NCS37010_14 Datasheet, PDF (1/12 Pages) ON Semiconductor – Self Test With Lockout Ground Fault Circuit Interrupter

NCS37010
Self Test With Lockout
Ground Fault Circuit
Interrupter (GFCI)
The NCS37010 is a fully UL943 compliant signal processor for
GFCI applications with self test and lockout. The device integrates a
flexible power supply (including both shunt and LDO regulators),
differential fault, and grounded−neutral detection circuits. Proprietary
impedance measurement and signal processing techniques are used to
minimize the number of external components and improve
performance. The device also includes a specialized DSP controller
that offers best in class immunity to nuisance loads without the need
for external analog filters. At power up the NCS37010 performs a self
test at 60ms and removes the lockout if the test passes. This self test
consists of a differential, ground−neutral and solenoid test.
Features
• 6.0 − 12 V Operation (120 − 480 V AC Mains with the Appropriate
Series Impedance)
• −40 to 85°C
• Very low power consumption: < 15 mW @ 6 V
• 16 Pin QFN or 20 Pin TSSOP Package
• Single Current Transformer (CT) Detection of Both Differential and
Grounded−Neutral Faults
• Full Self Test and Trip Indicator Monitoring.
• Self Test on Power Up Enables Lockout Functionality
• Self Syncing Internal Oscillator Adjusts to AC Mains Frequency to
Guarantee Full Resolution on 50 and 60 Hz Distribution Systems
• Optimized Solenoid Deployment (Coil is Not Energized Near the AC
Mains Zero Crossings)
• Randomized Testing Sequence to Minimize Noise and Potential
Interactions on the AC Mains
• >5 mA SCR Driver for Use with High Igt SCR’s for Improved Noise
Immunity
• Superior Immunity to Nuisance Loads/Noise (up to 10 A) Without
Loss of Detection Capability or CT Saturation
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Typical Applications
• Load Panel GFCI Breakers
• GFCI Receptacles
• In−line GFCI Circuits (Power Cords)
www.onsemi.com
MARKING
DIAGRAMS
1
QFN16
CASE 485G
NCS
37010
ALYWG
20
1
TSSOP−20
DB SUFFIX
CASE 948E
3701
0DBG
ALYWG
G
XXXXX = Specific Device Code
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
1
MLD
CTresGN
CTbias
CTstim
GND
LObar
PTT
TE
SCRtstEN
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information on page 10 of
this data sheet.
© Semiconductor Components Industries, LLC, 2014
1
October, 2014 − Rev. 1
Publication Order Number:
NCP37010/D