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DRV2605: ERM(TE12A1H) is not operated.

masahiko shimizu
Guru 11235 points
Part Number: DRV2605

Hi,

My customer is trying to operation of TE12A1H which is ERM.
But Actuator can't be operated completely.

I have attached information of register setting.
Do you have anything of idea of the cause?

Register setting.xlsx

The following is the output voltage waveform of DRV2605.

Best regards,
Shimizu

  • 0
    TI__Expert 8721 points

    Hi Shimizu,

    I reviewed your settings and there are some irregular settings. For example, why is 0x1B = 0x19 (turns off overdrive) and then 0x1B is set to 0x99 after calibration. I recommend just leaving it at 0x99. You have also set the device to ERM open-loop mode with 0x1D = 0xA0. In order to calibrate the device, it needs to be in closed-loop mode. This document can be helpful in setting up the device.

    Even with these settings you should still see something on the output. From your image above, it looks like the output is shorted. Can you read back register 0x01 and see if any faults are detected?

    Also the way the waveform sequencer works is that it will play the first waveform in 0x04 and continue down the list (0x05, 0x06...) until it sees an empty register. Since you have not loaded anything in register 0x05, it will only play the waveform in 0x04 and stop.