©2006 Fairchild Semiconductor Corporation
10
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FSAM50SM60A Rev. C4
FSAM50SM60A Moti
on
SPM®
2 Series
Time Charts of Protective Function
P1 : Normal operation: IGBT ON and conducting current .
P2 : Under-voltage detection.
P3 : IGBT gate interrupt.
P4 : Fault signal generation.
P5 : Under-voltage reset.
P6 : Normal operation: IGBT ON and conducting current.
Figure 9. Under-Voltage Protection (Low-Side)
P1 : Normal operation: IGBT ON and conducting current.
P2 : Under-voltage detection.
P3 : IGBT gate interrupt.
P4 : No fault signal.
P5 : Under-voltage reset.
P6 : Normal operation: IGBT ON and conducting current.
Figure 10. Under-Voltage Protection (High-Side)
Internal IGBT
Gate-Emitter Voltage
Input Signal
Output Current
Fault Output Signal
Control Supply Voltage
P1
P2
P3
P4
P6
P5
UV
detect
UV
reset
Internal IGBT
Gate-Emitter Voltage
Input Signal
Output Current
Fault Output Signal
Control Supply Voltage
V
BS
P1
P2
P3
P4
P6
P5
UV
detect
UV
reset
