1 Features
1• Single-chip GFCI controller to aid in the design of
UL-943 compliant systems
– Built-in self-test to detect end-of-life, blink the
LED, and/ or trip the load switch
– Detect ground fault leakage path, and trip the
load switch
– Detect neutral-ground leakage path, and trip
the load switch
• Protection against single-component failure
• Dual VDD and GND pins for redundancy
• Integrated noise filter to prevent false trips
• Simultaneously protects against HOT to GND and
neutral to GND faults
• Adjustable fault current thresholds through
external feedback resistors
• Fast response time
– 150 ms for ±5mA ground fault current
– 85 ms for ±10-mA ground fault current
– 40 ms for ±30-mA ground fault current
– 10 ms for ±50-mA ground fault current
• Onboard shunt regulator powers the system
through passives
• Supports 120-V/ 60-Hz or 220-V/ 50-Hz systems
• Operating temperature range: –40 ºC to 105 ºC

2 Applications
• GFCI Outlet Receptacles
• GFCI Circuit Breakers
• Power Cord (In-Line GFCI)
• Hair Dryer
• Dish Washer

3 Description
The AFE3010 is a precision, low-power, Ground Fault
Circuit Interrupter (GFCI) controller used for detecting
ground fault leakage paths in electrical circuits. This
device is a single IC solution that continuously
monitors an electrical circuit for multiple fault
conditions to verify that the system is operating
correctly.
In addition to a ground fault leakage detection, the
AFE3010 can detect a grounded neutral condition
which can also lead to a harmful shock from a
connected appliance. The device implements a
unique closed-loop grounded neutral detection
scheme that eliminates the need for component
resonance tuning, resulting in optimized system
development time. Periodic self-test is performed
once in every 180 cycles of the AC power line to
ensure all the components related to ground fault
control system are working properly. In case of any
component failure the device enables an LED light,
and/ or trips a solenoid to open the load switch. In
applications where an LED light indicator is not
needed, the ALARM pin can be configured as a
secondary SCR driver to drive an additional solenoid
for redundancy purpose.
The AFE3010 integrates shunt and LDO regulators to
directly power from an AC line through a diode bridge
and passive components.
The AFE3010 offers flexible configurable options to
implement robust application specific protection
schemes in different end-equipments such as
electrical receptacles, circuit breakers, and so forth.