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DRV8301EVM question

Zhao Tang
Prodigy 575 points

Team,

I got a request from a customer (email address 1294039604@qq.com) regarding DRV8301EVM: the customer wants to understand the function of SH_A, SL_A, GL_A, SENSE_N1, SENSE_P1. I have copied the customer on cc.

  • 0
    TI__Guru** 114905 points

    Hi Zhao,

    I am not sure I understand the question. Please refer to section 7.2 Functional Block Diagram of the datasheet.

    SH_A is used for multiple purposes:

    1) It is the low side of the high side gate driver.
    2) It is monitored to determine if the Vds of the high side (PVDD to SH_A) or low side (SH_A to SL_A) FETs are correct

    SL_A is used similarly to SH_A

    1) It is the low side of the low side gate driver.
    2) It is monitored to determine if the Vds of the low side (SH_A to SL_A) FET is correct

    GL_A and GH_A control the low side and high set FETs, respectively

    SENSE_N1, SENSE_P1 are optional. If used, it is connected to a current sense amplifier. The current sense amplifier is used to monitor current through the motor.