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Gate drive measurement considerations

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This activity can contribute towards your Continuing Professional Development (CPD) as part of the IET's CPD monitoring scheme

The more successful a gate driver is in reducing power-up and power-down times, the bigger the headache for accurate measurements. Both choosing the right probe and optimising the probing technique are significant factors in improving measurement accuracy. This white paper provides guidelines.

One of the primary purposes of a gate driver is to enable power switches to turn on and off faster, improving rise and fall times. Faster switching enables higher efficiency and higher power density, reducing losses in the power stage associated with high slew rates. However, as slew rates increase, so do measurement and characterisation uncertainty. This paper describes considerations when measuring and characterising gate drivers. 

Topics addressed in this paper are:

  • Challenges and techniques presently used
  • Techniques and considerations for measuring the high side gate driver
  • Techniques and considerations for measuring the low side gate drive 

This free white paper resource is available to IET members and non-members.

  

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