[SOLVED] need of driver in sg3525

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Muhammad Ilyas Khan

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hi to every one , my question is that does there any need of driver for the gate of mosfet when using sg3525 for pwm. i am saying this because i generate pwm and i was driving a 1amp dc motor through mosfet and it was working fine without any driver.,so its realy no need of driver for mosfet . and 2nd part of question is that can i control 20 amps through mosfet by pwm without using any driver . actualy i am trying to make a buck converter.
please help me. thanxxxx
 

pwm circuit of sg3525

hi to every one . please help me in understanding the following circuit,please....i am new in electronics and i am very interested in electronics..the circuit is
 

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