mc33931 Freescale Semiconductor, Inc, mc33931 Datasheet - Page 15

• Manufacturer Part Number: mc33931
• Description: 5.0 A Throttle Control H-bridge
• Manufacturer: Freescale Semiconductor, Inc

Table 5. Truth Table
The tri-state conditions and the status flag are reset using D1 or EN/D2. The truth table uses the following notations: L = LOW,
H = HIGH, X = HIGH or LOW, and Z = High-impedance. All output power transistors are switched off.
Notes
Analog Integrated Circuit Device Data
Freescale Semiconductor
Forward
Reverse
Free Wheeling Low
Free Wheeling High
Disable 1 (D1)
IN1 Disconnected
IN2 Disconnected
D1 Disconnected
Under-voltage Lockout
Over-temperature
Short-circuit
Sleep Mode EN/
EN/
29.
30.
OFF
ON
OUT1
D2
V PW R
PGND
In the event of an under-voltage condition, the outputs tri-state and status flag is SET logic LOW. Upon under-voltage
recovery, status flag is reset automatically or automatically cleared and the outputs are restored to their original operating
condition.
When a short-circuit or over-temperature condition is detected, the power outputs are tri-state latched-OFF independent of
the input signals and the status flag is latched to logic LOW. To reset from this condition requires the toggling of either D1,
EN/
Disconnected
D2
Load
Current
Forward
(30)
, or V
Device State
LOAD
D2
(30)
PWR
V PW R
PGND
(29)
.
OUT2
OFF
ON
OFF
ON
OUT1
PGND
High-Side Recirculation
V PWR
H
H
H
H
H
H
H
H
H
H
H
L
Z
EN/
LOGIC COMMANDS AND REGISTERS
Figure 12. 33931 Power Stage Operation
(Forward)
D2
Load
Current
LOAD
L
L
L
L
H
L
L
Z
X
X
X
X
X
V PWR
Input Conditions
PGND
D1
OUT2
OFF
ON
H
L
L
H
X
Z
X
X
X
X
X
X
X
IN1
OFF
ON
OUT1
V PW R
PGND
L
H
L
H
X
X
Z
X
X
X
X
X
X
IN2
Reverse
LOAD
Load
Current
H
H
H
H
L
H
H
L
L
L
L
H
H
V PW R
Status
PGND
SF
OUT2
LOGIC COMMANDS AND REGISTERS
ON
OFF
FUNCTIONAL DEVICE OPERATION
H
L
L
H
Z
H
X
Z
Z
Z
Z
Z
Z
OUT1
OFF
ON
Outputs
OUT1
PGND
V PWR
Low-Side Recirculation
L
H
L
H
Z
X
H
Z
Z
Z
Z
Z
Z
OUT2
(Forward)
Load
Current
LOAD
V PWR
PGND
OUT2
33931
OFF
ON
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