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TPS7H4010-SEP: PSPICE simulator/model not working properly ?

Vincent Fournier
Prodigy 10 points
Part Number: TPS7H4010-SEP

Tool/software:

Hi,

PSPICE
TPS7H4010-SEP_AVG : gives the expected output bias point (5V, 140mA) but the model should not be used for transient analysis => fails to achieve any line regulation (output rises to 6V).

TPS7H4010_TRANS PSPICE model seems not to work in my environement (PSPICE for TI). The output is stuck to 0V.

LTspice

For debug, the two SUBCKT files were read into LTspice. Both  models (TPS7H4010-SEP_AVG ,TPS7H4010_TRANS)  give a 5V,140mA output. 

The startup transient of TPS7H4010_TRANS looks correct (ramp then stabilize). 

However, a couple of warning doesn't give confidence that the simulation is actually correct.

Tina

The TPS7H4010_TRANS Tina model seems to work but is extremely slow (> 60s).

Best regards,
Vincent

Remark : I am new to PSPICE. I know well the cadence and LTspice environments

  • 0
    TI__Genius 12080 points

    Hi Vincent,

    The TPS7H4010-SEP_AVG model is intended for AC stability simulation. Could you share an Archived zip file of your Transient model files so we can see your exact setup and settings? This will make it much easier and faster to debug.

    First, click on your dsn file:

    Then click "Archive Project":

    Make sure these settings are selected, then choose a location for the file to be created and click "OK".

    Thanks,

    Sarah