Does Duty cycle related to output power directly?

A

arvinfx

Member

• Feb 13, 2013

• #1

As I know in boost convertor for provide target voltage we use this formula :
**broken link removed**

Dose this formula contain output power?
If no ,how we have to calculate output power?

 

crutschow

Well-Known Member

Most Helpful Member

• Feb 14, 2013

• #2

Output power is output voltage times output current (which depends upon the output load).

 

A

arvinfx

Member

• Feb 14, 2013

• #3

Sorry, But upon formula doesn't contain any amp!

 

F

fernando_g

New Member

• Feb 14, 2013

• #4

This is precisely what Crutschow is telling you, that formula will not by itself calculate output power.

It is only a transfer ratio between the input and output voltage.

To obtain power, you must:

1) Algebraically solve for Vo as a function of D and Vi
2) Multiply that expression by your output load Il, assuming that your load is constant, and not another function of the output voltage

 

A

arvinfx

Member

• Feb 14, 2013

• #5

Thanks, What is formula for measure amp or power that we want ?

 

ccurtis

Well-Known Member

• Feb 14, 2013

• #6

Yes, for pulsed output, average output power is a function of the output duty cycle and the peak output power, directly.

 

Last edited: Feb 14, 2013

F

fernando_g

New Member

• Feb 14, 2013

• #7

P = Vo^2/Rl if the load is a resistor

P = Vo *Il if the load is a constant current