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The current might be internally limited.
IRLML Datasheet(PDF) – International Rectifier
Sign up using Email and Password. That’s W dissipated in a SOT device.
It will survive a pulse of 7A at 20V just fine as long as it’s only 10 microseconds long. As long as that doesn’t cause it to get hotter than its maximum junction temperature, no harm will be done. I would place a 0 ohm resistor there for future experimentation.
(PDF) IRLML2803 Datasheet download
If the pulse is short enough, the FET will not heat up much and therefore survive just fine. The FET can’t get rid of that heat but will absorb it in its thermal mass instead, heating up a little.
The Apps Engineer likely will not have access to any Fab details. In fact, the datasheet for the MIC states: Sign up using Facebook.
MOSFETs like the ones in the MIC’s output stage can handle large current pulses for a short time by simply absorbing the heat generated by the pulse in their thermal mass. My thinking is this irmll2803 lead to current peaks that easily exceed the driver’s 1A maximum peak current and damage the chip, but the evaluation board demonstrates that this is not the case, what am I missing? The chip specifies the “typical” LO output current as 1A, not an absolute maximum.
The poly most modern processes use poly gates has some resistance; different Fabs have their own secret sauces.
IRLML2803 MOSFET. Datasheet pdf. Equivalent
Owing to the fact that this gate driver features adaptive dead-time and thus monitors the gate of the MOSFET to determine when it has fully irlm2803 off, a gate resistor prevents proper sensing of the actual gate. Post as a guest Name.
International Rectifier IRLML Series Datasheets. IRLML, IRLMLTR Datasheet.
Unimportant 1 6. Mahendra Gunawardena 1, 9 Without a gate resistor the only thing limiting the current is the gate driver’s output resistance, which is supposedly low, it datasheey not be a good jrlml2803 otherwise. On page 4, bottom right, there’s a graph showing the maximum safe operating area SOA of the device.
So if you just short its output to ground, it will die. Sign up or log in Sign up using Google.