FNA41560B2 Fairchild Semiconductor, FNA41560B2 Datasheet - Page 12

• Manufacturer Part Number: FNA41560B2
• Description: RAIL \ 15A SPM45
• Manufacturer: Fairchild Semiconductor

FNA41560/B2 Rev. C
(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 “L” : IGBT OFF state.
c6 : Input “H”: IGBT ON state, but during the active period of fault output the IGBT doesn’t turn ON.
c7 : IGBT OFF state
Input/Output Interface Circuit
Note:
1) RC coupling at each input (parts shown dotted) might change depending on the PWM control scheme used in the application and the wiring impedance of the application’s
2) The logic input is compatible with standard CMOS outputs.
printed circuit board. The SPM input signal section integrates 5kW (typ.) pull-down resistor. Therefore, when using an external filtering resistor, please pay attention to the sig-
nal voltage drop at input terminal.
MCU
Figure 13. Short-Circuit Current Protection (Low-side Operation only)
Gate-Emitter Voltage
Fault Output Signal
Sensing Voltage
Output Current
of the shunt
control input
Circuit state
Internal IGBT
Figure 14. Recommended CPU I/O Interface Circuit
Lower arms
resistance
Protection
R
PF
=10kΩ
c1
5V-Line (MCU or Control power)
12
SC
SET
c2
c5
c3
SC Reference Voltage
c4
CR circuit time
constant delay
c6
RESET
c7
c8
COM
IN
IN
V
FO
(UH)
(UL)
,
,
IN
IN
(VH)
(VL)
SPM
,
,
IN
IN
(W H)
(WL)
www.fairchildsemi.com