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Without a gate resistor the only thing limiting the current is the gate driver’s output resistance, which is supposedly low, it would not be a good driver otherwise.
This current is limited by its internal output resistance since there doesn’t seem to be a limiting circuit according to the datasheet’s diagram of the output stage. Sign up using Email and Password. My thinking is this should lead to current peaks that easily dataaheet 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?
It won’t be able to deliver ilrml2803 or more continuously, however – it can only do that for short pulses. 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.
Unimportant 1 6. That’s W dissipated in a SOT device. The current might be internally limited.
Sign up or log in Sign up using Google. As long as that doesn’t cause it to get hotter than its maximum junction temperature, no harm will be done.
IRLML MOSFET Datasheet pdf – Equivalent. Cross Reference Search
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Mahendra Gunawardena 1, 9 Owing to the fact that this gate driver features adaptive dead-time and thus monitors the dafasheet of the MOSFET to determine when it has fully turned off, a gate resistor prevents proper sensing of the actual gate.
Post as a guest Irllm2803. So if you just short its output to ground, it will die. It will survive a pulse of 7A at 20V just fine as darasheet as it’s only 10 microseconds long. In fact, the datasheet for the MIC states: At t 0 any capacitor will act like a short circuit. The poly most modern processes use poly gates has some resistance; different Fabs have their own secret sauces.
The Apps Engineer likely will not have access to any Fab details.
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Home Questions Tags Users Unanswered. The chip specifies the “typical” LO output current as 1A, not an absolute maximum.
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