Integrated voltage regulator delivers 97.5% efficiency in compact package

International Rectifier has introduced the IR3823 SupIRBuck, an integrated voltage regulator that has been designed specifically for space-constrained, energy efficient netcom, server and storage applications.

The IR3823 delivers up to 3A in an ultra-compact 3.5×3.5mm package. Efficiencies in excess of 97.5% are obtainable for designs converting power from a 6V input to a 4.8V output. The extremely high initial efficiency allows switching at up to 1.5MHz from a 12V supply to enable a complete 3A power supply solution in less than 130mm2.

Featuring constant frequency and virtually jitter-free operation with synchronization capability, the new device is well suited to noise-sensitive applications, while the higher bandwidth reduces component count to shrink PCB footprint. A tri-level selectable soft-start feature is also offered for ease of sequencing.

Offering impressive levels of thermal performance, the IR3823 has been designed as an easy-to-implement solution in less than 130mm2 that allows power conversion directly from a 12V input for space constrained, low current point-of-load applications that require benchmark performance.

The IR3823 features programmable switching frequency from 300kHz to 1.5MHz. Other key functions include thermally compensated over-current protection, output over-voltage protection and thermal shutdown.


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