Nov 28, 2010 #1 E efun Newbie level 2 Joined Aug 3, 2010 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,305 If the load capacitor has ESR resistance, then this circuit gets a LHP zero for free. I want to ask why this ESR generates a LHP zero?
If the load capacitor has ESR resistance, then this circuit gets a LHP zero for free. I want to ask why this ESR generates a LHP zero?
Nov 28, 2010 #2 burningmosfet Member level 1 Joined Sep 13, 2010 Messages 38 Helped 3 Reputation 6 Reaction score 3 Trophy points 1,288 Activity points 1,579 I'm not sure if that can really help u cuz the question is not so clear If u model the real capacitor impedance Z as a series of R (ESR=equivalent series resistance) and capacitance you got: Z= R+1/(s•C) =(1+s•R•C)/(s•C) where s=j•2•π•f=j•w (1+s•R•C) generate the LHP zero :roll:
I'm not sure if that can really help u cuz the question is not so clear If u model the real capacitor impedance Z as a series of R (ESR=equivalent series resistance) and capacitance you got: Z= R+1/(s•C) =(1+s•R•C)/(s•C) where s=j•2•π•f=j•w (1+s•R•C) generate the LHP zero :roll: