What method does the MP6642 driver IC use for rotor angle estimation?

Motor Drivers/Sensors
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Subject: Clarification on Rotor Angle Estimation Method in MP6642

Dear [MPS Support/Team],

I noticed in the MP6642 datasheet that rotor angle estimation is performed using phase currents. This suggests a back-EMF-based approach. Could you please confirm:

  1. Which specific observer or algorithm is used for rotor angle estimation?
    (e.g., Back-EMF observer, Sliding Mode Observer, PLL, etc.)

Your clarification will help us better understand the control strategy implemented in MP6642

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Dear Mr(s) Veeranhaneyulu,

My name is Timothy Cheong and I am in charge of FAE for MPS Korea.

I will send the answers through your e-mail.

Thanks in advance for your patience.

Best Regards,

Timothy Cheong