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DC Converter for GPU Apps targets portable devices

08 Nov 2012

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ON Semiconductor has recently introduced the NCP6338 DC-DC converter integrated circuit. The company's latest chip aims to address the growing need for higher power densities in portable consumer electronics designs.

The NCP6338 has a programmable output voltage range from 0.6V (V) to 1.4 V in 6.25mV (mV) increments while operating down to an input voltage of 2.3 V. It is optimised to supply power to advanced applications processors for portable devices, such as tablets and smartphones. Using a unique 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 I�C serial interface while several combinations can be I/O pin selected for latency free control.

With the device operating at a 3MHz (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.

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 USD1.05 per unit in 10,000 unit quantities.




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