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.
Table 9. Si823x Family Overview
Part Number
Configuration
Overlap
Protection
Programmable
Dead Time
Inputs
Peak Output
Current (A)
Si8230
Si8231
Si8232
Si8233
Si8234
Si8235/6
High-Side/Low-Side
High-Side/Low-Side
Dual Driver
VIA, VIB
PWM
0.5
0.5
0.5
4.0
4.0
4.0
—
—
VIA, VIB
VIA, VIB
PWM
High-Side/Low-Side
High-Side/Low-Side
Dual Driver
—
—
VIA, VIB
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
Notes
VIA
VIB
VOA
VOB
Output transition occurs after internal dead time
expires.
L
L
L
Powered
Powered
Powered
Powered
L
L
L
L
L
L
L
Output transition occurs after internal dead time
expires.
H
L
H
L
L
Output transition occurs after internal dead time
expires.
H
H
H
L
Invalid state. Output transition occurs after internal
dead time expires.
H
Output returns to input state within 7 µs of VDDI
power restoration.
X
X
X
X
Unpowered
Powered
X
H
L
L
L
L
Device is disabled.
Si8231/4 (PWM Input High-Side/Low-Side) Truth Table
Output
PWM Input
VDDI State Disable
Notes
VOA
VOB
Output transition occurs after internal dead time
expires.
H
L
Powered
Powered
L
L
H
L
Output transition occurs after internal dead time
expires.
L
H
Output returns to input state within 7 µs of VDDI
power restoration.
X
X
Unpowered
Powered
X
H
L
L
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
SILICON [ SILICON ]
