FSBB15CH60_0503 Datasheet, PDF (9/16 Pages) Fairchild Semiconductor – Smart Power Module

Time Charts of SPMs Protective Function
Input Signal
Protection
Circuit State
Control
Supply Voltage
RESET
UV_CCR
a1
SET
U V _CCD
a3
a2
a4
Output Current
RESET
a6
a7
a5
Fault Output Signal
a1 : Control supply voltage rises: After the voltage rises UV_CCR, the circuits start to operate when next input is applied.
a2 : Normal operation: IGBT ON and carrying current.
a3 : Under voltage detection (UV_CCD).
a4 : IGBT OFF in spite of control input condition.
a5 : Fault output operation starts.
a6 : Under voltage reset (UV_CCR).
a7 : Normal operation: IGBT ON and carrying current.
Fig. 6. Under-Voltage Protection (Low-side)
Input Signal
Protection
Circuit State
Control
Supply Voltage
RESET
UV_BSR
b1
UV_BSD
SET
b3
b2
b4
RESET
b5
b6
Output Current
Fault Output Signal
High-level (no fault output)
b1 : Control supply voltage rises: After the voltage reaches UV_BSR, the circuits start to operate when next input is applied.
b2 : Normal operation: IGBT ON and carrying current.
b3 : Under voltage detection (UV_BSD).
b4 : IGBT OFF in spite of control input condition, but there is no fault output signal.
b5 : Under voltage reset (UV_BSR)
b6 : Normal operation: IGBT ON and carrying current
Fig. 7. Under-Voltage Protection (High-side)
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FSBB15CH60 Rev. B
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