Other Parts Discussed in Thread: UCC21750,
Tool/software:
Gate Driver Actual Peak Current:
UCC21750/UCC21750-Q1 is a constant voltage driver, so the driver will supply current until the gate is charged to the VDD-VEE potential (and the current will vary based on the potential difference between Gate and VDD). So, the instantaneous current will be based on the current potential of the gate.
UCC21750/UCC21750-Q1 Peak current spec is: 10A typical.
The UCC217xx device temperature impacts the peak current – please check the across temp peak current plot below. This temperature curve is based on driver’s temperature only.
However, the effective peak current in a system is:
The peak source/sink current depends upon external gate resistors (Ron, Roff) and FET’s internal resistance (RG_INT).
The calculator tool Page “Peak Drive Current Calculator” helps to compute the driver peak current based on the system conditions.