[IBIS-Users] Bus Switch IBIS Models

Hi,

When you have MOSFET switch and model it using [Series Mosfet] keyword in
IBIS there are two ways to pin map it. The first way is to use [Model]
Series and just use [Series Pin Mapping] and this assumes that the switch is
always in On state. The other way is to use [Model] Series_switch with
[Series Pin Mapping] and [Series Switch Groups] and this way there can be
configured On and Off states. However I have found that most simulation/cad
tools do not fully support [Series Switch Groups] without manual
modification by end user. Modeling the switch as a Series device just Series
Pin Mapping seems to be the default supported state.

Has anyone else seen this issues of Series Switch Groups not being
supported? Even when I do some modifications for a tool to support it many
do not seem to use the Off state data. I would also be interested to hear of
the simulation usage case where someone needs the ability to switch between
On and Off states.

Thanks,

Timothy Coyle

President

Signal Consulting Group LLC

405 Western Ave #430

South Portland, ME 04106

Tel: 617.297.2566

Email: <mailto:tim.coyle@siconsultant.com> tim.coyle@siconsultant.com

Web: <http://www.siconsultant.com/> http://www.siconsultant.com

 <http://www.sharksim.com/> SharkSim - Signal Integrity IBIS Modeling
Software

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