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  • TI Thinks Resolved

TINA/Spice/TPA3255: TPA3255 Spice Model

Prodigy 50 points

Replies: 4

Views: 93

Part Number: TPA3255

Tool/software: TINA-TI or Spice Models

Hello,

I am wanting to use the TPA3255 in a new design at my company that produce high power low frequency output Antennas for the security industry.
These antennas then power certain wireless devices that can then talk back to a system. Unfortunately I am not allowed to say more than this...


I want to use this class D amplifier over the traditional Class A/B design, however the Coil impedance isn't that of a standard Speaker.
I have been searching for a spice model so I can play around with values to check how to optimize the LC filter part.
I did look at the application note but it only mentions standard speakers and not arbitrary loads...
The out put is a 200Hz  Sinusoidal wave with peak current of 20A  and the impedance of the coil are the following:


Inductance (measured at frequency 1000 Hz)                                     1.5 mH
Resistance (DC measurement)                        0.5 Ohm

Kind Regards

Daniel

  • Oh I forgot to mention if there is no spice model for the TPA3255 what is the closest Class-D amplifier that I could use that is very close to the TPA3255.
  • Hi Daniel,

    I will have my colleague who is the expert on this device take a look at your question.

    Andy
  • In reply to Andy Liu SH:

    Thank you very much I really appreciate it!

  • In reply to Daniel Zinner:

    Hi Daniel,

    We do have an LC filter calculator that can help you calculate the values that you will need.  However as I mentioned to you in this thread:  we currently don't have any spice models for these parts.

    Very sorry for the inconvenience.

    Best Regards,

    Robert Clifton.

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