High Side N-Ch MOSFET Switching Circuit - How Bootstrap Circuits work

Let's look at a simple circuit to allow us to place an N-channel MOSFET on the high side of a load. Then let's compare the results with a purpose build IC.

I hope you enjoy the video, let me know what you think. Thanks for watching!

The component list is:
MOSFET: IRF530
Resistor: 1k, 100R, 47R
Capacitor: 680n
Diode: 1N4004 (picked it randomly, use fast diode for high-f applications!)
IC: UCC27714 from Texas Instruments
PWM circuit: NE555, 1k, 100n
Bulb: 12V incandescent

0:00 Intro
0:27 Circuit on breadboard
0:56 Explanation of the problem
1:35 Bootstrap circuit explanation
2:37 Bootstrap circuit on breadboard
4:45 Half bridge IC
5:18 Testing the IC ircuit
5:52 Feeding with a square wave
6:16 Conclusion

Music: Kevin MacLeod - Space Jazz

#diy #electricalengineering #mosfet