Application Note
30 of 53
V 1.0
2019-04-01
IM393 Application note
IM393 IPM Technical Description
Function and protection circuit
V
DDUV+
(or V
BSUV+
)
V
DDUV-
(or V
BSUV-
)
Normal
Operation
UVLO Protection
(Gate Drive Outputs Disab led)
Normal
Operation
Time
Figure 20
UVLO protection
V
DDUV+
V
DDUV-
Fault Output Signal
Control
Supply Voltage
HINx
LINx
HOx
LOx
Figure 21
Timing chart of low-side undervoltage protection function
V
BSUV+
V
BSUV-
Fault Output Signal
Control
Supply Voltage
HINx
LINx
HOx
LOx
High-level (no fault output)
Figure 22
Timing chart of high-side undervoltage protection function
Table 15
IM393-XX functions versus control power supply voltage
Control voltage range [V]
IM393-XX function operations
0 ~ 4
Control IC is not operating. Undervoltage lockout function is not working and
fault output signal is not provided.