FAN4147SX Datasheet, PDF (6/10 Pages) Fairchild Semiconductor – Ground Fault Interrupter

Typical Performance Characteristics
Unless otherwise specified, results are T_A=25°C and according to Figure 2 with solenoid disconnected.
Line (pin 3) is clamped to 12.7V
during the positive V_AC half cycle
Ch1: Line (Pin 3) 10V/Div
Ch2: AmpOut (Pin 6) 10V/Div
Ch3: VREF (Pin 4) 10V/Div
Ch4: V_AC Input 200V/Div
Figure 4. Typical Waveforms with No Ground Fault
Detection of I_Fault signal
I_Fault = (V_Ampout – V_REF)•N/R_SET
Ch1: Line (Pin 3) 10V/Div
Ch2: AmpOut (Pin 6) 5V/Div
Ch3: SCR (Pin 1) 1V/Div
Ch4: I_Fault 10mA/Div
Figure 5. Typical Waveforms with 4mA Ground Fault
© 2010 Fairchild Semiconductor Corporation
FAN4147 • Rev. 1.0.1
6
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