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Power Electronics Europe News
Application-specific buck regulators support Intel Tiger Lake
Alpha and Omega Semiconductor (AOS) has introduced the EZBuck regulators which power the Intel Tiger Lake processor platform. They have adjustable output voltage for high power density operation.

The AOZ2264VQI and AOZ2369VQI are offered in a QFN 4.0 x 4.0mm and QFN 5.0 x 5.0mm package, respectively. They are claimed to offer the industry’s most compact footprint to support VCCIN_AUX rails in Intel Tiger Lake platforms used in notebook and desktop computing systems.

Tiger Lake products have two rails; one to powers the core and graphics processors, and the other - VCCIN_AUX - powers the auxiliary processor. It is the auxiliary processor which supports add-on features such as audio, video, connectivity, and other functions that enhance user experience. Today’s feature-rich personal computing systems require a VCC_AUX rail with high currents. Alternative power implementations that are available require either a controller with external discrete power FETs or a dual-phase converter, both of which take up more board space than the integrated AOZ2264VQI and AOZ2369VQI regulators which are offered in a single QFN.  

The AOZ2264VQI (16A) and AOZ2369VQI (30A) regulators include features specifically designed to meet Intel Tiger Lake specifications. The 2-bit VID pins allow the VCCIN_AUX power rail to adjust with voltage for 0V, 1.1V, 1.65V, and 1.8V, depending on multiple systems operating modes. Both regulators have passed all the validation requirements included in the Intel Tiger Lake Platform Component List (PCL).

AOS’s proprietary COT architecture provides fast load transient response performance and enables stable and low voltage ripple operation with small-sized ceramic capacitors, for further size and cost savings.

The regulators have a wide input range of 4.0 to 28V, a fixed soft start, ‘power good’ output, integrated bootstrap diode, cycle by cycle current limit and short circuit, over-voltage and thermal shutdown protection.

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