TC4420CPA PDF

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By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. It only takes a minute to sign up. Why not directly drive only with the low-pass filter?

FYI, this circuit is for constant current load. A mosfet driver is often required, but in this case it is not needed. Without the mosfet driver and with other values for the RC-filter it will also work.

The gate of a mosfet act as a capacitor. For PWM signals a mosfet driver can put enough current into the gate, so the mosfet turns on and off very fast. That reduces the heat dissipation of the mosfet. Most mosfets are turned completely on with a voltage of about 9 V at the gate. The Arduino boards can not output that voltage.

A mosfet driver can be used for higher voltages for the gate of the mosfet. For Arduino projects, often "logic level" mosfets are used. They are already turned on at 5 V or even at 3. A resistor from the Arduino board to the gate of the mosfet should be used to limit the peak currents because the gate acts as a capacitor. The project of GreatScott! The gate voltage is altered very slowly. The mosfet driver can be removed. Because of the high currents of this project, the mosfet might blow.

The mosfet driver provides extra protection in case that happens. The fuse is slow. I looked the. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Ask Question. Asked 1 year, 4 months ago. Active 1 year, 4 months ago. Viewed times. What's the problem with u Juraj? Plz refer to my comment on the following Jot's post.

Active Oldest Votes. Jot Jot 1 1 silver badge 9 9 bronze badges. Perhaps it is possible to put two mosfets parallel in case it blows too fast. Perhaps a high voltage will be pushed into the gate. I think that GreatScott! Perhaps splitting the resistor of the rc-filter into two, and with two clamping diodes, it offers the same protection as the mosfet driver. I would like to ask him about his true intention for this intermediate mosfet.

IlgarSky IlgarSky 21 3 3 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

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1pc HIGH-SPEED MOSFET DRIVERS IC TC4420CPA TC4420

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