IRS26072DSPbF
Switching and Timing Relationships
The relationship between the input and output signals of the IRS26072D HVIC is shown in Figure 3. The
definitions of some of the relevant parameters associated with the gate driver input to output transmission are
given.
LIN
or HIN
50%
PW IN
50%
t ON
t R
PW OUT
t OFF
t F
LO
or HO
90%
10%
90%
10%
Figure 3: Switching time waveforms
During interval A of Figure 4 the HVIC receives the command to turn on both the high and low side switches at the
same time; correspondingly, the high and low side signals HO and LO turn on simultaneously.
Figure 4: Input/output timing diagram
Matched Propagation Delays
The IRS26072D HVIC is designed for propagation delay matching. With this feature, the input to output
propagation delays t ON , t OFF are the same for the low side and the high side channels; the maximum difference
being specified by the delay matching parameter MT as defined in Figure 6.
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12
? 2009 International Rectifier
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