How the input voltage is step down in a smps?

Status
Not open for further replies.
A

ABEL DANIEL

Member level 2
Joined
Apr 10, 2012
Messages
47
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Visit site
Activity points
1,594
Is it only depends on the duty cycle(of the pwm).Does the turns ratio have any effect on stepping down?
 

If you are referring to a standard buck converter which uses an inductor to step down the voltage, then there is no turns ratio since there is only one winding.
 

im telling about the one that uses a smps transformer
Click to expand...
Good you mention it.

There are also different converter types, may be you are referring to flyback converter?
For the time being, you should assume that turns ratio matters.
 

may be you would recognize what type of converter is it if i upload my circuit here.

i think its the flyback itself....
 

Actually he did answer your question in post #4. The output voltage depends upon both duty-cycle and turns ratio. Here's some references on flyback converters to help you understand their operation.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…