IRS2336D International Rectifier Corp., IRS2336D Datasheet - Page 32

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

In a typical motor drive system, dV/dt is typically designed to be in the range of 3-5 V/ns. The negative V
voltage can exceed this range during some events such as short circuit and over-current shutdown, when di/dt is
greater than in normal operation.
International Rectifier’s HVICs have been designed for the robustness required in many of today’s demanding
applications. The IRS2336xD has been seen to withstand large negative V
V for a period of 50 ns. An illustration of the IRS2336D’s performance can be seen in Figure 33. This experiment
was conducted using various loads to create this condition; the curve shown in this figure illustrates the successful
operation of the IRS2336D under these stressful conditions. In case of -V
of time greater than 100 ns; the HVIC is designed to hold the high-side outputs in the off state for 4.5 µs in order to
ensure that the high- and low-side power switches are not on at the same time.
Even though the IRS2336xD has been shown able to handle these large negative V
recommended that the circuit designer always limit the negative V
layout and component use.
PCB Layout Tips
Distance between high and low voltage components: It’s strongly recommended to place the components tied to the
floating voltage pins (V
PLCC44 package has had some unused pins removed in order to maximize the distance between the high voltage
and low voltage pins. Please see the Case Outline PLCC44 information in this datasheet for the details.
Figure 30: Parasitic Elements
www.irf.com
Q1
Q2
DC+ BUS
V
DC- BUS
S1
L
L
L
L
C1
E1
C2
E2
D1
D2
Figure 33: Negative V
B
and V
S
) near the respective high voltage portions of the device. The IRS2336xD in the
-10
-20
-30
-40
-50
-60
0
0
S
transient results for an International Rectifier HVIC
Figure 31: V
100
OFF
ON
Q1
Q2
DC+ BUS
V
DC- BUS
S1
+
V
+
-
V
-
200
LC1
LE1
Time (ns)
D2
32
S
positive
I
U
300
S
transients as much as possible by careful PCB
400
S
transients greater then -20 V for a period
S
transient conditions on the order of -50
500
IRS2336xD Family
Figure 32: V
S
transient conditions, it is highly
OFF
OFF
Q1
Q2
DC+ BUS
V
DC- BUS
S1
© 2008 International Rectifier
+
V
+
-
V
-
LE2
LC2
D1
+
S
-
V
D2
negative
I
U
S
transient