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FAN4146

ON Semiconductor
Part Number FAN4146
Manufacturer ON Semiconductor
Description Ground Fault Interrupter
Published Jul 3, 2022
Detailed Description FAN4146 Ground Fault Interrupter Description The FAN4146 is a low-power controller for AC outlet Appliance Leakage Circu...
Datasheet PDF File FAN4146 PDF File

FAN4146
FAN4146

Overview
FAN4146 Ground Fault Interrupter Description The FAN4146 is a low-power controller for AC outlet Appliance Leakage Circuit Interrupters (ALCI) and two-wire Residual Current Devices (RCD).
The FAN4146 detects hazardous grounding conditions and open circuits the line before a harmful shock occurs.
Internally, the FAN4146 contains a diode rectifier, precision bandgap 12 V shunt regulator, precision low VOS offset-sense amplifier, time delay noise filter, window-detection comparators, and a SCR driver.
With the addition of a minimum number of external components, the FAN4146 detects and protects against a hot-wireto-ground fault.
The minimum number of components and the small SUPERSOTt package allow for a small-form-factor, low-cost application solution.
The FAN4146 circuitry has a built-in rectifier and shunt regulator that operates with a low quiescent current.
This allows for a high-value, low-wattage-series supply resistor.
The internal temperature compensated shunt regulator, sense amplifier, and bias circuitry provide for precision ground-fault detection.
The low VOS offset-sense amplifier allows direct coupling of the sense coil to the amplifier’s feedback signal.
This eliminates the large 50/60 Hz AC-coupling capacitor.
The internal delay filter rejects high-frequency noise spikes common with inductive loads.
This decreases false nuisance tripping.
The internal SCR driver is temperature compensated and designed to satisfy the current requirements for a wide selection of external SCRs.
The minimum number of external components and the 6-pin SUPERSOT package enable for a low-cost, compact design and layout.
The FAN4146ESX is an enhanced temperature range device.
Features • For Two-wire ALCI and RCD Applications • Precision Sense Amplifier and Bandgap Reference • Built-in AC Rectifier • Direct DC Coupled to Sense Coil • Built-in Noise Filter • Low-voltage SCR Disable • SCR Gate Driver • Adjustable Sensitivity • Minimum External Components • Meets UL 943B Requiremen...


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