Mosfet delay

One could perform the turn-on and turn-off delay calculations presented in Section 3.7.2 and still have to adjust the value of the deadtime delay-setting resistor (R6) at the breadboard stage. A starting value of 100 nS is good. The typical MOSFET turn-on delay is about 60 nS. The 100 nS will assure that there is no push-through current. 

Sakurai T (1983) Approximation of wiring delay in MOSFET LSI. IEEE J Solid-State Circuit 18 418-426... 

Answer To avoid cross-conduction, a deliberate delay needs to be introduced between one mosfet turning ON and the other turning OFF. This is called the converter s or controller s... 

For circuits, interconnection capacitances and fan out (multiple MOSFET loads) will increase response times beyond the device response time, even when parasitics are taken into account. Thus, we are led to consider interconnection delay tint. Although a lumped model suggests, as with Eq. (7.15), that tint ( Gint/ Cg ) Tg. the length of interconnections requires a distributed model. Interconnection delay is then... 

The commented-out data by DISABLE and ENABLE (Lines 32-39 in List 4.8) express the turn-off delay of the MOSFET. The technique is identical to that of the switching transistor explained in Section 4.2.2.2. 

Figure 4.21d illustrates the results obtained using the accurate model. The high-frequency oscillation as well as the switching delay is accurately reproduced. The loss of the MOSFET reduces the oscillation. 

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