The Designer's Guide Community Forum

The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl
Simulators >> Circuit Simulators >> bulk-source junction current exceeds ‘imax’
https://designers-guide.org/forum/YaBB.pl?num=1216604567

Message started by qiushidaren on Jul 20^th, 2008, 6:42pm

Title: bulk-source junction current exceeds ‘imax’
Post by qiushidaren on Jul 20^th, 2008, 6:42pm

Hi all,

I encountered a problem when I used Spectre to simulate a circuit, the circuit configuration I think is ok, but it always said: bulk-source junction current exceeds ‘imax’, can you give me some tips to solve this disgusting problem? Thank you in advance!

Best regards,
Terry

Title: Re: bulk-source junction current exceeds ‘imax’
Post by Geoffrey_Coram on Jul 21^st, 2008, 9:00am

You should "save" the mos's backgate current and see if you can get a sense for how severely and for how long the current exceeds imax. Could be a switching transient, could be you tied your backgate to the wrong supply!