http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/ Design-Oriented_Analysis_D-OA Design Oriented Analysis Wed, 21 Oct 2009 20:06:30 GMT http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/263 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/263 Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Design-Oriented_Analysis_D-OA group. File Sun, 27 Sep 2009 20:08:23 GMT Jon Kirwan http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/261 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/261 ... Thanks. Jon Sun, 27 Sep 2009 14:20:10 GMT sandpiler2002 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/260 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/260 To control SPAM, changes have been made to group policies. Membership is now restricted and group moderators must approve anyone who wants to join the group. Wed, 15 Jul 2009 23:04:29 GMT mark neil http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/234 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/234   Hi,   I am looking for pwm-switch models of "active clamp forward" and "active clamp flyback" topologies. I have attached the topologies in Word as Fri, 10 Jul 2009 00:55:48 GMT sminchev http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/230 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/230 Hi, I've got couple of questions regarding the methods of analyzing feedback systems presented in Dr. Middlebrook's course. 1. In Ch.10 page 88 the graphical Tue, 16 Jun 2009 18:16:59 GMT Frank Wiedmann http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/227 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/227 ... The timesteps of your transient simulation might be too large for the oscillation frequency of your circuit. You could try to start the oscillation by Fri, 12 Jun 2009 11:03:51 GMT carmen82_kee http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/224 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/224 Sorry, i re-upload the waveform again. http://www.flickr.com/photos/39362887@N04/3618572017/ Fri, 12 Jun 2009 09:22:51 GMT carmen82_kee http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/223 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/223 Hi all, I used stb analysis from Cadence ADE to get the loop gain and loop phase of stability of my LDO. For high ESR value, the stb analysis shown that the Wed, 03 Jun 2009 19:39:56 GMT stevie_ong8 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/219 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/219 Hi Frank and Rob, Thanks for your inputs. I tried using 3 methods 1) Middle brook approach 2) stb analysis with back to back balun and iprobe 3) stb analysis Wed, 03 Jun 2009 18:54:02 GMT stevie_ong8 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/218 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/218 Hi Frank and Rob, Thanks for your inputs. I tried using 3 methods 1) Middle brook approach 2) stb analysis with back to back balun and iprobe 3) stb analysis Wed, 03 Jun 2009 18:39:53 GMT stevie_ong8 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/217 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/217 Hi Frank and Rob, Thanks for your inputs. I tried using 3 methods 1) middlebrook approach 2) stb analysis with balun back to back and iprobe 3) stb analysis Wed, 03 Jun 2009 18:35:58 GMT stevie_ong8 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/216 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/216 Hi Frank and Rob, Thanks for your inputs. I tried using 3 methods 1) Middle brook approach 2) stb analysis with back to back balun and iprobe 3) stb analysis Wed, 03 Jun 2009 18:24:15 GMT Robert Fox http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/215 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/215 It sounds to me like you're using the analyses right. How are you modeling asymmetry in your op amp? Unless you've intentionally included some accounting for Wed, 03 Jun 2009 17:49:30 GMT stevie_ong8 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/214 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/214 Hi Frank and Rob, Thanks for your inputs. I tried using 3 methods 1) Middle brook approach 2) stb analysis with back to back balun and iprobe 3) stb analysis Tue, 02 Jun 2009 07:40:05 GMT Frank Wiedmann http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/211 http://groups.yahoo.com/group/Design-Oriented_Analysis_D-OA/message/211 ... Regarding simulation, Cadence has a cmdmprobe component in analogLib that can be used to simulate differential-mode and common-mode loop gain. See