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Old 22nd December 2009, 05:03 PM   #1
diyAudio Member
Join Date: Jan 2006
Location: Grenoble
Default trouble with IR2011 2110 spice subckt


trying to simulate a discrete D amp with LTspice,i've found some model of IR2011 and IR2110.

these two models need to be tie at ground in simulation,but in reality to -Vcc.

so it's impossible to make the simulation working.

i've try to connect the chip in different way,but nothing get a normal behaviour.

the only way is to use IR2011 and IR2110 connect to ground in LTspice but modulator with level shifting cannot be insert in the schematic...

maybe someone knows a way to make it working ?
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Old 22nd December 2009, 06:10 PM   #2
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Join Date: Jan 2006
Location: Grenoble
too late now...

IR2011.sub is working perfectly,even with 1nS step simulation.
thanks to analogspice to make this model

still problem with IR2110 from IR (it's working with ground as reference)

but chip are similar (except prop time...).

simulation looks a good base to design D amp (UCD like).

any feedback for use IR2110 in LTspice ?
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Old 29th December 2009, 11:03 PM   #3
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Location: Grenoble
the LTspice schematic

UCD like with IR2011
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Old 30th December 2009, 05:07 PM   #4
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Location: Grenoble
some of FFT

i've start to design a double side PCB,still checking for a good topology,this is in a good way...
500 VA 2x30 V ac ,double slow rectifier bridge ,irf540n output mosfet at first try.

comparator will be lm360,op amp ne5532 and IR2110 as mos driver

Click the image to open in full size.

Last edited by thierry38; 30th December 2009 at 05:36 PM.
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Old 22nd June 2017, 05:56 PM   #5
kees52 is offline kees52  Netherlands
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Join Date: May 2009
Location: Sprang-capelle Holland.
Has someone the IR2011.sub model? I need then for trying something.

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