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Compiler/TMS320F28377S: TMS320F28377S

user6346729
Prodigy 160 points
Part Number: TMS320F28377S
Other Parts Discussed in Thread: CONTROLSUITE

Tool/software: TI C/C++ Compiler

I'd like to enquire something about the TI's DSP chip TMS320F28377/9S.

Our company plans to use it to implement the resolver to digital conversion. Now we have the following questions that need to be confirmed with you，

 

1. IS there successful application case for resolver software decoding; If we use it, what is the voltage level should be of the system?

2. The electrical frequency of the decoder ？

3. Pre-compiled library and its components related to soft decoding?

4. What is the difference in performance between TMS320F28377/9S and PGA411？

5. How much excitation should be set?

6. What are the ways to improve the signal-to-noise ratio? How to achieve this by optimizing the hardware design?

7. The accuracy and hysteresis of the decoder？

  • 0
    TI__Mastermind 27240 points

    1. We have a resolver example available in controlSUITE at 

    C:\ti\controlSUITE\development_kits\TMDSRSLVR_v1.0

    This uses an EVM - TMDSRSLVR, available from TI.

    2.The demo example uses an exc freq of 10KHz.

    3.Yes, it is available as a library.

    4. Such a study is not done, though they are close.

    5. The designer will have to decide based on the use case.

    6. It is pretty much decided by the hardware layout, scaling the feedback signal to be closer to ADC input voltage limits and using the peak value of the feedback for angle calculation

    7. It varies from 12 to 13 bits.