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[参考译文] MCT8316A:降低启动浪涌电流

Guru**** 2524550 points
Other Parts Discussed in Thread: MCT8316A

请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1537733/mct8316a-reduce-startup-inrush-current

器件型号:MCT8316A


工具/软件:

您好:

有哪些方法可以降低 MCT8316A 上的启动电流? 我使用电池为 BLDC 驱动器模块供电、并且由于其内部电流限制、偶尔会跳闸。  

这是我当前的 JSON 文件:

{
  "signature": "oneui-register-data",
  "data": [
    [
      {
        "idx": 0,
        "id": "isd_config",
        "value": "0x6F04C100"
      },
      {
        "idx": 1,
        "id": "motor_startup1",
        "value": "0x38C561F7"
      },
      {
        "idx": 2,
        "id": "motor_startup2",
        "value": "0x1BB999A4"
      },
      {
        "idx": 3,
        "id": "closed_loop1",
        "value": "0x0746B314"
      },
      {
        "idx": 4,
        "id": "closed_loop2",
        "value": "0x02A664D0"
      },
      {
        "idx": 5,
        "id": "closed_loop3",
        "value": "0x4CC40101"
      },
      {
        "idx": 6,
        "id": "closed_loop4",
        "value": "0x000CE944"
      },
      {
        "idx": 7,
        "id": "const_speed",
        "value": "0x00A00504"
      },
      {
        "idx": 8,
        "id": "const_pwr",
        "value": "0x177048C2"
      },
      {
        "idx": 9,
        "id": "150_deg_two_ph_profile",
        "value": "0x36DB6DA6"
      },
      {
        "idx": 10,
        "id": "150_deg_three_ph_profile",
        "value": "0x36DB6D80"
      },
      {
        "idx": 11,
        "id": "trap_config1",
        "value": "0x054BA106"
      },
      {
        "idx": 12,
        "id": "trap_config2",
        "value": "0x2A880000"
      }
    ],
    [
      {
        "idx": 0,
        "id": "fault_config1",
        "value": "0x78F43025"
      },
      {
        "idx": 1,
        "id": "fault_config2",
        "value": "0x74473809"
      }
    ],
    [
      {
        "idx": 0,
        "id": "gd_config1",
        "value": "0x18440008"
      },
      {
        "idx": 1,
        "id": "gd_config2",
        "value": "0x14000000"
      }
    ],
    [
      {
        "idx": 0,
        "id": "pin_config1",
        "value": "0x2D720602"
      },
      {
        "idx": 1,
        "id": "pin_config2",
        "value": "0x080C0000"
      },
      {
        "idx": 2,
        "id": "device_config",
        "value": "0x7FFF0000"
      },
      {
        "idx": 3,
        "id": "peri_config",
        "value": "0x00000000"
      }
    ],
    [
      {
        "idx": 0,
        "id": "ana_trim3",
        "value": "0x48004800"
      },
      {
        "idx": 1,
        "id": "ana_trim4",
        "value": "0x00000000"
      },
      {
        "idx": 2,
        "id": "ana_trim5",
        "value": "0x00000031"
      },
      {
        "idx": 3,
        "id": "ana_trim6",
        "value": "0x00000000"
      },
      {
        "idx": 4,
        "id": "ana_trim7",
        "value": "0x00000000"
      },
      {
        "idx": 5,
        "id": "ana_trim8",
        "value": "0x00006701"
      },
      {
        "idx": 6,
        "id": "ana_trim9",
        "value": "0x0065E7E2"
      },
      {
        "idx": 7,
        "id": "ana_trim10",
        "value": "0x536C123B"
      }
    ],
    [
      {
        "idx": 0,
        "id": "algo_reserved1",
        "value": "0x00000000"
      },
      {
        "idx": 1,
        "id": "algo_reserved2",
        "value": "0x00000000"
      },
      {
        "idx": 2,
        "id": "algo_reserved3",
        "value": "0x00000000"
      }
    ],
    [
      {
        "idx": 0,
        "id": "gate_driver_fault_status",
        "value": "0x00000000"
      },
      {
        "idx": 1,
        "id": "controller_fault_status",
        "value": "0x00000000"
      }
    ],
    [
      {
        "idx": 0,
        "id": "sys_status1",
        "value": "0x00DD0000"
      },
      {
        "idx": 1,
        "id": "sys_status2",
        "value": "0x60010000"
      },
      {
        "idx": 2,
        "id": "sys_status3",
        "value": "0x00000000"
      }
    ],
    [
      {
        "idx": 0,
        "id": "device_ctrl",
        "value": "0x00008000"
      }
    ],
    [
      {
        "idx": 0,
        "id": "algo_ctrl1",
        "value": "0x00000000"
      }
    ]
  ]
}

谢谢!

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    你(们)好  

    我们需要降低占空比斜坡参数、压摆率并启用 CBC 下限。

    CBC 限制不会停止驱动电机、它只是在相电流超过时切断电流、然后、一旦电流降至限值以下、它就会导通 MOSFET。

    我将指出更改并在今天晚些时候更新您。

    谢谢、此致

    Venkatadri S.

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    谢谢。 某些情况下、VM 为 24V、相电阻为 1.65 欧姆、稳态电流消耗围绕 500mA 直流电阻。 我的电池有一种“断续“模式、当检测到大电流瞬变时、它会自行关断、这是核心问题。  

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    你(们)好

    感谢您分享详细信息、我将在明天回顾并作出回应。

    谢谢、此致

    Venkatadri S.

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    尊敬的 Desmond:

    电机电阻是多少?  

    您是否尝试降低了斜坡速率、CBC 限制和开环电流?

    谢谢、此致

    Venkatadri S.