POWER MOSFET'S power consume in boost DC/DC converter

[phosphor_zhu]

dc dc converter mosfet

Hi ,guys

I simulate the efficiency of the boost converter ,and find that the POWER

MOSFET consume about 8 percent of the whole power. Does it large ? how

can i improve this? And how can i get the spec for the driver of the POWER

MOSFET. (such as delay time , rising time falling time)

And the boost's whole power consume is 0.3Wat. the time cycle is 2us.


Please , help me . with many thanks!

 

[gamer]

power mosfet, research

i think you have to study from recent research papers

 

[FvM]

The simulation also can tell you, which kind of losses are dominant. I see no sense in guessing about possible measures without this information. Plotting either loss power (uds•id) or loss energy (∫uds•id) for one switch cycle would be instructive.

 

[phosphor_zhu]

The simulation also can tell you, which kind of losses are dominant. I see no sense in guessing about possible measures without this information. Plotting either loss power (uds•id) or loss energy (∫uds•id) for one switch cycle would be instructive.

Hi ,FvM

Yes, I have done like that. i get the power every main component consumes. but the power consumed by inductor ,diode model can not reduce. so i think i can breach at this point.(POWER MOSFET )

Thank you ,for your attention!

 

[FvM]

The important difference is, that switching losses may be (partially) influenced by modifying the driver signal. But high MOSFET losses may also indicate an unsuitable transistor.