IRS2336D International Rectifier Corp., IRS2336D Datasheet - Page 20

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

Deadtime
This family of HVICs features integrated deadtime protection circuitry. The deadtime for these ICs is fixed; other ICs
within IR’s HVIC portfolio feature programmable deadtime for greater design flexibility. The deadtime feature inserts
a time period (a minimum deadtime) in which both the high- and low-side power switches are held off; this is done to
ensure that the power switch being turned off has fully turned off before the second power switch is turned on. This
minimum deadtime is automatically inserted whenever the external deadtime is shorter than DT; external deadtimes
larger than DT are not modified by the gate driver. Figure 7 illustrates the deadtime period and the relationship
between the output gate signals.
The deadtime circuitry of the IRS2336xD is matched with respect to the high- and low-side outputs of a given
channel; additionally, the deadtimes of each of the three channels are matched. Figure 7 defines the two deadtime
parameters (i.e., DT
IRS2336xD specifies the maximum difference between DT
comparing the DT of one channel of the IRS2336xD to that of another.
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FAULT
ITRIP
RCIN
HINx
HINx
LINx
LINx
HOx
LOx
EN
1
and DT
A
Figure 5: Input/output timing diagram for the IRS2336xD family
FAULT
ITRIP
RCIN
HOx
2
) of a specific channel; the deadtime matching parameter (MDT) associated with the
B
Figure 6: Detailed view of B & C intervals
C
V
IT,TH+
t
FLT
t
ITRIP
50%
90%
D
Interval B
20
Interval C
1
V
IT ,TH-
and DT
t
FLTCLR
V
RCIN,TH
2
. The MDT parameter also applies when
50%
IRS2336xD Family
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