SI82390AD-IS Datasheet, PDF (8/38 Pages) Silicon Laboratories – 4.0 A ISODrivers with 2.5 V VDDI and Safety Features

Si8239x Data Sheet
System Overview
Table 2.3. Si82397 Dual Drivers with No UVLO Status
VIA
VIB
EN¹
VDDI
VDDA
VDDB
VOA
VOB
Notes
H
L
H
P
P
P
H
L
L
H
H
P
P
P
L
H
H
H
H
P
P
P
H
H
L
L
H
P
P
P
L
L
X
X
L/NC
P
P
P
L
L
Device disabled
X
X
X
UP²
P
P
L
L
Fail-safe output when
VDDI is unpowered
H
X
H
P
P
UP
H
UD³
VOA depends on VDDA
state
L
X
H
P
P
UP
L
UD
X
H
H
P
UP
P
UD
H
VOB depends on VDDB
state
X
L
H
P
UP
P
UD
L
Note:
1. The EN pin needs to be pulled down with a 100 kΩ resistor externally to GND.
2. The chip can be powered through the VIA,VIB input ESD diodes even if VDDI is unpowered. It is recommended that inputs be left
unpowered when VDDI is unpowered. The EN pin has a special ESD circuit that prevents the IC from powering up through the
EN pin.
3. UD = undetermined if same side power is UP.
Table 2.4. Si82394/8 PWM Input HS/LS Drivers with UVLO Status
PWM
EN¹
VDDI
VDDA
VDDB
VOA
VOB
RDY
Notes
H
H
P
P
P
H
L
H
See Dead-time note and
Figure 2.18 Dead Time
Waveforms for High-
Side/Low-Side Drivers on
page 12 for timing
L
H
P
P
P
L
H
H
X
L/NC
P
P
P
L
L
H
Device disabled
X
X
UP²
P
P
L
L
UD³
Fail-safe output when
VDDI unpowered
H
H
P
P
UP
H
UD
L
VOA depends on VDDA
state
L
H
P
P
UP
L
UD
L
H
H
P
UP
P
UD
L
L
VOB depends on VDDB
state
L
H
P
UP
P
UD
H
L
Note:
1. The EN pin needs to be pulled down with a 100 kΩ resistor externally to GND.
2. The chip can be powered through the PWM input ESD diodes even if VDDI is unpowered. It is recommended that inputs be left
unpowered when VDDI is unpowered. The EN pin has a special ESD circuit that prevents the IC from powering up through the
EN pin.
3. UD = undetermined if same side power is UP.
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