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Modeling >> Behavioral Models >> temperature detector with hysteresis in Verilog-A
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Message started by boa on Jul 8^th, 2008, 5:44am

Title: temperature detector with hysteresis in Verilog-A
Post by boa on Jul 8^th, 2008, 5:44am

Hi,

I need to make a Verilog-A model for temperature protection block and it should have temperature hysteresis: i.e. output should switch from zero to one at one treshhold temperature when temperature is rising and at different one when the temperature is following. Normally for comparator with hysteresis I would use 2 cross statements with +1 and -1 direction, but it seems that cross works only for transient and I need smth that will work with DC sweep.

Is there any way to implement it?

Title: Re: temperature detector with hysteresis in Verilog-A
Post by Geoffrey_Coram on Jul 10^th, 2008, 10:33am

LRM 2.2 added the "above" event, which works like cross in transient, but also acts during dc. You'll have to check if your simulator has implemented it yet.