Austria, ) austriamicrosystems (SWX: AMS), a leading global designer and manufacturer of high performance analog ICs for communications, industrial, medical and automotive applications, today expanded its DC-DC converter portfolio with the AS7620, a hysteretic, high efficiency 32V step-down regulator in a small 4x4mm MLPQ 12-pin package. Ideally suited to maximize up-time of utility metering, sensor interface and other industrial motion control and battery-powered data-acquisition equipment, the AS7620 provides both, early-power-fail warning and power-good signals to microcontrollers that cannot afford to lose critical data during a power failure or brown-out condition.

The AS7620 DC-DC regulator is optimized for industrial 24V applications and delivers up to 500mA. Available with a fixed 3.3V output or adjustable output voltage between 1.2V and VIN, the device features a wide input voltage between 3.6V and 32V and offers a high efficiency rate of up to 93%. Additionally, an integrated 100% duty-cycle extends operation in low-dropout conditions. A pin-selectable peak current limit optimizes inductor selection, reducing component size. Built on a hysteretic architecture, the AS7620 is a power miser when it comes to minimum and partial load operation, operating on less than 37 A when delivering 500 A of output current and consuming approximately 100 A at 10mA output, which allows for smaller hold-up capacitors or extends operating battery life for portable analyzers.

"austriamicrosystems' AS7620 is the first in a series of high-voltage step-down converters that addresses the peculiar needs of industrial 24V applications, and is industry's first 32V-stepdown converter to provide simultaneously an early-power-fail warning and power-good signal in a compact, thermally efficient package, hereby eliminating external comparators and reducing board space" said Matjaz Novak, Marketing Director Industry & Medical at austriamicrosystems. "When the lights go out, the AS7620 shines with its low operating current and extended supply voltage range that includes a low-drop-out mode to keep that microcontroller running until its supply voltage falls below the 90% power-good threshold."

The AS7620 DC-DC converter allows a wide range of low profile inductors and ceramic capacitors and does not require any compensation. Soft-start, current limit and thermal shutdown make this converter fail-safe. During shutdown the current draw is reduced to only 1 A.

The AS7620 DC-DC converter is available now in a 4x4mm MLPQ 12-pin package and is specified for the industrial temperature range of -40°C to +85°C for ambient conditions. Product-specific information and free samples via austriamicrosystems' online shop ICdirect are available at www.austriamicrosystems.com/03products/AS7620/AS7620.htm

austriamicrosystems AG

austriamicrosystems is a leading designer and manufacturer of high performance analog ICs, combining more than 25 years of analog design capabilities and system know-how with its own state-of-the-art manufacturing and test facilities. austriamicrosystems leverages its expertise in low power and high accuracy to provide industry-leading customized and standard analog products. Operating worldwide with more than 1,000 employees, austriamicrosystems focuses on the areas of power management, sensors & sensor interfaces, portable audio and car access in its markets Communications, Industry & Medical and Automotive, complemented by its Full Service Foundry activities. austriamicrosystems is listed on the SWX Swiss Exchange in Zurich (ticker symbol: AMS).