Vault 7: Projects

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© 2010 Microchip Technology Inc. Preliminary DS39735A-page 47-39
Section 47. Motor Control PWM
Motor Control
PWM
47
47.13.6 Fault Timing Examples
The following figures provide examples of PWM Fault timing.
Figure 47-19: Example Fault Timing, Cycle-by-Cycle Mode
Figure 47-20: Example Fault Timing, Latched Mode
Figure 47-21: Example Fault Timing, Cycle-by-Cycle Mode, Priority Operation
PWM
PxTMR
FLTxA
FLTxA
Fault State
PWM
Case 2:
Case 1:
FLTxA
PWM
Case 3:
Duty Cycle = 50%
Duty Cycle = 50%
Duty Cycle = 100%
Fault State
Note: Arrows indicate the time when normal PWM operation is restored.
Fault State
PWM Period
PWM
PxTMR
FLTxA
Fault State
Duty Cycle = 50%
Interrupt Flag
Cleared in Software
Return to
Normal
Operation
FLTxAIF
Fault Condition Ends
PWM
PxTMR
FLTxA
Fault State B
Duty Cycle = 50%
Return to
Normal
Operation
FLTxB
Fault State B
Return to Fault State B
Fault State A

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