I'm designing a circuit to control voltage between 2.8 and 4.0 volts using a PWM and 3 DMN1019USN-13 MOSFETs in parallel (to handle the load current), the PWM square wave will be low level 0v and height level 3.0v..
The load is a resistive heater (0.2 Ohms) between the positive pole of Li-ion battery (4.2v - 40 amp nominal current) and the drain pin of the MOSFETS.
A shunt resistor of 0.01 Ohms attached between source pin of MOSFETS and the negative pole of the battery to estimate the current.
Question How much rise and fall time, frequency, duty cycle setting to be used with this MOSFET, the idea is that I cannot determine these factors from datasheet and need help to get a full knowledge in this field..
Below is the datasheet for reference.
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