AMIS-30621 Datasheet, PDF (23/59 Pages) AMI SEMICONDUCTOR – LIN Microstepping Motordriver

T shutdown level
T
T warning level
AMIS−30621
T <tw> bit
T <tsd> bit
T < T_tw and
getstatus or
getfullstatus
t
T > Ttsd, motor
stops and
shutdown
T < T_tw and
getstatus or
getfullstatus
Figure 15. Illustration of Thermal Management Situation
Battery Voltage Management
The AMIS−30621 monitors the battery voltage by means
of one threshold and one shutdown level. The only condition
to reset flags <UV2> and <StepLoss> is to recover by a
battery voltage higher than UV1 and to receive a
GetStatus or a GetFullStatus command.
− <UV2> = ‘0’
− <Steploss> = ‘0’
NORMAL
VOLTAGE
VBB > UV1
VBB > UV1
& LIN Frame
& LIN Frame
<GetFullStatus> or
<GetFullStatus> or
<GetStatus
VBB < UV2
<GetStatus>
VBB < UV2
No Motion & Motion Ongoing
− <UV2> = ‘1’
− <Steploss> = ‘0’
− Motor Shutdown
STOP
MODE
1
− <UV2> = ‘1’
− <Steploss> = ‘1’
− HardStop
− Motor Shutdown
STOP
MODE
2
Figure 16. State Diagram Battery Voltage Management
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