TPS548B27: TI PSPICE model of the TPS548b27 not giving expected results.

Hi Chuck, 

Please see response here: 

(+) TPS548B27: When to use internal VCC pin? - Power management forum - Power management - TI E2E support forums

Best,

Ryan

Hello Ryan,

I need help with the PSPICE simulation. The PSPICE model for the TPS548b27 does not appear to work when I simulate it. 

I need to run a transient simulation to confirm performance.

I used WEBENCH to get an initial design

I used this design as a template for a PSPICE circuit. I needed to run the PSPICE simulation with the actual models of the input and output capacitors.

The results were not as expected. See the screenshots below: 

Here is the circuit in PSPICE:

I can send the .opj and .DSN files for inspection.

Is there an example circuit that uses this model I could modify to get my circuit to run?

Thanks

Chuck Sampson

Hi Chuck, 

Can you resend the images? They are blurry and I can't read the component values. 

Did you try using SIMPLIS simulation instead?

Best,

Ryan