SI823X Datasheet, PDF (20/52 Pages) Silicon Laboratories – 0.5 AND 4.0 AMP ISODRIVERS (2.5 AND 5 KVRMS)

Si823x
5. Application Information
The Si823x family of isolated drivers consists of high-side, low-side, and dual driver configurations.
5.1. Products
Table 9 shows the configuration and functional overview for each product in this family.
Part Number
Si8230
Si8231
Si8232
Si8233
Si8234
Si8235/6
Table 9. Si823x Family Overview
Configuration
High-Side/Low-Side
High-Side/Low-Side
Dual Driver
High-Side/Low-Side
High-Side/Low-Side
Dual Driver
Overlap
Protection


—


—
Programmable
Dead Time


—


—
Inputs
VIA, VIB
PWM
VIA, VIB
VIA, VIB
PWM
VIA, VIB
Peak Output
Current (A)
0.5
0.5
0.5
4.0
4.0
4.0
5.2. Device Behavior
Table 10 contains truth tables for the Si8230/3, Si8231/4, and Si8232/5/6 families.
Table 10. Si823x Family Truth Table*
Si8230/3 (High-Side/Low-Side) Truth Table
Inputs
Output
VDDI State Disable
VIA VIB
VOA VOB
Notes
L
L
Powered
L
L
L
Output transition occurs after internal dead time
expires.
L
H
Powered
L
L
H
Output transition occurs after internal dead time
expires.
H
L
Powered
L
H
L
Output transition occurs after internal dead time
expires.
H
H
Powered
L
L
L
Invalid state. Output transition occurs after internal
dead time expires.
X
X Unpowered X
L
L
Output returns to input state within 7 µs of VDDI
power restoration.
X
X
Powered
H
L
L Device is disabled.
Si8231/4 (PWM Input High-Side/Low-Side) Truth Table
PWM Input
Output
VDDI State Disable
VOA VOB
Notes
H
Powered
L
H
L
Output transition occurs after internal dead time
expires.
L
Powered
L
L
H
Output transition occurs after internal dead time
expires.
X
Unpowered X
L
L
Output returns to input state within 7 µs of VDDI
power restoration.
X
Powered
H
L
L Device is disabled.
*Note: This truth table assumes VDDA and VDDB are powered. If VDDA or VDDB power is lost, the respective output state
(VOA or VOB) is undetermined.
20
Rev. 0.3