Data Sheet
FNC42060F / FNC42060F2 Motion SPM® 45 Series
©2013 Fairchild Semiconductor Corporation 12 www.fairchildsemi.com
FNC42060F / FNC42060F2 Rev. C3
(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 : Input “LOW”: IGBT OFF state.
c6 : Input “HIGH”: IGBT ON state, but during the active period of fault output, the IGBT doesn’t turn ON.
c7 : IGBT OFF state.
Figure 13. Short-Circuit Protection (Low-Side Operation Only)
Input/Output Interface Circuit
Figure 14. Recommended MCU I/O Interface Circuit
2nd Notes:
11. RC coupling at each input (parts shown dotted) might change depending on the PWM control scheme in the application and the wiring impedance of the application’s printed
circuit board. The input signal section of the Motion SPM
®
45 product integrates a 5 k(typ.) pull-down resistor. Therefore, when using an external filtering resistor, pay atten-
tion to the signal voltage drop at input terminal.
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
Internal IGBT
Gate - Emitter Voltage
MCU
COM
+5 V (for MCU or Control power)
,,
IN
(UL)
IN
(VL)
IN
(WL)
,,
IN
(UH)
IN
(VH)
IN
(WH)
V
FO
R
PF
= 10 kΩ
SPM