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DC/DC regulator tailored for POL apps

Posted: 10 Aug 2009 ?? ?Print Version ?Bookmark and Share

Keywords:DC/DC regulator? power management? communications?

Analog Devices Inc. has expanded its portfolio of integrated power management switching regulators with the ADP2114 dual-output, synchronous, step-down DC/DC regulator.

Optimized for precision output voltage regulation, the ADP2114 supports switching frequencies up to 2MHz with optimized gate slew rate, providing high-efficiency DC/DC conversion for dual- and single-rail devices such as the latest generation of ADI's ADCs and other high-performance, submicron ICs such as DSPs and FPGAs.

Designed for noise sensitive point-of-load (POL) applications, the ADP2114 achieves high power conversion efficiency up to 95 percent, enabling designers to reduce time to market and provide higher reliability for medical, consumer, communications infrastructure and industrial system applications.

"ADI's new configurable, dual-channel buck regulator enables designers to easily create efficient power conversion solutions for high-performance point-of-load applications," said Laurence McGarry, marketing manager, power management group, Analog Devices. "The first in a new family of DC/DC regulators, the ADP2114 combines the features, performance, flexibility, and ease-of-use into a single device that enables designers to solve many of their most challenging system voltage conversion problems."

The ADP2114's gate slew rate has been optimized for noise sensitive applications while maintaining high power conversion efficiency up to 95 percent, enabling designers to get to market more quickly and provide higher reliability.

The device is also configurable as a dual-channel 2A regulator, a dual-channel regulator with 3A and 1A outputs, or as a single interleaved 4A output with reduced output ripple. Also, ADIsimPower design tools make selecting components and simulating power supply performance easy and fast. Junction temperature range is -40C to +125C.

Additional features include high light load efficiency, soft start to minimize inrush currents and reverse current limit protectionwhich prevents the part from being damaged against pre-charged loads. Independent "Enable" input and PGOOD (power good) output features can be used to provide reliable sequencing. The ADP2114 also supports programmable frequencies that can be set to 300kHz, 600kHz or 1.2MHz, as well as a range of fixed- or adjustable output voltages. The ADP2114 can be used in conjunction with ADI's ADCs such as the AD9268 to create reliable and efficient power supplies for a variety of applications. Multiple ADP2114 devices in the same system can be synchronized out of phase to reduce system noise and input current ripple, further extending its usefulness.

The ADP2114 is available in 5mm x 5mm 32-lead LFCSP package for $2.50 each in 1,000 pieces.

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