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FCBS0650 Rev. A

(with the external shunt resistance and CR connection)

c1 : Normal operation: MOSFET ON and carrying current.

c2 : Short circuit current detection (SC trigger).

c3 : Hard MOSFET gate interrupt.

c4 : MOSFET turns OFF.

c6 : Input “L” : MOSFET OFF state.

c7 : Input “H”: MOSFET ON state, but during the active period of fault output the MOSFET doesn’t turn ON.

c8 : MOSFET OFF state

Figure 8. Short-Circuit Current Protection (Low-side Operation only)

Low-Side Internal IGBT

Gate-Emitter Voltage

Low-Side

input Signal

Low-Side Output Current

Sensing Voltage

of the 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