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Sonsivri > Electronics > Projects (Moderators: bbarney, pickit2) > 555 as mosfet driver with or without pwm
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sadman
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Sow The Seeds of Love
« on: August 14, 2024, 09:37:23 09:37 »
see this nice video tutorial

https://www.youtube.com/watch?v=FKqkRDM0Al0

sadman
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PM3295
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« Reply #1 on: August 15, 2024, 06:08:41 18:08 »
Long ago, I was asked by a friend to design a high-power buck converter (48 V to 12 V @ 25 A) using the 555 as the controlling PWM element. The design below simulated with very good load transient response at 25 A. I never actually build this design, and I don't think he got around using it at the end.

It shows at least that you may be able to manipulate the 555 to do other interesting tasks besides its usual application functions.
« Last Edit: August 15, 2024, 06:37:50 18:37 by PM3295 » Logged
sadman
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« Reply #2 on: August 16, 2024, 06:44:15 06:44 »
HI PM3295

nice circuit idea shared, I have made switch mode adjustable voltage regulator with 555 timer using voltage control pin which also be used audio modulation for long distance audion transmeter.

sadman
« Last Edit: August 16, 2024, 06:49:14 06:49 by sadman » Logged
bobcat1
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« Reply #3 on: August 18, 2024, 09:12:19 09:12 »
Hi

555 can only drive/Sink  300mA so you need carefully choose the Mosfet you drive
Far more easy to use dedicated Mosfet driver who can drive more powerful Mosfet

All the Best

Bobi   
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