Please can someone explain to me how pulse width modulation work with mosfet in a smps circuit.
Oscillator ics in smps (like viper22A) have an internal mosfet control by pwm.
So please what is the output waveform of a transistor or mosfet that is driven with pwm, and why must pwm be given to a transistor first to switch.
Since the flyback transformer needs a varying voltage, then why not feed the pwm directly to the transformer.
It making me find difficulty understanding the difference between square wave and pwm.
Is there anything am not getting right?
Oscillator ics in smps (like viper22A) have an internal mosfet control by pwm.
So please what is the output waveform of a transistor or mosfet that is driven with pwm, and why must pwm be given to a transistor first to switch.
Since the flyback transformer needs a varying voltage, then why not feed the pwm directly to the transformer.
It making me find difficulty understanding the difference between square wave and pwm.
Is there anything am not getting right?