Author Topic: control smps with atmega8  (Read 245 times)

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Offline vortex

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control smps with atmega8
« on: April 04, 2021, 12:06:18 pm »
hi everyone i need help about controlling smps with pc817+ atmega8 and remove the tl431 saw i can get amps and voltage that i want
is pwm is the way to go or ther is an ather way

thanks
 
 

Offline DavidAlfa

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Re: control smps with atmega8
« Reply #1 on: April 04, 2021, 12:53:11 pm »
You can just modify the TL431 feeback and do exactly that
Stm32 soldering station firmware: https://github.com/deividAlfa/stm32_soldering_iron_controller
Want support for your board? Put detailed info in the forum and get ready for testing. Issues? Before reporting, always flash the latest github FW and make a full reset.
Please use the forum, don't PM me!
 

Offline vortex

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Re: control smps with atmega8
« Reply #2 on: April 04, 2021, 04:27:26 pm »
i'm trying to make bench power supply from 0 to 50 volt 10 amps and i need some suggest on how to control pc817
iam using codevision avr
 

Offline David Hess

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Re: control smps with atmega8
« Reply #3 on: April 09, 2021, 01:28:43 am »
Keep the TL431 error amplifier and use PWM to make a variable current to drive into the summing point of the TL431 to adjust the output.
 


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