FPAB20BH60B Datasheet, PDF (7/12 Pages) Fairchild Semiconductor – Smart Power Module(SPM®) for Front-End Rectifier

Time Charts of SPMs Protective Function
Inp ut S ign al
In terna l IG B T
P3
G a te -E m itter V oltag e
C on tro l S up ply V o lta ge
O u tpu t C u rren t
UV
P2
d e te c t
P1
UV
P5
re se t
P6
F a ult O u tp ut S ig na l
P4
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
Fig. 6. Under-Voltage Protection
In p u t S ig n a l
Internal IG B T
G a te -E m itte r V o lta g e
P5
P6
O C D ete c tion
P1
O u tp u t C u rre n t
P4
P7
S e n sin g V o lta g e
P2
O C R efe ren ce
V olta ge (0.5 V )
R C F ilter D ela y
P8
F a u lt O u tp u t S ig n a l
P3
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
Fig. 7. Over Current Protection
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