IRS2336D International Rectifier Corp., IRS2336D Datasheet - Page 30

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

Tolerant to Negative V
A common problem in today’s high-power switching converters is the transient response of the switch node’s voltage
as the power switches transition on and off quickly while carrying a large current. A typical 3-phase inverter circuit is
shown in Figure 25; here we define the power switches and diodes of the inverter.
If the high-side switch (e.g., the IGBT Q1 in Figures 26 and 27) switches off, while the U phase current is flowing to
an inductive load, a current commutation occurs from high-side switch (Q1) to the diode (D2) in parallel with the low-
side switch of the same inverter leg. At the same instance, the voltage node V
voltage to the negative DC bus voltage.
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S
Transients
Voltage
Input
V
CC
ITRIP
V
Figure 24: Separate V
SS
Figure 25: Three phase inverter
D
BS
Q1
Q2
V
S1
(x3)
COM
(x3)
(x3)
(x3)
HO
LO
V
V
U
B
S
DC+ BUS
D1
D2
DC- BUS
DC+ BUS
DC- BUS
C
R
R
BS
G,HO
G,LO
30
Q3
Q4
+
V
SS
GE1
V
and COM pins
S2
V
-
+
-
X
V
V
S 1
R
R
D3
D4
2
1
+
V
GE2
R
0
-
Q5
Q6
V
V
S2
S3
+
V
GE3
W
IRS2336xD Family
S1
D5
D6
-
, swings from the positive DC bus
V
S3
Load
To
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