Sep 28, 2005 #1 M mark_nctu Advanced Member level 4 Joined May 7, 2001 Messages 111 Helped 4 Reputation 8 Reaction score 1 Trophy points 1,298 Location TW Activity points 683 Need a large capacitance for loop compensation in dc-dc convertor. How to design a large active capacitance (5nF) on chip ? Thanks!
Need a large capacitance for loop compensation in dc-dc convertor. How to design a large active capacitance (5nF) on chip ? Thanks!
Sep 28, 2005 #2 J JNekas Member level 5 Joined Mar 11, 2002 Messages 80 Helped 3 Reputation 6 Reaction score 1 Trophy points 1,288 Location Russia Activity points 641 Active capacitor ?? Measure capacitor current through the capacitor and amplify it
Sep 29, 2005 #3 S sunking Advanced Member level 3 Joined May 25, 2004 Messages 873 Helped 70 Reputation 140 Reaction score 23 Trophy points 1,298 Activity points 6,283 Active capacitor ?? it is diffcult to do. you can use active cap.
Sep 29, 2005 #4 S Syukri Full Member level 5 Joined Aug 9, 2005 Messages 249 Helped 24 Reputation 48 Reaction score 10 Trophy points 1,298 Location Malaysia Activity points 3,954 Re: Active capacitor ?? Totally agreed with both senior up there... In chip cap is very small, as a result of the gap between two layers. Cox=εo/tox In order to get large cap. ucan try to use many metal layers but the problems of matching and delay arrise
Re: Active capacitor ?? Totally agreed with both senior up there... In chip cap is very small, as a result of the gap between two layers. Cox=εo/tox In order to get large cap. ucan try to use many metal layers but the problems of matching and delay arrise
Sep 29, 2005 #5 scottieman Full Member level 2 Joined Aug 8, 2005 Messages 136 Helped 12 Reputation 24 Reaction score 1 Trophy points 1,298 Location On Top of Silicon Activity points 2,657 Re: Active capacitor ?? JNekas said: Measure capacitor current through the capacitor and amplify it Click to expand... Just a reminder, aware the poles generated from the active capacitor circuit Scottie
Re: Active capacitor ?? JNekas said: Measure capacitor current through the capacitor and amplify it Click to expand... Just a reminder, aware the poles generated from the active capacitor circuit Scottie
Sep 30, 2005 #6 H huojinsi Full Member level 5 Joined Jan 21, 2005 Messages 256 Helped 25 Reputation 50 Reaction score 6 Trophy points 1,298 Activity points 2,216 Re: Active capacitor ?? About active capacitor,u can see the patent of national semiconductor. The patent introduce the mechanism of active capacitor!
Re: Active capacitor ?? About active capacitor,u can see the patent of national semiconductor. The patent introduce the mechanism of active capacitor!