Joel, Vd is the forward-bias voltage of the diode which is around 0.60 v. The current 1.2A (your specs) could be considered as your diode saturation current. I guess the science of "IC implemented diode" is complex thus, I would suggest you just do the approximation or just consider the critical parameters of the design. Also since a diode used for ESD protection is expected to run at high current you don't have to worry about the doping concentrations. Afterall these parameters are beyond your control.
These are the things I would suggest you consider in your diode design: 1) Make sure your diode will not turn on even during normal operation. The supply voltage of your IC is must be considered. 2) Just focus on the ESD current you set which is I supposed = 1.2A. Make sure your diode can survive this current level. You have to consider the current carrying capacity of the material used. 3) The series resistance must be as low as possible. There are layout techniques you can implement to ensure this. For one, you may use the finger-like design or optimize the number of contacts. Regards, Robinson On Sat, Nov 19, 2011 at 11:40 AM, joel maslog <[email protected]> wrote: > Dear all, > > Good day... > > I am a bit out of topic with the group considering it is only allowed for > Electric software. But my initial implementation of my design would be done > with electric itself. I am currently studying on designing a MOS bounded > diode for High voltage tolerance ESD Design. I know that most of you were > barely so fanatic with analogue designing so as I. So, I would like to ask, > as to how would I be able to calculate the area of the MOS bounded diode > with an Human Body Model ESD of 5k-volts and 1.2-A. I am currently been > using > > id=qA[(Dnnpo/Ln)(Dppno/Lp)](exp(Vd/Vt-1) > > Does Vd=5k-volts and id=1.2-A??? I am bit confuse on this one because > definitely I will get an error for Vd=5k-volts....Your idea is very much > appreciated..... In case you knew books related to my topic, please tell me > the title and author... > > Thank you very much and God bless you always!!! > > > Best regards, > JOEL > > -- > You received this message because you are subscribed to the Google Groups > "Electric VLSI Editor" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/electricvlsi?hl=en. > -- You received this message because you are subscribed to the Google Groups "Electric VLSI Editor" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/electricvlsi?hl=en.
