IRS233(0,2)(D)(S&J)PbF
Switching and Timing Relationships
The relationship between the input and output signals of the IRS233(0,2)(D) are illustrated below in Figures 3. From these
figures, we can see the definitions of several timing parameters (i.e., PW IN , PW OUT , t ON , t OFF , t R , and t F ) associated with this
device.
LINx
(or HINx)
50%
PW IN
50%
t ON
t R
PW OUT
t OFF
t F
LOx
(or HOx)
90%
10%
90%
10%
Figure 3: Switching time waveforms
The following two figures illustrate the timing relationships of some of the functionality of the IRS233(0,2)(D); this functionality
is described in further detail later in this document.
During interval A of Figure 4, the HVIC has received the command to turn-on both the high- and low-side switches at the same
time; as a result, the shoot-through protection of the HVIC has prevented this condition and both the high- and low-side output
are held in the off state.
Interval B of Figures 4 shows that the signal on the ITRIP input pin has gone from a low to a high state; as a result, all of the
gate drive outputs have been disabled (i.e., see that HOx has returned to the low state; LOx is also held low) and a fault is
reported by the FAULT output transitioning to the low state. Once the ITRIP input has returned to the low state, the fault
condition is latched until the all LINx become high.
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