I'm trying to design an inverting buck-boost using the TPS54620 for an aerospace application.
1. Imported the unencrypted SPICE model into LTSpice (only available SPICE software at my current job). Simulation seems to work fine when configured as a synchronous buck converter, but I get a SPICE error message whenever the simulation finishes.
2. Cannot get the simulation to work at all when configured as an inverting buck-boost. Simulation hiccups at around 500us. Any advice?
Repeated SPICE error message:
Questionable use of curly braces in "b§e_u12_abm157 u12_n16721150 0 v={if(v(u12_n16721160)>0.5,v(oclow),0)} "
Error: undefined symbol in: "if([v](u12_n16721160)>0.5,v(oclow),0)"
Questionable use of curly braces in "b§e_u11_abm173 ss_disch 0 v={if(v(ss_tr)<20m,0,if(v(u11_n6045136)>0.5,1,0))} "
Error: undefined symbol in: "if([v](ss_tr)<20m,0,if(v(u11_n6045136)>0.5,1,0))"
Questionable use of curly braces in "b§g_u4_abmii1 u4_n7397984 ss_tr i={if(v(u4_n16572832)>0.5,2.3u,0)} "
Error: undefined symbol in: "if([v](u4_n16572832)>0.5,2.3u,0)"
Questionable use of curly braces in "b§g_u4_abmi5 ss_tr 0 i={if(v(ss_disch)>0.5,1.25e-3,0)} "
Error: undefined symbol in: "if([v](ss_disch)>0.5,1.25e-3,0)"
Questionable use of curly braces in "b§g_u5_abm2i3 0 u5_n7406901 i={v(vref_gm)-v(vsenseint)} "
Error: undefined symbol in: "[v](vref_gm)-v(vsenseint)"
Questionable use of curly braces in "b§g_u5_abm2i1 0 comp i={limit((v(u5_n7406901)-v(0))*1300u,-110u,110u)} "
Error: undefined symbol in: "limit(([v](u5_n7406901)-v(0))*1300u,-110u,110u)"
Questionable use of curly braces in "b§g_u1_abmii1 vin en i={1.15u+3.4u*v(enab)} "
Error: undefined symbol in: "1.15u+3.4u*[v](enab)"
Questionable use of curly braces in "b§e_u1_abm173 u1_n7335522 0 v={if(v(vin)>4,3,0)} "
Error: undefined symbol in: "if([v](vin)>4,3,0)"
Questionable use of curly braces in "b§e_u8_abm167 u8_n16831519 0 v={if((v(boot)-v(ph))<2.1,0,1)} "
Error: undefined symbol in: "if(([v](boot)-v(ph))<2.1,0,1)"
Questionable use of curly braces in "b§e_u8_abm170 u8_n16831622 0 v={if(v(ldrv)>1.1,0,1)} "
Error: undefined symbol in: "if([v](ldrv)>1.1,0,1)"
Questionable use of curly braces in "b§e_u8_abm79 u8_n16831630 0 v={if((v(hdrv)-v(ph))>1.1,0,1)} "
Error: undefined symbol in: "if(([v](hdrv)-v(ph))>1.1,0,1)"
Questionable use of curly braces in "b§e_u6_abm152 u6_iswf 0 v={if(v(u6_n16489275)>0.5,v(isw),-50)} "
Error: undefined symbol in: "if([v](u6_n16489275)>0.5,v(isw),-50)"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}|v(b)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))|v(b)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}|v(b)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))|v(b)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate1 yint1 0 v={if(v(a)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate2 yint3 0 v={if(v(yint2)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](yint2)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}|v(b)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))|v(b)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}|v(b)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))|v(b)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}}&v(c)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh))&v(c)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}}&v(c)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh))&v(c)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate1 yint1 0 v={if(v(a)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate2 yint3 0 v={if(v(yint2)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](yint2)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}|v(b)>{{vthresh}}|v(c)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))|v(b)>((vthresh))|v(c)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}}&v(c)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh))&v(c)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}}&v(c)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh))&v(c)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}}&v(c)>{{vthresh}}&v(d)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh))&v(c)>((vthresh))&v(d)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}}&v(c)>{{vthresh}}&v(d)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh))&v(c)>((vthresh))&v(d)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate1 yint1 0 v={if(v(a)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate2 yint3 0 v={if(v(yint2)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](yint2)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate1 yint1 0 v={if(v(a)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate2 yint3 0 v={if(v(yint2)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](yint2)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate1 yint1 0 v={if(v(a)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate2 yint3 0 v={if(v(yint2)>{{vthresh}},{{vss}},{{vdd}})}"
Error: undefined symbol in: "if([v](yint2)>((vthresh)),((vss)),((vdd)))"
Questionable use of curly braces in "b§e_abmgate yint 0 v={if(v(a)>{{vthresh}}&v(b)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh))&v(b)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate1 yint1 0 v={if(v(a)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](a)>((vthresh)),((vdd)),((vss)))"
Questionable use of curly braces in "b§e_abmgate2 yint3 0 v={if(v(yint2)>{{vthresh}},{{vdd}},{{vss}})}"
Error: undefined symbol in: "if([v](yint2)>((vthresh)),((vdd)),((vss)))"
WARNING: Less than two connections to node u2:set0. This node is used by v:u2:_v47.
d_d: Emission coefficient, N=0.01, too small, limited to 0.1
Direct Newton iteration for .op point succeeded.
Ignoring empty pin current: Ix(u2:pvin)
Ignoring empty pin current: Ix(u2:vsense)
Ignoring empty pin current: Ix(u2:pvin)
Ignoring empty pin current: Ix(u2:vsense)
Changing Tseed to 1e-08
Heightened Def Con from 3.94984e-05 to 3.94988e-05
Heightened Def Con from 0.00224018 to 0.00224018
Heightened Def Con from 0.00790351 to 0.00790351
Date: Mon Jul 17 19:08:39 2023
Total elapsed time: 99.052 seconds.
tnom = 27
temp = 27
method = modified trap
totiter = 5015007
traniter = 5014998
tranpoints = 1801449
accept = 1346243
rejected = 455208
matrix size = 332
fillins = 211
solver = Normal
Avg thread counts: 3.0/1.0/1.0/1.0
Matrix Compiler1: 16.54 KB object code size 3.2/1.6/[1.1]
Matrix Compiler2: 24.04 KB object code size 1.9/1.7/[1.0]
Demo garbage circuit just to get the simulation working:
