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CSD19536KTT: Mosfet suggestion for solenoid driver application

alikaan
Expert 2130 points
Part Number: CSD19536KTT
Other Parts Discussed in Thread: CSD17307Q5A, CSD17304Q3

Hi everyone,

Would you please suggest some mosfet part numbers for my application please ?

Voltage: 24V

Current: 10 Ampers

Trigger will be 3.3V, PWM.

Thanks!

  • 0
    TI__Mastermind 29525 points

    Hi Ali,

    Thanks for your interest in TI FETs. For this application, I'd recommend at least a 30V FET. If there are transients or any chance of overvoltage, then a 40V or 60V device would be better. TI has several 30V FETs with on resistance rated at 3V VGS. Here are some options:

    • CSD17307Q5A in 5x6mm SON package. Estimated conduction loss at 10A is 1.9W.
    • CSD17304Q3 in 3x3mm SON package. Estimated conduction loss at 10A is 1.4W.
    • CSD17308Q in 3x3mm SON package. Estimated conduction loss at 10A is 1.8W.

    If you need to use a 40V or 60V FET for more voltage margin, then you will have to drive the gate with 4.5V minimum. None of our 40V or 60V FETs have on resistance specified at 3V VGS. TI does not recommend operating the FET with a gate drive voltage less than the minimum where rds(on) is specified in the datasheet.

    I am including useful links below to FET selection for load switching and an excel-based load switch FET selection tool that can be downloaded from TI.com.