IRS2336D International Rectifier Corp., IRS2336D Datasheet - Page 27

• Manufacturer Part Number: IRS2336D
• Description: High Voltage 3 Phase Gate Driver Ic
• Manufacturer: International Rectifier Corp.

approximately the same duration as the input signal. The lower pair of waveforms (Example 2) show an input signal
with a duration slightly longer then t
Short-Pulse / Noise Rejection
This device’s input filter provides protection against short-pulses (e.g., noise) on the input lines. If the duration of the
input signal is less than t
in the low state with positive noise spikes of durations less than t
of Figure 19 shows the input and output in the high state with negative noise spikes of durations less than t
output does not change states.
Figures 20 and 21 present lab data that illustrates the characteristics of the input filters while receiving ON and OFF
pulses.
The input filter characteristic is shown in Figure 20; the left side illustrates the narrow pulse ON (short positive pulse)
characteristic while the left shows the narrow pulse OFF (short negative pulse) characteristic. The x-axis of Figure
20 shows the duration of PW
duration less than t
also see that once the PW
this interval with the symmetry improving as the duration increases. To ensure proper operation of the HVIC, it is
suggested that the input pulse width for the high-side inputs be ≥ 500 ns.
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IN
OUT
IN
OUT
Figure 17: Typical input filter
t
t
FIL,IN
FIL,IN
FIL,IN
, that the resulting PW
FIL,IN
IN
duration exceed t
, the output will not change states. Example 1 of Figure 19 shows the input and output
IN
, while the y-axis shows the resulting PW
FIL,IN
Figure 19: Noise rejecting input filters
IN
IN
; the resulting output is approximately the same duration as the input signal.
OUT
OUT
FIL,IN
OUT
t
t
, that the PW
FIL,IN
FIL,IN
duration is zero (e.g., the filter rejects the input signal/noise). We
27
OUT
FIL,IN
durations mimic the PW
IN
OUT
IN
OUT
; the output does not change states. Example 2
Figure 18: Advanced input filter
OUT
duration. It can be seen that for a PW
t
t
FIL,IN
FIL,IN
IRS2336xD Family
IN
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durations very well over
FIL,IN
; the
IN