Datasheet

FPDB30PH60 PFC SPM® 3 Series for 2-Phase Bridgeless PFC
©2005 Fairchild Semiconductor Corporation 8 www.fairchildsemi.com
FPDB30PH60 Rev. C3
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 7. Under-Voltage Protection
P1 : Normal operation: IGBT ON and conducting current.
P2 : Over current detection.
P3 : IGBT gate interrupt / fault signal generation.
P4 : IGBT is slowly turned off.
P5 : IGBT OFF signal.
P6 : IGBT ON signal: but IGBT cannot be turned on during the fault output activation.
P7 : IGBT OFF state.
P8 : Fault output reset and normal operation start.
Figure 8. Over-Current Protection
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-Em itter Voltage
Input Signal
Output Current
Sensing Voltage
Fault Output Signal
P1
P2
P3
P4
P6
P5
P7
P8
OC Reference
Voltage (0.5V)
RC Filter Delay
OC Detection