Can someone spare a spice model for a UC3842?
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From: Jim Thompson on 13 Jun 2006 11:10 On Tue, 13 Jun 2006 21:07:43 +1200, Terry Given <my_name(a)ieee.org> wrote: >The Real Andy wrote: >> I thought one of the big manufacturers would have one. It is a common >> part... sigh.. > >FWIW: > > > > >** From C:\Program Files\SIMetrix\models\psu.lb >.subckt UC3842 Vout Osc Vp Comp Sense Vfb Ref Gnd >A$U2 [U6_OUT U5_IN4] U2_OUT nand >A$U3 [U2_OUT U7_OUT] U5_IN4 nand [snip] >.model inv d_inverter >.model or d_or >.model DIG_GND d_pulldown strong=true out_family="FORCE5" >.model DIG_VCC d_pullup strong=true out_family="FORCE5" >.model toggle d_tff >.model delay1 d_buffer rise_delay=150n fall_delay=150n >.model dead d_buffer rise_delay=20n fall_delay=1n >.model inv_dead d_inverter rise_delay=20n fall_delay=1n >.model nand d_nand >.model and d_and [snip] >** UC3843 current mode SMPS controller >** This model will only run on mixed mode versions of SIMetrix >** It will not run with any other SPICE or XSPICE products > >Cheers >Terry The only reason I can see that this couldn't run on other SPICE products is the undefined subcircuits, such as the digital ones I've quoted above. These are obviously "built-in" functions of SIMetrix. I'd hazard a bet that standard 74HCxx parts could be dropped into those slots. ...Jim Thompson -- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | | http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
From: The Real Andy on 13 Jun 2006 16:38 On Tue, 13 Jun 2006 08:10:13 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon(a)My-Web-Site.com> wrote: >On Tue, 13 Jun 2006 21:07:43 +1200, Terry Given <my_name(a)ieee.org> >wrote: > >>The Real Andy wrote: >>> I thought one of the big manufacturers would have one. It is a common >>> part... sigh.. >> >>FWIW: >> >> >> >> >>** From C:\Program Files\SIMetrix\models\psu.lb >>.subckt UC3842 Vout Osc Vp Comp Sense Vfb Ref Gnd >>A$U2 [U6_OUT U5_IN4] U2_OUT nand >>A$U3 [U2_OUT U7_OUT] U5_IN4 nand >[snip] >>.model inv d_inverter >>.model or d_or >>.model DIG_GND d_pulldown strong=true out_family="FORCE5" >>.model DIG_VCC d_pullup strong=true out_family="FORCE5" >>.model toggle d_tff >>.model delay1 d_buffer rise_delay=150n fall_delay=150n >>.model dead d_buffer rise_delay=20n fall_delay=1n >>.model inv_dead d_inverter rise_delay=20n fall_delay=1n >>.model nand d_nand >>.model and d_and >[snip] >>** UC3843 current mode SMPS controller >>** This model will only run on mixed mode versions of SIMetrix >>** It will not run with any other SPICE or XSPICE products >> >>Cheers >>Terry > >The only reason I can see that this couldn't run on other SPICE >products is the undefined subcircuits, such as the digital ones I've >quoted above. > >These are obviously "built-in" functions of SIMetrix. I'd hazard a >bet that standard 74HCxx parts could be dropped into those slots. > > ...Jim Thompson Thanks Jim. Now I have a few options!
From: martin griffith on 13 Jun 2006 17:30 On Tue, 13 Jun 2006 13:41:45 GMT, in sci.electronics.design "Genome" <mrspamizgood(a)yahoo.co.uk> wrote: > >"The Real Andy" <will_get_back_to_you_on_This(a)b.c> wrote in message >news:r1ss82tn24rk3fiiiq8t7vbg6ibd1dhkcp(a)4ax.com... >>I thought one of the big manufacturers would have one. It is a common >> part... sigh.. > >You could roll your own.... > >http://www.genomerics.org/genspice/UC384X.asc > >DNA > your URL seems to non available here in garlic land . Got a partial hit through the Gugle cache though martin
From: legg on 13 Jun 2006 21:18 On Tue, 13 Jun 2006 18:03:15 +1000, The Real Andy <will_get_back_to_you_on_This(a)b.c> wrote: >I thought one of the big manufacturers would have one. It is a common >part... sigh.. LT1246 is a pin-compatible model, though there's incorrect scaling between comp and the CS comparator at last inspection. RL
From: CC on 13 Jun 2006 23:20
The Real Andy wrote: > I thought one of the big manufacturers would have one. It is a common > part... sigh.. Where's "analog(a)ieee.org"? They had developed one. -- _____________________ Christopher R. Carlen crobc(a)bogus-remove-me.sbcglobal.net SuSE 9.1 Linux 2.6.5 |