Hi,
It indicates the Max Pulse Drain Current is 85A in the datasheet, which is under condition that the pulse duration <=300us and the duty cycle <= 2%.
Thanks.
PY,
Thanks for the question.
Idm is essentially a calculated value, as such you will need to run some calculations for your conditions to make sure you stay within the SOA of the FET.
See this article here that explains all of this:
Hi Chris,
For this device, based on transient thermal impedance, a single pulse of 10us will have normalized thermal impedance < 0.0007, which will have much lower thermal impedance and therefore the device should be able to dissipate a lot of heat. Thus, device can survive thermally.
Based on below SOA curve, if i extrapolate Rdson & 100us curve (since there is no 10us curve), i could get current of ~200A. Does it mean we can say the device can be used to output up to 200A (which is still <400A) with pulse of 100us with VDS = 2.5V? If so, why there is a hard limit at 85A for pulse <1ms?
PY,
You can read about the SOA limits at link below. I am not sure where you get the 400A limit form the datasheet, it says limit is 85A.
