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TPS55340: Is it okay to connect a BLDC motor to the load?

Jaeseung Jeong1
Prodigy 130 points
Part Number: TPS55340

Hi, 

What should be noted when supplying the BLDC motor power by the TPS55340? (speed is controlled by PWM of MCU)

The circuit below is the basic circuit provided by TI WEBENCH Power designer.

Are there any parts that need to be added when the motor is connected?

Or should the specifications of the parts be higher?

Thanks,

Jaeseung

  • 0
    TI__Guru 65300 points

    Hello Jaeseung,

    How much current is the motor drawing, when the 12V are ramping from 0V? As a motor is an inductive load, I wonder if during startup the current is permanently increasing which might cause startup issues of the device, but this needs to be tested.