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AnsweredHot!Mosfet driver tc4431

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GuillaumeV
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2020/06/16 06:57:17 (permalink)
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Mosfet driver tc4431

Hello,
I am trying to use a mosfet driver tc 4431 to amplify a PWM which comes from a pic18f47k42 (50%, 25kHz).
The PWM is connected to pin 2 (input PIN).
It is supplied with 25Vdc.
I tried with and without lockdis, it changed Nothing.
I don t use capacitors, is it indispensable?
Does anyone have any ideas?
Thank you
GuillaumeV
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PStechPaul
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Re: Mosfet driver tc4431 2020/06/16 15:16:38 (permalink) ☼ Best Answerby GuillaumeV 2020/06/18 05:39:31
4 (1)
The device calls for 4.7 uF and 0.1 uF capacitors on the supply, and they may be necessary for proper operation. Also output pins 6 and 7 need to be connected together and to the gate of the MOSFET. This is an inverting device, so you need a logic low signal on pin 2 to drive the gate high. What is the exact nature of your problem?

 
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GuillaumeV
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Re: Mosfet driver tc4431 2020/06/18 05:42:30 (permalink)
5 (1)
Hello,
 
My problem was even though I connected a PWM as input, I had nothing in output.
I wired as you said and now it works well.
Thank you very much for your feed back.
 
GuillaumeV
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