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AMIS-30621 Datasheet, PDF (22/59 Pages) AMI SEMICONDUCTOR – LIN Microstepping Motordriver | |||
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AMISâ30621
Thermal Shutdown Mode
When thermal shutdown occurs, the circuit performs a
<SoftStop> command and goes to motor shutdown mode
(see Figure 14).
Temperature Management
The AMISâ30621 monitors temperature by means of two
thresholds and one shutdown level, as illustrated in the state
diagram and illustration of Figure 14 below. The only
condition to reset flags <TW> and <TSD> (respectively
thermal warning and thermal shutdown) is to be at a
temperature lower than Ttw and to get the occurrence of a
GetStatus or a GetFullStatus LIN frame.
Normal Temp.
â<Tinfo> = â00â
â<TW> = â0â
â<TSD> = â0â
T° > Ttw
Thermal warning
â<Tinfo> = â10â
â<TW> = â1â
â<TSD> = â0â
T° > Ttsd
T° < Ttw &
LIN frame:
T° > Ttw
GetStatus or
GetFullStatus
T° < Ttw
Thermal shutdown
â<Tinfo> = â11â
â<TW> = â1â
â<TSD> = â1â
âSoftStop if
motion ongoing
âMotor shutdown
(motion disabled)
T° < Tlow
T° > Tlow
Low Temp.
â<Tinfo> = â01â
â<TW> = â0â
â<TSD> = â0â
Post thermal
warning
â<Tinfo> = â00â
â<TW> = â1â
â<TSD> = â0â
Post thermal
shutdown 2
â<Tinfo> = â00â
â<TW> = â1â
â<TSD> = â1â
âMotor shutdown
(motion disabled)
T° > Ttsd
T° < Ttsd
T° < Ttw
Post thermal
shutdown 1
â<Tinfo> = â10â
â<TW> = â1â
â<TSD> = â1â
âMotor shutdown
(motion disabled)
T° > Ttw
Figure 14. State Diagram Temperature Management
http://onsemi.com
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