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A detailed guide to powering the TigerSHARC processors

Posted: 26 May 2008 ?? ?Print Version ?Bookmark and Share

Keywords:TigerSHARC application note? processor? power management?

As technology constantly evolves and silicon geometry shrinks, different supply requirements for powering these processors emerge. Typically the core is powered with a lower voltage than the I/Os. The I/Os are generally at a higher voltage to maintain a compatible interface with other system devices. Also, as clock speeds of 600MHz are reached, these processors become more power hungry. Thus, an efficient power management scheme becomes critical. This application note by Mark Malaeb, in conjunction with the technical note EE-170 (available from Analog Devices Inc.), provides a guide that can be used as a reference design for powering those processors. EE-170 provides the detailed equations and derivations for the power needs of the processors. This application note discusses the voltage regulators/switchers that are suitable for those processors running at 600MHz. The TigerSHARC processor requires three different supply voltages, the core voltage of 1.2V, the internal DRAM voltage at 1.6V, and the I/O voltage of 2.5V. These three voltages are discussed in details in the following sections.

View the PDF document for more information.





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