IR21141SSPBF_09 IRF [International Rectifier], IR21141SSPBF_09 Datasheet - Page 15

• Manufacturer Part Number: IR21141SSPBF_09
• Description: HALF-BRIDGE GATE DRIVER IC
• Manufacturer: IRF [International Rectifier]

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diode is required between DSH and VB and between
DSL and Vcc, as shown in Fig 13. A diode similar to the
1N5818 is good enough to protect DSH and DSL.
1.6 Output Stage
The structure is shown in Fig. 13 and consists of two
turn on stages and one turn off stage. When the driver
turns on the IGBT (see Fig. 8), a first stage is activated
R
DSH/L
Figure 16: R
100K ohm
HO(HOP/HON)
LO(LOP/LON)
FAULT/SD
FLT_CLR
DSH/L
Figure 17: I/O Timing Diagram with SY_FLT and FAULT/SD as Output
HO (HOP/HON)
SY_FLT
LO (LOP/LON)
Figure 18: I/O Logic Diagram with SY_FLT and FAULT/SD as Input
DSL
DSH
HIN
LIN
Active Biasing
FAULT/SD
FLT_CLR
SY_FLT
100 ohm
HIN
LIN
A
V
DSH/L
B
A B
15
C
C
while an additional stage is maintained in the active state
for a limited time (t
driving capability in order to accommodate both a fast
gate charge to the plateau voltage and dV/dt control in
switching.
At turn off, a single n-channel sinks up to 3 A (I
offers a low impedance path to prevent the self-turn on
due to the parasitic Miller capacitance in the power
switch.
1.7 Timing and Logic State Diagrams Description
The following figures show the input/output logic
diagram. Figure 17 shows the SY_FLT and FAULT/SD
signals as outputs, whereas Fig. 18 shows them as
inputs.
D
D
E
E
F
IR21141/IR22141SSPbF
on1
). This feature boosts the total
F
© 2009 International Rectifier
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