Hi Cody I suggest you to use the commercial PI software. The inner-plane capacitance has been modeled in the software. Hope this is helpful Best Regards Zhangkun 2009.1.20 -----邮件原件----- 发件人: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] 代表 codymiller@xxxxxxxxxx 发送时间: 2009年1月20日 2:55 收件人: si-list@xxxxxxxxxxxxx 主题: [SI-LIST] Power Supply impedance simulations Hi group, I am simulating decoupling capacitance /power supply impedances in a spice tool. I am using simple series RLC for my decoupling caps+ via inductance. My question for the group is how should I model inner-plane capacitance? Thanks, Cody ------------------------------------------------------------------ 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