EEVblog Electronics Community Forum
Electronics => Beginners => Topic started by: 24602 on January 18, 2025, 06:42:26 am
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Hey All,
Working on driving 12-24V LED strips from a TLC59711, I have attached a schematic
Just need a double check of the work and confirm would the Gate voltage be ok at 5V?
Need a double check if my Transistor and mosfet combination is correct.
Will be driving approximately 1A of LEDs per channel
Thanks!
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You can add a small gate resistor (e.g., 10Ω) in series with the MOSFET gate. It will limit the inrush current.
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What inrush current? The gate charges to turn on the MOSFET via a fricking 10K resistor!
The PWM period is about 50us, (nom. 10MHz internal greyscale clock divided by 512, see datasheet: Figure 22. ES-PWM Operation) and I suspect the above gate drive circuit will be *far* too slow.
Edit: confirmed by simulation. Wont work! :horse: