Where is a TINA model for this LDO? Where is a TINA "reference design" with this LDO?
Why can't a Webench circuit be exported to TINA? Why support non-TI simulation tools and not the one offered by TI? Your TINA support needs improvement.
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Where is a TINA model for this LDO? Where is a TINA "reference design" with this LDO?
Why can't a Webench circuit be exported to TINA? Why support non-TI simulation tools and not the one offered by TI? Your TINA support needs improvement.
Neil,
I will add this to the TINA-TI Translation queue.
Following your procedure, I exported that circuit to TINA 10 Industrial and replaced the input source with an 8V battery and the output load resistor with a 1k resistor,
Running a DC simulation on this circuit produces an output voltage of 1.2 mV with an input current of 125 mA. Unfortunately I cannot tell what the mysterious two extra pins on your symbol are due to the encrypted macro. Clearly the model is not working correctly. This DC simulation is pretty basic for a 3-terminal voltage regulator!
Can't you simply provide a working "reference design" for TINA without first going through Webench and then exporting the circuit into TINA? The analog guys provide nice, working TINA reference designs for their op amps and don't use encrypted macros. What's the purpose of using encryption anyway?
If you want to run a DC simulation to see the steady state voltage on Vout do the following
1. Check the Output Cap model, you will notice it has IC = 0 this test bench is setup for a Startup Simulation (mentioned in the title). If you run a DC analysis on this test bench as is, you will get Vout = the initial condition on Cout which is 0V.
2. Replace this cap with with a primitive cap in TINA-TI with whatever value you want to use for Cout. By default it will not have any Initial Condition.
3. Now when you run the DC analysis, you will see the correct Vout.
Replacing those special-conditions capacitors with real-world capacitors now give a proper DC simulation result- thank you.
Wouldn't it be simpler to just publish a TINA "Reference Circuit" in the first place instead of wasting all this time? This is an endemic problem with TI power devices. Quit using encrypted models and create normal Spice- based macromodels that are compatible with TINA. If & when necessary, create circuits with initial conditions, etc that illustrate a particular operating condition of that device--- in addition to its normal "Reference Circuit".