My thinking is : The Power Budget for the IC for all rails might be calculated possibly when the IC is fully loaded i.e running all its applications/interfaces. Thanks, Ravindra. -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Wei Zhou Sent: Friday, November 21, 2008 9:54 AM To: Zhangkun; SI LIST Subject: [SI-LIST] Re: How to know the powerconsuming of IC? Zhangkun, Not sure if you are asking about this. It is quite straightforward, just measure the current drawn from different power supply (3.3, 1.2, 1.8 etc) of the IC under normal operation. Regards, Wei -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx on behalf of Zhangkun Sent: Thu 2008-11-20 19:52 To: 'SI LIST' Subject: [SI-LIST] How to know the powerconsuming of IC? Dear all In a product development, how to get the power consuming of IC? This information is very important for VRM selection, heatsink design, and so on. By the way, how does the IC vendor get the power consuming of IC? Best Regards Zhangkun 2008.11.21 ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu