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LM5145-Q1: LM5145-Q1

Venu Gopal
Prodigy 90 points
Part Number: LM5145-Q1


The above graph we are getting in the oscilloscope for the switching of High side and Low side MOSFET of the converter design we given below. 

There is so much noise coming in the Switching signal of the GATE driver. To decrease that noise or noise free signal what's the solution? and what may be the reason for the noise in the switching.

This converter is designed for 24V and 30A.

MOSFET PART NUMBER:  SQJA84EP-T1_GE3

Kindly provide the proper response to this email.

Thanks in Advance.

  • 0
    TI__Guru 61821 points

    Hellol Venu 

    Please make it sure you are using a short ground lead when measurung the switching noise. Please refer the examples Here

    Then, please try to increase R53 to ~ 2-5 ohm, which slows down the switching speed while increasing the MOSFET temperature.  

    -EL