English
Language : 

33931 Datasheet, PDF (15/21 Pages) Freescale Semiconductor, Inc – 5.0 A Throttle Control H-bridge
◁
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
LOGIC COMMANDS AND REGISTERS
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.
Device State
Forward
Reverse
Free Wheeling Low
Free Wheeling High
Disable 1 (D1)
IN1 Disconnected
IN2 Disconnected
D1 Disconnected
Under-voltage Lockout(29)
Over-temperature(30)
Short-circuit(30)
Sleep Mode EN/D2
EN/D2 Disconnected
EN/D2
H
H
H
H
H
H
H
H
H
H
H
L
Z
Input Conditions
D1
IN1
L
H
L
L
L
L
L
H
H
X
L
Z
L
X
Z
X
X
X
X
X
X
X
X
X
X
X
IN2
L
H
L
H
X
X
Z
X
X
X
X
X
X
Status
SF
H
H
H
H
L
H
H
L
L
L
L
H
H
Outputs
OUT1
OUT2
H
L
L
H
L
L
H
H
Z
Z
H
X
X
H
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Notes
29. 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.
30. 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/D2, or VPWR.
Forward
VPW R
VPW R
Load
C ur ren t
ON
OUT1
LOAD
OFF
OUT2
OFF
ON
PGND
PGND
High-Side Recirculation
(Forward)
VPWR
VPWR
ON
OUT1
Load
Current
LOAD
ON
OUT2
OFF
OFF
Reverse
VPW R
VPW R
Load
C ur re nt
OFF
OUT1
LOAD
ON
OUT2
ON
OFF
PGND
PGND
PGND
PGND
Figure 12. 33931 Power Stage Operation
Low-Side Recirculation
(Forward)
VPWR
VPWR
OFF
OUT1
ON
LOAD
Load
Current
OFF
OUT2
ON
PGND
PGND
Analog Integrated Circuit Device Data
Freescale Semiconductor
33931
15
 ▷