CSD18511KCS: CSD18511KCS

Tony Wang72

Prodigy 190 points

Part Number: CSD18511KCS

usually a pull-down resistor need to be added on the gate of CSD18511KCS to avoid floating.

can you show me how to calculate the best pull down resistor value?

Thanks,

Tony

over 5 years ago

0 Chris Bull over 5 years ago

TI__Expert 7905 points

Tony,

Thanks for the question and interest in our devices

Please see attached application note from TI, go to page 15 and there is information on selecting a value of gate resistance.

0 Tony Wang72 over 5 years ago in reply to Chris Bull

Prodigy 190 points

Hi Chris,

what I would like to know is the pull down resistor value, not the Rgate, the serial resistor to Gate of MOSFET?

Thanks,

Tony

0 John Wallace1 over 5 years ago in reply to Tony Wang72

TI__Mastermind 37950 points

Hi Tony,

The value of the pull down resistor from gate-to-source is typically chosen between 10kOhm and 100kOhm (can be more or can be less). If there is a series gate resistor then the value of the pull down resistor should be >>10x the series resistor value because of the resistor divider made up by the two resistors. There may be some dependence on the application and external circuitry as well.

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CSD18511KCS: CSD18511KCS