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FSBB20CH60 Rev. C

Time Charts of SPMs Protective Function

a2 : Normal operation: IGBT ON and carrying current.

a4 : IGBT OFF in spite of control input condition.

a5 : Fault output operation starts.

a7 : Normal operation: IGBT ON and carrying current.

Figure 6. Under-Voltage Protection (Low-side)

b2 : Normal operation: IGBT ON and carrying current.

b4 : IGBT OFF in spite of control input condition, but there is no fault output signal.

b6 : Normal operation: IGBT ON and carrying current

Figure 7. Under-Voltage Protection (High-side)

Input Signal

Output Current

Fault Output Signal

Control

Supply Voltage

RESET

UV

CCR

Protection

Circuit State

SET

RESET

UV

CCD

a1

a3

a2

a4

a6

a5

a7

Input Signal

Output Current

Fault Output Signal

Control

Supply Voltage

RESET

UV

BSR

Protection

Circuit State

SET

RESET

UV

BSD

b1

b3

b2

b4

b6

b5

High-level (no fault output)