New integrated DC-DC converter targets graphic and core processor applications in portable electronics

November 06, 2012 // By Paul Buckley
ON Semiconductor has addressed the growing demand for higher power densities in portable consumer electronics designs with the introduction of the NCP6338, a configurable, 6 A step down DC-DC converter IC.

The NCP6338 configures its output voltage for the actual load thereby optimizing efficiency to ensure battery power is not needlessly wasted. By meeting the latest load transient requirements for multi-core Application Processors the converter enables smartphones to match portable game consoles in performance and graphics quality.

The NCP6338 has a programmable output voltage range from 0.6 V to 1.4 V in 6.25 mV increments while operating down to an input voltage of 2.3 V. The device is optimized to supply power to    advanced applications processors for portable devices, such as tablets and smartphones. Using a modular output strength drive combined with automatic pulse-width modulation (PWM) and pulse-frequency modulation (PFM), the device can adapt its efficiency performance to the load profile and thus save battery life. Operating modes and output voltage can be set through an I²C serial interface while several combinations can be I/O pin selected for latency free control.

Operating at a 3 MHz switching frequency with a large possible selection of output L-C filters, the design engineer can achieve high regulation performance in a small area; for instance sustaining a 3 A load transient in a window of +/- 40 mV. This is made possible by output voltage differential sensing combined with the high performance core which regulates to within +/- 1% across the entire temperature, load and input voltage ranges.

Packaging and Pricing

The NCP6338 is offered in a compact 2.06 mm x 2.46 mm x 0.6 mm CSP-30 RoHS-compliant package and priced at $1.05 per unit in 10,000 unit quantities.

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