Manmash
Newbie level 3
Hi everyone,
Attached is my first attempt to build a buck converter that will give a 3v output. I'm using the TL494 to switch the FET .
the oscillator frequency is set to 100khz using 0.01uF cap and 1kohm res. according to the TL494 application note, the duty cycle can be controlled by controlling the voltage input of the dead-time control input (pin4) as the input voltage is varied from 0 to 3.3. I tried that, but the ouput i keep getting is unstable. it keeps increasing from 0 to 7v then decreasing to zero and so on. what am i exactly missing?
any help is highly appreciated!!!
Regards
Attached is my first attempt to build a buck converter that will give a 3v output. I'm using the TL494 to switch the FET .
the oscillator frequency is set to 100khz using 0.01uF cap and 1kohm res. according to the TL494 application note, the duty cycle can be controlled by controlling the voltage input of the dead-time control input (pin4) as the input voltage is varied from 0 to 3.3. I tried that, but the ouput i keep getting is unstable. it keeps increasing from 0 to 7v then decreasing to zero and so on. what am i exactly missing?
any help is highly appreciated!!!
Regards