ON Semiconductor

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 12V shunt regulator, precision low VOS offset-sense amplifier, time delay noise filter, window-detection comparators, and an SCR driver. With the addition of a minimum number of external components, the FAN4146 detects and protects against a hot-wire-to-ground fault. The minimum number of components and the small SuperSOT™ 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 VOSoffset-sense amplifier allows direct coupling of the sense coil to the amplifier’s feedback signal. This eliminates the large 50/60Hz 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.

The FAN4147 is a low-power Ground Fault Interrupter (GFI) controller for detecting hazardous current paths to ground and ground-to-neutral faults. The FAN4147 application circuit opens the load contacts before a harmful shock occurs.Internally, the FAN4147 contains a diode rectifier, precision bandgap 12V shunt regulator, precision low-VOSoffset-sense amplifier, time delay noise filter, window-detection comparators, and an SCR driver. With a minimum number of external components, the FAN4147 detects and protects against a hot-wire-to-ground fault and a neutral-line-to-neutral-load short. The minimal components and the small SuperSOT™ package allow for a small-form-factor, low-cost solution.The FAN4147 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-VOSoffset-sense amplifier allows direct coupling of the sense coil to the amplifier’s feedback signal. This eliminates the large 50/60Hz 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 a low-cost, compact design and layout.

The FAN41501 is a digital controller for periodic functional testing of key Ground Fault Circuit Interrupters (GFCI) components. In combination with an existing ON Semiconductor GFI controller, it periodically tests for the functional operation of the GFCI controller, solenoid, sense transformer, SCR, and other discrete components without disrupting power to the load or compromising normal GFCI protection functionality. If the FAN41501 detects a faulty GFCI component, it generates an End-of-Life (EOL) fault signal that can be used to deny power and/or automatically reset after the denial of power.When the AC power is first applied, an internal timer starts a test cycle at one second. After this initial test cycle, the internal timer starts a test cycle every 90 minutes. During a test cycle, the FAN41501 simulates a ground fault and monitors the key GFCI components. If the FAN41501 detects a component fault, it verifies the fault several times to prevent a false EOL signal. At no time during a test cycle is the normal GFCI protection disabled or compromised.The FAN41501 includes a 5 V shunt regulator, one-second timer, 90-minute timer, digital control logic, detection comparators, and an EOL driver output.The FAN41501, together with a GFCI controller such as FAN4149, provides a complete UL943 GFCI function with automatic monitoring capability, low system power, and a minimum number of external components.The 6-pin, SuperSOT™ package enables a low-cost, compact design and layout.

The FAN4174 (single) and FAN4274 (dual) are voltage feedback amplifiers with CMOS inputs that consume only 200 µA of supply current per amplifier, while providing ±33 mA of output short-circuit current. These amplifiers are designed to operate 5 V supplies. The common mode voltage range extends beyond the negative and positive rails.The FAN4174 and FAN4274 are designed on a CMOS process and provide 3.7 MHz of bandwidth and 3 V / μs of slew rate at a supply voltage of 5 V.These amplifiers operate and are reliable over a wide temperature range of -40°C to +125°C.The combination of extended temperature operation, low power, rail-to-rail performance, low-voltage operation, and a tiny package optimize this amplifier family for use in many industrial, general-purpose, and battery-powered applications.

