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Regulator supports up to 2MHz switching frequency

Posted: 10 Aug 2009     Print Version  Bookmark and Share

Keywords:DC/DC regulator  power management  communications 

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

Optimised for precision output voltage regulation, the ADP2114 supports switching frequencies up to 2MHz with optimised 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, sub-micron 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 per cent, 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 optimised for noise sensitive applications while maintaining high power conversion efficiency up to 95 per cent, 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 -40°C to +125°C.

Additional features include high light load efficiency, soft start to minimise inrush currents and reverse current limit protection—which 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 synchronised 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 Rs.122.12 ($2.50) each in 1,000.

Get related application notes and technical articles on Power Design India.





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