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Simulators >> Circuit Simulators >> Zener Diode Model in HSpice
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Message started by linker on Aug 15^th, 2010, 11:42pm

Title: Zener Diode Model in HSpice
Post by linker on Aug 15^th, 2010, 11:42pm

Hi,
Anyone can help me with a Zener Diode model in HSpice?

Thanks!

Title: Re: Zener Diode Model in HSpice
Post by linker on Aug 16^th, 2010, 4:03am

http://www.box.net/shared/uke1kzrzir

Title: Re: Zener Diode Model in HSpice
Post by linker on Aug 16^th, 2010, 11:38pm

MODEL DZ IS=80.21637E-9 N=2.80334 RS=3.412605e-002 CJO=135E-12 M=.5033 VJ=.75
+ ISR=4.2604E-6 NR=4.11012 BV=6.2 IBV=49.004E-3 TT=150.49E-9

COMMENTS:please notice to this comments
ISR IS the minimum current of zener diode
IBV is the maximum current of the zener diode
BV Is the break voltage of zener diode

Title: Re: Zener Diode Model in HSpice
Post by Geoffrey_Coram on Aug 17^th, 2010, 4:51am

linker wrote on Aug 15^th, 2010, 11:42pm:

Hi,
Anyone can help me with a Zener Diode model in HSpice?

What help do you need?

BTW:
ISR is the reverse saturation current (at TNOM)
IBV is current at V = -BV
BV is the breakdown voltage

Note that one can have funny issues when computing I at V=-BV from
I(v) = IS * (exp(v/(N*vt)) -1) + ISR * (exp((v+BV)/(NR*vt)) - 1) + GMIN * v
and comparing that to IBV. Of course, I(v) should be continuous, so it seems to me that IBV is overconstraining the system, and maybe is just approximate.