The highly integrated FAN4800AS/CS/01S/02S parts are specially designed for power supplies that consist of boost PFC and PWM. They require very few external components to achieve versatile protections / compensation. They are available in 16-pin DIP and SOP packages.The PWM can be used in either current or voltage mode. In voltage mode, feed-forward from the PFC output bus can reduce the secondary output ripple.Compared with older productions, ML4800 and FAN4800, FAN4800AS/CS/01S/02S have lower operation current that saves power consumption in external devices. FAN4800AS/CS/01S/02S have accurate 49.9% maximum duty of PWM that makes the hold-up time longer. Brownout protection and PFC soft-start functions available in this series are not available in ML4800 and FAN4800.To evaluate FAN4800AS/CS/01S/02S for replacing existing FAN4800 and ML4800 boards, five things must be completed before the fine-tuning procedure:1. Change RACresister from the old value to a higher resister: between 6 MΩ to 8 MΩ.2. Change RT/CT pin from the existing values to RT=6.8 kΩ and CT=1000 pF to have fPFC=64 kHz and fPWM=64 kHz.3. The VRMS pin needs to be 1.224 V at VIN=85 VACfor universal input application from line input from 85 VACto 270 VAC.4. At full load, the average VVEAneeds to be ~4.5 V and the ripple of VVEAneeds to be less than 400 mV.5. For the Soft-Start pin, the soft-start current has been reduced to half the FAN4800 capacitor.There are two differences from FAN4800A/C/01/02 to FAN4800AS/CS/01S/02S:1. Under-voltage protection debounce time is extended to one second.2. PWM gate clamp voltage is raised to 19 V.

The highly integrated FAN4800AS/CS/01S/02S parts are specially designed for power supplies that consist of boost PFC and PWM. They require very few external components to achieve versatile protections / compensation. They are available in 16-pin DIP and SOP packages.The PWM can be used in either current or voltage mode. In voltage mode, feed-forward from the PFC output bus can reduce the secondary output ripple.Compared with older productions, ML4800 and FAN4800, FAN4800AS/CS/01S/02S have lower operation current that saves power consumption in external devices. FAN4800AS/CS/01S/02S have accurate 49.9% maximum duty of PWM that makes the hold-up time longer. Brownout protection and PFC soft-start functions available in this series are not available in ML4800 and FAN4800.To evaluate FAN4800AS/CS/01S/02S for replacing existing FAN4800 and ML4800 boards, five things must be completed before the fine-tuning procedure:1. Change RACresister from the old value to a higher resister: between 6 MΩ to 8 MΩ.2. Change RT/CT pin from the existing values to RT=6.8 kΩ and CT=1000 pF to have fPFC=64 kHz and fPWM=64 kHz.3. The VRMS pin needs to be 1.224 V at VIN=85 VACfor universal input application from line input from 85 VACto 270 VAC.4. At full load, the average VVEAneeds to be ~4.5 V and the ripple of VVEAneeds to be less than 400 mV.5. For the Soft-Start pin, the soft-start current has been reduced to half the FAN4800 capacitor.There are two differences from FAN4800A/C/01/02 to FAN4800AS/CS/01S/02S:1. Under-voltage protection debounce time is extended to one second.2. PWM gate clamp voltage is raised to 19 V.

The highly integrated FAN4800AS/CS/01S/02S parts are specially designed for power supplies that consist of boost PFC and PWM. They require very few external components to achieve versatile protections / compensation. They are available in 16-pin DIP and SOP packages.The PWM can be used in either current or voltage mode. In voltage mode, feed-forward from the PFC output bus can reduce the secondary output ripple.Compared with older productions, ML4800 and FAN4800, FAN4800AS/CS/01S/02S have lower operation current that saves power consumption in external devices. FAN4800AS/CS/01S/02S have accurate 49.9% maximum duty of PWM that makes the hold-up time longer. Brownout protection and PFC soft-start functions available in this series are not available in ML4800 and FAN4800.To evaluate FAN4800AS/CS/01S/02S for replacing existing FAN4800 and ML4800 boards, five things must be completed before the fine-tuning procedure:1. Change RACresister from the old value to a higher resister: between 6 MΩ to 8 MΩ.2. Change RT/CT pin from the existing values to RT=6.8 kΩ and CT=1000 pF to have fPFC=64 kHz and fPWM=64 kHz.3. The VRMS pin needs to be 1.224 V at VIN=85 VACfor universal input application from line input from 85 VACto 270 VAC.4. At full load, the average VVEAneeds to be ~4.5 V and the ripple of VVEAneeds to be less than 400 mV.5. For the Soft-Start pin, the soft-start current has been reduced to half the FAN4800 capacitor.There are two differences from FAN4800A/C/01/02 to FAN4800AS/CS/01S/02S:1. Under-voltage protection debounce time is extended to one second.2. PWM gate clamp voltage is raised to 19 V.