Switching characteristics , Electrical Engineering

Switching Characteristics

The switching  characteristics of power MOSFET the delay time and rise time are responsible to remove the  effect of internal capacitance of the device  and internal impedance of the gate  drive  circuit. These  two times  give the  turn on  time of  power MOSFET.

During  the delay  td input  capacitance charges to gate threshold voltage Vgt and during  rise  time td to gate  voltage rises  to Vgp that will  be the sufficient voltage to turn on the power  MOSFET.

During  the turn off  delay  time tod the gates voltage is removed hence  input  capacitance of the device discharges from Vp to Vgp where VP  is the overdrive gate voltage. The  time during  which this  capacitance discharges from Vgp to Vgt is known  as fall time. In this  time  drain current falls  from IP to zero. Power MOSFET is completely turned off if VGS < Vgt.

Posted Date: 4/2/2013 5:17:43 AM | Location : United States







Related Discussions:- Switching characteristics , Assignment Help, Ask Question on Switching characteristics , Get Answer, Expert's Help, Switching characteristics Discussions

Write discussion on Switching characteristics
Your posts are moderated
Related Questions
Illustrates about the power dissipation management in embedded system? Power Dissipation Management a. Clever real-time programming through Wait and Stop instructions b.

schmitt triggering with emitter coupled transister

Q. A toroid with a circular cross section is shown in Figure. It is made from cast steel with a relative permeability of 2500. The magnetic flux density in the core is 1.25 Tmeasur

Hi there, My project title is grid connected hybrid pv-wind power system. For this topic, i need a specification of the system. For this system a matlab and homer software simulati

Q. Using two 8-to-1multiplexers and one 2-to-1multiplexer, show how a 16-to-1 multiplexer can be obtained in the form of a block diagram.

Q. What layers are covered under end to end layer connectivity? Layers 4-7 of ISO-OSI reference model communicate with peer entities in end systems. In intermediate systems,th

why biasing of bjt transistor is essential?

3) A sine wave oscillator, in effect, converts

Q. Consider a 1-bit version of the digital comparator shown in Figure. Note that the operation of this circuit is such that whichever output is 1 gives the desired magnitude compar