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CCS: TIDM-1001 Two-Phase Interleaved LLC Resonant Converter Kit Does Not Have PWM Waveform Output

Other Parts Discussed in Thread: TIDM-1001

Tool/software: Code Composer Studio

I have made various hardware settings according to the TIDM-1001 kit requirements, but there is no PWM waveform output, and there is never a PWM waveform output! This problem has not been solved for a long time, trouble Chen Jiang ti experts to help answer, thank you very much!

  • Hi Deagle,

    Thanks bringing this to our attention. Can you please answer these questions so I can better help you?

    • Which incremental build are you trying to run?
    • What load do you have on the secondary side (low voltage / output) side of the hardware?

    Thanks,

    Clayton

  • Clayton, hello!
    The following are two implementation monitoring screenshots. The screenshots are correct when there is no running program. When the CPU program is pressed (that is, press F8), the program seems to be not working properly, as shown in the second image!

  • Hi Deagle,

    Thanks for the update. It looks like there is definitely something wrong. Even the address column doesn't make sense. This may be a problem with the JTAG connection.

    Can you please confirm, are you applying voltage to the primary (400V input) side of this design when this happens? A similar problem happens sometimes when there is too much EMI from the switching circuits. This can be improved by using a USB cable with a ferrite bead, or wrapping the cable you are currently using through a toroidal core.