Data Sheet

Internal IGBT
Gate - Emitter Voltage
Lower Arms
Control Input
Output Current
Sensing Voltage
of Shunt Resistance
Fault Output Signal
SC Reference Voltage
CR Circuit Time
Constant Delay
SC
Protection
Circuit State
SET
RESET
c6
c7
c3
c2
c1
c8
c4
c5
FSBB15CH60C Motion SPM® 3 Series
11 www.fairchildsemi.com©2008 Fairchild Semiconductor Corporation
FSBB15CH60C Rev. 1.6
(with the external shunt resistance and CR connection)
c1 : Normal operation: IGBT ON and carrying current.
c2 : Short-circuit current detection (SC trigger).
c3 : Hard IGBT gate interrupt.
c4 : IGBT turns OFF.
c5 : Fault output timer operation starts: the pulse width of the
fault
output signal is set by the external capacitor C
FO
.
c6 : Input “LOW”: IGBT OFF state.
c7 : Input “HIGH”: IGBT ON state, but during the active period of f
ault ou
tput, the IGBT doesn’t turn ON.
c8 : IGBT OFF state.
Figure 10. Short-Circuit Protection (Low-Side Operation Only)