TPS7H1111-SP: Unencrypted PSpice Models

Hi Jim,

The model for this device is unencrypted. The model for the main FET, which is used in this model, is required to be encrypted. Using this FET model allows for more accurate simulation and the ability to simulate things like PSRR. If there is a need, the encrypted FET model can be replaced with an unencrypted generic one for running general prototyping simulations. Alternatively, customers who don't have access to PSpice, can utilize PSpice-for-TI.

Portion of netlist where the FET is described is shown below. The model "nmos_1111" can be replaced/renamed with another FET model that the user adds a definition for in the netlist.

                        Drain              Gate    Source            Bulk               Model/Subcircuit Name

X_M1_U1        M1_N10438    G         M1_N08730    M1_N08730    nmos_1111

Here is an example FET definition that shows the parameters that should be used:

.subckt nmos_1111_basic D G S B
MN1111 D G S B M1111

.MODEL M1111 NMOS
+ LEVEL = 5
+ W = 173094.56u
+ L = 1.41u
+ KP = 23u
+ VTO = 0.588155

.ENDS nmos_1111_basic

Thanks,

Sarah