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elmurry
Posted: April 11, 2012 03:23 am
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Do I need to insert an optocoupler between the PWM output of a microcontroller and a MOSFET gate driver IR2184 to protect it, or the driver already has an isolation ?

thanks
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MikeGyver
Posted: April 11, 2012 05:18 am
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The inputs are very high impedance, they'll interface fine with a uC "3.3V and 5V input logic compatible", Why do you need galvanic isolation?
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elmurry
Posted: April 11, 2012 07:46 pm
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This driver has two outputs high and low side. I want to know whether I can use this driver to drive only one high-side mosfet or it works only with both outputs connected.
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Sch3mat1c
Posted: April 11, 2012 07:53 pm
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The outputs can be operated independently.

If the IR2184 contains a UVLO block, you may need to supply the unused section; there is no need to connect anything to its output.

Tim


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Answering questions is a tricky subject to practice. Not due to the difficulty of formulating or locating answers, but due to the human inability of asking the right questions; a skill that, were one to possess, would put them in the "answering" category.
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Abdullah M.A.
Posted: April 12, 2012 06:13 pm
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Connect it directly wink.gif

Abdullah


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